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• OTN Developer Days - Calgary, Alberta March 18 & Atlanta, GA April 1

  - by dana.singleterry

  Discover a Faster Way to Develop Ajax -Enabled Application Based on Java and SOA Standards Get Hands-on with Oracle Jdeveloper, Oracle Application Developer Framework and Oracle Fusion Middleware 11g. You are invited to attend Oracle Technology Network (OTN) Developer Day, a free, hands-on workshop that will give you insight into how to create Ajax-enabled rich Web user interfaces and Java EE-based SOA services with ease. We'll introduce you to the development platform Oracle is using for its Fusion enterprise applications, and show you how to get up to speed with it. The workshop will get you started developing with the latest versions of Oracle JDeveloper and Oracle ADF 11g, including the Ajax-enabled ADF Faces rich client components. Thursday, March 18, 2010 8:00 a.m. - 5:00 p.m. Calgary Marriott hotel 110 9th Avenue, SE Calgary, Alberta T2G 5A6 Wednesday, April 1, 2010 8:00 a.m. - 5:00 p.m. Four Seasons Hotel Atlanta 75 Fourteenth Street Atlanta, Georgia 30309 This workshop is designed for developers, project managers, and architects. Whether you are currently using Java, traditional 4GL tools like Oracle Forms, PeopleTools, and Visual Basic, or just looking for a better development platform - this session is for you. Get explanation from Oracle experts, try your hands at actual development, and get a chance to win an Apple iPod Touch and Oracle prizes. Come see how Oracle can help you deliver cutting edge UIs and standard -based applications faster with the Oracle Fusion Development software stack. At this event you will: * Get to know the Oracle Fusion development architecture and strategy from Oracle's experts. * Learn the easy way to extend your existing development skill sets to incorporate new technologies and architectures that include Service-Oriented Architecture, Java EE, and Web 2.0 * Participate in hands-on labs and experience new technologies in a familiar and productive development environment with Oracle experts guidance. Click on the Register Now Calgary, Alberta to register for the Calgary event and click on the Register Now Atlanta, GA to register for the Atlanta FREE events. Don't miss your exclusive opportunity to network with your peers and discuss today's most vital application development topics with Oracle experts.

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• How to use a FolderBrowserDialog from a WPF application with MVVM

  - by David Work

  I'm trying to use the FolderBrowserDialog from my WPF application - nothing fancy. I don't much care that it has the Windows Forms look to it. I found a question with a suitable answer (How to use a FolderBrowserDialog from a WPF application), except I'm using MVVM. This was the answer I "implemented", except I can't get the window object and I'm just calling ShowDialog() without any parameters. The problem is this: var dlg = new FolderBrowserDialog(); System.Windows.Forms.DialogResult result = dlg.ShowDialog(this.GetIWin32Window()); In my ViewModel there the this has no GetIWin32Window() method for me to get the Window context. Any ideas on how to make this work?

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• WPF TreeView Virtualization

  - by Carlo

  I'm trying to figure out this virtualization feature, I'm not sure if I'm understanding it wrong or what's going on, but I'm using the ANTS memory profiler to check the number of items in a virtualized TreeView, and it just keeps increasing. I have a TreeView with 1,001 items (1 root, 1000 sub-items), and I always get up to 1,001 TreeViewItems, 1,001 ToggleButtons and 1,001 TextBlocks. Isn't virtualization supposed to re-use the items? If so, why would I have 1,001 of each? Also, the CleanUpVirtualizedItem never fires. Let me know if I'm understanding this wrong and if you have resources on how to use this. I've searched over the internet but haven't found anything useful. EDIT: Even the memory used by the tree grows from aporx. 4mb to 12mb when I expand and scroll through all the items. Let me know thanks. This is my code. XAML: <Window x:Class="RadTreeViewExpandedProblem.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Grid> <TreeView x:Name="treeView" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.CleanUpVirtualizedItem="TreeView_CleanUpVirtualizedItem"> <TreeView.ItemsPanel> <ItemsPanelTemplate> <VirtualizingStackPanel /> </ItemsPanelTemplate> </TreeView.ItemsPanel> </TreeView> </Grid> </Window> C#: public partial class Window1 : Window { public Window1() { InitializeComponent(); TreeViewItem rootItem = new TreeViewItem() { Header = "Item Level 0" }; for (int i = 0; i < 1000; i++) { TreeViewItem itemLevel1 = new TreeViewItem() { Header = "Item Level 1" }; itemLevel1.Items.Add(new TreeViewItem()); rootItem.Items.Add(itemLevel1); } treeView.Items.Add(rootItem); } private void TreeView_CleanUpVirtualizedItem(object sender, CleanUpVirtualizedItemEventArgs e) { } }

