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• Tapestry / JDBC - Storing Date

  - by Ben

  So Im using Tapestry and trying to store a date from a beaneditform into a simple Access database. It wont work, Im getting Null pointer exceptions and I cannot understand why. String onSuccess() { System.out.println("in on success!"); String nextPage = null; try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); connection = DriverManager.getConnection("jdbc:odbc:FYP_Users"); DateFormat df = new SimpleDateFormat("dd/MM/yyyy"); Date ed = occasion.getEventDate(); String reportDate = df.format(ed); statement.executeUpdate("INSERT INTO Events (UserName, EventName, EventDate, EventTime, EventDetails, People, Rating) " + "VALUES ('" + login.getUserName() + "', '" + occasion.getEventName()+ "', '" + reportDate + "', '" + occasion.getEventTime() + "', '" + occasion.getEventDetails() + "', '" + occasion.getPeople() + "', '"+ "1" +"')"); connection.close(); occasion = new Occasion(); //occasion.setUserName(occasion.getUserName()); occasion.setEventName(occasion.getEventName()); occasion.setEventDate(occasion.getEventDate()); occasion.setEventTime(occasion.getEventTime()); occasion.setEventDetails(occasion.getEventDetails()); occasion.setPeople(occasion.getPeople()); //occasion.setRating(occasion.getRating()); nextPage = "UserIndex"; } catch (SQLException e) {e.printStackTrace();} catch (ClassNotFoundException e) {e.printStackTrace();} return nextPage; } Stack trace java.util.Calendar.setTime(Unknown Source) java.text.SimpleDateFormat.format(Unknown Source) java.text.SimpleDateFormat.format(Unknown Source) java.text.DateFormat.format(Unknown Source) myappj.pages.CreateOccasion.onSuccess(CreateOccasion.java:61) myappj.pages.CreateOccasion.dispatchComponentEvent(CreateOccasion.java) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:902) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081) org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl.triggerContextEvent(InternalComponentResourcesImpl.java:263) org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:398) org.apache.tapestry5.corelib.components.Form$onAction$invocation_128ef468876.invokeAdvisedMethod(Form$onAction$invocation_128ef468876.java) org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71) org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37) org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54) org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80) org.apache.tapestry5.corelib.components.Form.onAction(Form.java) org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081) org.apache.tapestry5.internal.services.ComponentEventRequestHandlerImpl.handle(ComponentEventRequestHandlerImpl.java:75) org.apache.tapestry5.internal.services.ImmediateActionRenderResponseFilter.handle(ImmediateActionRenderResponseFilter.java:42) $ComponentEventRequestHandler_128ef45bf4a.handle($ComponentEventRequestHandler_128ef45bf4a.java) org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42) $ComponentEventRequestHandler_128ef45bf4a.handle($ComponentEventRequestHandler_128ef45bf4a.java) org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164) $ComponentEventRequestHandler_128ef45bf4a.handle($ComponentEventRequestHandler_128ef45bf4a.java) $ComponentEventRequestHandler_128ef45bea5.handle($ComponentEventRequestHandler_128ef45bea5.java) org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43) $ComponentRequestHandler_128ef45be99.handleComponentEvent($ComponentRequestHandler_128ef45be99.java) org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46) $Dispatcher_128ef45be9b.dispatch($Dispatcher_128ef45be9b.java) $Dispatcher_128ef45be92.dispatch($Dispatcher_128ef45be92.java) org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245) org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) myappj.services.AppModule$1.service(AppModule.java:90) $RequestFilter_128ef45be8e.service($RequestFilter_128ef45be8e.java) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90) org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81) org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85) org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) $RequestHandler_128ef45be88.service($RequestHandler_128ef45be88.java) org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197) org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53) $HttpServletRequestHandler_128ef45be8a.service($HttpServletRequestHandler_128ef45be8a.java) org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62) $HttpServletRequestFilter_128ef45be87.service($HttpServletRequestFilter_128ef45be87.java) $HttpServletRequestHandler_128ef45be8a.service($HttpServletRequestHandler_128ef45be8a.java) org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726) $HttpServletRequestHandler_128ef45be8a.service($HttpServletRequestHandler_128ef45be8a.java) $HttpServletRequestHandler_128ef45be85.service($HttpServletRequestHandler_128ef45be85.java) org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127) org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:722) org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:404) org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) org.mortbay.jetty.Server.handle(Server.java:324) org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842) org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648) org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395) org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)

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• Wordpress: Problem installing on dedicated windows server 2008/IIS7

