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  • Can overloading is possible with two version of function, constant member function and function with

    - by GG
    Hello, I just came across various overloading methods like type of parameter passed, varying number of parameters, return type etc. I just want to know that can I overload a function with following two version //function which can modify member String& MyClass::doSomething(); //constant member function String& MyClass::doSomething() const; Please let me know the reason behind it. Thanks, GG

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  • How to use Ninject with XNA?

    - by Rosarch
    I'm having difficulty integrating Ninject with XNA. static class Program { /** * The main entry point for the application. */ static void Main(string[] args) { IKernel kernel = new StandardKernel(NinjectModuleManager.GetModules()); CachedContentLoader content = kernel.Get<CachedContentLoader>(); // stack overflow here MasterEngine game = kernel.Get<MasterEngine>(); game.Run(); } } // constructor for the game public MasterEngine(IKernel kernel) : base(kernel) { this.inputReader = kernel.Get<IInputReader>(); graphicsDeviceManager = kernel.Get<GraphicsDeviceManager>(); Components.Add(kernel.Get<GamerServicesComponent>()); // Tell the loader to look for all files relative to the "Content" directory. Assets = kernel.Get<CachedContentLoader>(); //Sets dimensions of the game window graphicsDeviceManager.PreferredBackBufferWidth = 800; graphicsDeviceManager.PreferredBackBufferHeight = 600; graphicsDeviceManager.ApplyChanges(); IsMouseVisible = false; } Ninject.cs: using System; using System.Collections.Generic; using System.Linq; using System.Text; using Ninject.Modules; using HWAlphaRelease.Controller; using Microsoft.Xna.Framework; using Nuclex.DependencyInjection.Demo.Scaffolding; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.Graphics; namespace HWAlphaRelease { public static class NinjectModuleManager { public static NinjectModule[] GetModules() { return new NinjectModule[1] { new GameModule() }; } /// <summary>Dependency injection rules for the main game instance</summary> public class GameModule : NinjectModule { #region class ServiceProviderAdapter /// <summary>Delegates to the game's built-in service provider</summary> /// <remarks> /// <para> /// When a class' constructor requires an IServiceProvider, the dependency /// injector cannot just construct a new one and wouldn't know that it has /// to create an instance of the Game class (or take it from the existing /// Game instance). /// </para> /// <para> /// The solution, then, is this small adapter that takes a Game instance /// and acts as if it was a freely constructable IServiceProvider implementation /// while in reality, it delegates all lookups to the Game's service container. /// </para> /// </remarks> private class ServiceProviderAdapter : IServiceProvider { /// <summary>Initializes a new service provider adapter for the game</summary> /// <param name="game">Game the service provider will be taken from</param> public ServiceProviderAdapter(Game game) { this.gameServices = game.Services; } /// <summary>Retrieves a service from the game service container</summary> /// <param name="serviceType">Type of the service that will be retrieved</param> /// <returns>The service that has been requested</returns> public object GetService(Type serviceType) { return this.gameServices; } /// <summary>Game services container of the Game instance</summary> private GameServiceContainer gameServices; } #endregion // class ServiceProviderAdapter #region class ContentManagerAdapter /// <summary>Delegates to the game's built-in ContentManager</summary> /// <remarks> /// This provides shared access to the game's ContentManager. A dependency /// injected class only needs to require the ISharedContentService in its /// constructor and the dependency injector will automatically resolve it /// to this adapter, which delegates to the Game's built-in content manager. /// </remarks> private class ContentManagerAdapter : ISharedContentService { /// <summary>Initializes a new shared content manager adapter</summary> /// <param name="game">Game the content manager will be taken from</param> public ContentManagerAdapter(Game game) { this.contentManager = game.Content; } /// <summary>Loads or accesses shared game content</summary> /// <typeparam name="AssetType">Type of the asset to be loaded or accessed</typeparam> /// <param name="assetName">Path and name of the requested asset</param> /// <returns>The requested asset from the the shared game content store</returns> public AssetType Load<AssetType>(string assetName) { return this.contentManager.Load<AssetType>(assetName); } /// <summary>The content manager this instance delegates to</summary> private ContentManager contentManager; } #endregion // class ContentManagerAdapter /// <summary>Initializes the dependency configuration</summary> public override void Load() { // Allows access to the game class for any components with a dependency // on the 'Game' or 'DependencyInjectionGame' classes. Bind<MasterEngine>().ToSelf().InSingletonScope(); Bind<NinjectGame>().To<MasterEngine>().InSingletonScope(); Bind<Game>().To<MasterEngine>().InSingletonScope(); // Let the dependency injector construct a graphics device manager for // all components depending on the IGraphicsDeviceService and // IGraphicsDeviceManager interfaces Bind<GraphicsDeviceManager>().ToSelf().InSingletonScope(); Bind<IGraphicsDeviceService>().To<GraphicsDeviceManager>().InSingletonScope(); Bind<IGraphicsDeviceManager>().To<GraphicsDeviceManager>().InSingletonScope(); // Some clever adapters that hand out the Game's IServiceProvider and allow // access to its built-in ContentManager Bind<IServiceProvider>().To<ServiceProviderAdapter>().InSingletonScope(); Bind<ISharedContentService>().To<ContentManagerAdapter>().InSingletonScope(); Bind<IInputReader>().To<UserInputReader>().InSingletonScope().WithConstructorArgument("keyMapping", Constants.DEFAULT_KEY_MAPPING); Bind<CachedContentLoader>().ToSelf().InSingletonScope().WithConstructorArgument("rootDir", "Content"); } } } } NinjectGame.cs /// <summary>Base class for Games making use of Ninject</summary> public class NinjectGame : Game { /// <summary>Initializes a new Ninject game instance</summary> /// <param name="kernel">Kernel the game has been created by</param> public NinjectGame(IKernel kernel) { Type ownType = this.GetType(); if(ownType != typeof(Game)) { kernel.Bind<NinjectGame>().To<MasterEngine>().InSingletonScope(); } kernel.Bind<Game>().To<NinjectGame>().InSingletonScope(); } } } // namespace Nuclex.DependencyInjection.Demo.Scaffolding When I try to get the CachedContentLoader, I get a stack overflow exception. I'm basing this off of this tutorial, but I really have no idea what I'm doing. Help?