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• Can't create a fullscreen WPF popup

  - by Scrappydog

  Using WPF .NET 4.0 in VS2010 RTM: I can't create a fullscreen WPF popup. If I create a popup that is sized 50% width and 100% height everything works fine, but if I try to create a "full screen" popup sized to 100% width and height it ends up displaying at 100% width and 75% height... the bottom is truncated. Note: The width and height are actually being expressed in pixels in code, I'm using percent to make the situation a little more understandable... It "feels" like there is some sort of limit preventing the area of a popup from exceeding ~75% of the total area of the screen. UPDATE: Here is a Hello World example that shows the problem. <Window x:Class="TechnologyVisualizer.PopupTest" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="PopupTest" WindowStyle="None" WindowState="Maximized" Background="DarkGray"> <Canvas x:Name="MainCanvas" Width="1920" Height="1080"> <Popup Placement="Center" VerticalAlignment="Center" HorizontalAlignment="Center" Width="1900" Height="1060" Name="popContent"> <TextBlock Background="Red">Hello World</TextBlock> </Popup> <Button Canvas.Left="50" Canvas.Top="50" Content="Menu" Height="60" Name="button1" Width="80" FontSize="22" Foreground="White" Background="Black" Click="button1_Click" /> </Canvas> </Window> using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace TechnologyVisualizer { /// <summary> /// Interaction logic for PopupTest.xaml /// </summary> public partial class PopupTest : Window { public PopupTest() { InitializeComponent(); } private void button1_Click(object sender, RoutedEventArgs e) { popContent.IsOpen = true; } } } If you run this the bottom 25% of the popup is missing if you change the width of the popup to 500 then it will go full height

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• Query on MVVM pattern in WPF?

  - by Ashish Ashu

  I am implementing a MVVM pattern in my WPF application. My application main window is divided into four parts: Main Menu On the Top Outlook Navigation Control on the Left. A List View on the Middle. Another List view on the bottom. The Navigation control shows different setting (configuration) controls in the Tab items. All the four above are user controls which are placed in the main window. And corresponding to each user control there is separate view model which is bounded with a view model in the XAML of each control, however the model class remain the same between all the view model. And a MainWindow has a seperate View Model which is also bounded with a view model in the XAML of each control. Please help me out in framing a design in which each view models of all the controls above will interact with each other. Please let me know if my question is not clear to you!!

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• Wpf Combobox in Master/Detail MVVM

  - by isak

  I have MVVM master /details like this: <Window.Resources> <DataTemplate DataType="{x:Type model:EveryDay}"> <views:EveryDayView/> </DataTemplate> <DataTemplate DataType="{x:Type model:EveryMonth}"> <views:EveryMonthView/> </DataTemplate> </Window.Resources> <Grid> <ListBox Margin="12,24,0,35" Name="schedules" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Elements}" SelectedItem="{Binding Path=CurrentElement}" DisplayMemberPath="Name" HorizontalAlignment="Left" Width="120"/> <ContentControl Margin="168,86,32,35" Name="contentControl1" Content="{Binding Path=CurrentElement.Schedule}" /> <ComboBox Height="23" Margin="188,24,51,0" Name="comboBox1" VerticalAlignment="Top" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Schedules}" SelectedItem="{Binding Path=CurrentElement.Schedule}" DisplayMemberPath="Name" SelectedValuePath="ID" SelectedValue="{Binding Path=CurrentElement.Schedule.ID}" /> </Grid> This Window has DataContext class: public class MainViewModel : INotifyPropertyChanged { public MainViewModel() { _elements.Add(new Element("first", new EveryDay("First EveryDay object"))); _elements.Add(new Element("second", new EveryMonth("Every Month object"))); _elements.Add(new Element("third", new EveryDay("Second EveryDay object"))); _schedules.Add(new EveryDay()); _schedules.Add(new EveryMonth()); } private ObservableCollection<ScheduleBase> _schedules = new ObservableCollection<ScheduleBase>(); public ObservableCollection<ScheduleBase> Schedules { get { return _schedules; } set { _schedules = value; this.OnPropertyChanged("Schedules"); } } private Element _currentElement = null; public Element CurrentElement { get { return this._currentElement; } set { this._currentElement = value; this.OnPropertyChanged("CurrentElement"); } } private ObservableCollection<Element> _elements = new ObservableCollection<Element>(); public ObservableCollection<Element> Elements { get { return _elements; } set { _elements = value; this.OnPropertyChanged("Elements"); } } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } #endregion } One of Views: <UserControl x:Class="Views.EveryDayView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <Grid > <GroupBox Header="Every Day Data" Name="groupBox1" VerticalAlignment="Top"> <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> <TextBox Name="textBox2" Text="{Binding Path=AnyDayData}" /> </Grid> </GroupBox> </Grid> I have problem with SelectedItem in ComboBox.It doesn't works correctly.

