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  • eSTEP TechCast - November 2012

    - by uwes
    Dear partner, we are pleased to announce our next eSTEP TechCast on Thursday 1st of November and would be happy if you could join. Please see below the details for the next TechCast.Date and time:Thursday, 01. November 2012, 11:00 - 12:00 GMT (12:00 - 13:00 CET; 15:00 - 16:00 GST) Title:  Update on Solaris 11 Abstract:Oracle announced an update on Solaris 11 on Oracle OpenWorld. Join us in this call to get a brief summary of the enhancements and how they help to build better solutions for your customers. Target audience: Tech Presales Speaker: Jörg Möllenkamp Call Info:Call-in-toll-free number: 08006948154 (United Kingdom)Call-in-toll-free number: +44-2081181001 (United Kingdom) Show global numbers Conference Code: 803 594 3Security Passcode: 9876Webex Info (Oracle Web Conference) Meeting Number: 599 775 167Meeting Password: tech2011 Playback / Recording / Archive: The webcasts will be recorded and will be available shortly after the event in the eSTEP portal under the Events tab, where you could find also material from already delivered eSTEP TechCasts. Use your email-adress and PIN: eSTEP_2011 to get access. Feel free to have a look. We are happy to get your comments and feedback. Thanks and best regards, Partner HW Enablement EMEA

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  • It Ain't Over 'Til It's Over

    - by Oracle OpenWorld Blog Team
    Oracle OpenWorld 2012 is behind us. Well, for San Francisco, anyhow. The team is already working on the Latin America event which takes place in December in Sao Paulo, and an OpenWorld in Asia for 2013 as well. And of course they're already working on the next San Francisco OpenWorld for 2013. So what happens after the conference is over? People pack up demo and network gear and ship it out to wherever it's going next; take down and recycle signage; strike the keynote set, the exhibition and demo halls, the street tents, and anything else that was constructed just for the conference. There's a lot of post-conference analyis going on too. Oracle and partner marketing teams are looking at and following up on the leads they got from booth, demo, and lounge traffic. The events team is evaluating the session and conference surveys you filled out if you attended -- looking to identify the best speakers, what worked and didn't work, how you liked the venues, the food, the entertainment, the presentations. From all of that information will come recommendations for next year on what to keep doing, what to do better, and what not to do at all. The goal for each year's conference is to be better than last year's. If you attended and haven't filled out the surveys yet, you have until October 19 for them to be counted, and for you to be entered into a daily sweepstakes. Click here for more information. Posts to this blog will slow down for a while, but we'll post news about Oracle OpenWorld in San Francisco and around the world when we have it. Any suggestions about future blog topics are welcome. Oh - I forgot to mention that you can sign up to be notified when registration for Oracle OpenWorld 2013 goes live. If you register at that time you'll get the best discount available on attending next year. So sign up, and stay tuned.

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  • Extracting useful information from free text

    - by insta
    We filter and analyse seats for events. Apparently writing a domain query language for the floor people isn't an option. I'm using C# 4.0 & .NET 4.0, and have relatively free reign to use whatever open-source tools are available. </background-info> If a request comes in for "FLOOR B", the sales people want it to show up if they've entered "FLOOR A-FLOOR F" in a filter. The only problem I have is that there's absolutely no structure to the parsed parameters. I get the string already concatenated (it actually uses a tilde instead of dash). Examples I've seen so far with matches after each: 101WC-199WC (needs to match 150WC) AAA-ZZZ (needs to match AAA, BBB, ABC but not BB) LOGE15-LOGE20 (needs to match LOGE15 but not LOGE150) At first I wanted to try just stripping off the numeric part of the lower and upper, and then incrementing through that. The problem I have is that only some entries have numbers, sometimes the numbers AND letters increment, sometimes its all letters that increment. Since I can't impose any kind of grammar to use (I really wanted [..] expansion syntax), I'm stuck using these entries. Are there any suggestions for how to approach this parsing problem?

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  • USB ports not working on Xubuntu 12.04 LTS

    - by Zchpyvr
    Basically, my USB ports on my IBM Thinkpad T43 have stopped working most of the time. Sometimes, they mount and appear in Nautilus, but other times, they aren't recognized. The timeline of events on this laptop for the past few months: Started having problems after using a USB port hub. The port would sometimes work but would be fixed with the occasional reboot. Re-partitioned/Expanded my Xubuntu partition (I have a Windows XP/Xubuntu dual boot). Now the majority of the time, the USB fails to recognize devices. In addition, the few times they are recognized, the device may suddenly disconnect. Things I've noticed: The devices still receive power from my computer (I can charge my ipod..etc..) I can't understand dmesg outputs. I don't know if lsusb is telling me anything useful. My dmesg output is here: http://pastebin.com/KdNxHcFC Things start to get weird at the bottom of the file. And my lsusb is: $ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

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  • What makes one language any better than another when both are designed for the same goals? [closed]

    - by Justin808
    I'm in the process of creating a grammar for a scripting language but as I'm working on it I started to wonder what makes a language good in the first place. I know the goals for my script but there are always 1000 different ways to go about doing things. Goals: Easy to use and understand (not my grandma could do it easy, but the secretary at the front desk could do it or the VP of marketing could do it type of easy) No user defined functions or subroutines. Its use would be in events of objects in a system similar to HyperCard. Conceptually I was thinking of a language like this: set myVariable to 'Hello World' set counter to 0 repeat 5 times with x begin set counter to counter add x end set myVariable to myVariable plus ' ' plus counter popup myVariable set text of label named 'label' to 'new text' set color of label named 'label' to blue The end result would popup a dialog with the contents Hello World 15 it would also change the text of a label and make it blue. But I could do the same thing 1000 different ways. So what makes one language any better than another when both are designed for the same goals?

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  • The Oracle EMEA Partner Event of the Year- FREE, LIVE & ONLINE!

    - by Claudia Costa
    New products. New specializations. New opportunities. Find out how you can use them to build your Oracle business even faster and more effectively in 2010/11. The date for your diary is the 29th of June 2010, at 11:00 GMT. And this summer's event is bigger and better than ever. You will learn: What Oracle's acquisition of Sun Microsystems means for your business and your customers How Oracle Specialization can help you grow faster and smarter, and how Oracle partners from across the region are already benefitting Why Oracle's latest technology, applications, middleware and hardware products and solutions offer you unbeatable new business opportunities How Oracle's partner program is evolving to help partners succeed with a live link to the Oracle FY11 Global Partner Kickoff How specialization has helped a former Microsoft executive become one of the world's most successful social entrepreneurs You'll also have the chance to network with Oracle experts and other partners, and download valuable collateral from specially constructed virtual information booths. Plus, at the end of the event, submit your feedback form for the chance to win two passes to Oracle OpenWorld in San Francisco this September! Don't miss out! REGISTER TODAY!  for this exciting, exclusive online event. Visit here for more information and to view the complete agenda We look forward to welcoming you on the 29th of June! Yours sincerely, Stein SurlienSenior Vice President, Alliances & Channels, Oracle EMEA PS. The Oracle PartnerNetwork Days Virtual Event will be followed by "Oracle PartnerNetwork Days Executive Forums", and "Oracle PartnerNetwork Days Satellite Events" in various countries. Please look out for further communications from your local Oracle team.