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  • How to setup an hibernate project using annotations compliant with JPA2.0

    - by phmr
    I would like to setup an hibernate project, for this I use the lastest hibernate 3.5-Final. BTW my IDE is Netbeans. The problem is that each time a run the application, it seems to start from a fresh database whatever db backend I use (I tried hsqldb & sqlite): here is my persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> <persistence-unit name="PMMPU" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <class>model.Extrait</class> <class>model.Mot</class> <class>model.Prefixe</class> <class>model.Suffixe</class> <class>model.Texte</class> <properties> <property name="hibernate.dialect" value="dialect.SQLiteDialect"/> <property name="hibernate.connection.username" value=""/> <property name="hibernate.connection.driver_class" value="org.sqlite.JDBC"/> <property name="hibernate.connection.password" value=""/> <property name="hibernate.connection.url" value="jdbc:sqlite:test.db"/> <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/> <property name="hibernate.hbm2ddl.auto" value="update"/> </properties> </persistence-unit> </persistence> I tried to change hibernate.hbm2ddl.auto value. I got a HibernateUtil class which takes care of creating the emf & em: public class HibernateUtil { private static EntityManagerFactory emf = null; private static EntityManager em = null; public static EntityManagerFactory getEmf() { if(emf == null) emf = Persistence.createEntityManagerFactory("PMMPU"); return emf; } public static EntityManager getEm() { if(em == null) em = getEmf().createEntityManager(); return em; } What did a I do wrong ? edit1: further research with mysql lead me to think that the problem is related to sqlite & hsqldb interaction with hibernate 3.5

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  • SharpPcap - A Packet Capture getting messesge problem.