  - by Niels Bosma

  I'm having trouble with installing Wordpress on a dedicated Microsoft Windows Web Server 2008 R2. I've installed Wordpress Version 2.9.2 from Web platform installer 3.0. After installation when I try to access wordpress, either from ~/index.php or ~/wp-admin/install.php I get the error: HTTP Error 500.0 - Internal Server Error File monitoring is enabled for a file which could not be found Modul: FastCgiModule Notification: ExecuteRequestHandler Handler: PHP52_via_FastCGI Error Code: 0x80070003 I have both .Net 2.0 and .Net 4.0 installed. Adding a "phpinfo.php" gives me the same error. The application pool in IIS7 that's used for the website is: "No Managed Code" and set to "Integrated" in "Managed Pipeline Mode". I've tried to reboot the machine. What's more can I try?

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• uploadify and each file description

  - by kusanagi

  i want to upload many files and set to each file a description. i have such code <div> <textarea cols="60" id="descriptions" name="descriptions" rows="10"> </textarea> </div> <div id="fileQueue"> </div> <div> <input type="file" name="attach" id="attach" /> </div> <p> <input type="button" id="submit" value="????????" class="bluebutton" /><br /> <a href="javascript:jQuery('#attach').uploadifyClearQueue()">???????? ????????</a> </p> <script type="text/javascript"> var description = ""; var mas; var i = 0; $(document).ready(function() { $("#attach").uploadify({ 'uploader': '/uploadify/uploadify.swf', 'script': '/uploadify/upload.ashx', 'cancelImg': '/uploadify/cancel.png', 'queueID': 'fileQueue', 'multi': true, 'onOpen': function(event, queueID, fileObj) { if (i < mas.length) { description = mas[i++]; } }, 'onComplete': function(event, data) { description = ""; } }); $("#submit").click(function() { i = 0; mas = $("#descriptions").val().split('\n'); $('#attach').uploadifySettings("scriptData", { 'description': description }); $('#attach').uploadifyUpload(); }); }); </script> so idea- i put short description into textarea descriptions, then i make array and try to put one item of array to apload script, but it not work. description is null. any ideas?

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• log4Net EventlogAppender does not work for Asp.Net 2.0 WebSite?

  - by Amitabh

  I have configured log4Net EventLogAppender for Asp.Net 2.0. However it does not log anything. I have following in my Web.Config. <log4net> <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender"> <param name="LogName" value="Test Log" /> <param name="ApplicationName" value="Test-Web" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" /> </layout> </appender> <root> <priority value="ERROR"/> <appender-ref ref="EventLogAppender"/> </root> <logger name="NHibernate"> <level value="ERROR" /> <appender-ref ref="EventLogAppender" /> </logger> </log4net> I already have Test-Log Event Log created and AspNet user has permission on the Event Log registry entry. I also have log4Net configured in Global.asax Application_Start. log4net.Config.XmlConfigurator.Configure();

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• Python PyQt Timer Firmata

  - by George Cullins

  Hello. I am pretty new to python and working with firmata I am trying to play around with an arduino . Here is what I want to happen: Set arduino up with an LED as a digital out Set potentiometer to analog 0 Set PyQt timer up to update potentiometer position in application Set a threshold in PyQt to turn LED on (Analog in has 1024bit resolution, so say 800 as the threshold) I am using this firmata library : Link Here is the code that I am having trouble with: import sys from PyQt4 import QtCore, QtGui from firmata import * # Arduino setup self.a = Arduino('COM3') self.a.pin_mode(13, firmata.OUTPUT) # Create timer self.appTimer = QtCore.QTimer(self) self.appTimer.start(100) self.appTimer.event(self.updateAppTimer()) def updateAppTimer(self): self.analogPosition = self.a.analog_read(self, 0) self.ui.lblPositionValue.setNum() I am getting the error message: Traceback (most recent call last): File "D:\Programming\Eclipse\IO Demo\src\control.py", line 138, in myapp = MainWindow() File "D:\Programming\Eclipse\IO Demo\src\control.py", line 56, in init self.appTimer.event(self.updateAppTimer()) File "D:\Programming\Eclipse\IO Demo\src\control.py", line 60, in updateAppTimer self.analogPosition = self.a.analog_read(self, 0) TypeError: analog_read() takes exactly 2 arguments (3 given) If I take 'self' out I get the same error message but that only 1 argument is given What is python doing implicitly that I am not aware of? Blockquote

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• Problem upgrading eclipse rcp app from 3.3 to 3.5 on Mac OS