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  • Building My First JavaFX Application Using Netbeans 7.1

    - by javafx4you
    Angela Caicedo, Oracle Technology Evangelist for JavaFX, has released a series of videos demonstrating how to build a simple JavaFX application using Netbeans 7.1. This video series is a great introduction to using JavaFX and takes the viewer through easy to follow, step-by-step instructions, including example code and showing the results along the way. These videos are highly recommend to anyone who is new to JavaFX and is looking for a quick getting started guide.  The first video provides an introduction to the the application and shows viewers the end result of the exercises that will be demonstrated throughout the series. The second video (Part 1) demonstrates how to get started creating the application from an empty project to build your first JavaFX application in Netbeans 7.1. Instructions include defining the components, creating and inserting image packages, adding the resources you want to make available in your application, setting the clipping area for you image, and setting the style for your image to create a transparent window. The third video (Part 2) demonstrates how to handle events and binding in the sample application using JavaFX. Watch the first 3 episodes now and stay tuned for future installments in this series on the Java YouTube channel.

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  • Enjoy Cloud Odyssey The Oracle Movie

    - by Naresh Persaud
    If you attended Open World you may have seen the promotions for a new movie produced by Oracle. The movie is called Cloud Odyssey and it chronicles the journey of a hero to the cloud. The movie is an animated sci-fi adventure. This movie will be played at Oracle events around the world so you may soon get an invite to attend. Interesting approach to telling the cloud story. For many IT organizations, the journey to the cloud is a major initiative for end users. I am sure Homer would be proud. In fact perhaps if it is successful, I am hopeful we may see a cloud Iliad.  Below, I have embedded a trailer to the movie for your viewing pleasure. While it clearly is not the next Iron Man, it is intriguing. Hope you enjoy.  &amp;amp;amp;amp;amp;lt;span id=&amp;amp;amp;amp;amp;quot;XinhaEditingPostion&amp;amp;amp;amp;amp;quot;&amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;lt;/span&amp;amp;amp;amp;amp;gt;

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  • SDK mouse relative motion, weird results

    - by zaftcoAgeiha
    I have a simple SDL application that tracks the relative change in mouse position But for some reason, the motion.xrel and motion.yrel give back massive numbers! my code: SDL_WM_GrabInput(SDL_GRAB_ON); SDL_ShowCursor(false); while(!quit){ // Draw the scene if (invalidated == 1){ on_render(); invalidated = 0; } // And poll for events SDL_PumpEvents(); SDL_Event event; while ( SDL_PollEvent(&event) ) { switch (event.type) { case SDL_KEYDOWN: case SDL_KEYUP: on_key(event.key); break; case SDL_MOUSEMOTION: std::cerr << event.motion.xrel << ":" << event.motion.yrel << std::endl; invalidated = 1; break; ... and the printed results are ridiculous: 400:300 -11297:1705 -11215:1268 -10969:940 -10314:-43 -9986:-698 -9331:-1681 -9003:-2227 -8593:-2664 -8020:-3538 -7774:-3647 -7365:-4193 -7283:-4302 -7119:0 any idea why?? System is Ubuntu 12 running in virtual box

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  • How to get the level and position of the player from an extern program? [on hold]

    - by user3727174
    I want to write a program that needs the current level and position of the player (primary single player). This should work for potentially every game installed and running on the computer my program is running on. The data I need is basically one integer value for the level (if there are any) and three integer values for x, y and optimal z for the position of the player. In which relation/scale or where the null point is does not matter, because this information is going to be interpreted game dependent, I will use this information to read information out of a database created for the game currently running. Currently I'm using C++, but if there is a better option for Java I´m willing to port my program. My thoughs so far are: make a mod for every game that should be supported, get the position/level from there, write this information to the disk and read it from my program tracking mouse/keyboard events and reconstructing the movement won't work Are there any general APIs for something like this? Any Tool to find this data? Or maybe engines that provide APIs to get this data directly from the game?

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  • Alternative to google map api, so that I can use it on a HTTPS/SSL encrypted website.

    - by Zeeshan Rang
    I did find a solution for this on Google map api page, and I made the following changes as mentioned in it. 1.Use Google Maps API for Flash version 1.9a or later. 2.Add the following to your Flash application before the map is instantiated: Security.allowInsecureDomain("maps.googleapis.com"); Ref:http://code.google.com/apis/maps/faq.html#flash_ssl My code looks like this, after the changes: <mx:TitleWindow verticalAlign="middle" horizontalAlign="center" xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:maps="com.google.maps.*" width="1000" height="600" layout="absolute" backgroundAlpha="0" borderAlpha="0" borderThickness="0" showCloseButton="true" close="PopUpManager.removePopUp(this);"> <mx:VBox width="70%" height="100%" > <maps:Map id="map" key="ABQIAAAA0L1JEoR6rWjh-BBQnLMtMBSVuZ5VlaqlIqiYPFMK_I5M2UTmHhSq_BJxLHiYcTDW9RxSF6HewNY7uA" mapevent_mapready="onMapReady(event)" width="100%" height="100%" /> </mx:VBox> <mx:Script> <![CDATA[ //import flashx.textLayout.formats.Direction; import mx.effects.AddItemAction; //import flashx.textLayout.factory.TruncationOptions; import mx.controls.Alert; import mx.managers.PopUpManager; import mx.rpc.events.ResultEvent; import com.adobe.serialization.json.JSON; import flash.events.Event; import com.google.maps.*; import com.google.maps.overlays.*; import com.google.maps.services.*; import com.google.maps.controls.ZoomControl; import com.google.maps.controls.PositionControl; import com.google.maps.controls.MapTypeControl; import com.google.maps.services.ClientGeocoderOptions; import com.google.maps.LatLng; import com.google.maps.Map; import com.google.maps.MapEvent; import com.google.maps.MapMouseEvent; import com.google.maps.MapType; import com.google.maps.services.ClientGeocoder; import com.google.maps.services.GeocodingEvent; import com.google.maps.overlays.Marker; import com.google.maps.overlays.MarkerOptions; import com.google.maps.InfoWindowOptions; private function onMapReady(event:MapEvent):void { Security.allowInsecureDomain("maps.googleapis.com"); map.setCenter(new LatLng(41.651505,-72.094455), 13, MapType.NORMAL_MAP_TYPE); map.addControl(new ZoomControl()); map.addControl(new PositionControl()); map.addControl(new MapTypeControl()); map.enableScrollWheelZoom(); map.enableContinuousZoom(); } ]]> </mx:Script> </mx:TitleWindow> But i still get the following error using this: The requested URL /mapsapi/publicapi?file=flashapi&url=https%3A%2F%2Fvirtual.c7beta.com%2Findex_cloud.swf&key=ABQIAAAA0L1JEoR6rWjh-BBQnLMtMBTW_Qkp6J0z76Etz3qzo8Hg3HdUQhSnD6lqp53NB0UrBmg5Xm2DlazWqA&v=1.18&flc=xt was not found on this server. Any suggestions to what am I doing wrong here, what should i do to make this work. Regards zee

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  • Silverlight 3.0 Custom Cursor in Chart

