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  • Error when creating JFrame from JFrame

    - by Aly
    Hi, I have an application that is works fine and the JFrame for it is launched in the constructor of a GameInitializer class which takes in some config parameters. I have tried to create a GUI in which allows the user to specify these config parameters and then click submit. When the user clicks submit a new GameInitializer object is created. The error I am getting is: Exception in thread "AWT-EventQueue-0" java.lang.Error: Cannot call invokeAndWait from the event dispatcher thread at java.awt.EventQueue.invokeAndWait(Unknown Source) at javax.swing.SwingUtilities.invokeAndWait(Unknown Source) at game.player.humanplayer.view.HumanView.update(HumanView.java:43) once submit is called this code is executed: values assigned to parames... new GameInitializer(userName, player, Constants.BLIND_STRUCTURE_FILES.get(blindStructure), handState); Then code in the GameInitializer constructor is: public GameInitializer(String playerName, AbstractPlayer opponent, String blindStructureConfig, AbstractHandState handState){ beginGame(playerName, opponent, blindStructureConfig, handState); } public static void beginGame(String playerName, AbstractPlayer opponent, String blindStructureConfig, AbstractHandState handState){ AbstractDealer dealer; BlindStructure.initialize(blindStructureConfig); AbstractPlayer humanPlayer = new HumanPlayer(playerName, handState); AbstractPlayer[] players = new AbstractPlayer[2]; players[0] = humanPlayer; players[1] = opponent; handState.setTableLayout(players); for(AbstractPlayer player : players){ player.initialize(); } dealer = new Dealer(players, handState); dealer.beginGame(); } It basically cascades down and eventually calls this piece of code in the HumanView class: public void update(final Event event, final ReadableHandState handState, final AbstractPlayer player) { try { SwingUtilities.invokeAndWait(new Runnable() { public void run() { gamePanel.update(event, handState, player); validate(); } }); } catch (InterruptedException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } if(event.equals(Event.HAND_ENDING)){ try { if(handState.wonByShowdown() || handState.isSplitPot()){ Thread.sleep(3500); } else{ Thread.sleep(1000); } } catch (InterruptedException e) { e.printStackTrace(); } } } Do you have any idea why?

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  • WCF InProcFactory error

    - by Terence Lewis
    I'm using IDesign's ServiceModelEx assembly to provide additional functionality over and above what's available in standard WCF. In particular I'm making use of InProcFactory to host some WCF services within my process using Named Pipes. However, my process also declares a TCP endpoint in its configuration file, which I host and open when the process starts. At some later point, when I try to host a second instance of this service using the InProcFactory through the named pipe (from a different service in the same process), for some reason it picks up the TCP endpoint in the configuration file and tries to re-host this endpoint, which throws an exception as the TCP port is already in use from the first hosting. Here is the relevant code from InProcFactory.cs in ServiceModelEx: static HostRecord GetHostRecord<S,I>() where I : class where S : class,I { HostRecord hostRecord; if(m_Hosts.ContainsKey(typeof(S))) { hostRecord = m_Hosts[typeof(S)]; } else { ServiceHost<S> host; if(m_Singletons.ContainsKey(typeof(S))) { S singleton = m_Singletons[typeof(S)] as S; Debug.Assert(singleton != null); host = new ServiceHost<S>(singleton,BaseAddress); } else { host = new ServiceHost<S>(BaseAddress); } string address = BaseAddress.ToString() + Guid.NewGuid().ToString(); hostRecord = new HostRecord(host,address); m_Hosts.Add(typeof(S),hostRecord); host.AddServiceEndpoint(typeof(I),Binding,address); if(m_Throttles.ContainsKey(typeof(S))) { host.SetThrottle(m_Throttles[typeof(S)]); } // This line fails because it tries to open two endpoints, instead of just the named-pipe one host.Open(); } return hostRecord; }

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  • Workflow Foundation (WF) -- Why does setting a DependencyProperty to a COM object using SetValue() t

    - by stakx
    Assume that I have a .NET Workflow Foundation (WF) SequenceActivity class with the following property: public IWorkspace Workspace { get; set; } // ^^^^^^^^^^ // important: this is a COM interface type! public static DependencyProperty WorkspaceProperty = DependencyProperty.Register( "Workspace", typeof(IWorkspace), typeof(FoobarActivity)); // <-- this activity class This activity executes some code that sets both of the above like this: this.Workspace = ...; // exact code not relevant; property set to a COM object SetValue(WorkspaceProperty, this.Workspace); The last line (which makes the call to SetValue) results in an ArgumentException for the second parameter (having the value of this.Workspace): Type […].IWorkspace of dependency property Workspace does not match the value's type System.__ComObject.                                           (translated from German, the English exception text might differ slightly) As soon as I register the dependency property with typeof(object) instead of typeof(IWorkspace) as the second parameter, the code executes just fine. However, that would result in the possibility to assign just about any value to the dependency property, and I do not want that. It seems to me that WF dependency properties don't work for COM interop objects.Does anyone have a solution to this?

