sencha touch 2 - Page 171

ssh, "Last Login", `last` and OS X

- by allentown

I have hit the googles as much as I can on this, being specific to OS X, I am not finding an answer. Nothing is wrong, but curiosity levels are high. $ssh [email protected] Password: Last login: Wed Apr 7 21:28:03 2010 from my-laptop.local ^lonely tylenol^ Line 1 is my command line 2 is the shell asking for the password line 3 is where my question comes from line 4 comes out of /etc/motd I can find nothing in ~/ of an of the .bash* files that contains the string "Last Login", and would like to alter it. It performs some type of hostname lookup, which I can not determine. If I ssh to another host: $ssh [email protected] Last login: Wed Apr 7 21:14:51 2010 from 123-234-321-123-some.cal.isp.net.example hi there, you are on box 456 line 1 is my command line 2 is again, where my question comes from line 3 is from /etc/motd *The dash'd IP address is not reversed On this remote host, I have ~/.ssh and it's corresponding keys set up, so there was no password request Where is the "Last Login:" coming from, where does the date stamp come from, and most importantly, where does the hostname come from? While on [email protected] (box 456) $echo hostname remote.location.example456.com Or with dig, to make sure I have rDNS/PTR set up, for which I am not authoritative, but my ISP has correctly set... $dig -x 123.234.321.123 PTR remote.location.example456.com or $dig PTR 123.321.234.123.in-addr.arpa. +short remote.location.example456.com. my previous hostname used to be 123-234-321-123-some.cal.isp.net.example, which I set with hostname -s remote.location.example456.com, because it was obnoxious to see such a long name. That solves the value of $echo hostname which now returns remote.location.example456.com. Mac OS X, 10.6 is this case, does seem to honor: touch ~/.hushlogin If leave that file empty, I get nothing on the shell when I login. I want to know what controls the host resolution of the IP, and how it is all working. For example, running last reports a huge list of my logins, which have obtusely long hostnames, when they would be preferable to just be remote.location.example456.com. More confusing to me, reading the man page for wtmp and lastlog, it looks like lastlog is not used on OS X, /var/log/lastlog does not exist. Actually, none of these exist on 10.5 or 10.6: /var/run/utmp The utmp file. /var/log/wtmp The wtmp file. /var/log/lastlog The lastlog file. If I am to assume that the system is doing some kind of reverse lookup, I certainly do not know what it is, as it is not an accurate one.

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unable to connect site to different port

- by JohnMerlino

I have a domain was registered at godaddy named http://mysite.com/. I logged into godaddy and I went to All Products Domains Domain Management. I clicked on the appropriate domain and it took me to the Domain Details page. I clicked Launch under DNS Manager and it took me to the Zone File Editor. I noticed that notify.mysite.com was pointing to an IP address pointing to a dead server, so I switched it to an operating server. Then I pinged the domain to see where it was pointing to and it was correctly pointing to the working server. So I copied the default configuration under sites-available: sudo cp default notify.mysite.com. And then I made some edits to it to have it point to a different document root to serve files at a different port: Listen 1740 Listen 64.135.xx.xxx:1740 #I also tried this as well: NameVirtualHost 64.135.xx.xxx:1740 <VirtualHost 64.135.xx.xxx:1740> ServerAdmin [email protected] ServerName notify.mysite.com DocumentRoot /var/www/test/public <Directory /var/www/test/public> Order allow,deny allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> Then I enabled the virtual host. Then I went to the document root and added an index.html file with some text in it. Then I restarted apache. The restart gave no errors. Then I type the correct domain in URL: http://notify.mysite.com:1740/ and I get: Oops! Google Chrome could not connect to notify.mysite.com:1740 Somehow it took out all my other sites. Now even the ones that were responding on port 80 are no longe responding, even though I did not touch the virtual hosts for them. I get this message now: Oops! Google Chrome could not connect to mysite.com However, ping responds: ping mysite.com PING mysite.com (64.135.12.134): 56 data bytes 64 bytes from 64.135.12.134: icmp_seq=0 ttl=49 time=20.839 ms 64 bytes from 64.135.12.134: icmp_seq=1 ttl=49 time=20.489 ms The result of telnet: $ telnet guarddoggps.com 80 Trying 64.135.12.134... telnet: connect to address 64.135.12.134: Connection refused telnet: Unable to connect to remote host

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Fitting an Image to Screen on Rotation iPhone / iPad ?

- by user356937

I have been playing around with one of the iPhone examples from Apple' web site (ScrollViewSuite) . I am trying to tweak it a bit so that when I rotate the the iPad the image will fit into the screen in landscape mode vertical. I have been successful in getting the image to rotate, but the image is larger than the height of the landscape screen, so the bottom is below the screen. I would like to image to scale to the height of the landscape screen. I have been playing around with various autoSizingMask attributes without success. The imageView is called "zoomView" this is the actual image which loads into a scrollView called imageScrollView. I am trying to achieve the screen to rotate and look like this.... olsonvox.com/photos/correct.png However, this is what My screen is looking like. olsonvox.com/photos/incorrect.png I would really appreciate some advice or guidance. Below is the RootViewController.m for the project. Blade # import "RootViewController.h" #define ZOOM_VIEW_TAG 100 #define ZOOM_STEP 1.5 #define THUMB_HEIGHT 150 #define THUMB_V_PADDING 25 #define THUMB_H_PADDING 25 #define CREDIT_LABEL_HEIGHT 25 #define AUTOSCROLL_THRESHOLD 30 @interface RootViewController (ViewHandlingMethods) - (void)toggleThumbView; - (void)pickImageNamed:(NSString *)name; - (NSArray *)imageNames; - (void)createThumbScrollViewIfNecessary; - (void)createSlideUpViewIfNecessary; @end @interface RootViewController (AutoscrollingMethods) - (void)maybeAutoscrollForThumb:(ThumbImageView *)thumb; - (void)autoscrollTimerFired:(NSTimer *)timer; - (void)legalizeAutoscrollDistance; - (float)autoscrollDistanceForProximityToEdge:(float)proximity; @end @interface RootViewController (UtilityMethods) - (CGRect)zoomRectForScale:(float)scale withCenter:(CGPoint)center; @end @implementation RootViewController - (void)loadView { [super loadView]; imageScrollView = [[UIScrollView alloc] initWithFrame:[[self view]bounds]]; // this code makes the image resize to the width and height properly. imageScrollView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin| UIViewAutoresizingFlexibleBottomMargin| UIViewAutoresizingFlexibleBottomMargin; // TRY SETTNG CENTER HERE SOMEHOW>.... [imageScrollView setBackgroundColor:[UIColor blackColor]]; [imageScrollView setDelegate:self]; [imageScrollView setBouncesZoom:YES]; [[self view] addSubview:imageScrollView]; [self toggleThumbView]; // intitializes with the first image. [self pickImageNamed:@"lookbook1"]; } - (void)dealloc { [imageScrollView release]; [slideUpView release]; [thumbScrollView release]; [super dealloc]; } #pragma mark UIScrollViewDelegate methods - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { UIView *view = nil; if (scrollView == imageScrollView) { view = [imageScrollView viewWithTag:ZOOM_VIEW_TAG]; } return view; } /************************************** NOTE **************************************/ /* The following delegate method works around a known bug in zoomToRect:animated: */ /* In the next release after 3.0 this workaround will no longer be necessary */ /**********************************************************************************/ - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale { [scrollView setZoomScale:scale+0.01 animated:NO]; [scrollView setZoomScale:scale animated:NO]; } #pragma mark TapDetectingImageViewDelegate methods - (void)tapDetectingImageView:(TapDetectingImageView *)view gotSingleTapAtPoint:(CGPoint)tapPoint { // Single tap shows or hides drawer of thumbnails. [self toggleThumbView]; } - (void)tapDetectingImageView:(TapDetectingImageView *)view gotDoubleTapAtPoint:(CGPoint)tapPoint { // double tap zooms in float newScale = [imageScrollView zoomScale] * ZOOM_STEP; CGRect zoomRect = [self zoomRectForScale:newScale withCenter:tapPoint]; [imageScrollView zoomToRect:zoomRect animated:YES]; } - (void)tapDetectingImageView:(TapDetectingImageView *)view gotTwoFingerTapAtPoint:(CGPoint)tapPoint { // two-finger tap zooms out float newScale = [imageScrollView zoomScale] / ZOOM_STEP; CGRect zoomRect = [self zoomRectForScale:newScale withCenter:tapPoint]; [imageScrollView zoomToRect:zoomRect animated:YES]; } #pragma mark ThumbImageViewDelegate methods - (void)thumbImageViewWasTapped:(ThumbImageView *)tiv { [self pickImageNamed:[tiv imageName]]; [self toggleThumbView]; } - (void)thumbImageViewStartedTracking:(ThumbImageView *)tiv { [thumbScrollView bringSubviewToFront:tiv]; } // CONTROLS DRAGGING AND DROPPING THUMBNAILS... - (void)thumbImageViewMoved:(ThumbImageView *)draggingThumb { // check if we've moved close enough to an edge to autoscroll, or far enough away to stop autoscrolling [self maybeAutoscrollForThumb:draggingThumb]; /* The rest of this method handles the reordering of thumbnails in the thumbScrollView. See */ /* ThumbImageView.h and ThumbImageView.m for more information about how this works. */ // we'll reorder only if the thumb is overlapping the scroll view if (CGRectIntersectsRect([draggingThumb frame], [thumbScrollView bounds])) { BOOL draggingRight = [draggingThumb frame].origin.x > [draggingThumb home].origin.x ? YES : NO; /* we're going to shift over all the thumbs who live between the home of the moving thumb */ /* and the current touch location. A thumb counts as living in this area if the midpoint */ /* of its home is contained in the area. */ NSMutableArray *thumbsToShift = [[NSMutableArray alloc] init]; // get the touch location in the coordinate system of the scroll view CGPoint touchLocation = [draggingThumb convertPoint:[draggingThumb touchLocation] toView:thumbScrollView]; // calculate minimum and maximum boundaries of the affected area float minX = draggingRight ? CGRectGetMaxX([draggingThumb home]) : touchLocation.x; float maxX = draggingRight ? touchLocation.x : CGRectGetMinX([draggingThumb home]); // iterate through thumbnails and see which ones need to move over for (ThumbImageView *thumb in [thumbScrollView subviews]) { // skip the thumb being dragged if (thumb == draggingThumb) continue; // skip non-thumb subviews of the scroll view (such as the scroll indicators) if (! [thumb isMemberOfClass:[ThumbImageView class]]) continue; float thumbMidpoint = CGRectGetMidX([thumb home]); if (thumbMidpoint >= minX && thumbMidpoint <= maxX) { [thumbsToShift addObject:thumb]; } } // shift over the other thumbs to make room for the dragging thumb. (if we're dragging right, they shift to the left) float otherThumbShift = ([draggingThumb home].size.width + THUMB_H_PADDING) * (draggingRight ? -1 : 1); // as we shift over the other thumbs, we'll calculate how much the dragging thumb's home is going to move float draggingThumbShift = 0.0; // send each of the shifting thumbs to its new home for (ThumbImageView *otherThumb in thumbsToShift) { CGRect home = [otherThumb home]; home.origin.x += otherThumbShift; [otherThumb setHome:home]; [otherThumb goHome]; draggingThumbShift += ([otherThumb frame].size.width + THUMB_H_PADDING) * (draggingRight ? 1 : -1); } // change the home of the dragging thumb, but don't send it there because it's still being dragged CGRect home = [draggingThumb home]; home.origin.x += draggingThumbShift; [draggingThumb setHome:home]; } } - (void)thumbImageViewStoppedTracking:(ThumbImageView *)tiv { // if the user lets go of the thumb image view, stop autoscrolling [autoscrollTimer invalidate]; autoscrollTimer = nil; } #pragma mark Autoscrolling methods - (void)maybeAutoscrollForThumb:(ThumbImageView *)thumb { autoscrollDistance = 0; // only autoscroll if the thumb is overlapping the thumbScrollView if (CGRectIntersectsRect([thumb frame], [thumbScrollView bounds])) { CGPoint touchLocation = [thumb convertPoint:[thumb touchLocation] toView:thumbScrollView]; float distanceFromLeftEdge = touchLocation.x - CGRectGetMinX([thumbScrollView bounds]); float distanceFromRightEdge = CGRectGetMaxX([thumbScrollView bounds]) - touchLocation.x; if (distanceFromLeftEdge < AUTOSCROLL_THRESHOLD) { autoscrollDistance = [self autoscrollDistanceForProximityToEdge:distanceFromLeftEdge] * -1; // if scrolling left, distance is negative } else if (distanceFromRightEdge < AUTOSCROLL_THRESHOLD) { autoscrollDistance = [self autoscrollDistanceForProximityToEdge:distanceFromRightEdge]; } } // if no autoscrolling, stop and clear timer if (autoscrollDistance == 0) { [autoscrollTimer invalidate]; autoscrollTimer = nil; } // otherwise create and start timer (if we don't already have a timer going) else if (autoscrollTimer == nil) { autoscrollTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / 60.0) target:self selector:@selector(autoscrollTimerFired:) userInfo:thumb repeats:YES]; } } - (float)autoscrollDistanceForProximityToEdge:(float)proximity { // the scroll distance grows as the proximity to the edge decreases, so that moving the thumb // further over results in faster scrolling. return ceilf((AUTOSCROLL_THRESHOLD - proximity) / 5.0); } - (void)legalizeAutoscrollDistance { // makes sure the autoscroll distance won't result in scrolling past the content of the scroll view float minimumLegalDistance = [thumbScrollView contentOffset].x * -1; float maximumLegalDistance = [thumbScrollView contentSize].width - ([thumbScrollView frame].size.width + [thumbScrollView contentOffset].x); autoscrollDistance = MAX(autoscrollDistance, minimumLegalDistance); autoscrollDistance = MIN(autoscrollDistance, maximumLegalDistance); } - (void)autoscrollTimerFired:(NSTimer*)timer { [self legalizeAutoscrollDistance]; // autoscroll by changing content offset CGPoint contentOffset = [thumbScrollView contentOffset]; contentOffset.x += autoscrollDistance; [thumbScrollView setContentOffset:contentOffset]; // adjust thumb position so it appears to stay still ThumbImageView *thumb = (ThumbImageView *)[timer userInfo]; [thumb moveByOffset:CGPointMake(autoscrollDistance, 0)]; } #pragma mark View handling methods - (void)toggleThumbView { [self createSlideUpViewIfNecessary]; // no-op if slideUpView has already been created CGRect frame = [slideUpView frame]; if (thumbViewShowing) { frame.origin.y = 0; } else { frame.origin.y = -225; } [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.3]; [slideUpView setFrame:frame]; [UIView commitAnimations]; thumbViewShowing = !thumbViewShowing; } - (void)pickImageNamed:(NSString *)name { // first remove previous image view, if any [[imageScrollView viewWithTag:ZOOM_VIEW_TAG] removeFromSuperview]; UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"%@.jpg", name]]; TapDetectingImageView *zoomView = [[TapDetectingImageView alloc] initWithImage:image]; zoomView.autoresizingMask = UIViewAutoresizingFlexibleWidth ; [zoomView setDelegate:self]; [zoomView setTag:ZOOM_VIEW_TAG]; [imageScrollView addSubview:zoomView]; [imageScrollView setContentSize:[zoomView frame].size]; [zoomView release]; // choose minimum scale so image width fits screen float minScale = [imageScrollView frame].size.width / [zoomView frame].size.width; [imageScrollView setMinimumZoomScale:minScale]; [imageScrollView setZoomScale:minScale]; [imageScrollView setContentOffset:CGPointZero]; } - (NSArray *)imageNames { // the filenames are stored in a plist in the app bundle, so create array by reading this plist NSString *path = [[NSBundle mainBundle] pathForResource:@"Images" ofType:@"plist"]; NSData *plistData = [NSData dataWithContentsOfFile:path]; NSString *error; NSPropertyListFormat format; NSArray *imageNames = [NSPropertyListSerialization propertyListFromData:plistData mutabilityOption:NSPropertyListImmutable format:&format errorDescription:&error]; if (!imageNames) { NSLog(@"Failed to read image names. Error: %@", error); [error release]; } return imageNames; } - (void)createSlideUpViewIfNecessary { if (!slideUpView) { [self createThumbScrollViewIfNecessary]; CGRect bounds = [[self view] bounds]; float thumbHeight = [thumbScrollView frame].size.height; float labelHeight = CREDIT_LABEL_HEIGHT; // create label giving credit for images UILabel *creditLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, thumbHeight, bounds.size.width, labelHeight)]; [creditLabel setBackgroundColor:[UIColor clearColor]]; [creditLabel setTextColor:[UIColor whiteColor]]; // [creditLabel setFont:[UIFont fontWithName:@"Helvetica" size:16]]; // [creditLabel setText:@"SAMPLE TEXT"]; [creditLabel setTextAlignment:UITextAlignmentCenter]; // create container view that will hold scroll view and label CGRect frame = CGRectMake(0.0, -225.00, bounds.size.width+256, thumbHeight + labelHeight); slideUpView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin; slideUpView = [[UIView alloc] initWithFrame:frame]; [slideUpView setBackgroundColor:[UIColor blackColor]]; [slideUpView setOpaque:NO]; [slideUpView setAlpha:.75]; [[self view] addSubview:slideUpView]; // add subviews to container view [slideUpView addSubview:thumbScrollView]; [slideUpView addSubview:creditLabel]; [creditLabel release]; } } - (void)createThumbScrollViewIfNecessary { if (!thumbScrollView) { float scrollViewHeight = THUMB_HEIGHT + THUMB_V_PADDING; float scrollViewWidth = [[self view] bounds].size.width; thumbScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, scrollViewWidth, scrollViewHeight)]; [thumbScrollView setCanCancelContentTouches:NO]; [thumbScrollView setClipsToBounds:NO]; // now place all the thumb views as subviews of the scroll view // and in the course of doing so calculate the content width float xPosition = THUMB_H_PADDING; for (NSString *name in [self imageNames]) { UIImage *thumbImage = [UIImage imageNamed:[NSString stringWithFormat:@"%@_thumb.jpg", name]]; if (thumbImage) { ThumbImageView *thumbView = [[ThumbImageView alloc] initWithImage:thumbImage]; [thumbView setDelegate:self]; [thumbView setImageName:name]; CGRect frame = [thumbView frame]; frame.origin.y = THUMB_V_PADDING; frame.origin.x = xPosition; [thumbView setFrame:frame]; [thumbView setHome:frame]; [thumbScrollView addSubview:thumbView]; [thumbView release]; xPosition += (frame.size.width + THUMB_H_PADDING); } } [thumbScrollView setContentSize:CGSizeMake(xPosition, scrollViewHeight)]; } } #pragma mark Utility methods - (CGRect)zoomRectForScale:(float)scale withCenter:(CGPoint)center { CGRect zoomRect; // the zoom rect is in the content view's coordinates. // At a zoom scale of 1.0, it would be the size of the imageScrollView's bounds. // As the zoom scale decreases, so more content is visible, the size of the rect grows. zoomRect.size.height = [imageScrollView frame].size.height / scale; zoomRect.size.width = [imageScrollView frame].size.width / scale; // choose an origin so as to get the right center. zoomRect.origin.x = center.x - (zoomRect.size.width / 2.0); zoomRect.origin.y = center.y - (zoomRect.size.height / 2.0); return zoomRect; } #pragma mark - #pragma mark Rotation support // Ensure that the view controller supports rotation and that the split view can therefore show in both portrait and landscape. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } @end