    - by Wonko the Sane
    Hello All, I'm probably overlooking something that will be obvious when I see the solution, but for now... I am attempting to use a custom cursor inside the chart area of a Toolkit chart. I have created a ControlTemplate for the chart, and a grid to contain the cursors. I show/hide the cursors, and attempt to move the containing Grid, using various Mouse events. The cursor is being displayed at the correct times, but I cannot get it to move to the correct position. Here is the ControlTemplate (the funky colors are just attempts to confirm what the different pieces of the template pertain to): <dataVisTK:Title Content="{TemplateBinding Title}" Style="{TemplateBinding TitleStyle}"/> <Grid Grid.Row="1"> <!-- Remove the Legend --> <!--<dataVisTK:Legend x:Name="Legend" Title="{TemplateBinding LegendTitle}" Style="{TemplateBinding LegendStyle}" Grid.Column="1"/>--> <chartingPrimitivesTK:EdgePanel x:Name="ChartArea" Background="#EDAEAE" Style="{TemplateBinding ChartAreaStyle}" Grid.Column="0"> <Grid Canvas.ZIndex="-1" Background="#2008AE" Style="{TemplateBinding PlotAreaStyle}"> </Grid> <Border Canvas.ZIndex="1" BorderBrush="#FF250010" BorderThickness="3" /> <Grid x:Name="gridHandCursors" Canvas.ZIndex="5" Width="32" Height="32" Visibility="Collapsed"> <Image x:Name="cursorGrab" Width="32" Source="Resources/grab.png" /> <Image x:Name="cursorGrabbing" Width="32" Source="Resources/grabbing.png" Visibility="Collapsed"/> </Grid> </chartingPrimitivesTK:EdgePanel> </Grid> </Grid> </Border> and here are the mouse events (in particular, the MouseMove): void TimelineChart_Loaded(object sender, RoutedEventArgs e) { chartTimeline.UpdateLayout(); List<FrameworkElement> chartChildren = GetLogicalChildrenBreadthFirst(chartTimeline).ToList(); mChartArea = chartChildren.Where(element => element.Name.Equals("ChartArea")).FirstOrDefault() as Panel; if (mChartArea != null) { grabCursor = chartChildren.Where(element => element.Name.Equals("cursorGrab")).FirstOrDefault() as Image; grabbingCursor = chartChildren.Where(element => element.Name.Equals("cursorGrabbing")).FirstOrDefault() as Image; mGridHandCursors = chartChildren.Where(element => element.Name.Equals("gridHandCursors")).FirstOrDefault() as Grid; mChartArea.Cursor = Cursors.None; mChartArea.MouseMove += new MouseEventHandler(mChartArea_MouseMove); mChartArea.MouseLeftButtonDown += new MouseButtonEventHandler(mChartArea_MouseLeftButtonDown); mChartArea.MouseLeftButtonUp += new MouseButtonEventHandler(mChartArea_MouseLeftButtonUp); if (mGridHandCursors != null) { mChartArea.MouseEnter += (s, e2) => mGridHandCursors.Visibility = Visibility.Visible; mChartArea.MouseLeave += (s, e2) => mGridHandCursors.Visibility = Visibility.Collapsed; } } } void mChartArea_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) { if (grabCursor != null) grabCursor.Visibility = Visibility.Visible; if (grabbingCursor != null) grabbingCursor.Visibility = Visibility.Collapsed; } void mChartArea_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { if (grabCursor != null) grabCursor.Visibility = Visibility.Collapsed; if (grabbingCursor != null) grabbingCursor.Visibility = Visibility.Visible; } void mChartArea_MouseMove(object sender, MouseEventArgs e) { if (mGridHandCursors != null) { Point pt = e.GetPosition(null); mGridHandCursors.SetValue(Canvas.LeftProperty, pt.X); mGridHandCursors.SetValue(Canvas.TopProperty, pt.Y); } } Any help past this roadblock would be greatly appreciated! Thanks, wTs

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  • Flex 4, chart, Error 1009

    - by Stephane
    Hello, I am new to flex development and I am stuck with this error TypeError: Error #1009: Cannot access a property or method of a null object reference. at mx.charts.series::LineSeries/findDataPoints()[E:\dev\4.0.0\frameworks\projects\datavisualization\src\mx\charts\series\LineSeries.as:1460] at mx.charts.chartClasses::ChartBase/findDataPoints()[E:\dev\4.0.0\frameworks\projects\datavisualization\src\mx\charts\chartClasses\ChartBase.as:2202] at mx.charts.chartClasses::ChartBase/mouseMoveHandler()[E:\dev\4.0.0\frameworks\projects\datavisualization\src\mx\charts\chartClasses\ChartBase.as:4882] I try to create a chart where I can move the points with the mouse I notice that the error doesn't occur if I move the point very slowly I have try to use the debugger and pint some debug every where without success All the behaviours were ok until I had the modifyData Please let me know if you have some experience with this kind of error I will appreciate any help. Is it also possible to remove the error throwing because after that the error occur if I click the dismiss all error button then the component work great there is the simple code of the chart <fx:Declarations> </fx:Declarations> <fx:Script> <![CDATA[ import mx.charts.HitData; import mx.charts.events.ChartEvent; import mx.charts.events.ChartItemEvent; import mx.collections.ArrayCollection; [Bindable] private var selectItem:Object; [Bindable] private var chartMouseY:int; [Bindable] private var hitData:Boolean=false; [Bindable] private var profitPeriods:ArrayCollection = new ArrayCollection( [ { period: "Qtr1 2006", profit: 32 }, { period: "Qtr2 2006", profit: 47 }, { period: "Qtr3 2006", profit: 62 }, { period: "Qtr4 2006", profit: 35 }, { period: "Qtr1 2007", profit: 25 }, { period: "Qtr2 2007", profit: 55 } ]); public function chartMouseUp(e:MouseEvent):void{ if(hitData){ hitData = false; } } private function chartMouseMove(e:MouseEvent):void { if(hitData){ var p:Point = new Point(linechart.mouseX,linechart.mouseY); var d:Array = linechart.localToData(p); chartMouseY=d[1]; modifyData(); } } public function modifyData():void { var idx:int = profitPeriods.getItemIndex(selectItem); var item:Object = profitPeriods.getItemAt(idx); item.profit = chartMouseY; profitPeriods.setItemAt(item,idx); } public function chartMouseDown(e:MouseEvent):void{ if(!hitData){ var hda:Array = linechart.findDataPoints(e.currentTarget.mouseX, e.currentTarget.mouseY); if (hda[0]) { selectItem = hda[0].item; hitData = true; } } } ]]> </fx:Script> <s:layout> <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle" /> </s:layout> <s:Panel title="LineChart Control" > <s:VGroup > <s:HGroup> <mx:LineChart id="linechart" color="0x323232" height="500" width="377" mouseDown="chartMouseDown(event)" mouseMove="chartMouseMove(event)" mouseUp="chartMouseUp(event)" showDataTips="true" dataProvider="{profitPeriods}" > <mx:horizontalAxis> <mx:CategoryAxis categoryField="period"/> </mx:horizontalAxis> <mx:series> <mx:LineSeries yField="profit" form="segment" displayName="Profit"/> </mx:series> </mx:LineChart> <mx:Legend dataProvider="{linechart}" color="0x323232"/> </s:HGroup> <mx:Form> <mx:TextArea id="DEBUG" height="200" width="300"/> </mx:Form> </s:VGroup> </s:Panel> UPDATE 30/2010 : the null object is _renderData.filteredCache from the chartline the code call before error is the default mouseMoveHandler of chartBase to chartline. Is it possible to remove it ? or provide a filteredCache

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  • How do I stop a datagrid's first-row itemRenderer from instantiating/adding/initializing/etc twice?

