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  • How to load a configuration file at startup within tomcat

    - by Alex
    I want to be able to load my configuration for the webapp at startup of tomcat (apache commons configuration library) is this a possible way: public class MyAppCfg implements javax.servlet.ServletContextListener { private ServletContext context = null; @Override public void contextInitialized(ServletContextEvent event) { try{ this.context = event.getServletContext(); XMLConfiguration config = new XMLConfiguration("cfg.xml"); config.setReloadingStrategy(new FileChangedReloadingStrategy()); this.context.setAttribute("mycfg", config); } catch (Exception e) { e.printStackTrace(); } } @Override public void contextDestroyed(ServletContextEvent arg0) { this.context = null; } } web.xml <listener> <listener-class>mypackage.MyAppCfg</listener-class> </listener> and later acces them in the webapp via this.cfg = (XMLConfiguration) servletRequest.getAttribute("mycfg");

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  • How to make a mutable ItemizedOverlay

    - by Hamy
    Hey all, I would like to make a Google map overlay with changable pins. An easy way to visualize this would be to think of a near real time overlay, where the pins are constantly changing location. However, I can't seem to think of a safe way to do this with the ItemizedOverlay. The problem seems to be the call to populate - If size() is called by some maps thread, and then my data changes, then the result when the maps call accesses getItem() can be an IndexOutOfBoundsException. Can anyone think of a better solution than overloading populate and wrapping super.populate in a synchronized block? Perhaps I could get better luck using a normal Overlay? The Itemized one seems to exist to manage the data for you, perhaps I am making a fundamental mistake by using it? Thanks for any help, my brain is hurting! Hamy

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  • How to determine pixel color of System.Windows.Controls.Image?

    - by csciguy
    I have an Image from (System.Windows.Controls.Image). This image is positioned on a main canvas. I want to determine the alpha channel value of the mouse cursor when I click on any portion of this image. When doing something like the following, I'm getting an exception. {"Value does not fall within the expected range."} System.Exception {System.ArgumentException} Code: try{ CroppedBitmap cb = new CroppedBitmap(ac.displayImage.Source as BitmapSource, new Int32Rect((int)mousePoint.X, (int)mousePoint.Y, 1, 1)); byte[] pixels = new byte[4]; cb.CopyPixels(pixels, 4, 0); } catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.Message); } The mousePoint.X, and mousePoint.Y are obtained when the user clicks on the main window. Is there a better way to do this?

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  • How Do I create a synchronous version of NSURLConnection

    - by quinn
    I am using NSURLConnection inside of an NSIncrementalStore to synchronize my NSManagedObject with rest based web service built in Rails. I am aware of +sendSynchronousRequest:returningResponse:error but my understanding is that will not allow me to access such things as the HTTP response status code which I will need to properly handle the response, my understanding is sendSynchronousRequest returns the data if it responds in the 200 range and fails if it doesn't and doesn't really give you much more than that. I'm assuming I will somehow have to block the current method call after the NSURLConnection is instantiated and unblock it after NSURLConnection's delegate sets some value that can be returned by the blocked method. I'm assuming this will involve some combination of NSLock and NSThread but I really don't know where to start with this, any help will be greatly appreciated, thank you.

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  • Weird zend fw problem that makes me crazy!!

    - by Harun Baris Bulut
    Hi, There is a problem that I can't resolve. I am developing a project and test on my computer which runs as expected. But when I move the project to testing server, which also has Zend Server CE, it gives blank page. Display errors function is ON and I put try catch at the very begining, but it still shows a blank page. When ever I write "exit;" command at the end of related view script, page works normally! What can couse this problem ? Thanks

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  • Need help using the Windows IP Helper API & ParseNetworString in C#.