  - by Alb

  I previously had an eclipse rcp app based on eclipse 3.3 pugins deployed on both windows and mac OS X 10.4. i'm now trying to port the app to java 1.6 and eclipse 3.5 (Build id: 20100218-1602) plugins on Mac OS X 10.5.8 (Leopard). I can launch the product from eclipse 3.5 on windows but not on Mac OS X. I have the 64bit cocoa eclipse IDE and java 6. In the launch configuration I set runtime JRE to JVM 1.6.0 and added required plugins. The plugins validate and everything else looks similar to windows configuration where it works, but when I launch i only get the following two lines in the console: 2010-03-16 13:29:32.742 java[758:10b] [Java CocoaComponent compatibility mode]: Enabled 2010-03-16 13:29:32.744 java[758:10b] [Java CocoaComponent compatibility mode]: Setting timeout for SWT to 0.100000 and then the program appears to just hang indefinitely. There is nothing written to the .log file so I'm not sure what error there is. EDIT: Here's what Yourkit profiling says before all cpu activity stops. +----------------------------------------------------------------------------+----------------+-----------------+ | Name | Time (ms) | Own Time (ms) | +----------------------------------------------------------------------------+----------------+-----------------+ | +---<All threads> | 2,799 100 % | | | | | | | | +---org.eclipse.equinox.launcher.Main.main(String[]) | 1,924 69% | 0 | | | | | | | +---org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run() | 632 23 % | 0 | | | | | | | +---java.lang.Thread.run() | 135 5 % | 0 | | | | | | | +---java.lang.ClassLoader.loadClassInternal(String) | 106 4 % | 0 | +----------------------------------------------------------------------------+----------------+-----------------+ , and this in the exceptions tab: Exception staticstics +----------------------------------------+--------------+ | Name | Count | +----------------------------------------+--------------+ | +---java.lang.ClassNotFoundException | 102 11 % | | | | | | +---java.net.MalformedURLException | 4 0 % | | | | | | +---java.lang.NoSuchMethodException | 3 0 % | | | | | | +---java.lang.NumberFormatException | 2 0 % | | | | | | +---java.io.FileNotFoundException | 1 0 % | | | | | | +---java.lang.UnsatisfiedLinkError | 1 0 % | +----------------------------------------+--------------+ and here's more details on the ClassNotFoundExceptions mentioned above: java.lang.ClassNotFoundException Start Level Event Dispatcher native ID: 0x8B0B group: 'main' 78 Thread-4 native ID: 0x10B group: 'main' 22 Framework Event Dispatcher native ID: 0xD207 group: 'main' 2 Anyone know why I don't see a trace for this in Eclipse or in any log files? any ideas where I should look? [Updated on: Tue, 16 March 2010 09:37]

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• LoginView inside FormView control is not databinding on PostBack

  - by subkamran

  I have a fairly simple form: <asp:FormView> <EditItemTemplate> <asp:LoginView> <RoleGroups> <asp:RoleGroup roles="Blah"> <ContentTemplate> <!-- Databound Controls using Bind/Eval --> </ContentTemplate> </asp:RoleGroup> </RoleGroups> </asp:LoginView> <!-- Databound Controls --> </EditItemTemplate> </asp:FormView> <asp:LinqDataSource OnUpdating="MyDataSource_Updating" /> I handle my LinqDataSource OnUpdating event and do some work handling some M:N fields. That all works. However, once the update is finished (and I call e.Cancel = true), the LoginView control does not databind its children... so they are all blank. The FormView's viewstate is still fine, as all the rest of the controls outside of the LoginView appear fine. I even handle the FormView_DataBound event and a Trace shows that the FormView is being databound on postback. Why then is the LoginView not keeping its ViewState/being databound? Here's a sample code snippet showing the flow: protected void MyDataSource_Updating(object s, LinqDataSourceUpdateEventArgs e) { try { Controller.DoSomething(newData); // attempts to databind again here fail // frmView.DataBind(); // MyDataSource.DataBind(); // LoginView.DataBind(); } catch { // blah } finally { e.Cancel = true; } }

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• Unable to load WSDL file error in flex while making a call to a web service.

  - by Angeline Aarthi

  I am trying to call a webservice from my Flex application and this is the code: <mx:WebService id="myWebService" wsdl="http://172.16.111.103:22222/cics/services/PRESENT1?wsdl"> <mx:operation name="PRESENT1Operation" result="resultHandler(event)" fault="faultHandler(event)"> </mx:operation> </mx:WebService> //Function to send customer id to the wsdl request private function searchDetails():void{ myWebService.PRESENT1Operation.send(cusNo.text); cusDetails.visible=true; } The webservice is up and running. I have a separate Java application to test the webservice, And I am able to execute it properly. I am able to request the webservice and get response. But If I try to call the webservice through the Flex application, I get the following error. [RPC Fault faultString="HTTP request error" faultCode="Server.Error.Request" faultDetail="Unable to load WSDL. If currently online, please verify the URI and/or format of the WSDL (http://172.16.111.103:22222/cics/services/PRESENT1?WSDL)"] at mx.rpc.wsdl::WSDLLoader/faultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\wsdl\WSDLLoader.as:98] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:170] at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:225] at mx.rpc::Responder/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\Responder.as:53] at mx.rpc::AsyncRequest/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:103] at DirectHTTPMessageResponder/errorHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\channels\DirectHTTPChannel.as:362] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at flash.net::URLLoader/redirectEvent() Please some one help me with this.