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• To connect Gstreamer with Qt in order to play a gstreamer video in the Qt Widget

  - by raggio

  I tried using phonon to play the video but could not succeed. Off-late came to know through the Qt forums that even the latest version of Qt does not support phonon. Thats when i started using Gstreamer.Any suggestions as to how to connect the Gstreamer window with the Qt widget?My aim is to play a video using Gstreamer on the Qt widget.So how do i link the gstreamer window and the Qt widget? I am successful in getting the Id of the widget through winid(). Further with the help of Gregory Pakosz, I have added the below 2 lines of code in my application - QApplication::syncX(); gst_x_overlay_set_xwindow_id(GST_X_OVERLAY(sink), widget->winId()); However am not able to link the Qt widget with the gstreamer video window. This is what my sample code would look like :- int main(int argc, char *argv[]) { printf("winid=%d\n", w.winId()); gst_init (NULL,NULL); /* create a new bin to hold the elements */ bin = gst_pipeline_new ("pipeline"); /* create a disk reader */ filesrc = gst_element_factory_make ("filesrc", "disk_source"); g_assert (filesrc); g_object_set (G_OBJECT (filesrc), "location", "PATH_TO_THE_EXECUTABLE", NULL); demux = gst_element_factory_make ("mpegtsdemux", "demuxer"); if (!demux) { g_print ("could not find plugin \"mpegtsmux\""); return -1; } vdecoder = gst_element_factory_make ("mpeg2dec", "decode"); if (!vdecoder) { g_print ("could not find plugin \"mpeg2dec\""); return -1; } videosink = gst_element_factory_make ("xvimagesink", "play_video"); g_assert (videosink); /* add objects to the main pipeline */ gst_bin_add_many (GST_BIN (bin), filesrc, demux, vdecoder, videosink, NULL); /* link the elements */ gst_element_link_many (filesrc, demux, vdecoder, videosink, NULL); gst_element_set_state(videosink, GST_STATE_READY); QApplication::syncX(); gst_x_overlay_set_xwindow_id(GST_X_OVERLAY(videosink), w.winId()); /* start playing */ gst_element_set_state (bin, GST_STATE_PLAYING); } Could you explain more in detail about the usage of gst_x_overlay_set_xwindow_id() wrt my context? Could i get any hint as to how i can integrate gstreamer under Qt? Please help me solve this problem

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• Couldn't attachto Firefox 3.x browser by using Browser.AttachTo<FireFox>method in WatiN 2.0 RC1

  - by Shu Yang

  I am using HTTPWatch automation API to launch a new Firefox instance like that: HttpWatch.Controller ct = new HttpWatch.Controller(); HttpWatch.Plugin plugin = ct.FireFox.New(""); plugin.GotoURL("http://www.google.com"); These codes could start a Firefox browser successfully. Then I want to control the browser in WatiN 2.0: FireFox ff = Browser.AttachTo<FireFox>(Find.ByTitle("Google")); WatiN could not find Firefox window (JSSH plugin has been added in Firefox). But the same test on IE 7 is ok. I even tried to open a Firefox window manually and visit google.com page. WaitN in IE7 could attach to the browser, but Firefox failed. Is there anything wrong with my codes? Or any other advice? Thanks in advance! Here is the config for my environment: OS: Windows XP Pro SP2 WatiN: 2.0 RC1 Browser: IE 7, Firefox 3.0/3.5/3.6 with JSSH plugin

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• MochaUI modal dialog form submit

  - by VP

  Hi, i'm playing with Motools + MochaUI and i'm facing a problem: I'm trying to submit a form from a modal window. It is working fine, the problem is that it is reloading the parent window. The code to my Modal: MUI.newPolicyWindow = function(){ new MUI.Modal({ id: 'modalNewPolicy', title: 'New Policy', contentURL: '/policies/new', type: 'modal', width: 340, height: 180, scrollbars: false }); } And my js to handle the action (the form's name is new_policy $('new_policy').addEvent('submit', function(e){ new Event(e).stop(); this.set('send', {onComplete: function(response) { MochaUI.notification('Policy created'); MUI.closeAll(); }}); this.send() }); Note that the form is submitted, the problem is that i would like that, on Success, it just close my Modal and send this Mocha's cute notification.