    - by Eyla
    I trying to capture packets using SharpPcap library. I'm able to return the packets details but I'm having problem to get what the message content inside the packet. the packet using .Data to return the message and when I use it it is returning (System.Byte[]). here is the library website: http://www.codeproject.com/KB/IP/sharppcap.aspx here is my code: string packetData; private void packetCapturingThreadMethod() { Packet packet = null; int countOfPacketCaptures = 0; while ((packet = device.GetNextPacket()) != null) { packet = device.GetNextPacket(); if (packet is TCPPacket) { TCPPacket tcp = (TCPPacket)packet; myPacket tempPacket = new myPacket(); tempPacket.packetType = "TCP"; tempPacket.sourceAddress = Convert.ToString(tcp.SourceAddress); tempPacket.destinationAddress = Convert.ToString(tcp.DestinationAddress); tempPacket.sourcePort = Convert.ToString(tcp.SourcePort); tempPacket.destinationPort = Convert.ToString(tcp.DestinationPort); tempPacket.packetMessage = Convert.ToString(tcp.Data); packetsList.Add(tempPacket); packetData = "Type= TCP" + " Source Address = "+ Convert.ToString(tcp.SourceAddress)+ " Destination Address =" +Convert.ToString(tcp.DestinationAddress)+ " SourcePort =" + Convert.ToString(tcp.SourcePort)+ " SourcePort =" +Convert.ToString(tcp.DestinationPort)+ " Messeage =" + Convert.ToString(tcp.Data); txtpackets.Invoke(new UpdatetxtpacketsCallback(this.Updatetxtpackets), new object[] { packetData }); string[] row = { packetsList[countOfPacketCaptures].packetType, packetsList[countOfPacketCaptures].sourceAddress, packetsList[countOfPacketCaptures].destinationAddress, packetsList[countOfPacketCaptures].sourcePort, packetsList[countOfPacketCaptures].destinationPort, packetsList[countOfPacketCaptures].packetMessage }; try { //dgwPacketInfo.Rows.Add(row); countOfPacketCaptures++; //lblCapturesLabels.Text = Convert.ToString(countOfPacketCaptures); } catch (Exception e) { } } else if (packet is UDPPacket) { UDPPacket udp = (UDPPacket)packet; myPacket tempPacket = new myPacket(); tempPacket.packetType = "UDP"; tempPacket.sourceAddress = Convert.ToString(udp.SourceAddress); tempPacket.destinationAddress = Convert.ToString(udp.DestinationAddress); tempPacket.sourcePort = Convert.ToString(udp.SourcePort); tempPacket.destinationPort = Convert.ToString(udp.DestinationPort); tempPacket.packetMessage = udp.Data.ToArray() + "\n"; packetsList.Add(tempPacket); packetData = "Type= UDP" + " Source Address = "+ Convert.ToString(udp.SourceAddress)+ " Destination Address =" +Convert.ToString(udp.DestinationAddress)+ " SourcePort =" + Convert.ToString(udp.SourcePort)+ " SourcePort =" +Convert.ToString(udp.DestinationPort)+ " Messeage =" + udp.Data.ToArray() + "\n"; string[] row = { packetsList[countOfPacketCaptures].packetType, packetsList[countOfPacketCaptures].sourceAddress, packetsList[countOfPacketCaptures].destinationAddress, packetsList[countOfPacketCaptures].sourcePort, packetsList[countOfPacketCaptures].destinationPort, packetsList[countOfPacketCaptures].packetMessage }; try { //dgwPacketInfo.Rows.Add(row); //countOfPacketCaptures++; //lblCapturesLabels.Text = Convert.ToString(countOfPacketCaptures); txtpackets.Invoke(new UpdatetxtpacketsCallback(this.Updatetxtpackets), new object[] { packetData }); } catch (Exception e) { } } } }

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  • How to create a view controller that supports both landscape and portrait, but does not rotate between them (keeps its initial orientation)

    - by Joshua J. McKinnon
    I want to create a view controller that supports both landscape and portrait orientations, but that can not rotate between them - that is, the view should retain its original orientation. I have tried creating an ivar initialOrientation and setting it in -viewDidAppear with initialOrientation = self.interfaceOrientation; then - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == initialOrientation); } But that causes confusing problems (presumably because -shouldAutorotateToInterfaceOrientation is called before -viewDidAppear). How can I lock the orientation to its original orientation?

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  • Python error with IndentationError: unindent does not match any outer indentation level

    - by Vikrant Cornelio
    from tweepy import Stream from tweepy import OAuthHandler from tweepy.streaming import StreamListener ckey='W1VPPrau42ENAWP1EnDGpQ' csecret='qxtY2rYNN0QT0Ndl1L4PJhHcHuWRJWlEuVnHFDRSE' atoken='1577208120-B8vGWIquxbmscb9xdu5AUzENv09kGAJUCddJXAO' asecret='tc9Or4XoOugeLPhwmCLwR4XK8oUXQHqnl10VnQpTBzdNR' class listener(StreamListener): def on_data(self,data): print data return True def on_error(self,status): print status auth=OAuthHandler(ckey,csecret) auth.set_access_token(atoken,asecret) twitterStream=Stream(auth,listener()) twitterStream.filter(track=["car"]) I typed this in my Python shell i got an error...the error was IndentationError: unindent does not match any outer indentation level..Please help me!!!!!!!!!!!