    - by Michael Prescott
    In a Flex DataGrid's first row, the itemRenderer will initialize twice. Tracing the results reveals that the flex framework is possibly creating two instances of the first row's itemRenderer. In a more complex application, where the itemRenderer contains a data-bound ColorPicker, we're seeing an infinite loop occur because of this problem. Only the first row's itemRenderer is initialized twice. Is there a way to override flex's behavior and stop this from occurring? The following code demonstrates the problem: Main Application: <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="on_initialize(event);"> <mx:Script> <![CDATA[ /** * This experiment shows how the first row's itemrenderer is instantiated/added/initialized twice. * We've never even noticed this before we found that a data-bound ColorPicker enters a infinite * loop when it is within an itemRenderer. */ import mx.collections.ArrayCollection; import mx.events.FlexEvent; private var dg_array:Array; private var dg_arrayCollection:ArrayCollection; private function on_initialize(event:FlexEvent):void { dg_array = new Array(); dg_arrayCollection = new ArrayCollection(); dg_arrayCollection.addItem("item 1"); dg_arrayCollection.addItem("item 2"); dg.dataProvider = dg_arrayCollection; } ]]> </mx:Script> <mx:DataGrid id="dg" width="100%" height="100%" rowCount="5"> <mx:columns> <mx:DataGridColumn headerText="Name" itemRenderer="SimpleItemRenderer"/> </mx:columns> </mx:DataGrid> </mx:Application> SimpleItemRenderer: <?xml version="1.0" encoding="utf-8"?> <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300" initialize="//on_initialize(event);"> <mx:Script> <![CDATA[ import mx.events.FlexEvent; [Bindable] override public function set data(value:Object):void { _data = value; } override public function get data():Object { return _data; } private var _data:Object; private function on_initialize_textInput(event:FlexEvent):void { trace("initialize:event.target="+event.target+", " + _data); // runs twice, for the first item only } private function on_creationComplete_textInput(event:FlexEvent):void { trace("creationComplete:event.target="+event.target+", " + _data); // runs twice, for the first item only } ]]> </mx:Script> <mx:TextInput text="{data}" id="textInput" initialize="on_initialize_textInput(event);" creationComplete="on_creationComplete_textInput(event);"/> </mx:Canvas> Abbreviated Output: initialize:event.target=ItemRenderers0.dg...SimpleItemRenderer12.textInput, null initialize:event.target=ItemRenderers0.dg...SimpleItemRenderer24.textInput, null creationComplete:event.target=ItemRenderers0.dg...SimpleItemRenderer24.textInput, item 1 initialize:event.target=ItemRenderers0.dg...SimpleItemRenderer29.textInput, null creationComplete:event.target=ItemRenderers0.dg...SimpleItemRenderer29.textInput, item 2 creationComplete:event.target=ItemRenderers0.dg...SimpleItemRenderer12.textInput, item 1

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  • C++ custom exceptions: run time performance and passing exceptions from C++ to C

    - by skyeagle
    I am writing a custom C++ exception class (so I can pass exceptions occuring in C++ to another language via a C API). My initial plan of attack was to proceed as follows: //C++ myClass { public: myClass(); ~myClass(); void foo() // throws myException int foo(const int i, const bool b) // throws myException } * myClassPtr; // C API #ifdef __cplusplus extern "C" { #endif myClassPtr MyClass_New(); void MyClass_Destroy(myClassPtr p); void MyClass_Foo(myClassPtr p); int MyClass_FooBar(myClassPtr p, int i, bool b); #ifdef __cplusplus }; #endif I need a way to be able to pass exceptions thrown in the C++ code to the C side. The information I want to pass to the C side is the following: (a). What (b). Where (c). Simple Stack Trace (just the sequence of error messages in order they occured, no debugging info etc) I want to modify my C API, so that the API functions take a pointer to a struct ExceptionInfo, which will contain any exception info (if an exception occured) before consuming the results of the invocation. This raises two questions: Question 1 1. Implementation of each of the C++ methods exposed in the C API needs to be enclosed in a try/catch statement. The performance implications for this seem quite serious (according to this article): "It is a mistake (with high runtime cost) to use C++ exception handling for events that occur frequently, or for events that are handled near the point of detection." At the same time, I remember reading somewhere in my C++ days, that all though exception handling is expensive, it only becmes expensive when an exception actually occurs. So, which is correct?. what to do?. Is there an alternative way that I can trap errors safely and pass the resulting error info to the C API?. Or is this a minor consideration (the article after all, is quite old, and hardware have improved a bit since then). Question 2 I wuld like to modify the exception class given in that article, so that it contains a simple stack trace, and I need some help doing that. Again, in order to make the exception class 'lightweight', I think its a good idea not to include any STL classes, like string or vector (good idea/bad idea?). Which potentially leaves me with a fixed length C string (char*) which will be stack allocated. So I can maybe just keep appending messages (delimted by a unique separator [up to maximum length of buffer])... Its been a while since I did any serious C++ coding, and I will be grateful for the help. BTW, this is what I have come up with so far (I am intentionally, not deriving from std::exception because of the performance reasons mentioned in the article, and I am instead, throwing an integral exception (based on an exception enumeration): class fast_exception { public: fast_exception(int what, char const* file=0, int line=0) : what_(what), line_(line), file_(file) {/*empty*/} int what() const { return what_; } int line() const { return line_; } char const* file() const { return file_; } private: int what_; int line_; char const[MAX_BUFFER_SIZE] file_; }

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  • java.lang.RuntimeException: Unable to start activity ComponentInfo cannot be cast to android.widget.ZoomControls

    - by Hwl
    I'm new to android development, hope you all can help me. I got this androidVNC viewer source code from internet. When i'm running the androidVNC application in the emulator, it will exit automatically then i get following errors in LogCat. Can anyone one help me? Thanks. FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activity ComponentInfo{android.androidVNC/android.androidVNC.VncCanvasActivity}: java.lang.ClassCastException: com.antlersoft.android.zoomer.ZoomControls cannot be cast to android.widget.ZoomControls at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1955) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980) at android.app.ActivityThread.access$600(ActivityThread.java:122) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4340) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.ClassCastException: com.antlersoft.android.zoomer.ZoomControls cannot be cast to android.widget.ZoomControls at android.androidVNC.VncCanvasActivity.onCreate(VncCanvasActivity.java:585) at android.app.Activity.performCreate(Activity.java:4465) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919) ... 11 more This is the ZoomControls java file: package com.antlersoft.android.zoomer; import android.content.Context; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.animation.AlphaAnimation; import android.widget.ImageButton; import android.widget.LinearLayout; import android.widget.ZoomButton; public class ZoomControls extends LinearLayout { private final ZoomButton mZoomIn; private final ZoomButton mZoomOut; private final ImageButton mZoomKeyboard; public ZoomControls(Context context) { this(context, null); } public ZoomControls(Context context, AttributeSet attrs) { super(context, attrs); setFocusable(false); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); inflater.inflate(R.layout.zoom_controls, this, // we are the parent true); mZoomIn = (ZoomButton) findViewById(R.id.zoomIn); mZoomOut = (ZoomButton) findViewById(R.id.zoomOut); mZoomKeyboard = (ImageButton) findViewById(R.id.zoomKeys); } public void setOnZoomInClickListener(OnClickListener listener) { mZoomIn.setOnClickListener(listener); } public void setOnZoomOutClickListener(OnClickListener listener) { mZoomOut.setOnClickListener(listener); } public void setOnZoomKeyboardClickListener(OnClickListener listener) { mZoomKeyboard.setOnClickListener(listener); } /* * Sets how fast you get zoom events when the user holds down the * zoom in/out buttons. */ public void setZoomSpeed(long speed) { mZoomIn.setZoomSpeed(speed); mZoomOut.setZoomSpeed(speed); } @Override public boolean onTouchEvent(MotionEvent event) { /* Consume all touch events so they don't get dispatched to the view * beneath this view. */ return true; } public void show() { fade(View.VISIBLE, 0.0f, 1.0f); } public void hide() { fade(View.GONE, 1.0f, 0.0f); } private void fade(int visibility, float startAlpha, float endAlpha) { AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); anim.setDuration(500); startAnimation(anim); setVisibility(visibility); } public void setIsZoomInEnabled(boolean isEnabled) { mZoomIn.setEnabled(isEnabled); } public void setIsZoomOutEnabled(boolean isEnabled) { mZoomOut.setEnabled(isEnabled); } @Override public boolean hasFocus() { return mZoomIn.hasFocus() || mZoomOut.hasFocus(); } } This is the zoom_controls XML file: <merge xmlns:android="http://schemas.android.com/apk/res/android"> <ZoomButton android:id="@+id/zoomOut" android:background="@drawable/btn_zoom_down" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ImageButton android:id="@+id/zoomKeys" android:background="@android:drawable/ic_dialog_dialer" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ZoomButton android:id="@+id/zoomIn" android:background="@drawable/btn_zoom_up" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </merge>