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• Display custom title bar for Android with XML

  - by Casebash

  In Android documentation describing "Configuring General Window Properties", it is suggested that specifying properties via XML is preferable whenever possible to avoid seeing the title bar flash. As an example, instead of setting Window.FEATURE_NO_TITLE with requestWindowFeature, they set it to @android:style/Theme.NoTitleBar. Is there a similar way to set a custom title bar to be used in the XML? Update: I just found this article, according to which this article, the best way to draw a title bar is to ignore FEATURE_CUSTOM_TITLE and instead just draw the title bar as part of your main view. This would not only avoid the flashing, but also problems caused by padding.

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• Google Chrome: XMLHttpRequest.send() not working while doing POST.

  - by Dave Van den Eynde

  I'm working on an application that allows the user to send a file using a form (a POST request), and that executes a series of GET requests while that file is being uploaded to gather information about the state of the upload. It works fine in IE and Firefox, but not so much in Chrome and Safari. The problem is that even though send() is called on the XMLHttpRequest object, nothing is being requested as can be seen in Fiddler. To be more specific, an event handler is placed on the "submit" event of the form, that places a timeout function call on the window: window.setTimeout(startPolling, 10); and in this function "startPolling" sequence is started that keeps firing GET requests to receive status updates from a web service that returns text/json that can be used to update the UI. Is this a limitation (perhaps security-wise?) on WebKit based browsers? Is this a Chrome bug? (I'm seeing the same behaviour in Safari though).

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• how to set custom title bar TextView Value dynamically in android?

  - by UMMA

  friends, i have created custom title bar using following titlebar.xml file with code <?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/myTitle" android:text="This is my new title" android:layout_width="fill_parent" android:layout_height="fill_parent" android:textColor="@color/titletextcolor" android:layout_marginLeft="25px" android:paddingTop="3px" /> and java code to display custom title bar on each activity. @Override public void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.mytitle); super.onCreate(savedInstanceState); setContentView(R.layout.main); } now i want to set textview value dynamically in each activity can any one guide me how can i achieve this? using findviewbyid here i dont get reference of that textview to set value because main layout does not contains any textbox with such a name but mytitle. any help would be appriciated.

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• WrapPanel doesn't wrap in WPF ListView

  - by Joan Venge

  I am using a ListView with an ItemTemplate like this: <Window.Resources> <DataTemplate x:Key="ItemTemplate"> <WrapPanel Orientation="Horizontal"> <Image Width="50" Height="50" Stretch="Fill" Source="{Binding Cover}"/> <Label Content="{Binding Title}" /> </WrapPanel> </DataTemplate> </Window.Resources> But the Covers do not fill the screen like windows explorer windows. How do I do this? They just get stacked vertically in my version.

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• Downloading a file over HTTP the SSIS way

  This post shows you how to download files from a web site whilst really making the most of the SSIS objects that are available. There is no task to do this, so we have to use the Script Task and some simple VB.NET or C# (if you have SQL Server 2008) code. Very often I see suggestions about how to use the .NET class System.Net.WebClient and of course this works, you can code pretty much anything you like in .NET. Here I’d just like to raise the profile of an alternative. This approach uses the HTTP Connection Manager, one of the stock connection managers, so you can use configurations and property expressions in the same way you would for all other connections. Settings like the security details that you would want to make configurable already are, but if you take the .NET route you have to write quite a lot of code to manage those values via package variables. Using the connection manager we get all of that flexibility for free. The screenshot below illustrate some of the options we have. Using the HttpClientConnection class makes for much simpler code as well. I have demonstrated two methods, DownloadFile which just downloads a file to disk, and DownloadData which downloads the file and retains it in memory. In each case we show a message box to note the completion of the download. You can download a sample package below, but first the code: Imports System Imports System.IO Imports System.Text Imports System.Windows.Forms Imports Microsoft.SqlServer.Dts.Runtime Public Class ScriptMain Public Sub Main() ' Get the unmanaged connection object, from the connection manager called "HTTP Connection Manager" Dim nativeObject As Object = Dts.Connections("HTTP Connection Manager").AcquireConnection(Nothing) ' Create a new HTTP client connection Dim connection As New HttpClientConnection(nativeObject) ' Download the file #1 ' Save the file from the connection manager to the local path specified Dim filename As String = "C:\Temp\Sample.txt" connection.DownloadFile(filename, True) ' Confirm file is there If File.Exists(filename) Then MessageBox.Show(String.Format("File {0} has been downloaded.", filename)) End If ' Download the file #2 ' Read the text file straight into memory Dim buffer As Byte() = connection.DownloadData() Dim data As String = Encoding.ASCII.GetString(buffer) ' Display the file contents MessageBox.Show(data) Dts.TaskResult = Dts.Results.Success End Sub End Class Sample Package HTTPDownload.dtsx (74KB)