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  • Bluepay Security Error

    - by Shima
    Hi all, I am trying to implement bluepay payment service in my PHP project,but I'm getting a return message of "Security Error". Here's the exact debug page results: Response: STATUS=E&MESSAGE=SECURITY%20ERROR Trans Id: Status: E AVS Resp: CVV2 Resp: Auth Code: Message: SECURITY ERROR Rebid: I'm using the correct merchant ID and Secret Key. Does anyone has any idea!!!! Please help me!

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  • Using tslib (touchscreen input) with DirectFB on embedded system (gumstix overo)

    - by emi1faber
    I'm attempting to use tslib with DirectFB on the gumstix Overo. Everything seems to be compiled correctly, as when DirectFB starts up, I get messages saying "Started 'tslib Input' ... DirectFB/Input: tslib touchscreen 0 0.1 (tslib)" etc. However, I haven't been able to find any example code showing how one reads the X-Y coordinates of a touchscreen press. Is there any example code out there to initialize the touchscreen and return the coordinates of a touchscreen press? Thanks in advance, Ben

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  • asp.net MVC binding specific model results in error for post request

    - by Tomh
    Hi I'm having the following two actions defined in my controller [Authorize] [HttpGet] public ActionResult Edit() { ViewData.Model = HttpContext.User.Identity; return View(); } [Authorize] [HttpPost] public ActionResult Edit(User model) { return View(); } However if I post my editted data to the second action I get the following error: Server Error in '/' Application. An item with the same key has already been added. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: An item with the same key has already been added. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. I tried several things like renaming parameters and removing editable fields, but it seems the model type is the problem, what could be wrong? Stack Trace: [ArgumentException: An item with the same key has already been added.] System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +51 System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +7464444 System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) +270 System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, IEqualityComparer`1 comparer) +102 System.Web.Mvc.ModelBindingContext.get_PropertyMetadata() +157 System.Web.Mvc.DefaultModelBinder.BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) +158 System.Web.Mvc.DefaultModelBinder.BindProperties(ControllerContext controllerContext, ModelBindingContext bindingContext) +90 System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +50 System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +1048 System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +280 System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +257 System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +109 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +314 System.Web.Mvc.Controller.ExecuteCore() +105 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +39 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +34 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21 System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +59 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +44 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +7 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8679150 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

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  • queries in django

    - by Hulk
    How to query Employee to get all the address related to the employee, Employee.Add.all() doe not work.. class Employee(): Add = models.ManyToManyField(Address) parent = models.ManyToManyField(Parent, blank=True, null=True) class Address(models.Model): address_emp = models.CharField(max_length=512) description = models.TextField() def __unicode__(self): return self.name()

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  • Symfony 1.4: Custom error message for CSRF in forms

    - by Tom
    Hi, Can anyone tell me where/how to customise the CSRF token error message for forms in Symfony 1.4. I'm using sfDoctrineGuard for logins and in this form particularly, whenever a session runs out and you still have the page open, it throws a very user-unfriendly error: "CSRF attack detected". Something like "This session has expired. Please return to the home page and try again" sounds better. What's the right way to do this in the form class? Thanks.

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  • ASP.NET web forms as ASP.NET MVC

    - by lopkiju
    I am sorry for possible misleading about the title, but I have no idea for a proper title. Feel free to edit. Anyway, I am using ASP.NET Web Forms, and maybe this isn't how web forms is intended to be used, but I like to construct and populate HTML elements manually. It gives me more control. I don't use DataBinding and that kind of stuff. I use SqlConnection, SqlCommand and SqlDataReader, set SQL string etc. and read the data from the DataReader. Old school if you like. :) I do create WebControls so that I don't have to copy-paste every time I need some control, but mostly, I need WebControls to render as HTML so I can append that HTML into some other function that renders the final output with the control inside. I know I can render a control with control.RenderControl(writer), but this can only be done in (pre)Render or RenderContents overrides. For example. I have a dal.cs file where is stored all static functions and voids that communicate with the database. Functions mostly return string so that it can be appended into some other function to render the final result. The reason I am doing like this is that I want to separate the coding from the HTML as much as I can so that I don't do <% while (dataReader.Read()) % in HTML and display the data. I moved this into a CodeBehind. I also use this functions to render in the HttpHandler for AJAX response. That works perfectly, but when I want to add a control (ASP.NET Server control (.cs extension, not .ascx)) I don't know how to do that, so I see my self writing the same control as function that returns string or another function inside that control that returns string and replaces a job that would RenderContents do, so that I can call that function when I need control to be appended into a another string. I know this may not be a very good practice. As I see all the tutorials/videos about the ASP.NET MVC, I think it suite my needs as with the MVC you have to construct everything (or most of it) by your self, which I am already doing right now with web forms. After this long intro, I want to ask how can I build my controls so I can use them as I mentioned (return string) or I have to forget about server controls and build the controls as functions and used them that way? Is that even possible with ASP.NET Server Controls (.cs extension) or am I right when I said that I am not using it right. To be clear, I am talking about how to properly use a web forms, but to avoid data binders because I want to construct everything by my self (render HTML in Code Behind). Someone might think that I am appending strings like "some " + "string", which I am not. I am using StringBuilder for that so there's no slowness. Every opinion is welcome.