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  • Connect to a site using proxy code in java

    - by Nithin
    I want to connect to as site through proxy in java.This is the code which I have written public class ConnectThroughProxy { Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("proxy ip", 8080)); public static void main(String[] args) { try{ URL url = new URL("http://www.rgagnon.com/javadetails/java-0085.html"); URLConnection connection=url.openConnection(); String encoded = new String(Base64.encode(new String("user_name:pass_word").getBytes())); connection.setDoOutput(true); connection.setRequestProperty("Proxy-Authorization","Basic "+encoded); String page=""; String line; StringBuffer tmp = new StringBuffer(); BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream())); while ((line=in.readLine()) != null){ page.concat(line + "\n"); } System.out.println(page); }catch(Exception ex){ ex.printStackTrace(); } } while trying to run this code it throws the following error java.lang.IllegalArgumentException: Illegal character(s) in message header value: Basic dXNlcl9uYW1lOnBhc3Nfd29yZA== at sun.net.www.protocol.http.HttpURLConnection.checkMessageHeader(HttpURLConnection.java:323) at sun.net.www.protocol.http.HttpURLConnection.setRequestProperty(HttpURLConnection.java:2054) at test.ConnectThroughProxy.main(ConnectThroughProxy.java:30) Any Idea how to do it.

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  • Setting ItemTemplate based on CheckBox value

    - by ph0enix
    I have a DataTemplate which contains a CheckBox and ListBox. When the CheckBox is checked, I want to change the ItemTemplate property on the ListBox to change the appearance of each item. Right now, it looks like this: <DataTemplate DataType={x:Type MyViewModel}> <DockPanel> <CheckBox DockPanel.Dock="Bottom" Content="Show Details" HorizontalAlignment="Right" IsChecked="{Binding ShowDetails}" Margin="0 5 10 5" /> <ListBox ItemsSource="{Binding Items}" ItemTemplate="{StaticResource SimpleItemTemplate}" Margin="10 0 10 5"> <ListBox.Triggers> <DataTrigger Binding="{Binding ShowDetails}" Value="True"> <Setter Property="ItemTemplate" Value="{StaticResource DetailedItemTemplate}" /> </DataTrigger> </ListBox.Triggers> </ListBox> </DockPanel> </DataTemplate> However, when I try to compile, I get the following error messages: Value 'ItemTemplate' cannot be assigned to property 'Property'. Invalid PropertyDescriptor value. and Cannot find the static member 'ItemTemplateProperty' on the type 'ContentPresenter'. I'm still fairly new to WPF, so perhaps there is something I'm not quite understanding?

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  • Get id when inserting new row using TableAdapter.Update on a file based database

    - by phq
    I have a database table with one field, called ID, being an auto increment integer. Using a TableAdapter I can read and modify existing rows as well as create new ones. However if I try to modify a newly inserted row I get an DBConcurrencyException: OleDbConnection conn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Shift.mdb;Persist Security Info=True"); ShiftDataSetTableAdapters.ShiftTableAdapter shiftTA = new ShiftDataSetTableAdapters.ShiftTableAdapter(); shiftTA.Connection = conn; ShiftDataSet.ShiftDataTable table = new ShiftDataSet.ShiftDataTable(); ShiftDataSet.ShiftRow row = table.NewShiftRow(); row.Name = "life"; table.Rows.Add(row); shiftTA.Update(row); // row.ID == -1 row.Name = "answer"; // <-- all fine up to here shiftTA.Update(row); // DBConcurrencyException: 0 rows affected Separate question, is there any static type of the NewShiftRow() method I can use so that I don't have to create table everytime I want to insert a new row. I guess the problem in the code comes from row.ID that is still -1 after the first Update() call. The Insert is successful and in the database the row has a valid value of ID. How can I get that ID so that I can continue with the second Update call? Update: IT looks like this could have been done automatically using this setting. However according to the answer on msdn social, OLEDB drivers do not support this feature. Not sure where to go from here, use something else than oledb? Update: Tried SQLCompact but discovered that it had the same limitation, it does not support multiple statements. Final question: is there any simple(single file based) database that would allow you to get the values of a inserted row.