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  • Get User SID From Logon ID (Windows XP and Up)

    - by Dave Ruske
    I have a Windows service that needs to access registry hives under HKEY_USERS when users log on, either locally or via Terminal Server. I'm using a WMI query on win32_logonsession to receive events when users log on, and one of the properties I get from that query is a LogonId. To figure out which registry hive I need to access, now, I need the users's SID, which is used as a registry key name beneath HKEY_USERS. In most cases, I can get this by doing a RelatedObjectQuery like so (in C#): RelatedObjectQuery relatedQuery = new RelatedObjectQuery( "associators of {Win32_LogonSession.LogonId='" + logonID + "'} WHERE AssocClass=Win32_LoggedOnUser Role=Dependent" ); where "logonID" is the logon session ID from the session query. Running the RelatedObjectQuery will generally give me a SID property that contains exactly what I need. There are two issues I have with this. First and most importantly, the RelatedObjectQuery will not return any results for a domain user that logs in with cached credentials, disconnected from the domain. Second, I'm not pleased with the performance of this RelatedObjectQuery --- it can take up to several seconds to execute. Here's a quick and dirty command line program I threw together to experiment with the queries. Rather than setting up to receive events, this just enumerates the users on the local machine: using System; using System.Collections.Generic; using System.Text; using System.Management; namespace EnumUsersTest { class Program { static void Main( string[] args ) { ManagementScope scope = new ManagementScope( "\\\\.\\root\\cimv2" ); string queryString = "select * from win32_logonsession"; // for all sessions //string queryString = "select * from win32_logonsession where logontype = 2"; // for local interactive sessions only ManagementObjectSearcher sessionQuery = new ManagementObjectSearcher( scope, new SelectQuery( queryString ) ); ManagementObjectCollection logonSessions = sessionQuery.Get(); foreach ( ManagementObject logonSession in logonSessions ) { string logonID = logonSession["LogonId"].ToString(); Console.WriteLine( "=== {0}, type {1} ===", logonID, logonSession["LogonType"].ToString() ); RelatedObjectQuery relatedQuery = new RelatedObjectQuery( "associators of {Win32_LogonSession.LogonId='" + logonID + "'} WHERE AssocClass=Win32_LoggedOnUser Role=Dependent" ); ManagementObjectSearcher userQuery = new ManagementObjectSearcher( scope, relatedQuery ); ManagementObjectCollection users = userQuery.Get(); foreach ( ManagementObject user in users ) { PrintProperties( user.Properties ); } } Console.WriteLine( "\nDone! Press a key to exit..." ); Console.ReadKey( true ); } private static void PrintProperty( PropertyData pd ) { string value = "null"; string valueType = "n/a"; if ( null == pd.Value ) value = "null"; if ( pd.Value != null ) { value = pd.Value.ToString(); valueType = pd.Value.GetType().ToString(); } Console.WriteLine( " \"{0}\" = ({1}) \"{2}\"", pd.Name, valueType, value ); } private static void PrintProperties( PropertyDataCollection properties ) { foreach ( PropertyData pd in properties ) { PrintProperty( pd ); } } } } So... is there way to quickly and reliably obtain the user SID given the information I retrieve from WMI, or should I be looking at using something like SENS instead?

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  • How can I read the verbose output from a Cmdlet in C# using Exchange Powershell

    - by mrkeith
    Environment: Exchange 2007 sp3 (2003 sp2 mixed mode) Visual Studio 2008, .Net 3.5 Hello, I'm working with an Exchange powershell move-mailbox cmdlet and have noted when I do so from the Exchange Management shell (using the Verbose switch) there is a ton of real-time information provided. To provide a little context, I'm attempting to create a UI application that moves mailboxes similarly to the Exchange Management Console but desire to support an input file and specific server/database destinations for each entry (and threading). Here's roughly what I have at present but I'm not sure if there is an event I need to register for or what... And to be clear, I desire to get this information in real-time so I may update my UI to reflect what's occurring in the move sequence for the appropriate user (pretty much like the native functionality offered in the Management Console). And in case you are wondering, the reason why I'm not content with the Management Console functionality is, I have an algorithm which I'm using to balance users depending on storage limit, Blackberry use, journaling, exception mailbox size etc which demands user be mapped to specific locations... and I do not desire to create many/several move groups for each common destination or to hunt for lists of users individually through the management console UI. I can not seem to find any good documentation or examples of how to tie into reading the verbose messages that are provided within the console using C# (I see value in being able to read this kind of information in many different scenarios). I've explored the Invoke and InvokeAsync methods and the StateChanged & DataReady events but none of these seem to provide the information (verbose comments) that I'm after. Any direction or examples that can be provided will be very appreciated! A code sample which is little more than how I would ordinarily call any other powershell command follows: // config to use ExMgmt shell, create runspace and open it RunspaceConfiguration rsConfig = RunspaceConfiguration.Create(); PSSnapInException snapInException = null; PSSnapInInfo info = rsConfig.AddPSSnapIn("Microsoft.Exchange.Management.PowerShell.Admin", out snapInException); if (snapInException != null) throw snapInException; Runspace runspace = RunspaceFactory.CreateRunspace(rsConfig); try { runspace.Open(); // create a pipeline and feed script text Pipeline pipeline = runspace.CreatePipeline(); string targetDatabase = @"myServer\myStorageGroup\myDB"; string mbxOwner = "[email protected]"; Command myMoveMailbox = new Command("Move-Mailbox", false, false); myMoveMailbox.Parameters.Add("Identity", mbxOwner); myMoveMailbox.Parameters.Add("TargetDatabase", targetDatabase); myMoveMailbox.Parameters.Add("Verbose"); myMoveMailbox.Parameters.Add("ValidateOnly"); myMoveMailbox.Parameters.Add("Confirm", false); pipeline.Commands.Add(myMoveMailbox); System.Collections.ObjectModel.Collection output = null; // these next few lines that are commented out are where I've tried // registering for events and calling asynchronously but this doesn't // seem to get me anywhere closer // //pipeline.StateChanged += new EventHandler(pipeline_StateChanged); //pipeline.Output.DataReady += new EventHandler(Output_DataReady); //pipeline.InvokeAsync(); //pipeline.Input.Close(); //return; tried these variations that are commented out but none seem to be useful output = pipeline.Invoke(); // Check for errors in the pipeline and throw an exception if necessary if (pipeline.Error != null && pipeline.Error.Count 0) { StringBuilder pipelineError = new StringBuilder(); pipelineError.AppendFormat("Error calling Test() Cmdlet. "); foreach (object item in pipeline.Error.ReadToEnd()) pipelineError.AppendFormat("{0}\n", item.ToString()); throw new Exception(pipelineError.ToString()); } foreach (PSObject psObject in output) { // blah, blah, blah // this is normally where I would read details about a particular PS command // but really pertains to a command once it finishes and has nothing to do with // the verbose messages that I'm after... since this part of the methods pertains // to the after-effects of a command having run, I'm suspecting I need to look to // the asynch invoke method but am not certain or knowing how. } } finally { runspace.Close(); } Thanks! Keith