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  • Webservice returns java.lang.reflect.InvocationTargetException

    - by Damian
    Hi, I am receiving the above message when making a request to a java webservice. We originally created a Java Console application and manually submitted an xml file. When running this as a Java Application the response is successfully created and displayed by using System.out.println. We are creating the web service by selecting the java file that contains the methods and choosing "create webservice" specifying the dynamic project that the webservice is to be created in and the methods to be exposed. What the application is doing is taking an xml file and unmarshalling this to an object using: public static Object unmarshalToObject(Class classToBeBound, String xmlRequest) { Object obj = new Object(); try { JAXBContext jc = JAXBContext.newInstance(classToBeBound); Unmarshaller um = jc.createUnmarshaller(); obj = um.unmarshal(new StringReader(xmlRequest)); } catch (Exception e) { e.printStackTrace() } return obj; } Some processing is carried out on the file and then an object is marshalled to xml as follows: public static String marshalToXML(Object data) { StringWriter sw = new StringWriter(); try { logger.info("Create new Marshall"); JAXBContext jc = JAXBContext.newInstance("ContextPathName"); logger.info("Marshalled to xmlObjects"); Marshaller marshaller = jc.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true); marshaller.marshal(data, sw); } catch (Exception e) { logException(logger, e); } return sw.toString(); } The following is the line of code that seems to be causing an issue as the logger displays the message prior to this: JAXBContext jc = JAXBContext.newInstance("ContextPathName"); The webservice never gets to the next line - the following is the body of the SOAP message: <soapenv:Fault> <faultcode>soapenv:Server.userException</faultcode> <faultstring>java.lang.reflect.InvocationTargetException</faultstring> <detail> <ns1:hostname xmlns:ns1="http://xml.apache.org/axis/">servername</ns1:hostname> </detail> </soapenv:Fault> I have added Try/Catch around this section of code even as far as looking for JAXBExceptions but this does not seem to catch anything - nor does the general exception. This issue does not occur when running the console application. The build path for this includes the following contents of sun\jwsdp-2.0\jaxb\lib: jaxb-api.jar jsr173_1.0_api.jar jaxb-impl.jar I have added these to the lib folder in the WEB-INF file of the dynamic project. I am running the webservice in JBuilder 2008 R2 and using SOAPUI to submit the request - this points to the wsdl generated when creating the webservice. If anyone has any help or ideas on how to solve this could they please reply - thanks for taking the time to read this post!

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  • How to use MBSA in C#?

    - by programmerist
    i try to use some vulnarability scanner on my network(computer, server,switch etc.). i think a scanner like MBSA return some data how to get these data and how to show some datatables to user in C#. I want to make a plugin or web or win App via C#?

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  • Django QuerySet ordering by number of reverse ForeignKey matches

    - by msanders
    I have the following Django models: class Foo(models.Model): title = models.CharField(_(u'Title'), max_length=600) class Bar(models.Model): foo = models.ForeignKey(Foo) eg_id = models.PositiveIntegerField(_(u'Example ID'), default=0) I wish to return a list of Foo objects which have a reverse relationship with Bar objects that have a eg_id value contained in a list of values. So I have: id_list = [7, 8, 9, 10] qs = Foo.objects.filter(bar__eg_id__in=id_list) How do I order the matching Foo objects according to the number of related Bar objects which have an eg_id value in the id_list?