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  • Browser Based Streaming Video/Audio (not progressive download)

    - by Josh
    Hello, I am trying to understand conceptually the best way to deliver real streaming audio and video content. I would want it to be consumed with a web browser, utilizing the least amount of proprietary technology. I wouldn't be serving static files and using progressive download, this would be real audio streams being captured live. How does one broadcast a stream that will be reasonably in sync with the source? What kind of protocol is suitable? Edit: In research I've found that there are a few protocols: RTSP, HTTP Streaming, RTMP, and RTP. HTTP streaming is somewhat unsuitable if you are streaming a live performance/communication of some kind because it relies on TCP (as its HTTP based) and you don't lose packets. In a low bandwidth situation, the client can get significantly behind in playback. ref RTMP is a proprietary technology, requiring flash media server. Crap on that. The reason I looked at flash is because they are extremely flexible as far as user experience goes. SoundManager2 provides an excellent javascript interface for playing media with flash. This is what I would look for in a client application. RTSP/RTP is what Microsoft switched to using, deprecating their MMS protocol. RTSP is the control protocol. Its similar to HTTP with a few distinct difference -- server can also talk to the client, and there are additional commands, like PAUSE. Its also a stateful protocol, which is maintained with a session id. RTP is the protocol for delivering the payload (encoded audio or video). There are a few open sourced projects, one of them being supported by apple here. It seems like this might do what I want it to, and it looks like quite a few players support it. It sounds like it would be suitable for a "live" broadcast from this page here. Thanks, Josh

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  • stack and heap issue for iPhone memory management

    - by Forrest
    From this post I got know that the Objective-C runtime does not allow objects to be instantiated on the stack, but only on the heap; this means that you don’t have “automatic objects”, nor things like auto_ptr objects to help you manage memory; Someone give one example in post Objective C: Memory Allocation on stack vs. heap NSString* str = @"hello"; but this NSString is also not allocated in stack. Feel odd that this str is static. (Who can explain this ? ) Question here is that why there is no heap ? even mixing c++ together with Object C ? /////////////////////////////// Clear my question /////////////////////////////// I am confused , so questions are not clear. Let me put in this way. 1) All Object C objects should be alloc in stack ? ( I think yes ) 2)In C++, there are stack for memory, so for iOS app, also have stack ? ( I think yes ) 3) for iOS app, if only use Object C, so what is the usage of stack ? what kind of objects should use stack then ?

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  • How do I compress a Json result from ASP.NET MVC with IIS 7.5

    - by Gareth Saul
    I'm having difficulty making IIS 7 correctly compress a Json result from ASP.NET MVC. I've enabled static and dynamic compression in IIS. I can verify with Fiddler that normal text/html and similar records are compressed. Viewing the request, the accept-encoding gzip header is present. The response has the mimetype "application/json", but is not compressed. I've identified that the issue appears to relate to the MimeType. When I include mimeType="*/*", I can see that the response is correctly gzipped. How can I get IIS to compress WITHOUT using a wildcard mimeType? I assume that this issue has something to do with the way that ASP.NET MVC generates content type headers. The CPU usage is well below the dynamic throttling threshold. When I examine the trace logs from IIS, I can see that it fails to compress due to not finding a matching mime type. <httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files" noCompressionForProxies="false"> <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" /> <dynamicTypes> <add mimeType="text/*" enabled="true" /> <add mimeType="message/*" enabled="true" /> <add mimeType="application/x-javascript" enabled="true" /> <add mimeType="application/json" enabled="true" /> </dynamicTypes> <staticTypes> <add mimeType="text/*" enabled="true" /> <add mimeType="message/*" enabled="true" /> <add mimeType="application/x-javascript" enabled="true" /> <add mimeType="application/atom+xml" enabled="true" /> <add mimeType="application/xaml+xml" enabled="true" /> <add mimeType="application/json" enabled="true" /> </staticTypes> </httpCompression>

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  • Java: does the EDT restart or not when an exception is thrown?