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ASP.NET Podcast Show #148 - ASP.NET WebForms to build a Mobile Web Application

- by Wallym

Check the podcast site for the original url. This is the video and source code for an ASP.NET WebForms app that I wrote that is optimized for the iPhone and mobile environments. Subscribe to everything. Subscribe to WMV. Subscribe to M4V for iPhone/iPad. Subscribe to MP3. Download WMV. Download M4V for iPhone/iPad. Download MP3. Link to iWebKit. Source Code: <%@ Page Title="MapSplore" Language="C#" MasterPageFile="iPhoneMaster.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="AT_iPhone_Default" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"></asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="Content" Runat="Server" ClientIDMode="Static"> <asp:ScriptManager ID="sm" runat="server" EnablePartialRendering="true" EnableHistory="false" EnableCdn="true" /> <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> <script language="javascript" type="text/javascript">  </script> <asp:HiddenField ID="Latitude" runat="server" /> <asp:HiddenField ID="Longitude" runat="server" /> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js%22%3E%3C/script> <script language="javascript" type="text/javascript"> $(document).ready(function () { GetLocation(); setupMapDiv(); setupPlaceIveBeen(); }); function GetLocation() { if (navigator.geolocation != null) { navigator.geolocation.getCurrentPosition(getData); } else { var mess = document.getElementById('<%=Message.ClientID %>'); mess.innerHTML = "Sorry, your browser does not support geolocation. " + "Try the latest version of Safari on the iPhone, Android browser, or the latest version of FireFox."; } } function UpdateLocation_Click() { GetLocation(); } function getData(position) { var latitude = position.coords.latitude; var longitude = position.coords.longitude; var hdLat = document.getElementById('<%=Latitude.ClientID %>'); var hdLon = document.getElementById('<%=Longitude.ClientID %>'); hdLat.value = latitude; hdLon.value = longitude; } </script> <asp:Label ID="Message" runat="server" /> <asp:UpdatePanel ID="upl" runat="server"> <ContentTemplate> <asp:Panel ID="pnlStart" runat="server" Visible="true"> <div id="topbar"> <div id="title">MapSplore</div> </div> <div id="content"> <ul class="pageitem"> <li class="menu"> <asp:LinkButton ID="lbLocalDeals" runat="server" onclick="lbLocalDeals_Click"> <asp:Image ID="imLocalDeals" runat="server" ImageUrl="~/Images/ArtFavor_Money_Bag_Icon.png" Height="30" /> <span class="name">Local Deals.</span> <span class="arrow"></span> </asp:LinkButton> </li> <li class="menu"> <asp:LinkButton ID="lbLocalPlaces" runat="server" onclick="lbLocalPlaces_Click"> <asp:Image ID="imLocalPlaces" runat="server" ImageUrl="~/Images/Andy_Houses_on_the_horizon_-_Starburst_remix.png" Height="30" /> <span class="name">Local Places.</span> <span class="arrow"></span> </asp:LinkButton> </li> <li class="menu"> <asp:LinkButton ID="lbWhereIveBeen" runat="server" onclick="lbWhereIveBeen_Click"> <asp:Image ID="imImHere" runat="server" ImageUrl="~/Images/ryanlerch_flagpole.png" Height="30" /> <span class="name">I've been here.</span> <span class="arrow"></span> </asp:LinkButton> </li> <li class="menu"> <asp:LinkButton ID="lbMyStats" runat="server"> <asp:Image ID="imMyStats" runat="server" ImageUrl="~/Images/Anonymous_Spreadsheet.png" Height="30" /> <span class="name">My Stats.</span> <span class="arrow"></span> </asp:LinkButton> </li> <li class="menu"> <asp:LinkButton ID="lbAddAPlace" runat="server" onclick="lbAddAPlace_Click"> <asp:Image ID="imAddAPlace" runat="server" ImageUrl="~/Images/jean_victor_balin_add.png" Height="30" /> <span class="name">Add a Place.</span> <span class="arrow"></span> </asp:LinkButton> </li> <li class="button"> <input type="button" value="Update Your Current Location" onclick="UpdateLocation_Click()"> </li> </ul> </div> </asp:Panel> <div> <asp:Panel ID="pnlCoupons" runat="server" Visible="false"> <div id="topbar"> <div id="title">MapSplore</div> <div id="leftbutton"> <asp:LinkButton runat="server" Text="Return" ID="ReturnFromDeals" OnClick="ReturnFromDeals_Click" /></div></div> <div class="content"> <asp:ListView ID="lvCoupons" runat="server"> <LayoutTemplate> <ul class="pageitem" runat="server"> <asp:PlaceHolder ID="itemPlaceholder" runat="server" /> </ul> </LayoutTemplate> <ItemTemplate> <li class="menu"> <asp:LinkButton ID="lbBusiness" runat="server" Text='<%#Eval("Place.Name") %>' OnClick="lbBusiness_Click"> <span class="comment"> <asp:Label ID="lblAddress" runat="server" Text='<%#Eval("Place.Address1") %>' /> <asp:Label ID="lblDis" runat="server" Text='<%# Convert.ToString(Convert.ToInt32(Eval("Place.Distance"))) + " meters" %>' CssClass="smallText" /> <asp:HiddenField ID="hdPlaceId" runat="server" Value='<%#Eval("PlaceId") %>' /> <asp:HiddenField ID="hdGeoPromotionId" runat="server" Value='<%#Eval("GeoPromotionId") %>' /> </span> <span class="arrow"></span> </asp:LinkButton></li></ItemTemplate></asp:ListView><asp:GridView ID="gvCoupons" runat="server" AutoGenerateColumns="false"> <HeaderStyle BackColor="Silver" /> <AlternatingRowStyle BackColor="Wheat" /> <Columns> <asp:TemplateField AccessibleHeaderText="Business" HeaderText="Business"> <ItemTemplate> <asp:Image ID="imPlaceType" runat="server" Text='<%#Eval("Type") %>' ImageUrl='<%#Eval("Image") %>' /> <asp:LinkButton ID="lbBusiness" runat="server" Text='<%#Eval("Name") %>' OnClick="lbBusiness_Click" /> <asp:LinkButton ID="lblAddress" runat="server" Text='<%#Eval("Address1") %>' CssClass="smallText" /> <asp:Label ID="lblDis" runat="server" Text='<%# Convert.ToString(Convert.ToInt32(Eval("Distance"))) + " meters" %>' CssClass="smallText" /> <asp:HiddenField ID="hdPlaceId" runat="server" Value='<%#Eval("PlaceId") %>' /> <asp:HiddenField ID="hdGeoPromotionId" runat="server" Value='<%#Eval("GeoPromotionId") %>' /> <asp:Label ID="lblInfo" runat="server" Visible="false" /> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> </div> </asp:Panel> <asp:Panel ID="pnlPlaces" runat="server" Visible="false"> <div id="topbar"> <div id="title"> MapSplore</div><div id="leftbutton"> <asp:LinkButton runat="server" Text="Return" ID="ReturnFromPlaces" OnClick="ReturnFromPlaces_Click" /></div></div> <div id="content"> <asp:ListView ID="lvPlaces" runat="server"> <LayoutTemplate> <ul id="ulPlaces" class="pageitem" runat="server"> <asp:PlaceHolder ID="itemPlaceholder" runat="server" /> <li class="menu"> <asp:LinkButton ID="lbNotListed" runat="server" CssClass="name" OnClick="lbNotListed_Click"> Place not listed <span class="arrow"></span> </asp:LinkButton> </li> </ul> </LayoutTemplate> <ItemTemplate> <li class="menu"> <asp:LinkButton ID="lbImHere" runat="server" CssClass="name" OnClick="lbImHere_Click"> <%#DisplayName(Eval("Name")) %>  <%# Convert.ToString(Convert.ToInt32(Eval("Distance"))) + " meters" %> <asp:HiddenField ID="hdPlaceId" runat="server" Value='<%#Eval("PlaceId") %>' /> <span class="arrow"></span> </asp:LinkButton></li></ItemTemplate></asp:ListView> </div> </asp:Panel> <asp:Panel ID="pnlImHereNow" runat="server" Visible="false"> <div id="topbar"> <div id="title"> MapSplore</div><div id="leftbutton"> <asp:LinkButton runat="server" Text="Places" ID="lbImHereNowReturn" OnClick="lbImHereNowReturn_Click" /></div></div> <div id="rightbutton"> <asp:LinkButton runat="server" Text="Beginning" ID="lbBackToBeginning" OnClick="lbBackToBeginning_Click" /> </div> <div id="content"> <ul class="pageitem"> <asp:HiddenField ID="hdPlaceId" runat="server" /> <asp:HiddenField ID="hdPlaceLat" runat="server" /> <asp:HiddenField ID="hdPlaceLon" runat="server" /> <asp:HiddenField ID="hdPlaceTitle" runat="server" /> <asp:Button ID="btnImHereNow" runat="server" Text="I'm here" OnClick="btnImHereNow_Click" /> <asp:Label ID="lblPlaceTitle" runat="server" /><br /> <asp:TextBox ID="txtWhatsHappening" runat="server" TextMode="MultiLine" Rows="2" style="width:300px" /><br /> <div id="divImHere" style="width:300px; height:300px"></div> </div> </ul> </asp:Panel> <asp:Panel runat="server" ID="pnlIveBeenHere" Visible="false"> <div id="topbar"> <div id="title"> Where I've been</div><div id="leftbutton"> <asp:LinkButton ID="lbIveBeenHereBack" runat="server" Text="Back" OnClick="lbIveBeenHereBack_Click" /></div></div> <div id="content"> <asp:ListView ID="lvWhereIveBeen" runat="server"> <LayoutTemplate> <ul id="ulWhereIveBeen" class="pageitem" runat="server"> <asp:PlaceHolder ID="itemPlaceholder" runat="server" /> </ul> </LayoutTemplate> <ItemTemplate> <li class="menu" runat="server"> <asp:LinkButton ID="lbPlaceIveBeen" runat="server" OnClick="lbPlaceIveBeen_Click" CssClass="name"> <asp:Label ID="lblPlace" runat="server" Text='<%#Eval("PlaceName") %>' /> at <asp:Label ID="lblTime" runat="server" Text='<%#Eval("ATTime") %>' CssClass="content" /> <asp:HiddenField ID="hdATID" runat="server" Value='<%#Eval("ATID") %>' /> <span class="arrow"></span> </asp:LinkButton> </li> </ItemTemplate> </asp:ListView> </div> </asp:Panel> <asp:Panel runat="server" ID="pnlPlaceIveBeen" Visible="false"> <div id="topbar"> <div id="title"> I've been here </div> <div id="leftbutton"> <asp:LinkButton ID="lbPlaceIveBeenBack" runat="server" Text="Back" OnClick="lbPlaceIveBeenBack_Click" /> </div> <div id="rightbutton"> <asp:LinkButton ID="lbPlaceIveBeenBeginning" runat="server" Text="Beginning" OnClick="lbPlaceIveBeenBeginning_Click" /> </div> </div> <div id="content"> <ul class="pageitem"> <li> <asp:HiddenField ID="hdPlaceIveBeenPlaceId" runat="server" /> <asp:HiddenField ID="hdPlaceIveBeenLatitude" runat="server" /> <asp:HiddenField ID="hdPlaceIveBeenLongitude" runat="server" /> <asp:Label ID="lblPlaceIveBeenName" runat="server" /><br /> <asp:Label ID="lblPlaceIveBeenAddress" runat="server" /><br /> <asp:Label ID="lblPlaceIveBeenCity" runat="server" />, <asp:Label ID="lblPlaceIveBeenState" runat="server" /> <asp:Label ID="lblPlaceIveBeenZipCode" runat="server" /><br /> <asp:Label ID="lblPlaceIveBeenCountry" runat="server" /><br /> <div id="divPlaceIveBeen" style="width:300px; height:300px"></div> </li> </ul> </div> </asp:Panel> <asp:Panel ID="pnlAddPlace" runat="server" Visible="false"> <div id="topbar"><div id="title">MapSplore</div><div id="leftbutton"><asp:LinkButton ID="lbAddPlaceReturn" runat="server" Text="Back" OnClick="lbAddPlaceReturn_Click" /></div><div id="rightnav"></div></div><div id="content"> <ul class="pageitem"> <li id="liPlaceAddMessage" runat="server" visible="false"> <asp:Label ID="PlaceAddMessage" runat="server" /> </li> <li class="bigfield"> <asp:TextBox ID="txtPlaceName" runat="server" placeholder="Name of Establishment" /> </li> <li class="bigfield"> <asp:TextBox ID="txtAddress1" runat="server" placeholder="Address 1" /> </li> <li class="bigfield"> <asp:TextBox ID="txtCity" runat="server" placeholder="City" /> </li> <li class="select"> <asp:DropDownList ID="ddlProvince" runat="server" placeholder="Select State" /> <span class="arrow"></span> </li> <li class="bigfield"> <asp:TextBox ID="txtZipCode" runat="server" placeholder="Zip Code" /> </li> <li class="select"> <asp:DropDownList ID="ddlCountry" runat="server" onselectedindexchanged="ddlCountry_SelectedIndexChanged" /> <span class="arrow"></span> </li> <li class="bigfield"> <asp:TextBox ID="txtPhoneNumber" runat="server" placeholder="Phone Number" /> </li> <li class="checkbox"> <span class="name">You Here Now:</span> <asp:CheckBox ID="cbYouHereNow" runat="server" Checked="true" /> </li> <li class="button"> <asp:Button ID="btnAdd" runat="server" Text="Add Place" onclick="btnAdd_Click" /> </li> </ul></div> </asp:Panel> <asp:Panel ID="pnlImHere" runat="server" Visible="false"> <asp:TextBox ID="txtImHere" runat="server" TextMode="MultiLine" Rows="3" Columns="40" /><br /> <asp:DropDownList ID="ddlPlace" runat="server" /><br /> <asp:Button ID="btnHere" runat="server" Text="Tell Everyone I'm Here" onclick="btnHere_Click" /><br /> </asp:Panel> </div> </ContentTemplate> </asp:UpdatePanel> </asp:Content> Code Behind .cs file: using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using LocationDataModel; public partial class AT_iPhone_Default : ViewStatePage{ private iPhoneDevice ipd; protected void Page_Load(object sender, EventArgs e) { LocationDataEntities lde = new LocationDataEntities(); if (!Page.IsPostBack) { var Countries = from c in lde.Countries select c; foreach (Country co in Countries) { ddlCountry.Items.Add(new ListItem(co.Name, co.CountryId.ToString())); } ddlCountry_SelectedIndexChanged(ddlCountry, null); if (AppleIPhone.IsIPad()) ipd = iPhoneDevice.iPad; if (AppleIPhone.IsIPhone()) ipd = iPhoneDevice.iPhone; if (AppleIPhone.IsIPodTouch()) ipd = iPhoneDevice.iPodTouch; } } protected void btnPlaces_Click(object sender, EventArgs e) { } protected void btnAdd_Click(object sender, EventArgs e) { bool blImHere = cbYouHereNow.Checked; string Place = txtPlaceName.Text, Address1 = txtAddress1.Text, City = txtCity.Text, ZipCode = txtZipCode.Text, PhoneNumber = txtPhoneNumber.Text, ProvinceId = ddlProvince.SelectedItem.Value, CountryId = ddlCountry.SelectedItem.Value; int iProvinceId, iCountryId; double dLatitude, dLongitude; DataAccess da = new DataAccess(); if ((!String.IsNullOrEmpty(ProvinceId)) && (!String.IsNullOrEmpty(CountryId))) { iProvinceId = Convert.ToInt32(ProvinceId); iCountryId = Convert.ToInt32(CountryId); if (blImHere) { dLatitude = Convert.ToDouble(Latitude.Value); dLongitude = Convert.ToDouble(Longitude.Value); da.StorePlace(Place, Address1, String.Empty, City, iProvinceId, ZipCode, iCountryId, PhoneNumber, dLatitude, dLongitude); } else { da.StorePlace(Place, Address1, String.Empty, City, iProvinceId, ZipCode, iCountryId, PhoneNumber); } liPlaceAddMessage.Visible = true; PlaceAddMessage.Text = "Awesome, your place has been added. Add Another!"; txtPlaceName.Text = String.Empty; txtAddress1.Text = String.Empty; txtCity.Text = String.Empty; ddlProvince.SelectedIndex = -1; txtZipCode.Text = String.Empty; txtPhoneNumber.Text = String.Empty; } else { liPlaceAddMessage.Visible = true; PlaceAddMessage.Text = "Please select a State and a Country."; } } protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e) { string CountryId = ddlCountry.SelectedItem.Value; if (!String.IsNullOrEmpty(CountryId)) { int iCountryId = Convert.ToInt32(CountryId); LocationDataModel.LocationDataEntities lde = new LocationDataModel.LocationDataEntities(); var prov = from p in lde.Provinces where p.CountryId == iCountryId orderby p.ProvinceName select p; ddlProvince.Items.Add(String.Empty); foreach (Province pr in prov) { ddlProvince.Items.Add(new ListItem(pr.ProvinceName, pr.ProvinceId.ToString())); } } else { ddlProvince.Items.Clear(); } } protected