    - by JohnnyNoir
    I'm attempting to rewrite some C# web service code that uses the Windows IP Helper API call "SendARP" to retreive a remote system's MAC address. SendARP works great - until you cross a network segment as Arp requests aren't routed. I've been looking at the "ParseNetworkString" documentation after happening across its existance on StackOverflow. The quick & dirty algorithm I have in mind is: public static string GetMacAddress(string strHostOrIP) { if (strHostOrIP is IPAddress) { parse results of nbstat -A strHostOrIP return macAddress } if (strHostOrIP is Hostname) { IPHostEntry hostEntry = null; try { hostEntry = Dns.GetHostEntry(strHostOrIP); } catch { return null; } if (hostEntry.AddressList.Length == 0) { return null; } foreach (IPAddress ip in hostEntry.AddressList) { if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) { ipAddress = ip; break; } } } return GetMACAddress(ipAddress); } "ParseNetworkString" is new with Vista/Win2008 so I haven't been able to find example C# code demonstrating its use and I'm no C++ coder so if anyone can point me in the right direction...

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  • Understanding Ruby Enumerable#map (with more complex blocks)

    - by mstksg
    Let's say I have a function def odd_or_even n if n%2 == 0 return :even else return :odd end end And I had a simple enumerable array simple = [1,2,3,4,5] And I ran it through map, with my function, using a do-end block: simple.map do |n| odd_or_even(n) end # => [:odd,:even,:odd,:even,:odd] How could I do this without, say, defining the function in the first place? For example, # does not work simple.map do |n| if n%2 == 0 return :even else return :odd end end # Desired result: # => [:odd,:even,:odd,:even,:odd] is not valid ruby, and the compiler gets mad at me for even thinking about it. But how would I implement an equivalent sort of thing, that works?

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  • Data not displayed first time in android after copying the file from assets to data folder

    - by Thinkcomplete
    Description I have used the code tip from http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/ to copy a pre-filled data file to the target and handled this in a asynch task Problem : On starting the application it gives error and shuts down first time, starting again without any change it works perfectly fine. So first time after the file is copied, the error comes but after that no issues. Please help Code attached:.. private class CopyDatabase extends AsyncTask<String, Void, Boolean> { private final ProgressDialog dialog = new ProgressDialog(BabyNames.this); protected void onPreExecute() { this.dialog.setMessage("Loading..."); this.dialog.show(); } @Override protected Boolean doInBackground(String... params) { // TODO Auto-generated method stub try { namesDBSQLHelper.createDatabase(); return null; } catch(IOException ioe){ ioe.printStackTrace(); } return null; } protected void onPostExecute(final Boolean success){ if (this.dialog.isShowing()){ this.dialog.dismiss(); } } }

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  • Saving part of audio file (java)

    - by m159701m
    Hi evryone, While playing an audio file (.wav) I want , if I resort to ctrl+c , to stop the playback and save part of the audio file in a file called "file2.wav". Here's the thread I'd like to add to my code. Unfortunately it doesn't work at all. Thanks in advance class myThread extends Thread{ public void run(){ try { PipedOutputStream poStream = new PipedOutputStream(); PipedInputStream piStream = new PipedInputStream(); poStream.connect(piStream); File cutaudioFile = new File ("file2.wav"); AudioInputStream ais = new AudioInputStream(piStream, AudioFileFormat.Type.WAVE , cutaudioFile); poStream.write(ais,AudioFileFormat.Type.WAVE,cutaudioFile); }catch (Exception e){ e.printStackTrace(); } } // end run } // end myThread

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  • When a li is appended, does it not become a part of the ul "for real"?

    - by Noor
    I have right now this code: <ul><li class="listitem">text<li></ul> jQuery: $('.listitem').click(function() { $("#elname").text($(this).text()); $('#slists').css('visibility','hidden') $('#elname').css('visibility','visible') $('#elname').css('display','inline-block') }); This is supposed to hide a div and it does, but when I append items to the ul (with the class listitem) nothing happens with the appended item, the class it gets is correct, the title, and the value too. Can this have something to do with the code above being in the document ready function to do?

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  • How to best fetch a cell value from excel using VSTO?