    - by NoozNooz42
    (the example code below is self-contained and runnable, you can try it, it won't crash your system :) Tom Hawtin commented on the question here: http://stackoverflow.com/questions/3018165 that: It's unlikely that the EDT would crash. Unchecked exceptions thrown in EDT dispatch are caught, dumped and the thread goes on. Can someone explain me what is going on here (every time you click on the "throw an unchecked exception" button, a divide by zero is performed, on purpose): import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class CrashEDT extends JFrame { public static void main(String[] args) { final CrashEDT frame = new CrashEDT(); frame.addWindowListener(new WindowAdapter() { public void windowClosing( WindowEvent e) { System.exit(0); } }); final JButton jb = new JButton( "throw an unchecked exception" ); jb.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { System.out.println( "Thread ID:" + Thread.currentThread().getId() ); System.out.println( 0 / Math.abs(0) ); } } ); frame.add( jb ); frame.setSize(300, 150); frame.setVisible(true); } } I get the following message (which is what I'd expect): Exception in thread "AWT-EventQueue-0" java.lang.ArithmeticException: / by zero and to me this is an unchecked exception right? You can see that the thread ID is getting incremented every time you trigger the crash. So is the EDT automatically restarted every time an unchecked exception is thrown or are unchecked exceptions "caught, dumped and the thread goes on" like Tom Hawtin commented? What is going on here?

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  • Java 1.4 singleton containing a mutable field

    - by Philippe
    Hi, I'm working on a legacy Java 1.4 project, and I have a factory that instantiates a csv file parser as a singleton. In my csv file parser, however, I have a HashSet that will store objects created from each line of my CSV file. All that will be used by a web application, and users will be uploading CSV files, possibly concurrently. Now my question is : what is the best way to prevent my list of objects to be modified by 2 users ? So far, I'm doing the following : final class MyParser { private File csvFile = null; private static Set myObjects = Collections.synchronizedSet(new HashSet); public synchronized void setFile(File file) { this.csvFile = file; } public void parse() FileReader fr = null; try { fr = new FileReader(csvFile); synchronized(myObjects) { myObjects.clear(); while(...) { // foreach line of my CSV, create a "MyObject" myObjects.add(new MyObject(...)); } } } catch (Exception e) { //... } } } Should I leave the lock only on the myObjects Set, or should I declare the whole parse() method as synchronized ? Also, how should I synchronize - both - the setting of the csvFile and the parsing ? I feel like my actual design is broken because threads could modify the csv file several times while a possibly long parse process is running. I hope I'm being clear enough, because myself am a bit confused on those multi-synchronization issues. Thanks ;-)

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  • review count and rating using an image - schema.org

    - by Joel
    I need some help getting some rich snippets to my site I inserted the review microdata following the instructions given on schema.org here http://schema.org/docs/gs.html#advanced_missing using the star-image for rating and the text for review count, but testing it with the test tool it showed nothing. Example page where we use the microdata for the reviews. and here is what I used <div itemprop="reviews" itemscope itemtype="http://schema.org/AggregateRating"> <A HREF="javascript:an();"><img src="/images/stars/4.5.gif" border=0></a> <meta itemprop="ratingValue" content="4.5" /> <meta itemprop="bestRating" content="5" /> <BR><span class="bottomnavfooter"><A HREF="javascript:an();">Read (<span itemprop="ratingCount">70</span>) Reviews</A </span></div> I then created a static test page and made some change using instructions Google provided here http://www.google.com/support/webmasters/bin/answer.py?answer=172705 (which is different from what I found on schema.org!!) but still the test returned only product name not the price or the reviews. Here is my test page - Can you please see where I'm going wrong Thanks much!!

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  • IoC and dataContext disposing in asp.net mvc 2 application