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• Javascript menu that hovers over initial element

  - by TenJack

  I'm trying to build a javascript menu using prototype that when you mouseover an element, that element is hidden and a bigger element is shown in its place that closes onmouseout. This is what I have so far to give you an idea, but it doesn't work and is buggy. I'm not sure what the best general approach is: EDIT: using the prototype refactor from remi bourgarel: function socialMenuInit(){ var social_menu = $('sociable_menu'); social_menu.hide(); var share_words = $('share_words'); Event.observe(share_words,"mouseover",function(){ share_words.hide(); social_menu.show(); }); Event.observe(social_menu,"mouseout",function(){ social_menu.hide(); share_words.show(); }); } EDIT: The main problem now is that the second bigger menu(social_menu) that is shown on top of the smaller mouseover triggering element(share_words) only closes when you mouseout the smaller trigger element even though this element is hidden. EDIT: This is the html and css I am using: <div id="share_words">share</div> <div id="sociable_menu"></div> #share_words{ display: none; border: 1px solid white; position: absolute; right: 320px; top:0px; padding: 4px; background-image: url('/images/icons/group.png'); background-repeat: no-repeat; background-position:7px 6px; text-indent:26px; color: white; z-index: 15; } #sociable_menu{ border: 1px solid black; padding: 5px; position: absolute; right: 275px; top: -10px; z-index: 20; } Thanks for any help.

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• iPhone: Override UIButton buttonWithType to return subclass

  - by Amagrammer

  I want to be able to create a UIButton with an oversized responsive area. I know that one way to do that is to override the hitTest method in a subclass, but how do I instantiate my custom button object in the first place? [OversizedButton buttonWithType: UIButtonTypeDetailDisclosure]; doesn't work out of the box because buttonWithType returns a UIButton, not an OversizedButton. So it seems like I need to override the buttonWithType method as well. Does anyone know how to do this? @implementation OversizedButton + (id)buttonWithType:(UIButtonType)buttonType { // Construct and return an OversizedButton rather than a UIButton // Needs to handle special types such as UIButtonTypeDetailDisclosure // I NEED TO KNOW HOW TO DO THIS PART } - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { // Return results if touch event was in oversized region // I ALREADY KNOW HOW TO DO THIS PART } @end Alternatively, maybe I could create the button using alloc/initWithFrame. But the buttonType property is readonly, so how do you create the custom button types? Note: I know there are other ways to do this, such as having an invisible button behind the visible one. I don't care for that approach and would prefer to avoid it. Any help on the approach described above would be very helpful. Thanks

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• How do I keep Visual Studio's Windows Forms Designer from deleting controls?

  - by Sören Kuklau

  With several forms of mine, I occasionally run into the following issue: I edit the form using the designer (Visual Studio 2008, Windows Forms, .NET 2.0, VB.NET) to add components, only to find out later that some minor adjustments were made (e.g. the form's size is suddenly changed by a few pixels), and controls get deleted. This happens silently — event-handling methods automatically have their Handles suffix removed, too, so they never get called, and there's no compiler error. I only notice much later or not at all, because I'm working on a different area in the form. As an example, I have a form with a SplitContainer containing an Infragistics UltraListView to the left, and an UltraTabControl to the right. I added a new tab, and controls within, and they worked fine. I later on found out that the list view's scrollbar was suddenly invisible, due to its size being off, and at least one control was removed from a different tab that I hadn't been working on. Is this a known issue with the WinForms Designer, or with Infragistics? I use version control, of course, so I can compare the changes and merge the deleted code back in, but it's a tedious process that shouldn't be necessary. Are there ways to avoid this? Is there a good reason for this to occur? One clue is that the control that was removed may have code (such as a Load event handler) that expects to be run in run time, not design time, and may be throwing an exception. Could this cause Visual Studio to remove the control?