void btnImHere_Click(object sender, EventArgs e) { int i = 0; DataAccess da = new DataAccess(); double Lat = Convert.ToDouble(Latitude.Value), Lon = Convert.ToDouble(Longitude.Value); List<Place> lp = da.NearByLocations(Lat, Lon); foreach (Place p in lp) { ListItem li = new ListItem(p.Name, p.PlaceId.ToString()); if (i == 0) { li.Selected = true; } ddlPlace.Items.Add(li); i++; } pnlAddPlace.Visible = false; pnlImHere.Visible = true; } protected void lbImHere_Click(object sender, EventArgs e) { string UserName = Membership.GetUser().UserName; ListViewItem lvi = (ListViewItem)(((LinkButton)sender).Parent); HiddenField hd = (HiddenField)lvi.FindControl("hdPlaceId"); long PlaceId = Convert.ToInt64(hd.Value); double dLatitude = Convert.ToDouble(Latitude.Value); double dLongitude = Convert.ToDouble(Longitude.Value); DataAccess da = new DataAccess(); Place pl = da.GetPlace(PlaceId); pnlImHereNow.Visible = true; pnlPlaces.Visible = false; hdPlaceId.Value = PlaceId.ToString(); hdPlaceLat.Value = pl.Latitude.ToString(); hdPlaceLon.Value = pl.Longitude.ToString(); hdPlaceTitle.Value = pl.Name; lblPlaceTitle.Text = pl.Name; } protected void btnHere_Click(object sender, EventArgs e) { string UserName = Membership.GetUser().UserName; string WhatsH = txtImHere.Text; long PlaceId = Convert.ToInt64(ddlPlace.SelectedValue); double dLatitude = Convert.ToDouble(Latitude.Value); double dLongitude = Convert.ToDouble(Longitude.Value); DataAccess da = new DataAccess(); da.StoreUserAT(UserName, PlaceId, WhatsH, dLatitude, dLongitude); } protected void btnLocalCoupons_Click(object sender, EventArgs e) { double dLatitude = Convert.ToDouble(Latitude.Value); double dLongitude = Convert.ToDouble(Longitude.Value); DataAccess da = new DataAccess(); } protected void lbBusiness_Click(object sender, EventArgs e) { string UserName = Membership.GetUser().UserName; GridViewRow gvr = (GridViewRow)(((LinkButton)sender).Parent.Parent); HiddenField hd = (HiddenField)gvr.FindControl("hdPlaceId"); string sPlaceId = hd.Value; Int64 PlaceId; if (!String.IsNullOrEmpty(sPlaceId)) { PlaceId = Convert.ToInt64(sPlaceId); } } protected void lbLocalDeals_Click(object sender, EventArgs e) { double dLatitude = Convert.ToDouble(Latitude.Value); double dLongitude = Convert.ToDouble(Longitude.Value); DataAccess da = new DataAccess(); pnlCoupons.Visible = true; pnlStart.Visible = false; List<GeoPromotion> lgp = da.NearByDeals(dLatitude, dLongitude); lvCoupons.DataSource = lgp; lvCoupons.DataBind(); } protected void lbLocalPlaces_Click(object sender, EventArgs e) { DataAccess da = new DataAccess(); double Lat = Convert.ToDouble(Latitude.Value); double Lon = Convert.ToDouble(Longitude.Value); List<LocationDataModel.Place> places = da.NearByLocations(Lat, Lon); lvPlaces.DataSource = places; lvPlaces.SelectedIndex = -1; lvPlaces.DataBind(); pnlPlaces.Visible = true; pnlStart.Visible = false; } protected void ReturnFromPlaces_Click(object sender, EventArgs e) { pnlPlaces.Visible = false; pnlStart.Visible = true; } protected void ReturnFromDeals_Click(object sender, EventArgs e) { pnlCoupons.Visible = false; pnlStart.Visible = true; } protected void btnImHereNow_Click(object sender, EventArgs e) { long PlaceId = Convert.ToInt32(hdPlaceId.Value); string UserName = Membership.GetUser().UserName; string WhatsHappening = txtWhatsHappening.Text; double UserLat = Convert.ToDouble(Latitude.Value); double UserLon = Convert.ToDouble(Longitude.Value); DataAccess da = new DataAccess(); da.StoreUserAT(UserName, PlaceId, WhatsHappening, UserLat, UserLon); } protected void lbImHereNowReturn_Click(object sender, EventArgs e) { pnlImHereNow.Visible = false; pnlPlaces.Visible = true; } protected void lbBackToBeginning_Click(object sender, EventArgs e) { pnlStart.Visible = true; pnlImHereNow.Visible = false; } protected void lbWhereIveBeen_Click(object sender, EventArgs e) { string UserName = Membership.GetUser().UserName; pnlStart.Visible = false; pnlIveBeenHere.Visible = true; DataAccess da = new DataAccess(); lvWhereIveBeen.DataSource = da.UserATs(UserName, 0, 15); lvWhereIveBeen.DataBind(); } protected void lbIveBeenHereBack_Click(object sender, EventArgs e) { pnlIveBeenHere.Visible = false; pnlStart.Visible = true; } protected void lbPlaceIveBeen_Click(object sender, EventArgs e) { LinkButton lb = (LinkButton)sender; ListViewItem lvi = (ListViewItem)lb.Parent.Parent; HiddenField hdATID = (HiddenField)lvi.FindControl("hdATID"); Int64 ATID = Convert.ToInt64(hdATID.Value); DataAccess da = new DataAccess(); pnlIveBeenHere.Visible = false; pnlPlaceIveBeen.Visible = true; var plac = da.GetPlaceViaATID(ATID); hdPlaceIveBeenPlaceId.Value = plac.PlaceId.ToString(); hdPlaceIveBeenLatitude.Value = plac.Latitude.ToString(); hdPlaceIveBeenLongitude.Value = plac.Longitude.ToString(); lblPlaceIveBeenName.Text = plac.Name; lblPlaceIveBeenAddress.Text = plac.Address1; lblPlaceIveBeenCity.Text = plac.City; lblPlaceIveBeenState.Text = plac.Province.ProvinceName; lblPlaceIveBeenZipCode.Text = plac.ZipCode; lblPlaceIveBeenCountry.Text = plac.Country.Name; } protected void lbNotListed_Click(object sender, EventArgs e) { SetupAddPoint(); pnlPlaces.Visible = false; } protected void lbAddAPlace_Click(object sender, EventArgs e) { SetupAddPoint(); } private void SetupAddPoint() { double lat = Convert.ToDouble(Latitude.Value); double lon = Convert.ToDouble(Longitude.Value); DataAccess da = new DataAccess(); var zip = da.WhereAmIAt(lat, lon); if (zip.Count > 0) { var z0 = zip[0]; txtCity.Text = z0.City; txtZipCode.Text = z0.ZipCode; ddlProvince.ClearSelection(); if (z0.ProvinceId.HasValue == true) { foreach (ListItem li in ddlProvince.Items) { if (li.Value == z0.ProvinceId.Value.ToString()) { li.Selected = true; break; } } } } pnlAddPlace.Visible = true; pnlStart.Visible = false; } protected void lbAddPlaceReturn_Click(object sender, EventArgs e) { pnlAddPlace.Visible = false; pnlStart.Visible = true; liPlaceAddMessage.Visible = false; PlaceAddMessage.Text = String.Empty; } protected void lbPlaceIveBeenBack_Click(object sender, EventArgs e) { pnlIveBeenHere.Visible = true; pnlPlaceIveBeen.Visible = false; } protected void lbPlaceIveBeenBeginning_Click(object sender, EventArgs e) { pnlPlaceIveBeen.Visible = false; pnlStart.Visible = true; } protected string DisplayName(object val) { string strVal = Convert.ToString(val); if (AppleIPhone.IsIPad()) { ipd = iPhoneDevice.iPad; } if (AppleIPhone.IsIPhone()) { ipd = iPhoneDevice.iPhone; } if (AppleIPhone.IsIPodTouch()) { ipd = iPhoneDevice.iPodTouch; } return (iPhoneHelper.DisplayContentOnMenu(strVal, ipd)); }} iPhoneHelper.cs file: using System;using System.Collections.Generic;using System.Linq;using System.Web; public enum iPhoneDevice{ iPhone, iPodTouch, iPad}/// <summary>/// Summary description for iPhoneHelper/// </summary>/// public class iPhoneHelper{ public iPhoneHelper() { // // TODO: Add constructor logic here // } // This code is stupid in retrospect. Use css to solve this problem public static string DisplayContentOnMenu(string val, iPhoneDevice ipd) { string Return = val; string Elipsis = "..."; int iPadMaxLength = 30; int iPhoneMaxLength = 15; if (ipd == iPhoneDevice.iPad) { if (Return.Length > iPadMaxLength) { Return = Return.Substring(0, iPadMaxLength - Elipsis.Length) + Elipsis; } } else { if (Return.Length > iPhoneMaxLength) { Return = Return.Substring(0, iPhoneMaxLength - Elipsis.Length) + Elipsis; } } return (Return); }} Source code for the ViewStatePage: using System;using System.Data;using System.Data.SqlClient;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls; /// <summary>/// Summary description for BasePage/// </summary>#region Base class for a page.public class ViewStatePage : System.Web.UI.Page{ PageStatePersisterToDatabase myPageStatePersister; public ViewStatePage() : base() { myPageStatePersister = new PageStatePersisterToDatabase(this); } protected override PageStatePersister PageStatePersister { get { return myPageStatePersister; } } }#endregion #region This class will override the page persistence to store page state in a database.public class PageStatePersisterToDatabase : PageStatePersister{ private string ViewStateKeyField = "__VIEWSTATE_KEY"; private string _exNoConnectionStringFound = "No Database Configuration information is in the web.config."; public PageStatePersisterToDatabase(Page page) : base(page) { } public override void Load() { // Get the cache key from the web form data System.Int64 key = Convert.ToInt64(Page.Request.Params[ViewStateKeyField]); Pair state = this.LoadState(key); // Abort if cache object is not of type Pair if (state == null) throw new ApplicationException("Missing valid " + ViewStateKeyField); // Set view state and control state ViewState = state.First; ControlState = state.Second; } public override void Save() { // No processing needed if no states available if (ViewState == null && ControlState != null) return; System.Int64 key; IStateFormatter formatter = this.StateFormatter; Pair statePair = new Pair(ViewState, ControlState); // Serialize the statePair object to a string. string serializedState = formatter.Serialize(statePair); // Save the ViewState and get a unique identifier back. key = SaveState(serializedState); // Register hidden field to store cache key in // Page.ClientScript does not work properly with Atlas. //Page.ClientScript.RegisterHiddenField(ViewStateKeyField, key.ToString()); ScriptManager.RegisterHiddenField(this.Page, ViewStateKeyField, key.ToString()); } private System.Int64 SaveState(string PageState) { System.Int64 i64Key = 0; string strConn = String.Empty, strProvider = String.Empty; string strSql = "insert into tblPageState ( SerializedState ) values ( '" + SqlEscape(PageState) + "');select scope_identity();"; SqlConnection sqlCn; SqlCommand sqlCm; try { GetDBConnectionString(ref strConn, ref strProvider); sqlCn = new SqlConnection(strConn); sqlCm = new SqlCommand(strSql, sqlCn); sqlCn.Open(); i64Key = Convert.ToInt64(sqlCm.ExecuteScalar()); if (sqlCn.State != ConnectionState.Closed) { sqlCn.Close(); } sqlCn.Dispose(); sqlCm.Dispose(); } finally { sqlCn = null; sqlCm = null; } return i64Key; } private Pair LoadState(System.Int64 iKey) { string strConn = String.Empty, strProvider = String.Empty, SerializedState = String.Empty, strMinutesInPast = GetMinutesInPastToDelete(); Pair PageState; string strSql = "select SerializedState from tblPageState where tblPageStateID=" + iKey.ToString() + ";" + "delete from tblPageState where DateUpdated<DateAdd(mi, " + strMinutesInPast + ", getdate());"; SqlConnection sqlCn; SqlCommand sqlCm; try { GetDBConnectionString(ref strConn, ref strProvider); sqlCn = new SqlConnection(strConn); sqlCm = new SqlCommand(strSql, sqlCn); sqlCn.Open(); SerializedState = Convert.ToString(sqlCm.ExecuteScalar()); IStateFormatter formatter = this.StateFormatter; if ((null == SerializedState) || (String.Empty == SerializedState)) { throw (new ApplicationException("No ViewState records were returned.")); } // Deserilize returns the Pair object that is serialized in // the Save method. PageState = (Pair)formatter.Deserialize(SerializedState); if (sqlCn.State != ConnectionState.Closed) { sqlCn.Close(); } sqlCn.Dispose(); sqlCm.Dispose(); } finally { sqlCn = null; sqlCm = null; } return PageState; } private string SqlEscape(string Val) { string ReturnVal = String.Empty; if (null != Val) { ReturnVal = Val.Replace("'", "''"); } return (ReturnVal); } private void GetDBConnectionString(ref string ConnectionStringValue, ref string ProviderNameValue) { if (System.Configuration.ConfigurationManager.ConnectionStrings.Count > 0) { ConnectionStringValue = System.Configuration.ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString; ProviderNameValue = System.Configuration.ConfigurationManager.ConnectionStrings["ApplicationServices"].ProviderName; } else { throw new ConfigurationErrorsException(_exNoConnectionStringFound); } } private string GetMinutesInPastToDelete() { string strReturn = "-60"; if (null != System.Configuration.ConfigurationManager.AppSettings["MinutesInPastToDeletePageState"]) { strReturn = System.Configuration.ConfigurationManager.AppSettings["MinutesInPastToDeletePageState"].ToString(); } return (strReturn); }}#endregion AppleiPhone.cs file: using System;using System.Collections.Generic;using System.Linq;using System.Web; /// <summary>/// Summary description for AppleIPhone/// </summary>public class AppleIPhone{ public AppleIPhone() { // // TODO: Add constructor logic here // } static public bool IsIPhoneOS() { return (IsIPad() || IsIPhone() || IsIPodTouch()); } static public bool IsIPhone() { return IsTest("iPhone"); } static public bool IsIPodTouch() { return IsTest("iPod"); } static public bool IsIPad() { return IsTest("iPad"); } static private bool IsTest(string Agent) { bool bl = false; string ua = HttpContext.Current.Request.UserAgent.ToLower(); try { bl = ua.Contains(Agent.ToLower()); } catch { } return (bl); }} Master page .cs: using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls; public partial class MasterPages_iPhoneMaster : System.Web.UI.MasterPage{ protected void Page_Load(object sender, EventArgs e) { HtmlHead head = Page.Header; HtmlMeta meta = new HtmlMeta(); if (AppleIPhone.IsIPad() == true) { meta.Content = "width=400,user-scalable=no"; head.Controls.Add(meta); } else { meta.Content = "width=device-width, user-scalable=no"; meta.Attributes.Add("name", "viewport"); } meta.Attributes.Add("name", "viewport"); head.Controls.Add(meta); HtmlLink cssLink = new HtmlLink(); HtmlGenericControl script = new HtmlGenericControl("script"); script.Attributes.Add("type", "text/javascript"); script.Attributes.Add("src", ResolveUrl("~/Scripts/iWebKit/javascript/functions.js")); head.Controls.Add(script); cssLink.Attributes.Add("rel", "stylesheet"); cssLink.Attributes.Add("href", ResolveUrl("~/Scripts/iWebKit/css/style.css") ); cssLink.Attributes.Add("type", "text/css"); head.Controls.Add(cssLink); HtmlGenericControl jsLink = new HtmlGenericControl("script"); //jsLink.Attributes.Add("type", "text/javascript"); //jsLink.Attributes.Add("src", ResolveUrl("~/Scripts/jquery-1.4.1.min.js") ); //head.Controls.Add(jsLink); HtmlLink appleIcon = new HtmlLink(); appleIcon.Attributes.Add("rel", "apple-touch-icon"); appleIcon.Attributes.Add("href", ResolveUrl("~/apple-touch-icon.png")); HtmlMeta appleMobileWebAppStatusBarStyle = new HtmlMeta(); appleMobileWebAppStatusBarStyle.Attributes.Add("name", "apple-mobile-web-app-status-bar-style"); appleMobileWebAppStatusBarStyle.Attributes.Add("content", "black"); head.Controls.Add(appleMobileWebAppStatusBarStyle); } internal string FindPath(string Location) { string Url = Server.MapPath(Location); return (Url); }}