    - by zerkms
    I have the Global.asax like the code below: public class MvcApplication : System.Web.HttpApplication { public static void RegisterRoutes(RouteCollection routes) { // .... } protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); ControllerBuilder.Current.SetControllerFactory(typeof(IOCControllerFactory)); } } public class IOCControllerFactory : DefaultControllerFactory { private readonly IKernel kernel; public IOCControllerFactory() { kernel = new StandardKernel(new NanocrmContainer()); } protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType) { if (controllerType == null) return base.GetControllerInstance(requestContext, controllerType); var controller = kernel.TryGet(controllerType) as IController; if (controller == null) return base.GetControllerInstance(requestContext, controllerType); var standartController = controller as Controller; if (standartController is IIoCController) ((IIoCController)standartController).SetIoc(kernel); return standartController; } class NanocrmContainer : Ninject.Modules.NinjectModule { public override void Load() { // ... Bind<DomainModel.Entities.db>().ToSelf().InRequestScope().WithConstructorArgument("connection", "Data Source=lims;Initial Catalog=nanocrm;Persist Security Info=True;User ID=***;Password=***"); } } } In this case if somewhere it is the class, defined like: public class UserRepository : IUserRepository { private db dataContext; private IUserGroupRepository userGroupRepository; public UserRepository(db dataContext, IUserGroupRepository userGroupRepository) { this.dataContext = dataContext; this.userGroupRepository = userGroupRepository; } } then the dataContext instance is created (if no one was created in this request scope) by Ninject. So the trouble now is - where to invoke dataContext method .Dispose()?

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  • how to handle base tag target attribute in iphone uiwebview to open new window

    - by user217428
    When the links are supposed to open a new window, iphone uiwebview won't trigger an event when user click these links. We had to use javascript to do some trick to the target attribute of the links. I can handle 'a' tag to open in the '_self' window with the trick without problem. But when I do it the same way with the 'base' tag. it doesn't work. I believe the base target is set by the javascript. But the base tag is in the head, which may be handled by the uiwebview before my javascript executed, so the target change may not reflected in the webkit engine. Could someone please give some suggestion, so I can open the link in the same uiwebview? The following is the sample HTML opened in the uiwebview <html> <head> <base target='_blank'> </head> <body> <a href='http://google.ca'>google</a> </body> </html> The following is the code to be executed in the (void) webViewDidFinishLoad: (UIWebView*)webView static NSString* js = @"" "function bkModifyBaseTargets()" "{" "var allBases = window.document.getElementsByTagName('base');" "if (allBases)" "{" "for (var i = 0; i < allBases.length; i++)" "{" "base = allBases[i];" "target = base.getAttribute('target');" "if (target)" "{" "base.setAttribute('target', '_self');" "}" "}" "}" "}"; [webView stringByEvaluatingJavaScriptFromString: js]; [webView stringByEvaluatingJavaScriptFromString: @"bkModifyBaseTargets()"];

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  • Complex string split in Java

    - by c0mrade
    Consider the following String : 5|12345|value1|value2|value3|value4+5|777|value1|value2|value3|value4?5|777|value1|value2|value3|value4+ Here is how I want to split string, split it with + so I get this result : myArray[0] = "5|12345|value1|value2|value3|value4"; myArray[1] = "5|777|value1|value2|value3|value4?5|777|value1|value2|value3|value4"; if string has doesn't contain char "?" split it with "|" and continue to part II, if string does contain "?" split it and for each part split it with "|" and continue to part II. Here is part II : myObject.setAttribute1(newString[0]); ... myObject.setAttribute4(newString[3]); Here what I've got so far : private static String input = "5|12345|value1|value2|value3|value4+5|777|value1|value2|value3|value4?5|777|value1|value2|value3|value4+"; public void mapObject(String input){ String[] myArray = null; if (input.contains("+")) { myArray = input.split("+"); } else { myArray = new String[1]; myArray[0] = input; } for (int i = 0; i < myArray.length; i++) { String[] secondaryArray = null; String[] myObjectAttribute = null; if (myArray[i].contains("?")) { secondaryArray = temporaryString.myArray[i].split("?"); for (String string : secondaryArray) { myObjectAttribute = string.split("\\|"); } } else { myObjectAttribute = myArray[i].toString().split("\\|"); } myObject.setAttribute1(myObjectAttribute[0]); ... myObject.setAttribute4(myObjectAttribute[3]); System.out.println(myObject.toString()); } Problem : When I split myArray, going trough for with myArray[0], everything set up nice as it should. Then comes the myArray[1], its split into two parts then the second part overrides the value of the first(how do I know that?). I've overridden toString() method of myObject, when I finish I print the set values so I know that it overrides it, does anybody know how can I fix this?