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• WPF version of Application.OpenForms

  - by Redburn

  I have an application in which I will have to get at another WPF window which is open. In WinForms, I was able to use: MainWindow main = (MainWindow)Application.OpenForms["MainWindow"]; To be able to access the the form. Now in WPF it does not exist. I have seen the other post on this site which is relevant, however it uses Application.Window which is not contained in the call. I just have : Current Equals GetContentStream GetCookie GetRemoteStream GetResourceStream LoadComponet RefrenceEquals ResourceAssembly SetCookie So my question is this, is there a different version for OpenForms, or is there just a different way to go about it.

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• Java Simple WGS84 Lat Lon to Pixel X, Y

  - by Cnich

  I've read a multitude of information regarding map projection today. The amount of information available is overwhelming. I am attempting to simply convert lat, long values into a screen X, Y coordinate not using any map. I do not need the values projected onto any map, just on the window. The window itself is representing approx. a 1500x1500 meter location. Lat, Long accuracy needed is to a 1/10th of a second. What may be some simpler ways in converting lat/long representation to the screen? I've read several articles and post regarding translation onto images, but nothing related to the natural java coordinate system. Thanks for any insight.

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• Firebug and jQuery selectors in an iFrame

  - by writes_on

  Hi all, I'm working on a web application and using the jQuery plug-in Colorbox to pop up a window that presents a form for editing elements of the parent window. I'm using Firebug to debug my Javascript and jQuery, and I noticed that I can't select an element in my Colorbox HTML form using the jQuery console command line. For instance: $date = $("#date"); returns nothing when run from the jQuery console command line, even though I have an input element with id="date" and the Firebug "element inspect" pointer can find the element in the iFrame. Is there a way to get Firebug's console to access the elements in an iFrame? Thanks for your help! Doug

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• Replacing UISplitViewController. New version isn't added for current orientation, frame size

  - by Justin Williams

  My application has two different modes I am switching between by replacing the two views in a UISplitViewController. This involves instantiating the new views and a new UISplitViewController. I then set the new detail view as the UISplitViewController's delegate. I'm running into an issue where when I replace the view controllers and splitview controller, they are not properly sized or added for the current orientation. For instance, if I have my iPad in UIDeviceOrientationPortraitUpsideDown the view will be upside down when I call addSubview, but will rotate to the proper orientation after a second. In another instance, if I have the device in landscape mode and swap the views, the detail view controller is not fully stretched to the size of the view. If I rotate the device to portrait and back to landscape, its resized properly. The code I'm using to create the new split view and view controllers is as follows. - (void)showNotes { teiphoneAppDelegate *appDelegate = (teiphoneAppDelegate *)[[UIApplication sharedApplication] delegate]; [appDelegate.splitViewController.view removeFromSuperview]; OMSavedScrapsController *notesViewController = [[OMSavedScrapsController alloc] initWithNibName:@"SavedScraps" bundle:nil]; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:notesViewController]; ComposeViewController *noteDetailViewController = [[ComposeViewController alloc] initWithNibName:@"ComposeView-iPad" bundle:nil]; UISplitViewController *newSplitVC = [[UISplitViewController alloc] init]; newSplitVC.viewControllers = [NSArray arrayWithObjects:navController, noteDetailViewController, nil]; newSplitVC.delegate = noteDetailViewController; appDelegate.splitViewController = newSplitVC; // Fade in the new split view appDelegate.splitViewController.view.alpha = 0.0f; [appDelegate.window addSubview:appDelegate.splitViewController.view]; [appDelegate.window makeKeyAndVisible]; [UIView beginAnimations:nil context:appDelegate.window]; [UIView setAnimationDuration: 0.5f]; [UIView setAnimationCurve: UIViewAnimationCurveEaseInOut]; appDelegate.splitViewController.view.alpha = 1.0f; [UIView commitAnimations]; [notesViewController release]; [navController release]; [noteDetailViewController release]; [newSplitVC release]; } Any suggestions for how to get the new splitview to add for the device's current orientation and frame?