    - by Behrooz Karjooravary
    I am trying to get cells from excel into csharp but not sure what's the best variable type to read it into. If I make the variable a string and the cell value is a double I get a parse error. If I make the variable double then when the cell is a string it wont work. Here's the code I am running: try { string i = Globals.Sheet1.Cells[7, 7].Value; double num; if (i == null) return; if (double.TryParse(i, out num)) { . . . } } catch (Exception e) { MessageBox.Show(e.ToString()); }

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  • How do I visualize a complex graph in .Net?

    - by Ivan
    I need to visualize a graph (technically being a set of Entity Framework objects, but I can translate it to another representation if needed) of this kind. I don't know how to name it (by the way, if you know - I'll appreciate if you tell me). It would be ideal for graph elements to be clickable (so that when user clicks on a block, I can handle an event with the element id specified) but I can survive even without any interactivity. Are there any components available good for this task? If no, what should I look for to help me to develop an algorithm for drawing such a graph with visually-comfortable layout?

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  • What should I do if a IOException is thrown?

    - by Roman
    I have the following 3 lines of the code: ServerSocket listeningSocket = new ServerSocket(earPort); Socket serverSideSocket = listeningSocket.accept(); BufferedReader in = new BufferedReader(new InputStreamReader(serverSideSocket.getInputStream())); The compiler complains about all of these 3 lines and its complain is the same for all 3 lines: unreported exception java.io.IOException; In more details, these exception are thrown by new ServerSocket, accept() and getInputStream(). I know I need to use try ... catch .... But for that I need to know what this exceptions mean in every particular case (how should I interpret them). When they happen? I mean, not in general, but in these 3 particular cases.

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  • Can not access android /data folder?

    - by fonter
    try { Runtime rt = Runtime.getRuntime(); Process pcs = rt.exec("ls -l /data"); BufferedReader br = new BufferedReader(new InputStreamReader(pcs .getInputStream())); String line = null; while ((line = br.readLine()) != null) { Log.e("line","line="+line); } br.close(); pcs.waitFor(); int ret = pcs.exitValue(); Log.e("ret","ret="+ret); } catch (Exception e) { Log.e("Exception", "Exception", e); } only print "ret=0",How to print the correct path?

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  • how to run progress-bar through insert query ?

    - by Gold
    hi i have this insert query: try { Cmd.CommandText = @"INSERT INTO BarcodTbl SELECT * FROM [Text;DATABASE=" + PathI + @"\].[Tmp.txt];"; Cmd.ExecuteNonQuery(); Cmd.Dispose(); } catch (Exception ex) { MessageBox.Show(ex.Message); } and i have two question: how to run progress-bar from the begging to the end of the insert ? if there any error i got the error exception and the action is stop - the query stop and the BarcodTbl is empty. how i can see the error and that the query will continue to fill the table ? thank's in advance

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  • How are exceptions allocated on the stack caught beyond their scope?

    - by John Doe
    In the following code, the stack-based variable 'ex' is thrown and caught in a function beyond the scope in which ex was declared. This seems a bit strange to me, since (AFAIK) stack-based variables cannot be used outside the scope in which they were declared (the stack is unwound). void f() { SomeKindOfException ex(...); throw ex; } void g() { try { f(); } catch (SomeKindOfException& ex) { //Handling code... } } I've added a print statement to SomeKindOfException's destructor and it shows that ex is destructed once it goes out of scope in f() but then it's caught in g() and destructed again once it goes out of scope there as well. Any help?

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  • How to reload different objects by applicationsettingsbase?