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  • Boost bind with asio::placeholders::error

    - by Leandro
    Why it doesn't work? --- boost_bind.cc --- #include #include #include void func1 (const int& i) { } void func2 (const ::asio::error_code& e) { } int main () { ::boost::function f1 = ::boost::bind (&func1, 1); // it doesn't work! ::boost::function f2 = ::boost::bind (&func2, ::asio::placeholders::error); return 0; } This is the error: while_true@localhost:~ g++ -lpthread boost_bind.cc -o boost_bind In file included from boost_bind.cc:2: /usr/include/boost/bind.hpp: In member function ‘void boost::_bi::list1::operator()(boost::_bi::type, F&, A&, int) [with F = void (*)(const asio::error_code&), A = boost::_bi::list0, A1 = boost::arg (*)()]’: /usr/include/boost/bind/bind_template.hpp:20: instantiated from ‘typename boost::_bi::result_traits::type boost::_bi::bind_t::operator()() [with R = void, F = void (*)(const asio::error_code&), L = boost::_bi::list1 (*)()]’ /usr/include/boost/function/function_template.hpp:152: instantiated from ‘static void boost::detail::function::void_function_obj_invoker0::invoke(boost::detail::function::function_buffer&) [with FunctionObj = boost::_bi::bind_t (*)() , R = void]’ /usr/include/boost/function/function_template.hpp:904: instantiated from ‘void boost::function0::assign_to(Functor) [with Functor = boost::_bi::bind_t (*)() , R = void]’ /usr/include/boost/function/function_template.hpp:720: instantiated from ‘boost::function0::function0(Functor, typename boost::enable_if_c::type) [with Functor = boost::_bi::bind_t (*)() , R = void]’ /usr/include/boost/function/function_template.hpp:1040: instantiated from ‘boost::function::function(Functor, typename boost::enable_if_c::type) [with Functor = boost::_bi::bind_t (*)() , R = void]’ boost_bind.cc:14: instantiated from here /usr/include/boost/bind.hpp:232: error: no match for ‘operator[]’ in ‘a[boost::_bi::storage1 (*)()::a1_ [with int I = 1]]’ while_true@localhost:~

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  • log4net: Creating a logger dynamically, should I worry about anything?

    - by vtortola
    Hi, I need to create loggers dynamically, so with a post from here and the help of reflector I have managed to create loggers dynamically, but I'd like to know if I should worry about something else ... I don't know wich implications can have do it. public static ILog GetDyamicLogger(Guid applicationId) { Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); RollingFileAppender roller = new RollingFileAppender(); roller.LockingModel = new log4net.Appender.FileAppender.MinimalLock(); roller.AppendToFile = true; roller.RollingStyle = RollingFileAppender.RollingMode.Composite; roller.MaxSizeRollBackups = 14; roller.MaximumFileSize = "15000KB"; roller.DatePattern = "yyyyMMdd"; roller.Layout = new log4net.Layout.PatternLayout(); roller.File = "App_Data\\Logs\\"+applicationId.ToString()+"\\debug.log"; roller.StaticLogFileName = true; PatternLayout patternLayout = new PatternLayout(); patternLayout.ConversionPattern = "%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"; patternLayout.ActivateOptions(); roller.Layout = patternLayout; roller.ActivateOptions(); hierarchy.Root.AddAppender(roller); hierarchy.Root.Level = Level.All; hierarchy.Configured = true; DummyLogger dummyILogger = new DummyLogger(applicationId.ToString()); dummyILogger.Hierarchy = hierarchy; dummyILogger.Level = log4net.Core.Level.All; dummyILogger.AddAppender(roller); return new LogImpl(dummyILogger); } internal sealed class DummyLogger : Logger { // Methods internal DummyLogger(string name) : base(name) { } } Cheers.

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  • Getting a binary file from resource in C#

    - by Jesse Knott
    Hello, I am having a bit of a problem, I am trying to get a PDF as a resource in my application. At this point I have a fillable PDF that I have been able to store as a file next to the binary, but now I am trying to embed the PDF as a resource in the binary. byte[] buffer; try { s = typeof(BattleTracker).Assembly.GetManifestResourceStream("libReports.Resources.DAForm1594.pdf"); buffer = new byte[s.Length]; int read = 0; do { read = s.Read(buffer, read, 32768); } while (read > 0); } catch (Exception e) { throw new Exception("Error: could not import report:", e); } // read existing PDF document PdfReader r = new PdfReader( // optimize memory usage buffer, null ); Every time I run the code I get an error saying "Rebuild trailer not found. Original Error: PDF startxref not found" When I was just opening the file via a path to the static file in my directory it worked fine. I have tried using different encodings UTF-8, UTF-32, UTF-7, ASCII, etc etc.... As a side note I had the same problem with getting a Powerpoint file as a resource, I was finally able to fix that problem by converting the Powerpoint to xml and using that. I have considered doing the same for the PDF but I am referencing elements by field name which does not seem to work with XML PDFs. Can anyone help me out with this? Thanks in advance!