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• request for member view in something not a structure or union

  - by james

  Hi I have this error when i build my application iphone: request for member view in something not a structure or union on [CommuneSlider.view removeFromSuperview]; the code: - (void) CommuneSelected { CommuneDetailsViewController *com = [[CommuneDetailsViewController alloc] initWithNibName:@"CommuneDetailsViewController" bundle:nil]; UINavigationController *navig = [[UINavigationController alloc] initWithRootViewController:com]; [self setCommuneDetails:(CommuneDetailsViewController *) navig]; [navig setNavigationBarHidden:YES]; [com release]; [navig release]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:.8]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:window cache:YES]; [CommuneSlider.view removeFromSuperview]; [self.window addSubview:[CommuneDetails view]]; [UIView commitAnimations]; } need HELP

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• attachEvent inserts events at the begin of the queue while addEventListener appends events to the qu

  - by Marco Demaio

  I use this simple working function to add events: function AppendEvent(html_element, event_name, event_function) { if(html_element) { if(html_element.attachEvent) //IE html_element.attachEvent("on" + event_name, event_function); else if(html_element.addEventListener) //FF html_element.addEventListener(event_name, event_function, false); }; } While doing this simple test: AppendEvent(window, 'load', function(){alert('load 1');}); AppendEvent(window, 'load', function(){alert('load 2');}); I noticed that FF3.6 addEventListener appends each new events at the end of the events' queue, therefor in the above example you would get two alerts saying 'load 1' 'load 2'. On the other side IE7 attachEvent inserts each new events at the begining of the events' queue, therefor in the above example you would get to alerts saying 'load 2' 'load 1'. Is there a way to fix this and make both to work in the same way? Thanks!

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• Who benefits from the use of Design Patterns?

  Who benefits from the use of design patterns is like asking who benefits from clean air or a good education. All of the stakeholders of a project benefit from the use of design patterns. Project Sponsor Project sponsors benefit from the use of design patterns because they promote reduced development time which translates in to shorter project timelines and greater return on investment compared to other projects that do not make use of design patterns. Project Manager Project managers benefit from the use of design patterns because they reduce the amount of time needed to design a system, and typically the sub components of the system already have a proven track record. System Architect/Engineer System architects/engineers benefit from the use of design patterns because reduce the amount of time needed to design the core a system. The additional time is used to alter the design pattern through the use of innovative design and common design principles to adhere to the project’s requirements. Programmer Programmers benefit from the use of design patterns because they can reuse existing code already established by the design pattern and only have to integrate the changes outlined by the system architects/engineers. Tester Testers benefit from the use of design patterns because they can alter the existing test established for the design pattern to take in to account the changes made by the system architects/engineers. User Users benefit from the use of design patterns because the software is typically delivered sooner than projects that do not incorporate the use of design patterns, and they are assumed that the system will work as designed because it was based on a system that was already proven to work properly.

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• Error Connecting to Oracle Database from Pentaho Report Designer