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SQLAuthority News – A Successful Community TechDays at Ahmedabad – December 11, 2010

- by pinaldave

We recently had one of the best community events in Ahmedabad. We were fortunate that we had SQL Experts from around the world to have presented at this event. This gathering was very special because besides Jacob Sebastian and myself, we had two other speakers traveling all the way from Florida (Rushabh Mehta) and Bangalore (Vinod Kumar).There were a total of nearly 170 attendees and the event was blast. Here are the details of the event. Pinal Dave Presenting at Community Tech Days On the day of the event, it seemed to be the coldest day in Ahmedabad but I was glad to see hundreds of people waiting for the doors to be opened some hours before. We started the day with hot coffee and cookies. Yes, food first; and it was right after my keynote. I could clearly see that the coffee did some magic right away; the hall was almost full after the coffee break. Jacob Sebastian Presenting at Community Tech Days Jacob Sebastian, an SQL Server MVP and a close friend of mine, had an unusual job of surprising everybody with an innovative topic accompanied with lots of question-and-answer portions. That’s definitely one thing to love Jacob, that is, the novelty of the subject. His presentation was entitled “Best Database Practices for the .Net”; it really created magic on the crowd. Pinal Dave Presenting at Community Tech Days Next to Jacob Sebastian, I presented “Best Database Practices for the SharePoint”. It was really fun to present Database with the perspective of the database itself. The main highlight of my presentation was when I talked about how one can speed up the database performance by 40% for SharePoint in just 40 seconds. It was fun because the most important thing was to convince people to use the recommendation as soon as they walk out of the session. It was really amusing and the response of the participants was remarkable. Pinal Dave Presenting at Community Tech Days My session was followed by the most-awaited session of the day: that of Rushabh Mehta. He is an international BI expert who traveled all the way from Florida to present “Self Service BI” session. This session was funny and truly interesting. In fact, no one knew BI could be this much entertaining and fascinating. Rushabh has an appealing style of presenting the session; he instantly got very much interaction from the audience. Rushabh Mehta Presenting at Community Tech Days We had a networking lunch break in-between, when we talked about many various topics. It is always interesting to get in touch with the Community and feel a part of it. I had a wonderful time during the break. Vinod Kumar Presenting at Community Tech Days After lunch was apparently the most difficult session for the presenter as during this time, many people started to fall sleep and get dizzy. This spot was requested by Microsoft SQL Server Evangelist Vinod Kumar himself. During our discussion he suggested that if he gets this slot he would make sure people are up and more interactive than during the morning session. Just like always, this session was one of the best sessions ever. Vinod is true to his word as he presented the subject of “Time Management for Developer”. This session was the biggest hit in the event because the subject was instilled in the mind of every participant. Vinod Kumar Presenting at Community Tech Days Vinod’s session was followed by his own small session. Due to “insistent public demand”, he presented an interesting subject, “Tricks and Tips of SQL Server“. In 20 minutes he has done another awesome job and all attendees wanted more of the tricks. Just as usual he promised to do that next time for us. Vinod’s session was succeeded by Prabhjot Singh Bakshi’s session. He presented an appealing Silverlight concept. Just the same, he did a great job and people cheered him. Prabhjot Presenting at Community Tech Days We had a special invited speaker, Dhananjay Kumar, traveling all the way from Pune. He always supports our cause to help the Community in empowering participants. He presented the topic about Win7 Mobile and SharePoint integration. This was something many did not even expect to be possible. Kudos to Dhananjay for doing a great job. Dhananjay Kumar Presenting at Community Tech Days All in all, this event was one of the best in the Community Tech Days series in Ahmedabad. We were fortunate that legends from the all over the world were present here to present to the Community. I’d say never underestimate the power of the Community and its influence over the direction of the technology. Vinod Kumar Presenting trophy to Pinal Dave Vinod Kumar Presenting trophy to Pinal Dave This event was a very special gathering to me personally because of your support to the vibrant Community. The following awards were won for last year’s performance: Ahmedabad SQL Server User Group (President: Jacob Sebastian; Leader: Pinal Dave) – Best Tier 2 User Group Best Development Community Individual Contributor – Pinal Dave Speakers I was very glad to receive the award for our entire Community. Attendees at Community Tech Days I want to say thanks to Rushabh Mehta, Vinod Kumar and Dhananjay Kumar for visiting the city and presenting various technology topics in Community Tech Days. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: MVP, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology

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Session Report: What’s New in JSF: A Complete Tour of JSF 2.2

- by Janice J. Heiss

On Wednesday, Ed Burns, Consulting Staff Member at Oracle, presented a session, CON3870 -- “What’s New in JSF: A Complete Tour of JSF 2.2,” in which he provided an update on recent developments in JavaServer Faces 2.2. He began by emphasizing that, “JavaServer Faces 2.2 continues the evolution of the Java EE standard user interface technology. Like previous releases, this iteration is very community-driven and transparent.” He pointed out that since JSF was introduced at the 2001 JavaOne Keynote, it has had a long and successful run and has found a home in applications where the UI logic resides entirely on the server where the model and UI logic is. In such cases, the browser performs fairly simple functions. However, developers can take advantage of the power of browsers, something that Project Avatar is focused on by letting developers author their applications so the UI logic is running on the client and communicating to the back end via RESTful web services. “Most importantly,” remarked Burns, “JSF 2.2 offers a really good migration path because even in the scope of one application you could have an app written with JSF that has its UI logic on the server and, on a gradual basis, you could migrate parts of the app over to use client-side technologies. This can be done at any level of granularity – per page or per collection of pages. It all depends on what you want to do.” His presentation, which focused on the basic new features of JSF 2.2, began by restating the scope of JSF and encouraged attendees to check out Roger Kitain’s session: CON5133 “Techniques for Responsive Real-Time Web UIs.” Burns explained that JSF has endured because, “We still need web apps that are maintainable, localizable, quick to build, accessible, secure, look great and are fun to use.” It is used on every continent – the curious can go here to check out where its unofficial usage is tracked. He emphasized the significance of the UI logic being substantially on the server. This: Separates Component Semantics from Rendering, Allows components to “own” their little patch of the UI -- encode/decode, And offers a well-defined lifecycle: Inversion of Control. Burns reminded attendees that JSR-344, the spec for JSF 2.2, is now on Java Community Process 2.8, a revised version of the JCP that allows for more openness and transparency. He then offered some tools for community access to JSF 2.2: * Public java.net projects spec http://jsf-spec.java.net/ impl http://jsf.java.net/ Open Source: GPL+Classpath Exception * Mailing Lists [email protected] Public readable archive, JSPA signed member read/write [email protected] Public readable archive, any java.net member read/write All mail sent to jsr344-experts is sent to users. * Issue Tracker spec http://jsf-spec.java.net/issues/ impl http://jsf.java.net/issues/ JSF 2.2, which is JSR 344, has a Public Review Draft planned by December 2012 with no need for a Renewal Ballot. The Early Draft Review of JSR 344 was published on December 8, 2011. Interested developers are encouraged to offer their input. Six Big Ticket Features of JSF 2.2 Burns summarized the six big ticket features of JSF 2.2:* HTML5 Friendly Markup Support Pass through attributes and elements * Faces Flows* Cross Site Request Forgery Protection* Loading Facelets via ResourceHandler* File Upload Component* Multi-Templating He explained that he called it “HTML 5 friendly” because there is really nothing HTML 5 specific about it -- it could be 4. But it enables developers to use new elements that are present in HTML5 without having a JSF component library that is written to take advantage of those specifically. It gives the page author the ability to use plain HTML5 to write their page, but to still take advantage of the server-side available in JSF. He presented a demo showing JSF 2.2’s ability to leverage the expressiveness of HTML5. Burns then explained the significance of face flows, which offer function points and quantify how much work has taken place, something of great value to JSF users. He went on to talk about JSF 2.2.’s cross-site request forgery protection (CSRF) and offered details about how it protects applications against attack. Then he talked about JSF 2.2’s File Upload Component and explained that the final specification will have Ajax and non-Ajax support. The current milestone has non-Ajax support implemented. He then went on to explain its capacity to add facelets through ResourceHandler. Previously, JSF 2.0 added Facelets and ResourceHandler as disparate units; now in JSF 2.2 the two concepts are unified. Finally, he explained the concept of multi-templating in JSF 2.2 and went on to discuss more medium-level features of the release. For an easy, low maintenance way of staying in touch with JSF developments go to JSF’s Twitter page where every month or so, important updates are offered.

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Developer Training – Various Options for Maximum Benefit – Part 4

- by pinaldave

Developer Training - Importance and Significance - Part 1 Developer Training – Employee Morals and Ethics – Part 2 Developer Training – Difficult Questions and Alternative Perspective - Part 3 Developer Training – Various Options for Developer Training – Part 4 Developer Training – A Conclusive Summary- Part 5 If you have been reading this series, by now you are aware of all the pros and cons that can come along with training. We’ve asked and answered hard questions, and investigated them “whys” and “hows” of training. Now it is time to talk about all the different kinds of training that are out there! On Job Training The most common type of training is on the job training. Everyone receives this kind of education – even experts who come in to consult have to be taught where the printer, pens, and copy machines are. If you are thinking about more concrete topics, though, on the job training can be some of the easiest to come across. Picture this: someone in the company whom you really admire is hard at work on a project. You come up to them and ask to help them out – if they are a busy developer, the odds are that they will say “yes, please!” If you phrase your question as an offer of help, you can receive training without ever putting someone in the awkward position of acting as a mentor. However, some people may want the task of being a mentor. It can never hurt to ask. Most people will be more than willing to pass their knowledge along. Extreme Programming If your company and coworkers are willing, you can even investigate Extreme Programming. This is a type of programming that allows small teams to quickly develop code and products that are released with almost immediate user feedback. You can find more information at http://www.extremeprogramming.org/. If this is something your company could use, suggest it to your supervisor. Even if they say no, it will make it clear that you are a go-getter who is interested in new and exciting projects. If the answer is yes, then you have the opportunity to get some of the best on the job training around. In Person Training Click on Image to Enlarge When you say the word “training,” most people’s minds go back to the classroom, an image they are familiar with. While training doesn’t always have to be in a traditional setting, because it is so familiar it can also be the most valuable type of training. There are many ways to get training through a live instructor. Some companies may be willing to send a representative to you, where employees will get training, sometimes food and coffee, and a live instructor who can answer questions immediately. Sometimes these trainers are also able to do consultations at the same time, which can invaluable to a company. If you are the one to asks your supervisor for a training session that can also be turned into a consultation, you may stick in their minds as an incredibly dedicated employee. If you can’t find a representative, local colleges can also be a good resource for free or cheap classes – or they may have representatives coming who are willing to take on a few more students. Benefits of On Demand Developer Training Of course, you can often get the best of all these types of training with online or On Demand training. You can get the benefit of a live instructor who is willing to answer questions (although in this case, usually through e-mail or other online venues), there are often real-world examples to follow along – like on the job training – and best of all you can learn whenever you have the time or need. Did a problem with your server come up at midnight when all your supervisors are safe at home and probably in bed? No problem! On Demand training is especially useful if you need to slow down, pause, or rewind a training session. Not even a real-life instructor can do that! When I was writing this blog post, I felt that each of the subject, which I have covered can be blog posts of itself. However, I wanted to keep the the blog post concise and so touch based on three major training aspects 1) On Job Training 2) In Person Training and 3) Online training. Here is the question for you – is there any other kind of training methods available, which are effective and one should consider it? If yes, what are those, I may write a follow up blog post on the same subject next week. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Developer Training, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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6 Interesting Facts About NASA’s Mars Rover ‘Curiosity’

- by Gopinath

Humans quest for exploring the surrounding planets to see whether we can live there or not is taking new shape today. NASA’s Mars probing robot, Curiosity, blasted off today on its 9 months journey to reach Mars and explore it for the possibilities of life there. Scientist says that Curiosity is one most advanced rover ever launched to probe life on other planets. Here is the launch video and some analysis by a news reporter Lets look at the 6 interesting facts about the mission 1. It’s as big as a car Curiosity is the biggest ever rover ever launched by NASA to probe life on outer planets. It’s as big as a car and almost double the size of its predecessor rover Spirit. The length of Curiosity is around 9 feet 10 inches(3 meters), width is 9 feet 1 inch (2.8 meters) and height is 7 feet (2.1 meters). 2. Powered by Plutonium – Lasts 24×7 for 23 months The earlier missions of NASA to explore Mars are powered by Solar power and that hindered capabilities of the rovers to move around when the Sun is hiding. Due to dependency of Sun the earlier rovers were not able to traverse the places where there is no Sun light. Curiosity on the other hand is equipped with a radioisotope power system that generates electricity from the heat emitted by plutonium’s radioactive decay. The plutonium weighs around 10 pounds and can generate power required for operating the rover close to 23 weeks. The best part of the new power system is, Curiosity can roam around in darkness, light and all year around. 3. Rocket powered backpack for a science fiction style landing The Curiosity is so heavy that NASA could not use parachute and balloons to air-drop the rover on the surface of Mars like it’s previous missions. They are trying out a new science fiction style air-dropping mechanism that is similar to sky crane heavy-lift helicopter. The landing of the rover begins first with entry into the Mars atmosphere protected by a heat shield. At about 6 miles to the surface, the heat shield is jettisoned and a parachute is deployed to glide the rover smoothly. When the rover touches 3 miles above the surface, the parachute is jettisoned and the eight motors rocket backpack is used for a smooth and impact free landing as shown in the image. Here is an animation created by NASA on the landing sequence. If you are interested in getting more detailed information about the landing process check this landing sequence picture available on NASA website 4. Equipped with Star Wars style laser gun Hollywood movie directors and novelist always imagined aliens coming to earth with spaceships full of laser guns and blasting the objects which comes on their way. With Curiosity the equations are going to change. It has a powerful laser gun equipped in one of it’s arms to beam laser on rocks to vaporize them. This is not part of any assault mission Curiosity is expected to carry out, the laser gun is will be used to carry out experiments to detect life and understand nature. 5. Most sophisticated laboratory powered by 10 instruments Around 10 state of art instruments are part of Curiosity rover and the these 10 instruments form a most advanced rover based lab ever built by NASA. There are instruments to cut through rocks to examine them and other instruments will search for organic compounds. Mounted cameras can study targets from a distance, arm mounted instruments can study the targets they touch. Microscopic lens attached to the arm can see and magnify tiny objects as tiny as 12.5 micro meters. 6. Rover Carrying 1.24 million names etched on silicon Early June 2009 NASA launched a campaign called “Send Your Name to Mars” and around 1.24 million people registered their names through NASA’s website. All those 1.24 million names are etched on Silicon chips mounted onto Curiosity’s deck. If you had registered your name in the campaign may be your name is going to reach Mars soon. Curiosity On Web If you wish to follow the mission here are few links to help you NASA’s Curiosity Web Page Follow Curiosity on Facebook Follow @MarsCuriosity on Twitter Artistic Gallery Image of Mars Rover Curiosity A printable sheet of Curiosity Mission [pdf] Images credit: NASA This article titled,6 Interesting Facts About NASA’s Mars Rover ‘Curiosity’, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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Silverlight 5 Hosting :: Features in Silverlight 5 and Release Date