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  • Build System with Recursive Dependency Aggregation

    - by radman
    Hi, I recently began setting up my own library and projects using a cross platform build system (generates make files, visual studio solutions/projects etc on demand) and I have run into a problem that has likely been solved already. The issue that I have run into is this: When an application has a dependency that also has dependencies then the application being linked must link the dependency and also all of its sub-dependencies. This proceeds in a recursive fashion e.g. (For arguments sake lets assume that we are dealing exclusively with static libraries.) TopLevelApp.exe dependency_A dependency_A-1 dependency_A-2 dependency_B dependency_B-1 dependency_B-2 So in this example TopLevelApp will need to link dependency_A, dependency_A-1, dependency_A-2 etc and the same for B. I think the responsibility of remembering all of these manually in the target application is pretty sub optimal. There is also the issue of ensuring the same version of the dependency is used across all targets (assuming that some targets depend on the same things, e.g. boost). Now linking all of the libraries is required and there is no way of getting around it. What I am looking for is a build system that manages this for you. So all you have to do is specify that you depend on something and the appropriate dependencies of that library will be pulled in automatically. The build system I have been looking at is premake premake4 which doesn't handle this (as far as I can determine). Does anyone know of a build system that does handle this? and if there isn't then why not?

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  • AST with fixed nodes instead of error nodes in antlr

    - by ahe
    I have an antlr generated Java parser that uses the C target and it works quite well. The problem is I also want it to parse erroneous code and produce a meaningful AST. If I feed it a minimal Java class with one import after which a semicolon is missing it produces two "Tree Error Node" objects where the "import" token and the tokens for the imported class should be. But since it parses the following code correctly and produces the correct nodes for this code it must recover from the error by adding the semicolon or by resyncing. Is there a way to make antlr reflect this fixed input it produces internally in the AST? Or can I at least get the tokens/text that produced the "Tree Node Errors" somehow? In the C targets antlr3commontreeadaptor.c around line 200 the following fragment indicates that the C target only creates dummy error nodes so far: static pANTLR3_BASE_TREE errorNode (pANTLR3_BASE_TREE_ADAPTOR adaptor, pANTLR3_TOKEN_STREAM ctnstream, pANTLR3_COMMON_TOKEN startToken, pANTLR3_COMMON_TOKEN stopToken, pANTLR3_EXCEPTION e) { // Use the supplied common tree node stream to get another tree from the factory // TODO: Look at creating the erronode as in Java, but this is complicated by the // need to track and free the memory allocated to it, so for now, we just // want something in the tree that isn't a NULL pointer. // return adaptor->createTypeText(adaptor, ANTLR3_TOKEN_INVALID, (pANTLR3_UINT8)"Tree Error Node"); } Am I out of luck here and only the error nodes the Java target produces would allow me to retrieve the text of the erroneous nodes?

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  • How to Create Deterministic Guids

    - by desigeek
    In our application we are creating Xml files with an attribute that has a Guid value. This value needed to be consistent between file upgrades. So even if everything else in the file changes, the guid value for the attribute should remain the same. One obvious solution was to create a static dictionary with the filename and the Guids to be used for them. Then whenever we generate the file, we look up the dictionary for the filename and use the corresponding guid. But this is not feasible coz we might scale to 100's of files and didnt want to maintain big list of guids. So another approach was to make the Guid the same based on the path of the file. Since our file paths and application directory structure are unique, the Guid should be unique for that path. So each time we run an upgrade, the file gets the same guid based on its path. I found one cool way to generate such 'Deterministic Guids' (Thanks Elton Stoneman). It basically does this: private Guid GetDeterministicGuid(string input) { //use MD5 hash to get a 16-byte hash of the string: MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider(); byte[] inputBytes = Encoding.Default.GetBytes(input); byte[] hashBytes = provider.ComputeHash(inputBytes); //generate a guid from the hash: Guid hashGuid = new Guid(hashBytes); return hashGuid; } So given a string, the Guid will always be the same. Are there any other approaches or recommended ways to doing this? What are the pros or cons of that method?