  - by knt

  Hi all, I am new to Pentaho, and I am struggling to set up a new database connection. I am trying to connect to an Oracle 10g database, but whenever I test the connection, I get the below error. It doesn't really seem to list any specific error message so I'm not really sure what to do or where to go from this point. I placed ojdbc jar's in my tomcat lib folder, but maybe there is another place those should go. Any help/hints would be greatly appreciated. Error connecting to database [OFF SSP Cert] : org.pentaho.di.core.exception.KettleDatabaseException: Error occured while trying to connect to the database Error connecting to database: (using class oracle.jdbc.driver.OracleDriver) oracle/dms/instrument/ExecutionContextForJDBC org.pentaho.di.core.exception.KettleDatabaseException: Error occured while trying to connect to the database Error connecting to database: (using class oracle.jdbc.driver.OracleDriver) oracle/dms/instrument/ExecutionContextForJDBC org.pentaho.di.core.database.Database.normalConnect(Database.java:366) org.pentaho.di.core.database.Database.connect(Database.java:315) org.pentaho.di.core.database.Database.connect(Database.java:277) org.pentaho.di.core.database.Database.connect(Database.java:267) org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:76) org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2443) org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:510) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:329) org.pentaho.ui.xul.swing.tags.SwingButton$OnClickRunnable.run(SwingButton.java:58) java.awt.event.InvocationEvent.dispatch(Unknown Source) java.awt.EventQueue.dispatchEvent(Unknown Source) java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) java.awt.Dialog$1.run(Unknown Source) java.awt.Dialog$3.run(Unknown Source) java.security.AccessController.doPrivileged(Native Method) java.awt.Dialog.show(Unknown Source) java.awt.Component.show(Unknown Source) java.awt.Component.setVisible(Unknown Source) java.awt.Window.setVisible(Unknown Source) java.awt.Dialog.setVisible(Unknown Source) org.pentaho.ui.xul.swing.tags.SwingDialog.show(SwingDialog.java:234) org.pentaho.reporting.ui.datasources.jdbc.ui.XulDatabaseDialog.open(XulDatabaseDialog.java:237) org.pentaho.reporting.ui.datasources.jdbc.ui.ConnectionPanel$EditDataSourceAction.actionPerformed(ConnectionPanel.java:162) javax.swing.AbstractButton.fireActionPerformed(Unknown Source) javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) javax.swing.DefaultButtonModel.setPressed(Unknown Source) javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) java.awt.AWTEventMulticaster.mouseReleased(Unknown Source) java.awt.AWTEventMulticaster.mouseReleased(Unknown Source) java.awt.Component.processMouseEvent(Unknown Source) javax.swing.JComponent.processMouseEvent(Unknown Source) java.awt.Component.processEvent(Unknown Source) java.awt.Container.processEvent(Unknown Source) java.awt.Component.dispatchEventImpl(Unknown Source) java.awt.Container.dispatchEventImpl(Unknown Source) java.awt.Component.dispatchEvent(Unknown Source) java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) java.awt.Container.dispatchEventImpl(Unknown Source) java.awt.Window.dispatchEventImpl(Unknown Source) java.awt.Component.dispatchEvent(Unknown Source) java.awt.EventQueue.dispatchEvent(Unknown Source) java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) java.awt.Dialog$1.run(Unknown Source) java.awt.Dialog$3.run(Unknown Source) java.security.AccessController.doPrivileged(Native Method) java.awt.Dialog.show(Unknown Source) java.awt.Component.show(Unknown Source) java.awt.Component.setVisible(Unknown Source) java.awt.Window.setVisible(Unknown Source) java.awt.Dialog.setVisible(Unknown Source) org.pentaho.reporting.ui.datasources.jdbc.ui.JdbcDataSourceDialog.performConfiguration(JdbcDataSourceDialog.java:661) org.pentaho.reporting.ui.datasources.jdbc.JdbcDataSourcePlugin.performEdit(JdbcDataSourcePlugin.java:67) org.pentaho.reporting.designer.core.actions.report.AddDataFactoryAction.actionPerformed(AddDataFactoryAction.java:79)

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• WPF ComboBox Binding to non string object

  - by Mike L

  I'm using MVVM (MVVM Light Toolkit) and have a property on the view model which exposes a list of objects. The objects contain two properties, both strings, which correlate to an abbreviation and a description. I want the ComboBox to expose the pairing as "abbreviation - description". If I use a data template, it does this easily. I have another property on the view model which represents the object that should display as selected -- the chosen item in the ComboBox. I'm binding the ItemsSource to the list, as it represents the universe of available selections, and am trying to bind the SelectedItem to this object. I'm killing myself trying to figure out why I can't get it to work, and feeling more like a fraud by the hour. In trying to learn why this works, I created the same approach with just a list of strings, and a selected string. This works perfectly. So, it clearly has something to do with the typing... perhaps something in choosing equality? Or perhaps it has to do with the data template? Here is the XAML: <Window x:Class="MvvmLight1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="300" Width="300" DataContext="{Binding Main, Source={StaticResource Locator}}"> <Window.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="Skins/MainSkin.xaml" /> </ResourceDictionary.MergedDictionaries> <DataTemplate x:Key="DataTemplate1"> <StackPanel Orientation="Horizontal"> <TextBlock TextWrapping="Wrap" Text="{Binding CourtCode}"/> <TextBlock TextWrapping="Wrap" Text=" - "/> <TextBlock TextWrapping="Wrap" Text="{Binding CourtDescription}"/> </StackPanel> </DataTemplate> </ResourceDictionary> </Window.Resources> <Grid x:Name="LayoutRoot"> <ComboBox x:Name="cmbAbbrevDescriptions" Height="35" Margin="25,75,25,25" VerticalAlignment="Top" ItemsSource="{Binding Codes}" ItemTemplate="{DynamicResource DataTemplate1}" SelectedItem="{Binding selectedCode}" /> <ComboBox x:Name="cmbStrings" Height="35" Margin="25" VerticalAlignment="Top" ItemsSource="{Binding strs}" SelectedItem="{Binding selectedStr}"/> </Grid> </Window> And, if helpful, here is the ViewModel: using GalaSoft.MvvmLight; using MvvmLight1.Model; using System.Collections.Generic; namespace MvvmLight1.ViewModel { public class MainViewModel : ViewModelBase { public const string CodesPropertyName = "Codes"; private List<Court> _codes = null; public List<Court> Codes { get { return _codes; } set { if (_codes == value) { return; } var oldValue = _codes; _codes = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(CodesPropertyName, oldValue, value, true); } } public const string selectedCodePropertyName = "selectedCode"; private Court _selectedCode = null; public Court selectedCode { get { return _selectedCode; } set { if (_selectedCode == value) { return; } var oldValue = _selectedCode; _selectedCode = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(selectedCodePropertyName, oldValue, value, true); } } public const string strsPropertyName = "strs"; private List<string> _strs = null; public List<string> strs { get { return _strs; } set { if (_strs == value) { return; } var oldValue = _strs; _strs = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(strsPropertyName, oldValue, value, true); } } public const string selectedStrPropertyName = "selectedStr"; private string _selectedStr = ""; public string selectedStr { get { return _selectedStr; } set { if (_selectedStr == value) { return; } var oldValue = _selectedStr; _selectedStr = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(selectedStrPropertyName, oldValue, value, true); } } /// <summary> /// Initializes a new instance of the MainViewModel class. /// </summary> public MainViewModel() { Codes = new List<Court>(); Court code1 = new Court(); code1.CourtCode = "ABC"; code1.CourtDescription = "A Court"; Court code2 = new Court(); code2.CourtCode = "DEF"; code2.CourtDescription = "Second Court"; Codes.Add(code1); Codes.Add(code2); Court code3 = new Court(); code3.CourtCode = "DEF"; code3.CourtDescription = "Second Court"; selectedCode = code3; selectedStr = "Hello"; strs = new List<string>(); strs.Add("Goodbye"); strs.Add("Hello"); strs.Add("Ciao"); } } } And here is the ridiculously trivial class that is being exposed: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace MvvmLight1.Model { public class Court { public string CourtCode { get; set; } public string CourtDescription { get; set; } } } Thanks!