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  • receiving error #1009 in flash cs4 actionscript3

    - by Leah
    I'm having a weird issue where my buttons will work initially and direct me to an appropriate page, but when i go back to that page and try to use the buttons the roll-overs work but none of the buttons direct to a different page. This is the actionscript on the initial page with the buttons. If I choose any of these buttons they work. For example the profile_btn will take me to the go_to_page" stop(); import flash.events.MouseEvent; //button instancese listed below profile_btn.addEventListener(MouseEvent.CLICK, aClick); function aClick(event:MouseEvent):void{ gotoAndPlay("go_to_page"); } color_btn.addEventListener(MouseEvent.CLICK, cClick); function cClick(event:MouseEvent):void{ gotoAndPlay("color_page"); } drawing_btn.addEventListener(MouseEvent.CLICK, dClick); function dClick(event:MouseEvent):void{ gotoAndPlay("drawing_page"); } letsgo_btn.addEventListener(MouseEvent.CLICK, fClick); function fClick(event:MouseEvent):void{ gotoAndPlay("home_page"); } //go to flash fish animation digital_btn.addEventListener(MouseEvent.CLICK,onMouseClick2); function onMouseClick2(e:MouseEvent):void { var request:URLRequest=new URLRequest("aquarium2.swf"); navigateToURL(request,"blank");} //go to resume document resume_btn.addEventListener(MouseEvent.CLICK,onMouseClick3); function onMouseClick3(e:MouseEvent):void { var request:URLRequest=new URLRequest("LeahHonseyResume.pdf"); navigateToURL(request,"blank"); once at the go_to_page, it plays through a motion tween and ends up at the profile_page. from this page, there is a home_btn. Here is the actionscript for the profile_page. stop(); home_btn.addEventListener(MouseEvent.CLICK, gClick); function gClick(event:MouseEvent):void{ gotoAndPlay("return_frame"); } But when I click on the home_btn I get an output: TypeError: Error #1009: Cannot access a property or method of a null object reference. at flash7_fla::MainTimeline/frame38() It does take me to the correct page, but none of the button then on this page are working. the actionscript for the return_frame page is: stop(); import flash.events.MouseEvent; //button instances listed below profile_btn.addEventListener(MouseEvent.CLICK, hClick); function hClick(event:MouseEvent):void{ gotoAndPlay("profile_page"); } color_btn.addEventListener(MouseEvent.CLICK, iClick); function iClick(event:MouseEvent):void{ gotoAndPlay("color_page"); } drawing_btn.addEventListener(MouseEvent.CLICK, jClick); function jClick(event:MouseEvent):void{ gotoAndPlay("drawing_page"); } letsgo_btn.addEventListener(MouseEvent.CLICK, kClick); function kClick(event:MouseEvent):void{ gotoAndPlay("home_page"); } //go to flash fish animation digital_btn.addEventListener(MouseEvent.CLICK,onMouseClick4); function onMouseClick4(e:MouseEvent):void { var request:URLRequest=new URLRequest("aquarium2.swf"); navigateToURL(request,"blank");} //go to resume document resume_btn.addEventListener(MouseEvent.CLICK,onMouseClick5); function onMouseClick5(e:MouseEvent):void { var request:URLRequest=new URLRequest("LeahHonseyResume.pdf"); navigateToURL(request,"blank");} Can anyone help me figure out why this script is not working? Thank you. I am a beginner flash user, and am trying to build my portfolio site for a homework assignment on Monday. Leah

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  • skips nines in counter object, AS3

    - by VideoDnd
    It's not that noticeable at first, but my counter skips over to zero and ignores the nines. How can I get my counter to not skip over the nines? my FLA import flash.display.Sprite; import flash.events.Event; import flash.utils.Timer; import flash.events.TimerEvent; var timer:Timer; var count:int = 0; var fcount:int = 0; var numbers:NumbersView; trace("-----new NumberDocument created"); timer = new Timer(10); timer.addEventListener(TimerEvent.TIMER, incrementCounter); timer.start(); numbers = new NumbersView(); addChild(numbers); addEventListener(Event.ENTER_FRAME, enterFrameHandler); //addEventListener(Event.ADDED_TO_STAGE, traceMeOut); function incrementCounter(event:TimerEvent) { count++; fcount=int(count*count/1000); } function formatCount(i:int):String { return ("000000000" + i).substr(-9, 9); } function enterFrameHandler(e:Event):void { numbers.setTime(formatCount(fcount)); } function traceMeOut() { trace("-----Im here on stage!"); } NumbersView.as //NumbersView.as - Your Document Class package { import flash.display.MovieClip; public class NumbersView extends MovieClip { private var _listItems:Array; private const numHeight:int = 120; public function NumbersView() { _listItems = new Array(); var item:NumberImage; for (var i:Number = 0; i < 9; i++) { item = new NumberImage(); addChild(item); item.x = i * item.width; _listItems.push(item); } setTime('123456789'); } public function setTime($number:String):void { var nums:Array = $number.split(""); trace(nums); for (var i:Number = 0; i < nums.length; i++) { _listItems[i].start( int(nums[i]) ); } } } } Variation of NumbersView.as with Tweener //...SNIPPET public function setTime($number:String):void { var nums:Array = $number.split(""); for (var i:Number = 0; i < nums.length; i++) { if (nums[i] == previousNums[i]) continue; Tweener.removeTweens(_listItems[i]); var nuNum:int = int(nums[i]); var nuY:int = nuNum == 0 ? 0 : (nuNum - 1) * -numHeight; trace("nuY = " + nuY); trace("cY = " + _listItems[i].y); Tweener.addTween(_listItems[i], { y:nuY, time:0 } ); } previousNums = nums; } Variation of NumbersView.as that doesn't skip 9, but resets from bottom every count //...SNIPPET public function setTime($number:String):void { var nums:Array = $number.split(""); for (var i:Number = 0; i < nums.length; i++) { if (nums[i] == previousNums[i]) continue; Tweener.removeTweens(_listItems[i]); var newY:int = int(nums[i]) * -numHeight; if (_listItems[i].y < 0) _listItems[i].y = numHeight; Tweener.addTween(_listItems[i], { y:newY, time:3 } ); } previousNums = nums; } PUBLIC CLASS extends MovieClip place 'NumbersView.as' in same directory CLASS Library/'right-click' Properties/Class:NumberImage SYMBOL number column 70x1080 numbers 70x120 TWEENER caurina folder in local directory