- by mbridge

Silverlight 5 is finally announced in the Silverlight FireStarter Event on the 2nd December, 2010. This new version of Silverlight which was earlier labeled as 'Future of Microsoft Silverlight' has now come much closer to go live as the first Silverlight 5 Beta version is expected to be shipped during the early months of 2011. However for the full fledged and the final release of Silverlight 5, we have to wait many more months as the same is likely to be made available within the Q3 2011. As would have been usually expected, this latest edition would feature many new capabilities thereby extending the developer productivity to a whole new dimension of premium media experience and feature-rich business applications. It comes along with many new feature updates as well as the inclusion of new technologies to improve the standard of the Silverlight applications which are now fine-tuned to produce next generation business and media solutions that is capable to meet the requirements of the advanced web-based app development. The Silverlight 5 is all set to replace the previous fourth version which now includes more than forty new features while also dropping various deprecated elements that was prevalent earlier. It has brought around some major performance enhancements and also included better support for various other tools and technologies. Following are some of the changes that are registered to be available under the Silverlight 5 Beta edition which is scheduled to be launched during the Q1 2011. Silverlight 5 : Premium Media Experiences The media features of Silverlight 5 has seen some major enhancements with a lot of optimizations being made to deliver richer solutions. It's capability has now been extended to make things easier, faster and capable of performing the desired tasks in the most efficient manner. The Silverlight media solutions has already been a part of many companies in the recent days where various on-demand Silverlight services were featured but with the arrival of the next generation premium media solution of Silverlight 5, it is expected to register new heights of success and global user acclamation for using it with many esteemed web-based projects and media solutions. - The most happening element in the new Silverlight 5 will be its support for utilizing the GPU based hardware acceleration which is intended to lower down the CPU load to a significant extent and thereby allowing faster rendering of media contents without consuming much resources. This feature is believed to be particularly helpful for low configured machines to run full HD media content without any lagging caused due to processor load. It will hence be one great feature to revolutionize the new generation high quality media contents to be available within the web in a more efficient manner with its hardware decoded video playback capabilities. - With the inclusion of hardware video decoding to minimize the processor load, the Silverlight 5 also comes with another optimization enhancement to also reduce the power consumption level by making new methods to deal with the power-saver settings. With this optimization in effect, the computer would be automatically allowed to switch to sleep mode while no video playback is in progress and also to prevent any screensavers to popup and cause annoyances during any video playback. There would also be other power saver options which will be made available to best suit the users requirements and purpose. - The Silverlight trickplay feature is another great way to tweak any silverlight powered media content as is used for many video tutorial sites or for dealing with any sort of presentations. This feature enables the user to modify the playback speed to either slowdown or speedup during the playback durations based on the requirements without compromising on the quality of output. Normally such manipulations always makes the content's audio to go off-pitch, but the same will not be the case with TrickPlay and the audio would seamlessly progress with the video without skipping any of its part. - In addition to all of the above, the new Silverlight 5 will be featuring wireless control of all the media contents by making use of remote controllers. With the use of such remote devices, it will be easier to handle the various media playback controls thereby providing more freedom while experiencing the premium media services. Silverlight 5 : Business Application Development The application development standard has been extended with more possibilities by bringing forth new and useful technologies and also reviving the existing methods to work better than what it was used to. From the UI improvements to advanced technical aspects, the Silverlight 5 scores high on all grounds to produce great next generation business delivered applications by putting in more creativity and resourceful touch to all the apps being produced with it. - The WPF feature of Silverlight is made more effective by introducing new standards of Databinding which is intended to improve the productivity standards of the Silverlight application developer. It brings in a lot of convenience in debugging the databinding components or expressions and hence making things work in a flawless manner. Some additional features related to databinding includes that of Ancestor RelativeSource, Implicit DataTemplates and Model View ViewModel (MVVM) support with DataContextChanged event and many other new features relating it. - It now comes with a refined text and printing service which facilitates better clarity of the text rendering and also many positive changes which are being applied to the layout pattern. New supports has been added to include OpenType font, multi-column text, linked-text containers and character leading support to name a few among the available features.This also includes some important printing aspects like that of Postscript Vector Printing API which allows to program our printing tasks in a user defined way and Pivot functionality for visualization concerns of informations. - The Graphics support is the key improvements being incorporated which now enables to utilize three dimensional graphics pattern using GPU acceleration. It can manage to provide some really cool visualizations being curved to provide media contents within the business apps with also the support for full HD contents at 1080p quality. - Silverlight 5 includes the support for 64-bit operating systems and relevant browsers and is also optimized to provide better performance. It can support the background thread for the networking which can reduce the latency of the network to a considerable extent. The Out-of-Browser functionality adds the support for utilizing various libraries and also the Win32 API. It also comes with testing support with VS 2010 which is mostly an automated procedure and has also enabled increased security aspects of all the Silverlight 5 developed applications by using the improved version of group policy support.

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Surface development: it’s just like software development

- by Dennis Vroegop

Surface is magic. Everyone using it seems to think that way. And I have to be honest, after working for almost 2 years with the platform I still get that special feeling the moment I turn on the unit to do some more work. The whole user experience, the rich environment of the SDK, the touch, even the look and feel of the Surface environment is so much different from the stuff I’ve been working on all my career that I am still bewildered by it. But… and this is a big but.. in the end we’re still talking about a computer and that needs software to become useful. Deep down the magic of the Surface unit there is a PC somewhere, running Windows Vista and the .net framework 3.5. When you write that magic software that makes the platform come alive you’re still working with .net, WPF/XNA, C#, VB.Net and all those other tools and technologies you know so well. Sure, the whole user experience is different from what you’ve known. And the way of thinking about users, their interaction and the positioning of screen elements requires a whole new paradigm. And that takes time. It took me about half a year before I had the feeling I got it nailed down. But when that moment came (about 18 months ago…) I realized that everything I had learned so far on software development still is true when it comes to Surface. The last 6 months I have been working with some people with a different background to start a new company. The idea was that the new company would be focussing on Surface and Surface only. These people come from a marketing background and had some good ideas for some applications. And I have to admit: their ideas were good. Very good. Where it all fell down of course is that these ideas need to be implemented in a piece of software. And creating great software takes skilled developers and a lot of time and money. That’s where things went wrong: the marketing guys didn’t realize and didn’t want to realize that software development is a job that takes skill. You can’t just hire a bunch of developers and expect them to deliver the best sort of software, especially not when it comes to Surface. I tried to explain that yes, their User Interface in Photoshop looked great, but no: I couldn’t develop an application like that in a weeks time. Even worse: the while backend of the software (WCF for communications, SQL Server for the database, etc) would take a lot more time than the frontend. They didn’t understand. It took them a couple of days to drawn the UI in Photoshop so in Blend I should be able to build the software in about the same amount of time. Well, you and I know that it doesn’t work that way. Software is hard to write, and even harder to write well, and it takes skill and dedication. It’s not something you can do as fast as you can draw a mock up for a Surface application in Photohop. The same holds true for web applications of course. A lot of designers there fail to appreciate the hard work that goes into writing the plumbing for a good web app that can handle thousands of users. Although the UI is very important, it’s not all there is to it. And in Surface development this is the same. The UI should create the feeling of magic, but the software behind it is what makes it come alive. And that takes time. A lot of time. So brush of you skills and don’t throw them away if you start developing for Surface. Because projects (and colaborations) can fail there as hard as they can in any other area of software development. On a side note: we decided to stop the colaboration (something the other parties involved didn’t appreciate and were very angry about) and decided to hire a designer for the Surface projects. The focus is back where it belongs: on the software development we know so well and have been doing very well for 13 years. UI is just a part of the whole project and not the end product. So my company Detrio is still going strong when it comes to develivering Surface solutions but once again from a technological background, not a marketing background.

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Cant correctly install Lazarus

- by user206316

I have a little problem with installing and running Lazarus. I just upgrade ubuntu from 13.04 to 13.10. When i had 13.04, i could install lazarus without any problems, but in 13.10 lazarus magicaly dissapeared, and when i tried install it from ubuntu software center, it said something like in my software resources lazarus-ide-0.9.30.4 doesnt exist. After some research on net i tried delete all files from earlier installations, download deb packages from sourceforge and install them, but when i want to instal fpc-src, error shows up with output: (Reading database ... 100% (Reading database ... 239063 files and directories currently installed.) Unpacking fpc-src (from .../Stiahnut/Lazarus/fpc-src.deb) ... dpkg: error processing /home/richi/Stiahnut/Lazarus/fpc-src.deb (--install): trying to overwrite '/usr/share/fpcsrc/2.6.2/rtl/nativent/tthread.inc', which is also in package fpc-source-2.6.2 2.6.2-5 dpkg-deb (subprocess): decompressing archive member: internal gzip write error: Broken pipe dpkg-deb: error: subprocess <decompress> returned error exit status 2 dpkg-deb (subprocess): cannot copy archive member from '/home/richi/Stiahnut/Lazarus/fpc-src.deb' to decompressor pipe: failed to write (Broken pipe) when i started lazarus, it of course tell me that it cant find fpc compier and fpc sources. So, please, i really need program for school and i dont wanna reinstall os anymore or something like that :( (Ubuntu 13.10 64bit) P.S: im not skilled in linux so if u know some commands to fix it just write them for copy and paste :) P.P.S:Sorry for bad English, im Slovak xD P.P.P.S: Thank so much for any answers update: output from sudo dpkg -l | grep "^rc" richi@Richi-Ubuntu:~/lazarus1.0.12$ sudo dpkg -l | grep "^rc" rc account-plugin-generic-oauth 0.10bzr13.03.26-0ubuntu1.1 amd64 GNOME Control Center account plugin for single signon - generic OAuth rc appmenu-gtk:amd64 12.10.3daily13.04.03-0ubuntu1 amd64 Export GTK menus over DBus rc appmenu-gtk3:amd64 12.10.3daily13.04.03-0ubuntu1 amd64 Export GTK menus over DBus rc fp-compiler-2.6.0 2.6.0-9 amd64 Free Pascal - compiler rc fp-utils-2.6.0 2.6.0-9 amd64 Free Pascal - utilities rc lazarus-ide-0.9.30.4 0.9.30.4-4 amd64 IDE for Free Pascal - common IDE files rc lazarus-ide-1.0.10 1.0.10+dfsg-1 amd64 IDE for Free Pascal - common IDE files rc lcl-utils-0.9.30.4 0.9.30.4-4 amd64 Lazarus Components Library - command line build tools rc lcl-utils-1.0.10 1.0.10+dfsg-1 amd64 Lazarus Components Library - command line build tools rc libbamf3-1:amd64 0.4.0daily13.06.19~13.04-0ubuntu1 amd64 Window matching library - shared library rc libboost-filesystem1.49.0 1.49.0-4 amd64 filesystem operations (portable paths, iteration over directories, etc) in C++ rc libboost-signals1.49.0 1.49.0-4 amd64 managed signals and slots library for C++ rc libboost-system1.49.0 1.49.0-4 amd64 Operating system (e.g. diagnostics support) library rc libboost-thread1.49.0 1.49.0-4 amd64 portable C++ multi-threading rc libbrlapi0.5:amd64 4.4-8ubuntu4 amd64 braille display access via BRLTTY - shared library rc libcamel-1.2-40 3.6.4-0ubuntu1.1 amd64 Evolution MIME message handling library rc libcolumbus0-0 0.4.0daily13.04.16~13.04-0ubuntu1 amd64 error tolerant matching engine - shared library rc libdns95 1:9.9.2.dfsg.P1-2ubuntu2.1 amd64 DNS Shared Library used by BIND rc libdvbpsi7 0.2.2-1 amd64 library for MPEG TS and DVB PSI tables decoding and generating rc libebackend-1.2-5 3.6.4-0ubuntu1.1 amd64 Utility library for evolution data servers rc libedata-book-1.2-15 3.6.4-0ubuntu1.1 amd64 Backend library for evolution address books rc libedata-cal-1.2-18 3.6.4-0ubuntu1.1 amd64 Backend library for evolution calendars rc libgc1c3:amd64 1:7.2d-0ubuntu5 amd64 conservative garbage collector for C and C++ rc libgd2-xpm:amd64 2.0.36~rc1~dfsg-6.1ubuntu1 amd64 GD Graphics Library version 2 rc libgd2-xpm:i386 2.0.36~rc1~dfsg-6.1ubuntu1 i386 GD Graphics Library version 2 rc libgnome-desktop-3-4 3.6.3-0ubuntu1 amd64 Utility library for loading .desktop files - runtime files rc libgphoto2-2:amd64 2.4.14-2 amd64 gphoto2 digital camera library rc libgphoto2-2:i386 2.4.14-2 i386 gphoto2 digital camera library rc libgphoto2-port0:amd64 2.4.14-2 amd64 gphoto2 digital camera port library rc libgphoto2-port0:i386 2.4.14-2 i386 gphoto2 digital camera port library rc libgtksourceview-3.0-0:amd64 3.6.3-0ubuntu1 amd64 shared libraries for the GTK+ syntax highlighting widget rc libgweather-3-1 3.6.2-0ubuntu1 amd64 GWeather shared library rc libharfbuzz0:amd64 0.9.13-1 amd64 OpenType text shaping engine rc libibus-1.0-0:amd64 1.4.2-0ubuntu2 amd64 Intelligent Input Bus - shared library rc libical0 0.48-2 amd64 iCalendar library implementation in C (runtime) rc libimobiledevice3 1.1.4-1ubuntu6.2 amd64 Library for communicating with the iPhone and iPod Touch rc libisc92 1:9.9.2.dfsg.P1-2ubuntu2.1 amd64 ISC Shared Library used by BIND rc libkms1:amd64 2.4.46-1 amd64 Userspace interface to kernel DRM buffer management rc libllvm3.2:i386 1:3.2repack-7ubuntu1 i386 Low-Level Virtual Machine (LLVM), runtime library rc libmikmod2:amd64 3.1.12-5 amd64 Portable sound library rc libpackagekit-glib2-14:amd64 0.7.6-3ubuntu1 amd64 Library for accessing PackageKit using GLib rc libpoppler28:amd64 0.20.5-1ubuntu3 amd64 PDF rendering library rc libraw5:amd64 0.14.7-0ubuntu1.13.04.2 amd64 raw image decoder library rc librhythmbox-core6 2.98-0ubuntu5 amd64 support library for the rhythmbox music player rc libsdl-mixer1.2:amd64 1.2.12-7ubuntu1 amd64 Mixer library for Simple DirectMedia Layer 1.2, libraries rc libsnmp15 5.4.3~dfsg-2.7ubuntu1 amd64 SNMP (Simple Network Management Protocol) library rc libsyncdaemon-1.0-1 4.2.0-0ubuntu1 amd64 Ubuntu One synchronization daemon library rc libunity-core-6.0-5 7.0.0daily13.06.19~13.04-0ubuntu1 amd64 Core library for the Unity interface. rc libusb-0.1-4:i386 2:0.1.12-23.2ubuntu1 i386 userspace USB programming library rc libwayland0:amd64 1.0.5-0ubuntu1 amd64 wayland compositor infrastructure - shared libraries rc linux-image-3.8.0-19-generic 3.8.0-19.30 amd64 Linux kernel image for version 3.8.0 on 64 bit x86 SMP rc linux-image-3.8.0-31-generic 3.8.0-31.46 amd64 Linux kernel image for version 3.8.0 on 64 bit x86 SMP rc linux-image-extra-3.8.0-19-generic 3.8.0-19.30 amd64 Linux kernel image for version 3.8.0 on 64 bit x86 SMP rc linux-image-extra-3.8.0-31-generic 3.8.0-31.46 amd64 Linux kernel image for version 3.8.0 on 64 bit x86 SMP rc screen-resolution-extra 0.15ubuntu1 all Extension for the GNOME screen resolution applet rc unity-common 7.0.0daily13.06.19~13.04-0ubuntu1 all Common files for the Unity interface.