    - by younevertell
    // TestASettingsString and TestBSettingsString are byte[] // TestASettings and TestBSettings are two objects to be saved My question is how to recover TestASettings and TestBSettings from TestASettingsString and TestASettingsString seperately in loadsavedsettings? Thanks private void SettingsSaving(object sender, CancelEventArgs e) { try { var stream = new MemoryStream(); var formatter = new BinaryFormatter(); formatter.Serialize(stream, TestASettings); // TestASettingsString and TestBSettingsString are byte[] TestASettingsString = stream.ToArray(); stream.Flush(); formatter.Serialize(stream, TestBSettings); TestBSettingsString = stream.ToArray(); stream.Close(); } catch (Exception ex) { Debug.WriteLine(ex); } } private void LoadSavedSettings() { Reload(); // how to get TestASettings and TestBSettings from TestASettingsString and // TestASettingsString seperately? }

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  • Ant: make "available" throw an understandable error?

    - by digitala
    When running ant, how do I make an <available /> block throw an adequate error message? This is what I have so far: <target name="requirements"> <available classname="foo.bar.baz" property="baz.present" /> </target> <target name="directories" depends="requirements" if="baz.present"> <mkdir dir="build" /> </target> <target name="compile" depends="directories"> <!-- build some stuff --> </target> What I'm currently seeing when requirements fails is a message complaining about the ./build dir not being available. How can I change this so that a message is displayed about the missing class, such as "foo.bar.baz is not available"?

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  • Delphi - How to prevent Forms/MsgBoxes to move under prior form?

    - by durumdara
    Hi! Many times we experienced after Windows 98 era that some dialogs are lost their Z-Order, and moved back to prior form. For example: Dialog1.ShowModal; Dialog1.OnClickButton() : ShowMessage('anything'); When MessageBox appears, sometimes not got focus, it is moved under Dialog1. The users confused on it, because they are say: application freezed!!! But if they are uses AltTab to move another app and back, the focus return to the MessageBox, and it will be the foreground Window. We experienced this with ShowMessage, MessageBox, normal forms, QuickReport forms also. Is anyone knows about this? Is it Windows bug? How to prevent it? How to catch this? Thanks for your help: dd

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  • Twitter Authentication through Android's AccountManager classes.

    - by Robby Pond
    I am working on a twitter based app and am trying to incorporate Android's built-in Account support for Twitter. The following code works to popup the confirmation dialog for my app to access twitter but I am unsure of what to pass in as the authenticationType. Any help would be appreciated. I've googled all over the place and can't seem to find the correct answer. It goes in place of "oauth" below. AccountManager am = AccountManager.get(this); Account[] accts = am.getAccountsByType(TWITTER_ACCOUNT_TYPE); if(accts.length > 0) { Account acct = accts[0]; am.getAuthToken(acct, "oauth"/*what goes here*/, null, this, new AccountManagerCallback<Bundle>() { @Override public void run(AccountManagerFuture<Bundle> arg0) { try { Bundle b = arg0.getResult(); Log.e("TrendDroid", "THIS AUTHTOKEN: " + b.getString(AccountManager.KEY_AUTHTOKEN)); } catch (Exception e) { Log.e("TrendDroid", "EXCEPTION@AUTHTOKEN"); } }}, null); }

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  • Posting data using AJAX

    - by ognjenb
    public ActionResult Create() { return View(); } // // POST: /Partial/Create [HttpPost] public ActionResult Create(last_name ln) { try { // TODO: Add insert logic here proba.AddTolast_name(ln); proba.SaveChanges(); return View(); } catch { return View(); } } Part of index View: <div id="Div1"> <% using (Ajax.BeginForm("Create", new AjaxOptions { UpdateTargetId = "Div1" })) { %> <%= Html.Action("Create")%> <% } %> </div> In this solutions data from from View Create not post to database. In this solutions data posted to database <div id="Div1"> <%= Html.Action("Create")%> </div> View "Create" is strongly typed view. Why is this happening ie why the first solution does not work?

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  • TcpListener Socket still active after program exits.