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• Telerik RadAlert back button cache problem

  - by Michael VS

  Hi, I'm sure you have had this one before so if you could point me to something similar.... I have a server side creation of a RadAlert window using the usual Sys.Application.remove_load and add_load procedure however the alert keeps popping up as it seems to be caching when the user hits the back button after it has been activated. I have tried to put a onclick event on a button to clear the function using remove_load before it moves to the next page however it still doesn't seem to clear it. Its used in validation so if a user inputs failed validation it pops up. If they then go and enter correct validation it then moves onto the next page. If they then use back button this is where it pops up again. Any ideas? Server side: private void Page_Load(object sender, System.EventArgs e) { if (!IsPostBack) { btnSearch.Attributes.Add("onclick", "Sys.Application.remove_load(f);"); } } private void btnSearch_Click(object sender, System.EventArgs e) { string radalertscript = "(function(){var f = function(){radalert('Welcome to RadWindow Prometheus!', 330, 210); Sys.Application.remove_load(f);};Sys.Application.add_load(f);})()"; RadAjaxManager1.ResponseScripts.Add(radalertscript); } Ive also tried using RadAjaxManager1.ResponseScripts.Clear(); before it moves on to the next page on the postback event

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• Transforming coordinates from an image control to the image source in WPF

  - by Gabriel

  I'm trying to learn WPF, so here's a simple question, I hope: I have a window that contains an Image element bound to a separate data object with user-configurable Stretch property <Image Name="imageCtrl" Source="{Binding MyImage}" Stretch="{Binding ImageStretch}" /> When the user moves the mouse over the image, I would like to determine the coordinates of the mouse with respect to the original image (before stretching/cropping that occurs when it is displayed in the control), and then do something with those coordinates (update the image). I know I can add an event-handler to the MouseMove event over the Image control, but I'm not sure how best to transform the coordinates: void imageCtrl_MouseMove(object sender, MouseEventArgs e) { Point locationInControl = e.GetPosition(imageCtrl); Point locationInImage = ??? updateImage(locationInImage); } Now I know I could compare the size of Source to the ActualSize of the control, and then switch on imageCtrl.Stretch to compute the scalars and offsets on X and Y, and do the transform myself. But WPF has all the information already, and this seems like functionality that might be built-in to the WPF libraries somewhere. So I'm wondering: is there a short and sweet solution? Or do I need to write this myself? EDIT I'm appending my current, not-so-short-and-sweet solution. Its not that bad, but I'd be somewhat suprised if WPF didn't provide this functionality automatically: Point ImgControlCoordsToPixelCoords(Point locInCtrl, double imgCtrlActualWidth, double imgCtrlActualHeight) { if (ImageStretch == Stretch.None) return locInCtrl; Size renderSize = new Size(imgCtrlActualWidth, imgCtrlActualHeight); Size sourceSize = bitmap.Size; double xZoom = renderSize.Width / sourceSize.Width; double yZoom = renderSize.Height / sourceSize.Height; if (ImageStretch == Stretch.Fill) return new Point(locInCtrl.X / xZoom, locInCtrl.Y / yZoom); double zoom; if (ImageStretch == Stretch.Uniform) zoom = Math.Min(xZoom, yZoom); else // (imageCtrl.Stretch == Stretch.UniformToFill) zoom = Math.Max(xZoom, yZoom); return new Point(locInCtrl.X / zoom, locInCtrl.Y / zoom); }

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• Asynchronuos callback saves value but prints FAILED

  - by sprasad12

  Hi, I am using nested Asynchronous callbacks to save my front-end data to the back-end database. The data is being save into the tables the way i want them to, but it is printing that it failed. Here is the code: oksave.addClickHandler(new ClickHandler(){ public void onClick(ClickEvent event) { if(erasync == null) erasync = GWT.create(EntityRelationService.class); AsyncCallback<Void> callback = new AsyncCallback<Void>(){ public void onFailure(Throwable caught) { String msg = caught.getLocalizedMessage(); if (caught instanceof NotFoundException) { msg = ((NotFoundException) caught).getType() + ((NotFoundException) caught).getMessage(); } System.out.println("Failed" + msg); } public void onSuccess(Void result) { Label success = new Label("Name : " + pname.getText() + " was successfully saved"); Button close = new Button("close"); VerticalPanel sp = new VerticalPanel(); d1 = new DialogBox(); sp.add(success); sp.add(close); close.addClickHandler(new ClickHandler(){ @Override public void onClick(ClickEvent event) { if(erasync == null) erasync = GWT.create(EntityRelationService.class); AsyncCallback<Void> callbackOthers = new AsyncCallback<Void>(){ @Override public void onFailure(Throwable caught) { String msg = caught.getLocalizedMessage(); if (caught instanceof NotFoundException) { msg = ((NotFoundException) caught).getType() + ((NotFoundException) caught).getMessage(); } System.out.println("Failed" + msg); } @Override public void onSuccess(Void result) { System.out.println("Success"); } }; erasync.setEntityType(name, top, left, pname, callbackOthers); }); }; erasync.setProject(name, callback); }); Here it prints successful for the first callback, but for the nested one it says failed though it saves the value. Am i missing something? Any input will be of great help. Thank you.