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Building the Elusive Windows Phone Panorama Control

When the Windows Phone 7 Developer SDK was released a couple of weeks ago at MIX10 many people noticed the SDK doesnt include a template for a Panorama control. Here at Clarity we decided to build our own Panorama control for use in some of our prototypes and I figured I would share what we came up with. There have been a couple of implementations of the Panorama control making their way through the interwebs, but I didnt think any of them really nailed the experience that is shown in the simulation videos. One of the key design principals in the UX Guide for Windows Phone 7 is the use of motion. The WP7 OS is fairly stripped of extraneous design elements and makes heavy use of typography and motion to give users the necessary visual cues. Subtle animations and wide layouts help give the user a sense of fluidity and consistency across the phone experience. When building the panorama control I was fairly meticulous in recreating the motion as shown in the videos. The effect that is shown in the application hubs of the phone is known as a Parallax Scrolling effect. This this pseudo-3D technique has been around in the computer graphics world for quite some time. In essence, the background images move slower than foreground images, creating an illusion of depth in 2D. Here is an example of the traditional use: http://www.mauriciostudio.com/. One of the animation gems I've learned while building interactive software is the follow animation. The premise is straightforward: instead of translating content 1:1 with the interaction point, let the content catch up to the mouse or finger. The difference is subtle, but the impact on the smoothness of the interaction is huge. That said, it became the foundation of how I achieved the effect shown below. Source Code Available HERE Before I briefly describe the approach I took in creating this control..and Ill add some **asterisks ** to the code below as my coding skills arent up to snuff with the rest of my colleagues. This code is meant to be an interpretation of the WP7 panorama control and is not intended to be used in a production application. 1. Layout the XAML The UI consists of three main components : The background image, the Title, and the Content. You can imagine each these UI Elements existing on their own plane with a corresponding Translate Transform to create the Parallax effect. 2. Storyboards + Procedural Animations = Sexy As I mentioned above, creating a fluid experience was at the top of my priorities while building this control. To recreate the smooth scroll effect shown in the video we need to add some place holder storyboards that we can manipulate in code to simulate the inertia and snapping. Using the easing functions built into Silverlight helps create a very pleasant interaction. 3. Handle the Manipulation Events With Silverlight 3 we have some new touch event handlers. The new Manipulation events makes handling the interactivity pretty straight forward. There are two event handlers that need to be hooked up to enable the dragging and motion effects: the ManipulationDelta event : (the most relevant code is highlighted in pink) Here we are doing some simple math with the Manipulation Deltas and setting the TO values of the animations appropriately. Modifying the storyboards dynamically in code helps to create a natural feel.something that cant easily be done with storyboards alone. And secondly, the ManipulationCompleted event: Here we take the Final Velocities from the Manipulation Completed Event and apply them to the Storyboards to create the snapping and scrolling effects. Most of this code is determining what the next position of the viewport will be. The interesting part (shown in pink) is determining the duration of the animation based on the calculated velocity of the flick gesture. By using velocity as a variable in determining the duration of the animation we can produce a slow animation for a soft flick and a fast animation for a strong flick. Challenges to the Reader There are a couple of things I didnt have time to implement into this control. And I would love to see other WPF/Silverlight approaches. 1. A good mechanism for deciphering when the user is manipulating the content within the panorama control and the panorama itself. In other words, being able to accurately determine what is a flick and what is click. 2. Dynamically Sizing the panorama control based on the width of its content. Right now each control panel is 400px, ideally the Panel items would be measured and then panorama control would update its size accordingly. 3. Background and content wrapping. The WP7 UX guidelines specify that the content and background should wrap at the end of the list. In my code I restrict the drag at the ends of the list (like the iPhone). It would be interesting to see how this would effect the scroll experience. Well, Its been fun building this control and if you use it Id love to know what you think. You can download the Source HERE or from the Expression Gallery Erik Klimczak | [email protected] | twitter.com/eklimczDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Lessons from a SAN Failure

- by Bill Graziano

At 1:10AM Sunday morning the main SAN at one of my clients suffered a “partial” failure. Partial means that the SAN was still online and functioning but the LUNs attached to our two main SQL Servers “failed”. Failed means that SQL Server wouldn’t start and the MDF and LDF files mostly showed a zero file size. But they were online and responding and most other LUNs were available. I’m not sure how SANs know to fail at 1AM on a Saturday night but they seem to. From a personal standpoint this worked out poorly: I was out with friends and after more than a few drinks. From a work standpoint this was about the best time to fail you could imagine. Everything was running well before Monday morning. But it was a long, long Sunday. I started tipsy, got tired and ended up hung over later in the day. Note to self: Try not to go out drinking right before the SAN fails. This caught us at an interesting time. We’re in the process of migrating to an entirely new set of servers so some things were partially moved. This made it difficult to follow our procedures as cleanly as we’d like. The benefit was that we had much better documentation of everything on the server. I would encourage everyone to really think through the process of implementing your DR plan and document as much as possible. Following a checklist is much easier than trying to remember at night under pressure in a hurry after a few drinks. I had a series of estimates on how long things would take. They were accurate for any single server failure. They weren’t accurate for a SAN failure that took two servers down. This wasn’t bad but we should have communicated better. Don’t forget how many things are outside the database. Logins, linked servers, DTS packages (yikes!), jobs, service broker, DTC (especially DTC), database triggers and any objects in the master database are all things you need backed up. We’d done a decent job on this and didn’t find significant problems here. That said this still took a lot of time. There were many annoyances as a result of this. Small settings like a login’s default database had a big impact on whether an application could run. This is probably the single biggest area of concern when looking to recreate a server. I’d encourage everyone to go through every single node of SSMS and look for user created objects or settings outside the database. Script out your logins with the proper SID and already encrypted passwords and keep it updated. This makes life so much easier. I used an approach based on KB246133 that worked well. I’ll get my scripts posted over the next few days. The disaster can cause your DR process to fail in unexpected ways. We have a job that scripts out all logins and role memberships and writes it to a file. This runs on the DR server and pulls from the production server. Upon opening the file I found that the contents were a “server not found” error. Fortunately we had other copies and didn’t need to try and restore the master database. This now runs on the production server and pushes the script to the DR site. Soon we’ll get it pushed to our version control software. One of the biggest challenges is keeping your DR resources up to date. Any server change (new linked server, new SQL Server Agent job, etc.) means that your DR plan (and scripts) is out of date. It helps to automate the generation of these resources if possible. Take time now to test your database restore process. We test ours quarterly. If you have a large database I’d also encourage you to invest in a compressed backup solution. Restoring backups was the single larger consumer of time during our recovery. And yes, there’s a database mirroring solution planned in our new architecture. I didn’t have much involvement in things outside SQL Server but this caused many, many things to change in our environment. Many applications today aren’t just executables or web sites. They are a combination of those plus network infrastructure, reports, network ports, IP addresses, DTS and SSIS packages, batch systems and many other things. These all needed a little bit of attention to make sure they were functioning properly. Profiler turned out to be a handy tool. I started a trace for failed logins and kept that running. That let me fix a number of problems before people were able to report them. I also ran traces to capture exceptions. This helped identify problems with linked servers. Overall the thing that gave me the most problem was linked servers. In order for a linked server to function properly you need to be pointed to the right server, have the proper login information, have the network routes available and have MSDTC configured properly. We have a lot of linked servers and this created many failure points. Some of the older linked servers used IP addresses and not DNS names. This meant we had to go in and touch all those linked servers when the servers moved.

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CQRS – Questions and Concerns

- by Dylan Smith

I’ve been doing a lot of learning on CQRS and Event Sourcing over the last little while and I have a number of questions that I haven’t been able to answer. 1. What is the benefit of CQRS when compared to a typical DDD architecture that uses Event Sourcing and properly captures intent and behavior via verb-based commands? (other than Scalability) 2. When using CQRS what do you do with complex query-based logic? I’m going to elaborate on #1 in this blog post and I’ll do a follow-up post on #2. I watched through Greg Young’s video on the business benefits of CQRS + Event Sourcing and first let me say that I thought it was an excellent presentation that really drives home a lot of the benefits to this approach to architecture (I watched it twice in a row I enjoyed it so much!). But it didn’t answer some of my questions fully (I wish I had been there to ask these of Greg in person!). So let me pick apart some of the points he makes and how they relate to my first question above. I’m completely sold on the idea of event sourcing and have a clear understanding of the benefits that it brings to the table, so I’m not going to question that. But you can use event sourcing without going to a CQRS architecture, so my main question is around the benefits of CQRS + Event Sourcing vs Event Sourcing + Typical DDD architecture Architecture with Event Sourcing + Commands on Left, CQRS on Right Greg talks about how the stereotypical architecture doesn’t support DDD, but is that only because his diagram shows DTO’s coming up from the client. If we use the same diagram but allow the client to send commands doesn’t that remove a lot of the arguments that Greg makes against the stereotypical architecture? We can now introduce verbs into the system. We can capture intent now (storing it still requires event sourcing, but you can implement event sourcing without doing CQRS) We can create a rich domain model (as opposed to an anemic domain model) Scalability is obviously a benefit that CQRS brings to the table, but like Greg says, very few of the systems we create truly need significant scalability Greg talks about the ability to scale your development efforts. He says CQRS allows you to split the system into 3 parts (Client, Domain/Commands, Reads) and assign 3 teams of developers to work on them in parallel; letting you scale your development efforts by 3x with nearly linear gains. But in the stereotypical architecture don’t you already have 2 separate modules that you can split your dev efforts between: The client that sends commands/queries and receives DTO’s, and the Domain which accepts commands/queries, and generates events/DTO’s. If this is true it’s not really a 3x scaling you achieve with CQRS but merely a 1.5x scaling which while great doesn’t sound nearly as dramatic (“I can do it with 10 devs in 12 months – let me hire 5 more and we can have it done in 8 months”). Making the Query side “stupid simple” such that you can assign junior developers (or even outsource it) sounds like a valid benefit, but I have some concerns over what you do with complex query-based logic/behavior. I’m going to go into more detail on this in a follow-up blog post shortly. He also seemed to focus on how “stupid-simple” it is doing queries against the de-normalized data store, but I imagine there is still significant complexity in the event handlers that interpret the events and apply them to the de-normalized tables. It sounds like Greg suggests that because we’re doing CQRS that allows us to apply Event Sourcing when we otherwise wouldn’t be able to (~33:30 in the video). I don’t believe this is true. I don’t see why you wouldn’t be able to apply Event Sourcing without separating out the Commands and Queries. The queries would just operate against the domain model instead of the database. But you’d still get the benefits of Event Sourcing. Without CQRS the queries would only be able to operate against the current state rather than the event history, but even in CQRS the domain behaviors can only operate against the current state and I don’t see that being a big limiting factor. If some query needs to operate against something that is not captured by the current state you would just have to update the domain model to capture that information (no different than if that statement were made about a Command under CQRS). Some of the benefits I do see being applicable are that your domain model might end up being simpler/smaller since it only needs to represent the state needed to process commands and not worry about the reads (like the Deactivate Inventory Item and associated comment example that Greg provides). And also commands that can be handled in a Transaction Script style manner by the command handler simply generating events and not touching the domain model. It also makes it easier for your senior developers to focus on the command behavior and ignore the queries, which is usually going to be a better use of their time. And of course scalability. If anybody out there has any thoughts on this and can help educate me further, please either leave a comment or feel free to get in touch with me via email:

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Information Indepth Newsletter - Linux Edition

- by Paulo Folgado

INFORMATION INDEPTH NEWSLETTERLinux Edition February 2011 Stay Connected: NEWS Now Available: Oracle Linux 6 Get the latest release of Oracle Linux 6, which includes Unbreakable Enterprise Kernel.Download Oracle Linux 6 Read More Customers Succeed by Using Oracle Exadata with Oracle Linux Watch IT executives from Bank of America, Linkshare, and Johns Hopkins as they talk about the business challenges they faced and why they chose to use Oracle Linux along with Oracle Exadata as the solution. Watch Now Video Interview: Oracle Senior Vice President Wim Coekaerts Watch Wim Coekaerts, senior vice president, Linux and Virtualization Engineering, as he talks about use cases for Oracle VM Templates as well as the Unbreakable Enterprise Kernel for Linux.Watch Now Hot Off the Press: Migrate Your IBM AIX Environment to Oracle Linux This new white paper provides recommendations for planning and implementing the migration of applications from an IBM Power System running AIX to Oracle's Sun Fire X4800 Server with Intel Xeon 7560 Processor running Oracle Linux 5.5.Read More Back to Top BLOGOSPHERE Just Launched: The Oracle Linux Blog Follow our new Oracle Linux blog to hear the latest updates, product news, upcoming events, and all the latest happenings, directly from the Linux team at Oracle. Back to Top TECH DIVE NEW: Linux/Oracle Solaris CommandComparo Site from Oracle Technology NetworkThis site gives equivalent command syntax in Oracle Solaris 10 and Oracle Enterprise Linux 5 for common administrative tasks--focusing particularly on tasks that have tricky syntax or that you frequently need to double check. It acts as a quick reference for administrators who operate in these two OS environments. Free Download: Oracle Linux Release 5.6Did you know that by using Oracle Linux 5.5 or 5.6 along with the Unbreakable Enterprise Kernel, you can get all the benefits of Linux mainline kernel 2.6.32 and more, right now, without the need to reinstall or migrate to a new operating system such as RHEL6?Read Release NotesDownload Oracle Linux 5.6 LSB 4.0 Certification Completed for Oracle Linux 5.5Oracle Linux 5.5 with Unbreakable Enterprise Kernel successfully completed the LSB 4.0 certification. Back to Top WEBCASTS Boost Your Linux Performance with Oracle's Enhancements in Infiniband and RDSRegister to hear Director of Kernel Engineering Chris Mason cover scalability and performance improvements in Linux environment. Get the Facts Oracle's Unbreakable Enterprise KernelSVP Wim Coekaerts and Senior Director Monica Kumar cover the facts about and benefits of using Unbreakable Enterprise Kernel. View Other Webcasts on Demand Back to Top EVENTS Collaborate 2011April 10-14 Orlando, Florida Cloud Summit Events, WorldwideVarious dates (check the city for date/time of event) Datacenter Efficiency Events WorldwideThese events include Linux and Oracle VM sessions.Various dates (check the city for date/time of event) Virtualization Events in North America Find an Oracle Event Back to Top EDUCATION Get Oracle Linux Certified from Oracle University Oracle University offers courses in both Oracle Linux and the administration of Oracle Database on Linux. Back to Top CUSTOMER SPOTLIGHT Pella Corporation Improves IT Performance and Efficiency with Oracle Linux and Oracle VM To improve IT performance and efficiency and lower operational costs, Pella Corporation, has standardized on Oracle VM and Oracle Linux. Read More Disney Store Deploys POS in 330 Stores and 7 Countries on Oracle Linux Disney Store is running 1,500 registers worldwide on a broad Oracle technology software stack including Oracle Database 11g, Oracle Fusion Middleware, and Oracle Linux. Read More Back to Top PARTNER SPOTLIGHT Emulex and Oracle Announce Data Integrity Features The Unbreakable Enterprise Kernel provides data integrity checking between Oracle Database applications and Emulex 8Gb/s LightPulse Fibre Channel Host Bus Adapters. Read More Dell Inc. Dell Inc. tested and validated configurations support Oracle Linux. Back to Top STAY IN TOUCH Follow @ORCL_Linux on Twitter for the latest penguin tweets Bookmark Oracle.com/Linux Read the Oracle Linux blog Back to Top Oracle Information InDepth newsletters bring targeted news, articles, customer stories, and special offers to business people who want to find out how to streamline enterprise information management, measure results, improve business processes, and communicate a single truth to their constituents. Please send questions or comments to [email protected]. For answers to questions about subscribing, unsubscribing, and managing your Oracle e-mail communications preferences, please see the Oracle E-Mail Communications page. Copyright © 2011, Oracle Corporation and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. This document is provided for information purposes only, and the contents hereof are subject to change without notice. This document is not warranted to be error-free, nor is it subject to any other warranties or conditions, whether expressed orally or implied in law, including implied warranties and conditions of merchantability or fitness for a particular purpose. We specifically disclaim any liability with respect to this document, and no contractual obligations are formed either directly or indirectly by this document. This document may not be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without our prior written permission.

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Building a Distributed Commerce Infrastructure in the Cloud using Azure and Commerce Server

- by Lewis Benge

One of the biggest questions I routinely get asked is how scalable Commerce Server is. Of course the text book answer is the product has been around for 10 years, powers some of the largest e-Commerce websites in the world, so it scales horizontally extremely well. One argument however though is what if you can't predict the growth of demand required of your Commerce Platform, or need the ability to scale up during busy seasons such as Christmas for a retail environment but are hesitant on maintaining the infrastructure on a year-round basis? The obvious answer is to utilise the many elasticated cloud infrastructure providers that are establishing themselves in the ever-growing market, the problem however is Commerce Server is still product which has a legacy tightly coupled dependency on Windows and IIS components. Commerce Server 2009 codename "R2" however introduced to the concept of an n-tier deployment of Microsoft Commerce Server, meaning you are no longer tied to core objects API but instead have serializable Commerce Entity objects, and business logic allowing for Commerce Server to now be built into a WCF-based SOA architecture. Presentation layers no-longer now need to remain on the same physical machine as the application server, meaning you can now build the user experience into multiple-technologies and host them in multiple places – leveraging the transport benefits that a WCF service may bring, such as message queuing, security, and multiple end-points. All of this logic will still need to remain in your internal infrastructure, for two reasons. Firstly cloud based computing infrastructure does not support PCI security requirements, and secondly even though many of the legacy Commerce Server dependencies have been abstracted away within this version of the application, it is still not a fully supported to be deployed exclusively into the cloud. If you do wish to benefit from the scalability of the cloud however, you can still achieve a great Commerce Server and Azure setup by utilising both the Azure App Fabric in terms of the service bus, and authentication services and Windows Azure to host any online presence you may require. The architecture would be something similar to this: This setup would allow you to construct your Commerce Services as part of your on-site infrastructure. These services would contain all of the channels custom business logic, and provide the overall interface back into the underlying Commerce Server components. It would be recommended that services are constructed around the specific business domain of the application, which based on your business model would usually consist of separate services around Catalogue, Orders, Search, Profiles, and Marketing. The App Fabric service bus is then used to abstract and aggregate further the services, making them available to the cloud and subsequently secured by App Fabrics authentication services. These services are now available for consumption by any client, using any supported technology – not just .NET. Thus meaning you are now able to construct apps for IPhone, integrate with Java based POS Devices, and any many other potential uses. This aggregation is useful, and forms the basis of the further strategy around diversifying and enhancing the e-Commerce experience, but also provides the foundation for the scalability we want to gain from utilising a cloud-based application platform. The Windows Azure application platform is Microsoft solution to benefiting from the true economies of scale in terms of the elasticity of the cloud. Just before the launch of the Azure Platform – Domino's pizza actually managed to run their whole SuperBowl operation from the scalability of Windows Azure, and simply switching back to their traditional operation the next day with no residual infrastructure costs. The platform also natively can subscribe to services and messages exposed within the AppFabric service bus, making it an ideal solution to build and deploy a presentation layer which will need to support of scalable infrastructure – such as a high demand public facing e-Commerce portal, or a promotion element of a brand. Windows Azure has excellent support for ASP.NET, including its own caching providers meaning expensive operations such as catalogue queries can persist in memory on the application server, reducing the demand on internal infrastructure and prioritising it for more business critical operations such as receiving orders and processing payments. Windows Azure also supports other languages too, meaning utilising this approach you can technically build a Commerce Server presentation layer in Java, PHP, or Ruby – or equally in ASP.NET or Silverlight without having to change any of the underlying business or Commerce Server implementation. This SOA-style architecture is one of the primary differentiators for Commerce Server as a product in the e-Commerce market, and now with the introduction of a WCF capability in Commerce Server 2009/2009 R2 the opportunities for extensibility of the both the user experience, and integration into third parties, are drastically increased, all with no effect to the underlying channel logic. So if you are looking at deployment options for your e-Commerce application to help support demand in a cost effective way. I would highly recommend you consider looking at Windows Azure, and if you have any questions in-particular about this style of deployment, please feel free to get in touch!