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• Mean filter in MATLAB without loops or signal processing toolbox

  - by Doresoom

  I need to implement a mean filter on a data set, but I don't have access to the signal processing toolbox. Is there a way to do this without using a for loop? Here's the code I've got working: x=0:.1:10*pi; noise=0.5*(rand(1,length(x))-0.5); y=sin(x)+noise; %generate noisy signal a=10; %specify moving window size my=zeros(1,length(y)-a); for n=a/2+1:length(y)-a/2 my(n-a/2)=mean(y(n-a/2:n+a/2)); %calculate mean for each window end mx=x(a/2+1:end-a/2); %truncate x array to match plot(x,y) hold on plot(mx,my,'r')

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• Downloading a file over HTTP the SSIS way

  This post shows you how to download files from a web site whilst really making the most of the SSIS objects that are available. There is no task to do this, so we have to use the Script Task and some simple VB.NET or C# (if you have SQL Server 2008) code. Very often I see suggestions about how to use the .NET class System.Net.WebClient and of course this works, you can code pretty much anything you like in .NET. Here I’d just like to raise the profile of an alternative. This approach uses the HTTP Connection Manager, one of the stock connection managers, so you can use configurations and property expressions in the same way you would for all other connections. Settings like the security details that you would want to make configurable already are, but if you take the .NET route you have to write quite a lot of code to manage those values via package variables. Using the connection manager we get all of that flexibility for free. The screenshot below illustrate some of the options we have. Using the HttpClientConnection class makes for much simpler code as well. I have demonstrated two methods, DownloadFile which just downloads a file to disk, and DownloadData which downloads the file and retains it in memory. In each case we show a message box to note the completion of the download. You can download a sample package below, but first the code: Imports System Imports System.IO Imports System.Text Imports System.Windows.Forms Imports Microsoft.SqlServer.Dts.Runtime Public Class ScriptMain Public Sub Main() ' Get the unmanaged connection object, from the connection manager called "HTTP Connection Manager" Dim nativeObject As Object = Dts.Connections("HTTP Connection Manager").AcquireConnection(Nothing) ' Create a new HTTP client connection Dim connection As New HttpClientConnection(nativeObject) ' Download the file #1 ' Save the file from the connection manager to the local path specified Dim filename As String = "C:\Temp\Sample.txt" connection.DownloadFile(filename, True) ' Confirm file is there If File.Exists(filename) Then MessageBox.Show(String.Format("File {0} has been downloaded.", filename)) End If ' Download the file #2 ' Read the text file straight into memory Dim buffer As Byte() = connection.DownloadData() Dim data As String = Encoding.ASCII.GetString(buffer) ' Display the file contents MessageBox.Show(data) Dts.TaskResult = Dts.Results.Success End Sub End Class Sample Package HTTPDownload.dtsx (74KB)

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