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• Automatically calling OnDetaching() for Silverlight Behaviors

  - by Dan Auclair

  I am using several Blend behaviors and triggers on a silverlight control. I am wondering if there is any mechanism for automatically detaching or ensuring that OnDetaching() is called for a behavior or trigger when the control is no longer being used (i.e. removed from the visual tree). My problem is that there is a managed memory leak with the control because of one of the behaviors. The behavior subscribes to an event on some long-lived object in the OnAttached() override and should be unsubscribing to that event in the OnDetaching() override so that it can become a candidate for garbage collection. However, OnDetaching() never seems to be getting called when I remove the control from the visual tree... the only way I can get it to happen is by explicit detaching the behavior BEFORE removing the control and then it is properly garbage collected. Right now my only solution was to create a public method in the code-behind for the control that can go through and detach any known behaviors that would cause garbage collection problems. It would be up to the client code to know to call this before removing the control from the panel. I don't really like this approach, so I am looking for some automatic way of doing this that I am overlooking or a better suggestion. public void DetachBehaviors() { foreach (var behavior in Interaction.GetBehaviors(this.LayoutRoot)) { behavior.Detach(); } //... //continue detaching all known problematic behaviors.... }

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• Equivalent of typedef in C#

  - by Matthew Scharley

  Is there a typedef equivalent in C#, or someway to get some sort of similar behaviour? I've done some googling, but everywhere I look seems to be negative. Currently I have a situation similar to the following: class GenericClass<T> { public event EventHandler<EventData> MyEvent; public class EventData : EventArgs { /* snip */ } // ... snip } Now, it doesn't take a rocket scientist to figure out that this can very quickly lead to alot of typing (appologies for the horrible pun) when trying to implement a handler for that event. It'd end up being something like this: GenericClass<int> gcInt = new GenericClass<int>; gcInt.MyEvent += new EventHandler<GenericClass<int>.EventData>(gcInt_MyEvent); // ... private void gcInt_MyEvent(object sender, GenericClass<int>.EventData e) { throw new NotImplementedException(); } Except, in my case, I was already using a complex type, not just an int. It'd be nice if it was possible to simplify this a little... Edit: ie. perhaps typedefing the EventHandler instead of needing to redefine it to get similar behaviour.

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• jquery slider control issue

  - by Geetha

  Hi All, I am using slider control to create a progress bar for media player. Problem: the max value and slider size is not matching. The video get complete before it reaches the end of the slider. Code: <script type="text/javascript" src="js/jquery.ui.core.js"></script> <script type="text/javascript" src="js/jquery.ui.slider.js"></script> <link type="text/css" href="CSS/demos.css" rel="stylesheet" /> <link type="text/css" href="CSS/jquery-ui.css" rel="stylesheet" /> $('#slider-constraints').slider("value", 0); $('#slider-constraints').slider("constraints", [0, 0]); $("#slider-constraints").slider({ max: document.mediaPlayer.SelectionEnd, animate: true, range: $R(0, document.mediaPlayer.SelectionEnd), values:(0,document.mediaPlayer.SelectionEnd), value: val, enforceConstraints: false, slide: function(event, ui) { document.mediaPlayer.currentPosition = ui.value; $('#slider-constraints').slider("constraints", [0, ui.value]); $('#slider-constraints').slider("value", ui.value); }, start: function(event, index) { document.mediaPlayer.currentPosition = index.value; $('#slider-constraints').slider("constraints", [0, index.value]); $('#slider-constraints').slider("value", index.value); } }); } // Haldler position window.setInterval(function() { if (document.mediaPlayer.PlayState != 2 && document.mediaPlayer.PlayState == 0) { $('#slider-constraints').slider("constraints", [0, 0]); $('#slider-constraints').slider("value", 0); } else { $('#slider-constraints').slider("constraints", [0, document.mediaPlayer.currentPosition]); } }, 3000); // Progressbar position window.setInterval(function() { if (document.mediaPlayer.PlayState != 2 && document.mediaPlayer.PlayState == 0) { $('#slider-constraints').slider("constraints", [0, 0]); $('#slider-constraints').slider("value", 0); } else { $('#slider-constraints').slider("value", document.mediaPlayer.currentPosition); } }, 3000); } <div id="slider-constraints" >&nbsp;</div>