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Building the Elusive Windows Phone Panorama Control

When the Windows Phone 7 Developer SDK was released a couple of weeks ago at MIX10 many people noticed the SDK doesnt include a template for a Panorama control. Here at Clarity we decided to build our own Panorama control for use in some of our prototypes and I figured I would share what we came up with. There have been a couple of implementations of the Panorama control making their way through the interwebs, but I didnt think any of them really nailed the experience that is shown in the simulation videos. One of the key design principals in the UX Guide for Windows Phone 7 is the use of motion. The WP7 OS is fairly stripped of extraneous design elements and makes heavy use of typography and motion to give users the necessary visual cues. Subtle animations and wide layouts help give the user a sense of fluidity and consistency across the phone experience. When building the panorama control I was fairly meticulous in recreating the motion as shown in the videos. The effect that is shown in the application hubs of the phone is known as a Parallax Scrolling effect. This this pseudo-3D technique has been around in the computer graphics world for quite some time. In essence, the background images move slower than foreground images, creating an illusion of depth in 2D. Here is an example of the traditional use: http://www.mauriciostudio.com/. One of the animation gems I've learned while building interactive software is the follow animation. The premise is straightforward: instead of translating content 1:1 with the interaction point, let the content catch up to the mouse or finger. The difference is subtle, but the impact on the smoothness of the interaction is huge. That said, it became the foundation of how I achieved the effect shown below. Source Code Available HERE Before I briefly describe the approach I took in creating this control..and Ill add some **asterisks ** to the code below as my coding skills arent up to snuff with the rest of my colleagues. This code is meant to be an interpretation of the WP7 panorama control and is not intended to be used in a production application. 1. Layout the XAML The UI consists of three main components : The background image, the Title, and the Content. You can imagine each these UI Elements existing on their own plane with a corresponding Translate Transform to create the Parallax effect. 2. Storyboards + Procedural Animations = Sexy As I mentioned above, creating a fluid experience was at the top of my priorities while building this control. To recreate the smooth scroll effect shown in the video we need to add some place holder storyboards that we can manipulate in code to simulate the inertia and snapping. Using the easing functions built into Silverlight helps create a very pleasant interaction. 3. Handle the Manipulation Events With Silverlight 3 we have some new touch event handlers. The new Manipulation events makes handling the interactivity pretty straight forward. There are two event handlers that need to be hooked up to enable the dragging and motion effects: the ManipulationDelta event : (the most relevant code is highlighted in pink) Here we are doing some simple math with the Manipulation Deltas and setting the TO values of the animations appropriately. Modifying the storyboards dynamically in code helps to create a natural feel.something that cant easily be done with storyboards alone. And secondly, the ManipulationCompleted event: Here we take the Final Velocities from the Manipulation Completed Event and apply them to the Storyboards to create the snapping and scrolling effects. Most of this code is determining what the next position of the viewport will be. The interesting part (shown in pink) is determining the duration of the animation based on the calculated velocity of the flick gesture. By using velocity as a variable in determining the duration of the animation we can produce a slow animation for a soft flick and a fast animation for a strong flick. Challenges to the Reader There are a couple of things I didnt have time to implement into this control. And I would love to see other WPF/Silverlight approaches. 1. A good mechanism for deciphering when the user is manipulating the content within the panorama control and the panorama itself. In other words, being able to accurately determine what is a flick and what is click. 2. Dynamically Sizing the panorama control based on the width of its content. Right now each control panel is 400px, ideally the Panel items would be measured and then panorama control would update its size accordingly. 3. Background and content wrapping. The WP7 UX guidelines specify that the content and background should wrap at the end of the list. In my code I restrict the drag at the ends of the list (like the iPhone). It would be interesting to see how this would effect the scroll experience. Well, Its been fun building this control and if you use it Id love to know what you think. You can download the Source HERE or from the Expression Gallery Erik Klimczak | [email protected] | twitter.com/eklimczDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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The Year 2010, The Year of Change

As I look back on the year of 2010, I could have never predicted the wonderful changes that have occurred for my wife and me. The beginning of this year started out as the 9th year that we lived in South Florida, and my fourth year working for DentalPlans.com as a software engineer/network admin. About 3 months in to the year I was given an excellent opportunity to work for MovieTickets.com in the software engineering department. This opportunity allowed me to gain experience with jQuery due to one of my projects was to reengineering MovieTickets.com existing Marketing Panel System. About 3 months after working at MovieTickets.com, my wife and I were offered an opportunity of a life time. I was offered a Job in a large background\information security company located in Nashville, TN as software engineer II. I must note that after living in South Florida for 9 years, my wife and I really had a strong distaste for the South Florida life style and the general attitude/culture of the area. Even though we shared a strong dislike for the area in which we lived I must admit that it was a tough decision to leave MovieTickets.com because I was really doing well and I made some great new friends like Chris Catto, and Tyson Nero. In fact, they introduced me to Local Microsoft User Groups, and software development podcast like DotNetRocks.com and Hanselminutes.com. In addition, we also went to my first Microsoft launch down in Miami for Visual Studios 2010. I must admit it was a cool experience. I truly hope to keep in touch with them to see how their careers grow, and I know they will. I must admit I was nervous and excited to start the next chapter in our live as I started up the 26 foot U-Haul truck and got on the road for Nashville from Boca Raton. I knew that the change was going to lead to new adventures and new opportunities that I could never imagine. As we pulled in to the long driveway of our rental house, we knew that this was the right place for my wife and I. Natalie, my wife had actually come up to Nashville and within one week of my job offer had set up a nice rental home for us to restart our lives in TN. I must admit that the wonderful southern hospitality took a bit to get use to due to the type of people we were used to dealing with on a regular basis. Our first 2 months seemed like we were living a dream because of our new area and the wonderful people we live around. So far my new job is going really well and I really like the people on my team and department. In fact after 6 months I am now in charge of all application builds for our new deployment process. I am also leading up a push for setting up of continuous integration within our new build process. In addition to starting my new job, I was also offered a position as an adjust instructor at ITT Tech teaching course like VB.net, Java Script, Ajax, and database development. So far I have really like teaching at the college level. Information technology has really been great for my life so I am really glad to be able to give back. That is actually why I started DotNetBlocks. This site allows me to document things I have learned as I work with technology, and allows others to borrow from my experiences. I hope that this site can help others as others have helped me get where I am. Finally, I am glade to report that I only have 4 classes left for my master’s degree at Capella University. I am proud to announce that I am still on track to graduate with 3.91 GPA. This last class was really a test because I had a crazy idea that I could work full time as a software engineer, teach two college courses as a first time teacher and also take an advanced masters class in application architecture. I have no idea how I actually survived, but I am really surprised how well I actually did. I was invited back to reach again at ITT Tech, and I passed my masters class with an “A”. I have decided to take this next term off from my master’s program so that I do not get burned out. Also, so that my new current employer will pay for more of my education, tuition reimbursement is an awesome benefit. This was my year 2010, how was yours?

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CQRS - Benefits

- by Dylan Smith

Thanks to all the comments and feedback from the last post I think I have a better understanding now of the benefits of CQRS (separate from the benefits of Event Sourcing). I’m going to try and sum it up here, and point out some areas where I could still use some advice: CQRS Benefits Sounds like the primary benefit of CQRS as an architecture is it allows you to create a simpler domain model by sucking out everything related to queries. I can definitely see the benefit to this, in general the domain logic related to commands is the high-value behavior in the software, but the logic required to service the queries would add a lot of low-value “noise” to the domain model that would dilute the high-value (command) behavior – sorting, paging, filtering, pre-fetch paths, etc. Also the most appropriate domain structure for implementing commands might not be the most optimal for implementing queries. To paraphrase Greg, this usually results in a domain model that is mediocre at both, piss-poor at one, or more likely piss-poor at both commands and queries. Not only will you be able to simplify your domain model by pulling out all the query logic, but at least a handful of commands in most systems will probably be “pass-though” type commands with little to no logic that just generate events. If these can be implemented directly in the command-handler and never touch the domain model, this allows you to slim down the domain model even more. Also, if you were to do event sourcing without CQRS, you no longer have a database containing the current state (only the domain model would) which makes it difficult (or impossible) to support ad-hoc querying and/or reporting that is common in most business software. Of course CQRS provides some great scalability benefits, not only scalability but I have to assume that it provides extremely low latency for most operations, especially if you have an asynchronous event bus. I know Greg says that you get a 3x scaling (Commands, Queries, Client) of your ability to perform parallel development, but IMHO, it seems like it only provides 1.5x scaling since even without CQRS you’re going to have your client loosely coupled to your domain - which is still a great benefit to be able to realize. Questions / Concerns If all the queries against an aggregate get pulled out to the Query layer, what if the only commands for that aggregate can be handled in a “pass-through” manner with the command handler directly generating events. Is it possible to have an aggregate that isn’t modeled in the domain model? Are there any issues or downsides to this? I know in the feedback from my previous posts it was suggested that having one domain model handling both commands and queries requires implementing a lot of traversals between objects that wouldn’t be necessary if it was only servicing commands. My question is, do you include traversals in your domain model based on the needs of the code, or based on the conceptual domain model? If none of my Commands require a Customer.Orders traversal, but the conceptual domain includes the concept of a set of orders belonging to a customer – should I model that in my domain model or not? I like the idea of using the Query side of the architecture as a place to put junior devs where the risk of them screwing something up has minimal impact. But I’m not sold on the idea that you can actually outsource it. Like I said in one of my comments on my previous post, the code to handle a query and generate DTO’s is going to be dead simple, but the code to process events and apply them to the tables on the query side is going to require a significant amount of domain knowledge to know which events to listen for to update each of the de-normalized tables (and what changes need to be made when each event is processed). I don’t know about everybody else, but having Indian/Russian/whatever outsourced developers have to do anything that requires significant domain knowledge has never been successful in my experience. And if you need to spec out for each new query which events to listen to and what to do with each one, well that’s probably going to be just as much work to document as it would be to just implement it. Greg made the point in a comment that doing an aggregate query like “Total Sales By Customer” is going to be inefficient if you use event sourcing but not CQRS. I don’t understand why that would be the case. I imagine in that case you’d simply have a method/property on the Customer object that calculated total sales for that customer by enumerating over the Orders collection. Then the application services layer would generate DTO’s off of the Customers collection that included say the CustomerID, CustomerName, TotalSales, or whatever the case may be. As long as you use a snapshotting implementation, I don’t see why that would be anymore inefficient in a DDD+Event Sourcing implementation than in a typical DDD implementation. Like I mentioned in my last post I still have some questions about query logic that haven’t been answered yet, but before I start asking those I want to make sure I have a strong grasp on what benefits CQRS provides. My main concern with the query logic was that I know I could just toss it all into the query side, but I was concerned that I would be losing the benefits of using CQRS in the first place if I did that. I want to elaborate more on this though with some example situations in an upcoming post.

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PASS Summit 2010 Recap

- by AjarnMark

Last week I attended my eighth PASS Summit in nine years, and every year it is a fantastic event! I was fortunate my first year to have a contact (Bill Graziano (blog | Twitter) from SQLTeam) that I was expecting to meet, and who got me started on a good track of making new contacts. Each year I have made a few more, and renewed friendships from years past. Many of the attendees agree that the pure networking opportunities are one of the best benefits of attending the Summit. And there’s a lot of great technical stuff, too, some of the things that stick out for me this year include… Pre-Con Monday: PowerShell with Allen White (blog | Twitter). This was the first time that I attended a pre-con. For those not familiar with the concept, the regular sessions for the conference are 75-90 minutes long. For an extra fee, you can attend a full-day session on a single topic during a pre- or post-conference training day. I had been meaning for several months to dive in and learn PowerShell, but just never seemed to find (or make) the time for it, so when I saw this was one of the all-day sessions, and I was planning to be there on Monday anyway, I decided to go for it. And it was well worth it! I definitely came out of there with a good foundation to build my own PowerShell scripts, plus several sample scripts that he showed which already cover the first four or five things I was planning to do with PowerShell anyway. This looks like the right tool for me to build an automated version of our software deployment process, which right now contains many repeated steps. Thanks Allen! Service Broker with Denny Cherry (blog | Twitter). I remembered reading Denny’s blog post on Using Service Broker instead of Replication, and ever since then I have been thinking about using this to populate a new reporting-focused Data Repository that we will be building in the near future. When I saw he was doing this session, I thought it would be great to get more information and be able to ask the author questions. When I brought this idea back to my boss, he really liked it, as we had previously been discussing doing nightly data loads, with an option to manually trigger a mid-day load if up-to-the-minute data was needed for something. If we go the Service Broker route, we can keep the Repository current in near real-time. Hooray! DBA Mythbusters with Paul Randal (blog | Twitter). Even though I read every one of the posts in Paul’s blog series of the same name, I had to go see the legend in person. It was great, and I still learned something new! How to Conduct Effective Meetings with Joe Webb (blog | Twitter). I always like to sit in on a session that Joe does. I met Joe several years ago when both he and Bill Graziano were on the PASS Board of Directors together, and we have kept in touch. Joe is very well-spoken and has great experience with both SQL Server and business. And we could certainly use some pointers at my work (probably yours, too) on making our meetings more effective and to run on-time. Of course, now that I’m the Chapter Leader for the Professional Development virtual chapter, I also had to sit in on this ProfDev session and recruit Joe to do a presentation or two for the chapter next year. Query Optimization with David DeWitt. Anyone who has seen Dr. David DeWitt present the 3rd keynote at a PASS Summit over the last three years knows what a great time it is to sit and listen to him make some really complicated and advanced topic easy to understand (although it still makes your head hurt). It still amazes me that the simple two-table join query from pubs that he used in his example can possibly have 22 million possible physical query plans. Ouch! Exhibit Hall: This year I spent more serious time in the exhibit hall than any year past. I have talked my boss into making a significant (for us) investment in monitoring tools next year, and this was a great opportunity to talk with all the big-hitters. Readers of mine may recall that I fell in love with the SQL Sentry Power Suite several months ago and wrote a blog entry about it just from the trial version. Well as things turned out, short-term budget priorities shifted, and we weren’t able to make the purchase then. I have it in the budget for next year, but since I was going to the Summit, my boss wanted me to look at the other options to see if this was really the one that we wanted. I spent a couple of hours talking with representatives from Red-Gate, Idera, Confio, and Quest about their offerings, and giving them each the same 3 scenarios that I wanted to be able to accomplish based on the questions and issues that arise in our company. It was interesting to discover the different approaches or “world view” that each vendor takes to the subject of performance monitoring and troubleshooting. I may write a separate article that goes into this in more depth, but the product that best aligned with our point of view, and met the current needs we have is still the SQL Sentry Power Suite. I’m not saying that the others are bad or wrong or anything like that, just that the way they tackled the issue did not align as well with our particular needs as does SQL Sentry’s product. And that was something I learned too, when you go shopping for these products, you really need to know what you want to get from them. It’s best if you have a few example scenarios from work that you can use to test out how well each tool fits your particular needs. Overall, another GREAT event. I can’t wait to get the DVDs so I can sit in on a bunch of other sessions that I couldn’t get to because I was in one of the ones above. And I can hardly wait until next year!