    - by lnical
    I'm trying to stop a TCP Listener as my program is exiting. I do not care about any data that is currently active on the socket or any of the active client sockets. The socket clean up code is essentially: try { myServer.Server.Shutdown(SocketShutdown.Both) } catch (Exception ex) { LogException(ex) } myServer.Server.Close(0) myServer.Stop() myServer is a TCPListener On some occasions, Shutdown will thrown an exception System.Net.Sockets.SocketException: A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied at System.Net.Sockets.Socket.Shutdown(SocketShutdown how) When this happens, the socket is never released. Even after the application exits netstat shows the socket is still in the listening state. I have not been able to create definitive reproduction scenerio, it happens at seemingly random times. Client Sockets are cleaned up independently. Do you have any suggestions to help me make this socket die?

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  • what is wrong with this insert method in asp.net mvc?

    - by Pandiya Chendur
    My controller calls a repository class method on insert, [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create([Bind(Exclude = "Id")]FormCollection collection) { try { MaterialsObj materialsObj = new MaterialsObj(); materialsObj.Mat_Name = collection["Mat_Name"]; materialsObj.Mes_Id = Convert.ToInt64(collection["MeasurementType"]); materialsObj.Mes_Name = collection["Mat_Type"]; materialsObj.CreatedDate = System.DateTime.Now; materialsObj.CreatedBy = Convert.ToInt64(1); materialsObj.IsDeleted = Convert.ToInt64(1); consRepository.createMaterials(materialsObj); return RedirectToAction("Index"); } catch { return View(); } } and my repository class has this, public MaterialsObj createMaterials(MaterialsObj materialsObj) { db.Materials.InsertOnSubmit(materialsObj); return materialsObj; } But when i compile this i get The best overloaded method match for 'System.Data.Linq.Table<CrMVC.Models.Material>.InsertOnSubmit(CrMVC.Models.Material)' has some invalid arguments... cannot convert from 'CrMVC.BusinessObjects.MaterialsObj' to 'CrMVC.Models.Material'.. am i missing something?

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  • eclipse: calling organizeimports programmatcally

    - by Stefan Roka
    Hi, I'm trying to execute 'OrganizeImports' programmatically on files that I'm editing programmatically. My code looks like this: final ICommandService cmdService = (ICommandService)PlatformUI.getWorkbench().getService (ICommandService.class); if (cmdService != null) { final Command cmd = cmdService.getCommand(IJavaEditorActionDefinitionIds.ORGANIZE_IMPORTS); final ExecutionEvent execEvt = new ExecutionEvent(cmd, Collections.EMPTY_MAP, compileationUnit, null); PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(); ResourcesPlugin.getWorkspace(). Display.getDefault().syncExec(new Runnable() { @Override public void run() { try { //cmd.executeWithChecks(execEvt); cmd.execute(execEvt); } catch (Exception e) { getLogger().severe("organize imports failed: " + e.getMessage()); } } My problem is that OrganizeImportsAction executes on the current selection which is not the same as the compilation unit I'm editing. I would like to set the selection programmatically on the compilation unit but I don't know how to do that. Or maybe there is another way to trigger OrganizeImports. thanks, stefan

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  • How to set RequestBody for Http Delete method.

    - by Tushar Tarkas
    I am writing a client code for a server which Delete API. The API specification requires data to be sent. I am using HttpComponents v3.1 library for writing client code. Using the HtpDelete class I could not find a way to add request data to it. Is there a way to do so ? Below is the code snippet. HttpDelete deleteReq = new HttpDelete(uriBuilder.toString()); List<NameValuePair> postParams = new ArrayList<NameValuePair>(); postParams.add(new BasicNameValuePair(RestConstants.POST_DATA_PARAM_NAME, postData.toString())); try { UrlEncodedFormEntity entity = new UrlEncodedFormEntity(postParams); entity.setContentEncoding(HTTP.UTF_8); //deleteReq.setEntity(entity); // There is no method setEntity() deleteReq.setHeader(RestConstants.CONTENT_TYPE_HEADER, RestConstants.CONTENT_TYPE_HEADER_VAL); } catch (UnsupportedEncodingException e) { logger.error("UnsupportedEncodingException: " + e); } Thanks in advance.

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