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• Problem with tomcat and getLocalHost exception

  - by xain

  I'm running a Linux server named S1 in a "cloud" server, and when tomcat 6.0.24 starts, I get the exception: org.apache.catalina.connector.Connector pause SEVERE: Protocol handler pause failed java.net.UnknownHostException: S1: S1 at java.net.InetAddress.getLocalHost(InetAddress.java:1353) at org.apache.jk.common.ChannelSocket.unLockSocket(ChannelSocket.java:485) Which then leads to: ERROR ehcache.Cache - Unable to set localhost. This prevents creation of a GUID. Cause was: Sjira1: S1 java.net.UnknownHostException: S1: S1 at java.net.InetAddress.getLocalHost(InetAddress.java:1353) at net.sf.ehcache.Cache.<clinit>(Cache.java:143) My hosts file is: 127.0.0.1 localhost localhost.localdomain (valid-ip-address) S1 S1.(valid domain name) ping S1 and S1.(valid domain name) return valid ip address nslookup S1.(valid domain name) returns valid ip address nslookup S1 throws ** server can't find S1: NXDOMAIN Any ideas about how to fix this ? Thanks

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• Problem with tomcat and getLocalHost exception

  - by xain

  I'm running a Linux server named S1 in a "cloud" server, and when tomcat 6.0.24 starts, I get the exception: org.apache.catalina.connector.Connector pause SEVERE: Protocol handler pause failed java.net.UnknownHostException: S1: S1 at java.net.InetAddress.getLocalHost(InetAddress.java:1353) at org.apache.jk.common.ChannelSocket.unLockSocket(ChannelSocket.java:485) Which then leads to: ERROR ehcache.Cache - Unable to set localhost. This prevents creation of a GUID. Cause was: Sjira1: S1 java.net.UnknownHostException: S1: S1 at java.net.InetAddress.getLocalHost(InetAddress.java:1353) at net.sf.ehcache.Cache.<clinit>(Cache.java:143) My hosts file is: 127.0.0.1 localhost localhost.localdomain (valid-ip-address) S1 S1.(valid domain name) ping S1 and S1.(valid domain name) return valid ip address nslookup S1.(valid domain name) returns valid ip address nslookup S1 throws ** server can't find S1: NXDOMAIN Any ideas about how to fix this ? Thanks

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• Is it possible to create a custom, animated MKAnnotationView?

  - by smountcastle

  I'm trying to simulate the user location animation in MapKit (where-by the user's position is represented by a pulsating blue dot). I've created a custom subclass of MKAnnotationView and in the drawRect method I'm attempting to cycle through a set of colors. Here's a simpler implementation of what I'm doing: - (void)drawRect:(CGRect)rect { float magSquared = event.magnitude * event.magnitude; CGContextRef context = UIGraphicsGetCurrentContext(); if (idx == -1) { r[0] = 1.0; r[1] = 0.5; r[2] = 0; b[0] = 0; b[1] = 1.0; b[2] = 0.5; g[0] = 0.5; g[1] = 0; g[2] = 1.0; idx = 0; } // CGContextSetRGBFillColor(context, 1.0, 1.0 - magSquared * 0.015, 0.211, .6); CGContextSetRGBFillColor(context, r[idx], g[idx], b[idx], 0.75); CGContextFillEllipseInRect(context, rect); idx++; if (idx > 3) idx = 0; } Unfortunately this just causes the annotations to be one of the 3 different colors and doesn't cycle through them. Is there a way to force the MKAnnotations to continually redraw so that it appears to be animated?

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• Fade out when user leaves page — jquery

  - by Tom Julian Hume

  I have some simple page transitions that fade in, once the user has landed. However, I'm also trying to make the same page fade out, when the user leaves. I have found a few solutions, but they appeared to use delay(). Are there any that don't? Thanks for any help, (I'm new to this, mind!) Tom :) I am currently using this code: $(document).ready( function(){ $( 'body' ).fadeIn(2000); $('#stop').click(function (e) { e.preventDefault(); }); $('#clients').click(function() { $("#projectinfo").slideUp('slow'); $("#us").fadeOut('slow'); $("ul").fadeToggle('slow'); }); $('#information').click(function() { $("#projectinfo").slideUp('slow'); $("ul").fadeOut('slow'); $("#us").fadeToggle('slow'); }); $('#question').click(function() { $("#projectinfo").slideToggle('slow'); }); $('#question').hover(function() { $("#projectinfo").slideToggle('slow'); }); $("a").click(function(event){ event.preventDefault(); linkLocation = this.href; $("body").fadeOut(1000, redirectPage); }); function redirectPage() { });