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JavaOne Afterglow by Simon Ritter

- by JuergenKress

Last week was the eighteenth JavaOne conference and I thought it would be a good idea to write up my thoughts about how things went. Firstly thanks to Yoshio Terada for the photos, I didn't bother bringing a camera with me so it's good to have some pictures to add to the words. Things kicked off full-throttle on Sunday. We had the Java Champions and JUG leaders breakfast, which was a great way to meet up with a lot of familiar faces and start talking all things Java. At midday the show really started with the Strategy and Technical Keynotes. This was always going to be tougher job than some years because there was no big shiny ball to reveal to the audience. With the Java EE 7 spec being finalised a few months ago and Java SE 8, Java ME 8 and JDK8 not due until the start of next year there was not going to be any big announcement. I thought both keynotes worked really well each focusing on the things most important to Java developers: Strategy One of the things that is becoming more and more prominent in many companies marketing is the Internet of Things (IoT). We've moved from the conventional desktop/laptop environment to much more mobile connected computing with smart phones and tablets. The next wave of the internet is not just billions of people connected, but 10s or 100s of billions of devices connected to the network, all generating data and providing much more precise control of almost any process you can imagine. This ties into the ideas of Big Data and Cloud Computing, but implementation is certainly not without its challenges. As Peter Utzschneider explained it's about three Vs: Volume, Velocity and Value. All these devices will create huge volumes of data at very high speed; to avoid being overloaded these devices will need some sort of processing capabilities that can filter the useful data from the redundant. The raw data then needs to be turned into useful information that has value. To make this happen will require applications on devices, at gateways and on the back-end servers, all very tightly integrated. This is where Java plays a pivotal role, write once, run everywhere becomes essential, having nine million developers fluent in the language makes it the defacto lingua franca of IoT. There will be lots more information on how this will become a reality, so watch this space. Technical How do we make the IoT a reality, technically? Using the game of chess Mark Reinhold, with the help of people like John Ceccarelli, Jasper Potts and Richard Bair, showed what you could do. Using Java EE on the back end, Java SE and JavaFX on the desktop and Java ME Embedded and JavaFX on devices they showed a complete end-to-end demo. This was really impressive, using 3D features from JavaFX 8 (that's included with JDK8) to make a 3D animated Duke chess board. Jasper also unveiled the "DukePad" a home made tablet using a Raspberry Pi, touch screen and accelerometer. Although the Raspberry Pi doesn't have earth shattering CPU performance (about the same level as a mid 1990s Pentium), it does have really quite good GPU performance so the GUI works really well. The plans are all open sourced and available here. One small, but very significant announcement was that Java SE will now be included with the NOOB and Raspbian Linux distros provided by the Raspberry Pi foundation (these can be found here). No more hassle having to download and install the JDK after you've flashed your SD card OS image. The finale was the Raspberry Pi powered chess playing robot. Really very, very cool. I talked to Jasper about this and he told me each of the chess pieces had been 3D printed and then he had to use acetone to give them a glossy finish (not sure what his wife thought of him spending hours in the kitchen in a gas mask!) The way the robot arm worked was very impressive as it did not have any positioning data (like a potentiometer connected to each motor), but relied purely on carefully calibrated timings to get the arm to the right place. Having done things like this myself in the past I know how easy it is to find a small error gets magnified into very big mistakes. Here's some pictures from the keynote: The "Dukepad" architecture Nice clear perspex case so you can see the innards. The very nice 3D chess set. Maya's obviously a great tool. Read the full article here. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Simon Ritter,Java One,OOW,Oracle OpenWorld,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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Spolskism or Twitterism: A Doctor writes...

- by Phil Factor

"I never realized I had a problem. I just 'twittered' because it was a social thing to do. All my mates were doing it. It made me feel good to have 'followers'; it bolstered my self-esteem. Of course, you don't think of the long-term effects on your work and on the way you think. There's no denying that it impairs your judgment…" Yes, this story is typical. Hundreds of people are waking up to the long term effects of twittering, and seeking help. Dave, who wishes to remain anonymous, told our reporter… "I started using Twitter at work. Just a few minutes now and then, throughout the day. A lot of my colleagues were doing it and I thought 'Well, that's cool; it must be part of what I should be doing at work'. Soon, I was avidly reading every twitter that came my way, and counting the minutes between my own twitters. I tried to kid myself that it was all about professional development and getting other people to help you with work-related problems, but in truth I had become addicted to the buzz of the social network. The worse thing was that it made me seem busy even when I was really just frittering my time away. Inevitably, I started to get behind with my real work." Experts have identified the syndrome and given it a name: 'Twitterism', sometimes referred to as 'Spolskism', after the person who first drew attention to the pernicious damage to well-being that the practice caused, and who had the courage to take the pledge of rejecting it. According to one expert… "The occasional Twitter does little harm to the participant, and can be an adaptive way of dealing with stress. Unfortunately, it rarely stops there. The addictive qualities of the practice have put a strain on the caring professions who are faced with a flood of people making that first bold step to seeking help". Dave is one of those now seeking help for his addiction… "I had lost touch with reality. Even though I twittered my work colleagues constantly, I found I actually spoke to them less and less. Even when out socializing, I would frequently disengage from the conversation, in order to twitter. I stopped blogging. I stopped responding to emails; the only way to reach me was through the world of Twitter. Unfortunately, my denial about the harm that twittering was doing to me, my friends, and my work-colleagues was so strong that I truly couldn't see that I had a problem." Like other addictions, the help and support of others who are 'taking the cure' is important. There is a common bond between those who have 'been through hell and back' and are once more able to experience the joys of actually conversing and socializing, rather than the false comfort of solitary 'twittering'. Complete abstinence is essential to the cure. Most of those who risk even an occasional twitter face a headlong slide back into 'binge' twittering. Tom, another twitterer who has managed to kick the habit explains… "My twittering addiction now seems more like a bad dream. You get to work, and switch on the PC. You say to yourself, just open up the browser, just for a minute, just to see what people are saying on Twitter. The next thing you know, half the day has gone by. The worst thing is that when you're addicted, you get good at covering up the habit; I spent so much time looking at the screen and typing on the keyboard, people just assumed I was working hard.I know that I must never forget what it was like then, and what it's like now that I've kicked the habit. I now have more time for productive work and a real social life." Like many addictions, Spolskism has its most detrimental effects on family, friends and workmates, rather than the addict. So often nowadays, we hear the sad stories of Twitter-Widows; tales of long lonely evenings spent whilst their partners are engrossed in their twittering into their 'mobiles' or indulging in their solitary spolskistic habits in privacy, under cover of 'having to do work at home'. Workmates suffer too, when the addicts even take their laptops or mobiles into meetings in order to 'twitter' with their fellow obsessives, even stooping to complain to their followers how boring the meeting is. No; The best advice is to leave twittering to the birds. You know it makes sense.

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Oracle’s Web Experience Management

- by Christie Flanagan

Today’s guest post on Oracle’s Web Experience Management comes from a member of our WebCenter Evangelist team, Noël Jaffré, a Principal Technologist based in France.Oracle’s Web Experience Management (WEM) solution enables organizations to optimize the online channel for driving marketing and customer experience management success. It empowers business users to manage the web presence and create rich and engaging online experiences for customers and prospects. Oracle's WEM platform provides a framework to simplify the integration of Oracle, third-party and custom-built applications. This framework essentially allows the creation and integration of applications using one single business interface called the WEM interface. It includes the following: Single sign-on access control for all integrated applications using the Central Authentication Service (CAS) component. A single centralized administration window for user, role, and native applications management including site management. Community server management, gadget server management as well as management for partner integrated technologies. A Representational State Transfer (REST) API for accessing WebCenter Sites data. REST services are supported on both Oracle WebCenter Sites and Oracle WebCenter Sites Satellite Server to leverage the satellite server cache. All REST requests are cached for web consuming applications as well for the high performance delivery of native applications on the mobile channel. Oracle WebCenter Sites’ Web Experience Management environment enables organizations to deliver a compelling online experience to customers by simplifying the deployment and management of sophisticated and engaging websites. The WebCenter Sites platform automates the entire process of managing web content including: Authoring: Business users can easily contribute and manage web content in real-time, with intuitive interfaces and drag-and-drop content authoring and layout capabilities designed for the non-technical user. Contextual Content Targeting: Marketers are empowered to create and manage targeted campaigns with relevant recommendations and promotions based on the context of the session of the visitor such as his or her navigation history, user profile, language, location or other information shared during the visitor session. Content Publishing and Deployment: It offers advanced multi-site management capabilities for departmental or regional sites, as well as strong multi-lingual and multi-locale content management. The remote satellite server caching infrastructure provides high-performance, distributed caching, tuned to deliver high-volume, targeted and multi-lingual sites. Analytics and Optimization: Business users and marketers have the ability to measure the effectiveness of their online content and campaigns at a granular level. Editors and marketers can immediately determine whether a given article or promotion is relevant to a particular customer segment. User-generated Content: Marketers can enable blogs, comments, rating and reviews on the website. All comments and reviews posted to the website can be moderated from the administrator interface either manually or automatically using filters, whitelists, blacklists or community based moderation. Personalized Gadget Dashboards: Site managers can deploy gadgets, small applications using web content, individually or as part of dashboards containing multiple gadgets. These gadget dashboards enable site visitors to create their own “MyPage” on a given site where they can select and customize the gadgets that the site administrator has made available. Any gadget that conforms to the iGoogle/OpenSocial standard can be made available to site visitors, or they can be created within the WEM interface. Oracle's WEM platform also provides a unique environment for the delivery of a rich, multichannel online experience for site visitors through its advanced management modules for mobile. With Oracle’s WEM solution, it’s easy to control branding and deliver a consistent message while repurposing web content for publication to mobile devices, kiosks and much more. This distinctive approach provides: HTML5 Delivery: HTML5 delivery which includes native support for adaptive design that responds to the user’s computer screen resolution and orientation. The approach is less driven by the particular hardware and more driven by the user’s interactions with the device. In other words, this approach takes both the screen interactions (either cursor or touch) and screen sizes and orientation into consideration. A Unique Native Mobile Extension Environment for Contributors: From the WEM interface, a contributor can directly manage their mobile channel, using the tooling already in place for driving the traditional web presence. This includes the mobile presentation, as well as mobile insite editing, drag and drop page layout, and in-context recommendations and personalization. Optimized REST APIs for High Performance Content Delivery on Native Mobile Device Applications: WebCenter Sites’ REST API uses the underlying HTTP methods (GET, POST, PUT, DELETE) to interact with resources. Resources support two types of input and output formats -- XML and JSON. REST calls are customizable to optimize the interactions between the content repositories and the client applications. Caching is essential to decrease network loads and improve overall reliability and usability of the applications and user interactions. REST results are cached through the highly efficient Oracle WebCenter Sites caching architecture.

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SQL SERVER – Replace a Column Name in Multiple Stored Procedure all together

- by pinaldave

I receive a lot of emails every day. I try to answer each and every email and comments on Facebook and Twitter. I prefer communication on social media as this gives opportunities to others to read the questions and participate along with me. There is always some question which everyone likes to read and remember. Here is one of the questions which I received in email. I believe the same question will be there any many developers who are beginning with SQL Server. I decided to blog about it so everyone can read it and participate. “I am beginner in SQL Server. I have a very interesting situation and need your help. I am beginner to SQL Server and that is why I do not have access to the production server and I work entirely on the development server. The project I am working on is also in the infant stage as well. In product I had to create a multiple tables and every table had few columns. Later on I have written Stored Procedures using those tables. During a code review my manager has requested to change one of the column which I have used in the table. As per him the naming convention was not accurate. Now changing the columname in the table is not a big issue. I figured out that I can do it very quickly either using T-SQL script or SQL Server Management Studio. The real problem is that I have used this column in nearly 50+ stored procedure. This looks like a very mechanical task. I believe I can go and change it in nearly 50+ stored procedure but is there a better solution I can use. Someone suggested that I should just go ahead and find the text in system table and update it there. Is that safe solution? If not, what is your solution. In simple words, How to replace a column name in multiple stored procedure efficiently and quickly? Please help me here with keeping my experience and non-production server in mind.” Well, I found this question very interesting. Honestly I would have preferred if this question was asked on my social media handles (Facebook and Twitter) as I am very active there and quite often before I reach there other experts have already answered this question. Anyway I am now answering the same question on the blog so all of us can participate here and come up with an appropriate answer. Here is my answer - “My Friend, I do not advice to touch system table. Please do not go that route. It can be dangerous and not appropriate. The issue which you faced today is what I used to face in early career as well I still face it often. There are two sets of argument I have observed – there are people who see no value in the name of the object and name objects like obj1, obj2 etc. There are sets of people who carefully chose the name of the object where object name is self-explanatory and almost tells a story. I am not here to take any side in this blog post – so let me go to a quick solution for your problem. Note: Following should not be directly practiced on Production Server. It should be properly tested on development server and once it is validated they should be pushed to your production server with your existing deployment practice. The answer is here assuming you have regular stored procedures and you are working on the Development NON Production Server. Go to Server Note >> Databases >> DatabaseName >> Programmability >> Stored Procedure Now make sure that Object Explorer Details are open (if not open it by clicking F7). You will see the list of all the stored procedures there. Now you will see a list of all the stored procedures on the right side list. Select either all of them or the one which you believe are relevant to your query. Now… Right click on the stored procedures >> SELECT DROP and CREATE to >> Now select New Query Editor Window or Clipboard. Paste the complete script to a new window if you have selected Clipboard option. Now press Control+H which will bring up the Find and Replace Screen. In this screen insert the column to be replaced in the “Find What”box and new column name into “Replace With” box. Now execute the whole script. As we have selected DROP and CREATE to, it will created drop the old procedure and create the new one. Another method would do all the same procedure but instead of DROP and CREATE manually replace the CREATE word with ALTER world. There is a small advantage in doing this is that if due to any reason the error comes up which prevents the new stored procedure to be created you will have your old stored procedure in the system as it is. “ Well, this was my answer to the question which I have received. Do you see any other workaround or solution? Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Server Management Studio, SQL Stored Procedure, SQL Tips and Tricks, T SQL, Technology

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Liskov Substitution Principle and the Oft Forgot Third Wheel

- by Stacy Vicknair

Liskov Substitution Principle (LSP) is a principle of object oriented programming that many might be familiar with from the SOLID principles mnemonic from Uncle Bob Martin. The principle highlights the relationship between a type and its subtypes, and, according to Wikipedia, is defined by Barbara Liskov and Jeanette Wing as the following principle: Let be a property provable about objects of type . Then should be provable for objects of type where is a subtype of . Rectangles gonna rectangulate The iconic example of this principle is illustrated with the relationship between a rectangle and a square. Let’s say we have a class named Rectangle that had a property to set width and a property to set its height. 1: Public Class Rectangle 2: Overridable Property Width As Integer 3: Overridable Property Height As Integer 4: End Class We all at some point here that inheritance mocks an “IS A” relationship, and by gosh we all know square IS A rectangle. So let’s make a square class that inherits from rectangle. However, squares do maintain the same length on every side, so let’s override and add that behavior. 1: Public Class Square 2: Inherits Rectangle 3: 4: Private _sideLength As Integer 5: 6: Public Overrides Property Width As Integer 7: Get 8: Return _sideLength 9: End Get 10: Set(value As Integer) 11: _sideLength = value 12: End Set 13: End Property 14: 15: Public Overrides Property Height As Integer 16: Get 17: Return _sideLength 18: End Get 19: Set(value As Integer) 20: _sideLength = value 21: End Set 22: End Property 23: End Class Now, say we had the following test: 1: Public Sub SetHeight_DoesNotAffectWidth(rectangle As Rectangle) 2: 'arrange 3: Dim expectedWidth = 4 4: rectangle.Width = 4 5: 6: 'act 7: rectangle.Height = 7 8: 9: 'assert 10: Assert.AreEqual(expectedWidth, rectangle.Width) 11: End Sub If we pass in a rectangle, this test passes just fine. What if we pass in a square? This is where we see the violation of Liskov’s Principle! A square might "IS A” to a rectangle, but we have differing expectations on how a rectangle should function than how a square should! Great expectations Here’s where we pat ourselves on the back and take a victory lap around the office and tell everyone about how we understand LSP like a boss. And all is good… until we start trying to apply it to our work. If I can’t even change functionality on a simple setter without breaking the expectations on a parent class, what can I do with subtyping? Did Liskov just tell me to never touch subtyping again? The short answer: NO, SHE DIDN’T. When I first learned LSP, and from those I’ve talked with as well, I overlooked a very important but not appropriately stressed quality of the principle: our expectations. Our inclination is to want a logical catch-all, where we can easily apply this principle and wipe our hands, drop the mic and exit stage left. That’s not the case because in every different programming scenario, our expectations of the parent class or type will be different. We have to set reasonable expectations on the behaviors that we expect out of the parent, then make sure that those expectations are met by the child. Any expectations not explicitly expected of the parent aren’t expected of the child either, and don’t register as a violation of LSP that prevents implementation. You can see the flexibility mentioned in the Wikipedia article itself: A typical example that violates LSP is a Square class that derives from a Rectangle class, assuming getter and setter methods exist for both width and height. The Square class always assumes that the width is equal with the height. If a Square object is used in a context where a Rectangle is expected, unexpected behavior may occur because the dimensions of a Square cannot (or rather should not) be modified independently. This problem cannot be easily fixed: if we can modify the setter methods in the Square class so that they preserve the Square invariant (i.e., keep the dimensions equal), then these methods will weaken (violate) the postconditions for the Rectangle setters, which state that dimensions can be modified independently. Violations of LSP, like this one, may or may not be a problem in practice, depending on the postconditions or invariants that are actually expected by the code that uses classes violating LSP. Mutability is a key issue here. If Square and Rectangle had only getter methods (i.e., they were immutable objects), then no violation of LSP could occur. What this means is that the above situation with a rectangle and a square can be acceptable if we do not have the expectation for width to leave height unaffected, or vice-versa, in our application. Conclusion – the oft forgot third wheel Liskov Substitution Principle is meant to act as a guidance and warn us against unexpected behaviors. Objects can be stateful and as a result we can end up with unexpected situations if we don’t code carefully. Specifically when subclassing, make sure that the subclass meets the expectations held to its parent. Don’t let LSP think you cannot deviate from the behaviors of the parent, but understand that LSP is meant to highlight the importance of not only the parent and the child class, but also of the expectations WE set for the parent class and the necessity of meeting those expectations in order to help prevent sticky situations. Code examples, in both VB and C# Technorati Tags: LSV,Liskov Substitution Principle,Uncle Bob,Robert Martin,Barbara Liskov,Liskov

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