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  • C# Windows Service

    - by Goober
    Scenario I've created a windows service, but whenever I start it, it stops immediately. The service was concieved from a console application that used to subscribe to an event and watch processes on a server. If anything happened to process (i.e. It was killed), then the event would trigger the process to be restarted. The reason I'm telling you this is because the original code used to look like this: Original Console App Code: static void Main(string[] args) { StartProcess sp = new StartProcess(); //Note the readline that means the application sits here waiting for an event! Console.ReadLine(); } Now that this code has been turned into a Windows Service, it is essentially EXACTLY THE SAME. However, the service does not sit there waiting, even with the readline, it just ends..... New Windows Service Code: protected override void OnStart(string[] args) { ProcessMonitor pm = new ProcessMonitor(); Console.ReadLine(); } Thoughts Since the functionality is entirely encapsulated within this single class (It quite literally starts, sets up some events and waits) - How can I get the service to actually sit there and just wait? It seems to be ignoring the readline. However this works perfectly as a console application, it is just far more convenient to have it as a service.

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  • Precompiled headers question

    - by Kotti
    Hello! I am right now reorganizing my project and what recently was a simple application now became a pair of C++ projects - static library and real application. I would like to share one precompiled header between two projects, but face some troubles with setting up the .pdb file paths. Assume my first project is called Library and builds it's .lib file with a corresponding Library.pdb file. Now, the second project is called Application and builds everything into the same folder (.exe and another Application.pdb file). Right now my both projects create their own precompiled headers file (Library.pch and Application.pch) based on one actual header file. It works, but I think it's a waste of time and I also think there should be a way to share one precompiled header between two projects. If in my Application project I try to set the Use Precompiled Header (/Yu) option and set it to Library.pch, it wouldn't work, because of the following error: error C2858: command-line option 'program database name "Application.pdb" inconsistent with precompiled header, which used "Library.pdb". So, does anyone know some trick or way to share one precompiled header between two projects preserving proper debug information?

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  • How to manage a One-To-One and a One-To-Many of same type as unidirectional mapping?

    - by user1652438
    I'm trying to implement a model for private messages between two or more users. That means I've got two Entities: User PrivateMessage The User model shouldn't be edited, so I'm trying to set up an unidirectional relationship: @Entity (name = "User") @Table (name = "user") public class User implements Serializable { @Id String username; String password; // something like this ... } The PrivateMessage Model addresses multiple receivers and has exactly one sender. So I need something like this: @Entity (name = "PrivateMessage") @Table (name = "privateMessage") @XmlRootElement @XmlType (propOrder = {"id", "sender", "receivers", "title", "text", "date", "read"}) public class PrivateMessage implements Serializable { private static final long serialVersionUID = -9126766942868177246L; @Id @GeneratedValue private Long id; @NotNull private String title; @NotNull private String text; @NotNull @Temporal(TemporalType.TIMESTAMP) private Date date; @NotNull private boolean read; @NotNull @ElementCollection(fetch = FetchType.EAGER, targetClass = User.class) private Set<User> receivers; @NotNull @OneToOne private User sender; // and so on } The according 'privateMessage' table won't be generated and just the relationship between the PM and the many receivers is satisfied. I'm confused about this. Everytime I try to set a 'mappedBy' attribute, my IDE marks it as an error. It seems to be a problem that the User-entity isn't aware of the private message which maps it. What am I doing wrong here? I've solved some situation similar to this one, but none of those solutions will work here. Thanks in advance!

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  • Improve Efficiency for This Text Processing Code

    - by johnv
    I am writing a program that counts the number of words in a text file which is already in lowercase and separated by spaces. I want to use a dictionary and only count the word IF it's within the dictionary. The problem is the dictionary is quite large (~100,000 words) and each text document has also ~50,000 words. As such, the codes that I wrote below gets very slow (takes about 15 sec to process one document on a quad i7 machine). I'm wondering if there's something wrong with my coding and if the efficiency of the program can be improved. Thanks so much for your help. Code below: public static string WordCount(string countInput) { string[] keywords = ReadDic(); /* read dictionary txt file*/ /*then reads the main text file*/ Dictionary<string, int> dict = ReadFile(countInput).Split(' ') .Select(c => c) .Where(c => keywords.Contains(c)) .GroupBy(c => c) .Select(g => new { word = g.Key, count = g.Count() }) .OrderBy(g => g.word) .ToDictionary(d => d.word, d => d.count); int s = dict.Sum(e => e.Value); string k = s.ToString(); return k; }

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