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• open_basedir vs sessions

  - by liquorvicar

  On a virtual hosting server I have the open_basedir set to .:/path/to/vhost/web:/tmp:/usr/share/pear for each virtual host. I have a client who's running WordPress and he's complaining about open_basedir errors thus: PHP WARNING: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/var/lib/php/session/sess_42k7jn3vjenj43g3njorrnrmf2) is not within the allowed path(s): (.:/path/to/vhost/web:/tmp:/usr/share/pear) So the PHP session save_path isn't included in open_basedir but sessions across all sites on the server seems to be working fine apart from in this intermittent instance. I thought that perhaps the default session handler ignored open_basedir and this warning was caused by WP accessing the session file directly. However from what I can see PHP 5.2.4 introduced open_basedir checking to the session.save_path config: http://www.php.net/ChangeLog-5.php#5.2.4 (I am on PHP 5.2.13). Any ideas?

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• Android: Custom ListAdapter extending BaseAdapter crashes on application launch.

  - by Danny

  Data being pulled from a local DB, then mapped using a cursor. Custom Adapter displays data similar to a ListView. As items are added/deleted from the DB, the adapter is supposed to refresh. The solution attempted below crashes the application at launch. Any suggestions? Thanks in advance, -D @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; ViewGroup p = parent; if (v == null) { LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.items_row, p); } int size = mAdapter.getCount(); Log.d(TAG, "position " + position + " Size " + size); if(size != 0){ if(position < size) return mAdapter.getView(position, v, p); Log.d(TAG, "-position " + position + " Size " + size); } return null; } Errors: 03-23 00:14:10.392: ERROR/AndroidRuntime(718): java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.AdapterView.addView(AdapterView.java:461) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.LayoutInflater.inflate(LayoutInflater.java:415) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at com.xyz.abc.CustomSeparatedListAdapter.getView(CustomSeparatedListAdapter.java:90) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.AbsListView.obtainView(AbsListView.java:1273) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.makeAndAddView(ListView.java:1658) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.fillDown(ListView.java:637) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.fillFromTop(ListView.java:694) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.layoutChildren(ListView.java:1516) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.AbsListView.onLayout(AbsListView.java:1112) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:998) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.LinearLayout.onLayout(LinearLayout.java:918) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.ViewRoot.performTraversals(ViewRoot.java:979) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.ViewRoot.handleMessage(ViewRoot.java:1613) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.os.Handler.dispatchMessage(Handler.java:99) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.os.Looper.loop(Looper.java:123) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.app.ActivityThread.main(ActivityThread.java:4203) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at java.lang.reflect.Method.invokeNative(Native Method) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at java.lang.reflect.Method.invoke(Method.java:521) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at dalvik.system.NativeStart.main(Native Method)

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• javascript removeChild(this) from input[type="submit"] onclick breaks future use of form.submit() un

  - by maximumduncan

  I have come across some strange behaviour, and I'm assuming a bug in firefox, when removing a input submit element from the DOM from within the click event. The following code reproduces the issue: <form name="test_form"> <input type="submit" value="remove me" onclick="this.parentNode.removeChild(this);" /> <input type="submit" value="submit normally" /> <input type="button" value="submit via js" onclick="document.test_form.submit();" /> </form> To reproduce: Click "remove me" Click "submit via js". Note that the form does not get submitted, this is the problem. Click "submit normally". Note that the form still gets submitted normally. It appears that, under Firefox, if you remove a submit button from within the click event it puts the form in an invalid state so that any future calls to form.submit() are simply ignored. But it is a javascript-specific issue as normal submit buttons within this form still function fine. To be honest, this is such a simple example of this issue that I was expecting the internet to be awash with other people exeriencing it, but so far searching has yealded nothing useful. Has anyone else experienced this and if so, did you get to the bottom of it? Many thanks

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• Which user account should be used for WSGIDaemonProcess?

  - by Nathan S

  I have some Django sites deployed using Apache2 and mod_wsgi. When configuring the WSGIDaemonProcess directive, most tutorials (including the official documentation) suggest running the WSGI process as the user in whose home directory the code resides. For example: WSGIScriptAlias / /home/joe/sites/example.com/mod_wsgi-handler.wsgi WSGIDaemonProcess example.com user=joe group=joe processes=2 threads=25 However, I wonder if it is really wise to run the wsgi daemon process as the same user (with its attendant privileges) which develops the code. Should I set up a service account whose only privilege is read-only access to the code in order to have better security? Or are my concerns overblown?

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