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  • Error Handling without Exceptions

    - by James
    While searching SO for approaches to error handling related to business rule validation , all I encounter are examples of structured exception handling. MSDN and many other reputable development resources are very clear that exceptions are not to be used to handle routine error cases. They are only to be used for exceptional circumstances and unexpected errors that may occur from improper use by the programmer (but not the user.) In many cases, user errors such as fields that are left blank are common, and things which our program should expect, and therefore are not exceptional and not candidates for use of exceptions. QUOTE: Remember that the use of the term exception in programming has to do with the thinking that an exception should represent an exceptional condition. Exceptional conditions, by their very nature, do not normally occur; so your code should not throw exceptions as part of its everyday operations. Do not throw exceptions to signal commonly occurring events. Consider using alternate methods to communicate to a caller the occurrence of those events and leave the exception throwing for when something truly out of the ordinary happens. For example, proper use: private void DoSomething(string requiredParameter) { if (requiredParameter == null) throw new ArgumentExpcetion("requiredParameter cannot be null"); // Remainder of method body... } Improper use: // Renames item to a name supplied by the user. Name must begin with an "F". public void RenameItem(string newName) { // Items must have names that begin with "F" if (!newName.StartsWith("F")) throw new RenameException("New name must begin with /"F/""); // Remainder of method body... } In the above case, according to best practices, it would have been better to pass the error up to the UI without involving/requiring .NET's exception handling mechanisms. Using the same example above, suppose one were to need to enforce a set of naming rules against items. What approach would be best? Having the method return a enumerated result? RenameResult.Success, RenameResult.TooShort, RenameResult.TooLong, RenameResult.InvalidCharacters, etc. Using an event in a controller class to report to the UI class? The UI calls the controller's RenameItem method, and then handles an AfterRename event that the controller raises and that has rename status as part of the event args? The controlling class directly references and calls a method from the UI class that handles the error, e.g. ReportError(string text). Something else... ? Essentially, I want to know how to perform complex validation in classes that may not be the Form class itself, and pass the errors back to the Form class for display -- but I do not want to involve exception handling where it should not be used (even though it seems much easier!) Based on responses to the question, I feel that I'll have to state the problem in terms that are more concrete: UI = User Interface, BLL = Business Logic Layer (in this case, just a different class) User enters value within UI. UI reports value to BLL. BLL performs routine validation of the value. BLL discovers rule violation. BLL returns rule violation to UI. UI recieves return from BLL and reports error to user. Since it is routine for a user to enter invalid values, exceptions should not be used. What is the right way to do this without exceptions?

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  • Can't remove Enter_Frame and stop TimerEvent

    - by Hwang
    I wanted to remove an ENTER_FRAME object and stopping an TimerEvent when I click on a button, and rerun ENTER_FRAME and TimerEvent when I click on another button. I've tried removeAddEventListener and stop() for the time, but I won't work. Any idea whats the problem here? package{ import flash.display.MovieClip; import flash.display.DisplayObject; import flash.events.Event; import flash.events.TimerEvent; import flash.utils.Timer; public class clockFunction extends MovieClip { private var clock:clockMC=new clockMC(); private var countdownTimer:Timer; //seconds private var secTop1=clock.second.top1.digit; private var secTop2=clock.second.top2.digit; private var secBot1=clock.second.bot1.digit; private var secBot2=clock.second.bot2.digit; private var seconds:Number; private var minutes:Number; private var hours:Number; private var days:Number; public function clockFunction():void { decrease(); addChild(clock); } private function decrease():void { countdownTimer=new Timer(1000); //Adding an event listener to the timer object countdownTimer.addEventListener(TimerEvent.TIMER,updateTime); //Initializing timer object //countdownTimer.start(); } private function updateTime(event:TimerEvent):void { decreasTimerFunction(); clock.second.play(); if (seconds==1) { clock.minute.play(); } if ((minutes==1)&&(seconds==1)) { clock.hour.play(); } if ((hours==1)&&(minutes==1)&&(seconds==1)) { clock.day.play(); } } //Setting it back to its correct time so it won't have number changing in between of flipping issues. private function detect(event:Event):void { //seconds var sec1=seconds; var sec2=seconds-1; if (sec1<10) { sec1="0"+sec1; } if (sec2<10) { sec2="0"+sec2; } if (sec1==00) { sec2=59; } secTop1.text=sec1; secTop2.text=sec2; secBot1.text=sec1; secBot2.text=sec2; } public function startTime():void { addEventListener(Event.ENTER_FRAME,detect); countdownTimer.start(); trace("start"); } public function stopTime():void { countdownTimer.stop(); removeEventListener(Event.ENTER_FRAME,detect); trace("stop"); } private function decreasTimerFunction():void { //Create a date object for Christmas Morning var endTime:Date=new Date(2010,3,26,20,0,0); //Current date object var now:Date=new Date(); // Set the difference between the two date and times in milliseconds var timeDiff:Number=endTime.getTime()-now.getTime(); seconds=Math.floor(timeDiff/1000); minutes=Math.floor(seconds/60); hours=Math.floor(minutes/60); days=Math.floor(hours/24); // Set the remainder of the division vars above hours%=24; minutes%=60; seconds%=60; } } }

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  • Domain Validation in a CQRS architecture

    - by Jupaol
    Basically I want to know if there is a better way to validate my domain entities. This is how I am planning to do it but I would like your opinion The first approach I considered was: class Customer : EntityBase<Customer> { public void ChangeEmail(string email) { if(string.IsNullOrWhitespace(email)) throw new DomainException(“...”); if(!email.IsEmail()) throw new DomainException(); if(email.Contains(“@mailinator.com”)) throw new DomainException(); } } I actually do not like this validation because even when I am encapsulating the validation logic in the correct entity, this is violating the Open/Close principle (Open for extension but Close for modification) and I have found that violating this principle, code maintenance becomes a real pain when the application grows up in complexity. Why? Because domain rules change more often than we would like to admit, and if the rules are hidden and embedded in an entity like this, they are hard to test, hard to read, hard to maintain but the real reason why I do not like this approach is: if the validation rules change, I have to come and edit my domain entity. This has been a really simple example but in RL the validation could be more complex So following the philosophy of Udi Dahan, making roles explicit, and the recommendation from Eric Evans in the blue book, the next try was to implement the specification pattern, something like this class EmailDomainIsAllowedSpecification : IDomainSpecification<Customer> { private INotAllowedEmailDomainsResolver invalidEmailDomainsResolver; public bool IsSatisfiedBy(Customer customer) { return !this.invalidEmailDomainsResolver.GetInvalidEmailDomains().Contains(customer.Email); } } But then I realize that in order to follow this approach I had to mutate my entities first in order to pass the value being valdiated, in this case the email, but mutating them would cause my domain events being fired which I wouldn’t like to happen until the new email is valid So after considering these approaches, I came out with this one, since I am going to implement a CQRS architecture: class EmailDomainIsAllowedValidator : IDomainInvariantValidator<Customer, ChangeEmailCommand> { public void IsValid(Customer entity, ChangeEmailCommand command) { if(!command.Email.HasValidDomain()) throw new DomainException(“...”); } } Well that’s the main idea, the entity is passed to the validator in case we need some value from the entity to perform the validation, the command contains the data coming from the user and since the validators are considered injectable objects they could have external dependencies injected if the validation requires it. Now the dilemma, I am happy with a design like this because my validation is encapsulated in individual objects which brings many advantages: easy unit test, easy to maintain, domain invariants are explicitly expressed using the Ubiquitous Language, easy to extend, validation logic is centralized and validators can be used together to enforce complex domain rules. And even when I know I am placing the validation of my entities outside of them (You could argue a code smell - Anemic Domain) but I think the trade-off is acceptable But there is one thing that I have not figured out how to implement it in a clean way. How should I use this components... Since they will be injected, they won’t fit naturally inside my domain entities, so basically I see two options: Pass the validators to each method of my entity Validate my objects externally (from the command handler) I am not happy with the option 1 so I would explain how I would do it with the option 2 class ChangeEmailCommandHandler : ICommandHandler<ChangeEmailCommand> { public void Execute(ChangeEmailCommand command) { private IEnumerable<IDomainInvariantValidator> validators; // here I would get the validators required for this command injected, and in here I would validate them, something like this using (var t = this.unitOfWork.BeginTransaction()) { var customer = this.unitOfWork.Get<Customer>(command.CustomerId); this.validators.ForEach(x =. x.IsValid(customer, command)); // here I know the command is valid // the call to ChangeEmail will fire domain events as needed customer.ChangeEmail(command.Email); t.Commit(); } } } Well this is it. Can you give me your thoughts about this or share your experiences with Domain entities validation EDIT I think it is not clear from my question, but the real problem is: Hiding the domain rules has serious implications in the future maintainability of the application, and also domain rules change often during the life-cycle of the app. Hence implementing them with this in mind would let us extend them easily. Now imagine in the future a rules engine is implemented, if the rules are encapsulated outside of the domain entities, this change would be easier to implement

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  • Custom event loop and UIKit controls. What extra magic Apple's event loop does?

    - by tequilatango
    Does anyone know or have good links that explain what iPhone's event loop does under the hood? We are using a custom event loop in our OpenGL-based iPhone game framework. It calls our game rendering system, calls presentRenderbuffer and pumps events using CFRunLoopRunInMode. See the code below for details. It works well when we are not using UIKit controls (as a proof, try Facetap, our first released game). However, when using UIKit controls, everything almost works, but not quite. Specifically, scrolling of UIKit controls doesn't work properly. For example, let's consider following scenario. We show UIImagePickerController on top of our own view. UIImagePickerController covers our custom view We also pause our own rendering, but keep on using the custom event loop. As said, everything works, except scrolling. Picking photos works. Drilling down to photo albums works and transition animations are smooth. When trying to scroll photo album view, the view follows your finger. Problem: when scrolling, scrolling stops immediately after you lift your finger. Normally, it continues smoothly based on the speed of your movement, but not when we are using the custom event loop. It seems that iPhone's event loop is doing some magic related to UIKit scrolling that we haven't implemented ourselves. Now, we can get UIKit controls to work just fine and dandy together with our own system by using Apple's event loop and calling our own rendering via NSTimer callbacks. However, I'd still like to understand, what is possibly happening inside iPhone's event loop that is not implemented in our custom event loop. - (void)customEventLoop { OBJC_METHOD; float excess = 0.0f; while(isRunning) { animationInterval = 1.0f / openGLapp->ticks_per_second(); // Calculate the target time to be used in this run of loop float wait = max(0.0, animationInterval - excess); Systemtime target = Systemtime::now().after_seconds(wait); Scope("event loop"); NSAutoreleasePool* pool = [[ NSAutoreleasePool alloc] init]; // Call our own render system and present render buffer [self drawView]; // Pump system events [self handleSystemEvents:target]; [pool release]; excess = target.seconds_to_now(); } } - (void)drawView { OBJC_METHOD; // call our own custom rendering bool bind = openGLapp->app_render(); // bind the buffer to be THE renderbuffer and present its contents if (bind) { opengl::bind_renderbuffer(renderbuffer); [context presentRenderbuffer:GL_RENDERBUFFER_OES]; } } - (void) handleSystemEvents:(Systemtime)target { OBJC_METHOD; SInt32 reason = 0; double time_left = target.seconds_since_now(); if (time_left <= 0.0) { while((reason = CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, TRUE)) == kCFRunLoopRunHandledSource) {} } else { float dt = time_left; while((reason = CFRunLoopRunInMode(kCFRunLoopDefaultMode, dt, FALSE)) == kCFRunLoopRunHandledSource) { double time_left = target.seconds_since_now(); if (time_left <= 0.0) break; dt = (float) time_left; } } }

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  • MovieClip, counter almost working AS3

    - by VideoDnd
    How do I get my counter to work? This was over my director's head. Please include explanation, and feel free to comment. CONFUSION: I'm confused about the MovieClip container in as3. public class NumbersView extends MovieClip, so that seems to be a container. That may not be the problem, but that's where I got lost. CODE http://videodnd.weebly.com/ The working version of this code is fantastic. My code bellow is an attempt at revising it. The source has been adapted from various smart people. It's a work in progress LIBRARY OBJECT 'vertical number column' Name: mc-NumberImage Class: NumberImage OUTPUT ERRORS 'When I uncomment the code" 1023: Incompatible override. NumbersView... 1021: Duplicate function definition. NumbersView... //NUMBER DOCUMENT CLASS //IMPORT import flash.display.Sprite; import flash.events.Event; import flash.utils.Timer; import flash.events.TimerEvent; import flash.display.DisplayObject; import flash.display.MovieClip; import flash.utils.Dictionary; import caurina.transitions.Tweener; //COUNTER var timer:Timer = new Timer(1000); var count:int = 0; var fcount:int = 0; timer.addEventListener(TimerEvent.TIMER, incrementCounter); timer.start(); function incrementCounter(event:TimerEvent) { count++; fcount=int(count*count/1000); } function formatCount(i:int):String { var fraction:int = i % 100; var whole:int = i / 100; return ("000000000" + i).substr(-9, 9); } //------------------------------------------------------------------------ //PROBLEM AREA function enterFrameHandler(e:Event):void { // numbers.setTime(formatCount(fcount)); } var _listItems:Array = new Array(); var previousNums:Array; const numHeight:int = 120; var NumbersView:Sprite = new Sprite(); //var numbers:NumbersView = new NumbersView; //NUMBERSVIEW // function NumbersView($n:int):void { _listItems = new Array(); previousNums = new Array(); var item:NumberImage; var offset:int = _listItems.length; for (var i:Number = 0; i < 9; i++) { item = new NumberImage(); // }//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< //------------------------------------------------------------------------ //PUSH ARRAY addChild(item); item.x = i * item.width; _listItems.push(item); } //TWEENER 'Y SCROLLING' function setTime($number:String):void { var nums:Array = $number.split(""); for (var i:Number = 0; i < nums.length; i++) { if (nums[i] == previousNums[i]) continue; Tweener.removeTweens(_listItems[i]); var newY:int = int(nums[i]) * -numHeight; if (_listItems[i].y < 0) _listItems[i].y = numHeight; Tweener.addTween(_listItems[i], { y:newY, time:3 } ); } previousNums = nums; } D E S C R I P T I O N COUNTER: formatCount needs to get passed to Tweener STAGE: for loop, sets up children to be added to the stage NumbersView becomes item, item array adds children to stage TWEENER: advances the vertical number column every time the count fires adds and removes WHY - Learning - Benifit in simplifying the classes and putting it in one FLA

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