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  • Java Singleton Pattern

    - by Spencer
    I'm used the Singleton Design Pattern public class Singleton { private static final Singleton INSTANCE = new Singleton(); // Private constructor prevents instantiation from other classes private Singleton() {} public static Singleton getInstance() { return INSTANCE; } } My question is how do I create an object of class Singleton in another class? I've tried: Singleton singleton = new Singleton(); // error - constructor is private Singleton singleton = Singleton.getInstance(); // error - non-static method cannot be referenced from a static context What is the correct code? Thanks, Spencer

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  • jquery load not loading in IE6

    - by Moak
    I got a simple jquery script workin on all but IE j('.slide').click(function(){ j('#content').load('/menu.php'); return false; }); Here's the url http://identitykit.gotdns.org/ it's valid xhtml and all other similar questions don't answer my problem. menu.php starts with <?php header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1 header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past ?>

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  • Problem with JOGL and Framebuffer Render-to-texture: Invalid Framebuffer Operation Error

    - by quadelirus
    Okay, so I am trying to render a scene to a small 32x32 texture and ran into problems. I get an "invalid framebuffer operation" error when I try to actually draw anything to the texture. I have simplified the code below so that it simply tries to render a quad to a texture and then bind that quad as a texture for another quad that is rendered to the screen. So my question is this... where is the error? This is using JOGL 1.1.1. The error occurs at Checkpoint2 in the code. import java.awt.event.*; import javax.media.opengl.*; import javax.media.opengl.glu.*; import javax.swing.JFrame; import java.nio.*; public class Main extends JFrame implements GLEventListener, KeyListener, MouseListener, MouseMotionListener, ActionListener{ /* GL related variables */ private final GLCanvas canvas; private GL gl; private GLU glu; private int winW = 600, winH = 600; private int texRender_FBO; private int texRender_RB; private int texRender_32x32; public static void main(String args[]) { new Main(); } /* creates OpenGL window */ public Main() { super("Problem Child"); canvas = new GLCanvas(); canvas.addGLEventListener(this); canvas.addKeyListener(this); canvas.addMouseListener(this); canvas.addMouseMotionListener(this); getContentPane().add(canvas); setSize(winW, winH); setLocationRelativeTo(null); setDefaultCloseOperation(EXIT_ON_CLOSE); setVisible(true); canvas.requestFocus(); } /* gl display function */ public void display(GLAutoDrawable drawable) { gl.glBindFramebufferEXT(GL.GL_FRAMEBUFFER_EXT, this.texRender_FBO); gl.glPushAttrib(GL.GL_VIEWPORT_BIT); gl.glViewport(0, 0, 32, 32); gl.glClearColor(1.f, 0.f, 0.f, 1.f); System.out.print("Checkpoint1: "); outputError(); gl.glBegin(GL.GL_QUADS); { //gl.glTexCoord2f(0.0f, 0.0f); gl.glColor3f(1.f, 0.f, 0.f); gl.glVertex3f(0.0f, 1.0f, 1.0f); //gl.glTexCoord2f(1.0f, 0.0f); gl.glColor3f(1.f, 1.f, 0.f); gl.glVertex3f(1.0f, 1.0f, 1.0f); //gl.glTexCoord2f(1.0f, 1.0f); gl.glColor3f(1.f, 1.f, 1.f); gl.glVertex3f(1.0f, 0.0f, 1.0f); //gl.glTexCoord2f(0.0f, 1.0f); gl.glColor3f(1.f, 0.f, 1.f); gl.glVertex3f(0.0f, 0.0f, 1.0f); } gl.glEnd(); System.out.print("Checkpoint2: "); outputError(); //Here I get an invalid framebuffer operation gl.glPopAttrib(); gl.glBindFramebufferEXT(GL.GL_FRAMEBUFFER_EXT, 0); gl.glClearColor(0.f, 0.f, 0.f, 1.f); gl.glClear(GL.GL_COLOR_BUFFER_BIT); gl.glColor3f(1.f, 1.f, 1.f); gl.glBindTexture(GL.GL_TEXTURE_1D, this.texRender_32x32); gl.glBegin(GL.GL_QUADS); { gl.glTexCoord2f(0.0f, 0.0f); //gl.glColor3f(1.f, 0.f, 0.f); gl.glVertex3f(0.0f, 1.0f, 1.0f); gl.glTexCoord2f(1.0f, 0.0f); //gl.glColor3f(1.f, 1.f, 0.f); gl.glVertex3f(1.0f, 1.0f, 1.0f); gl.glTexCoord2f(1.0f, 1.0f); //gl.glColor3f(1.f, 1.f, 1.f); gl.glVertex3f(1.0f, 0.0f, 1.0f); gl.glTexCoord2f(0.0f, 1.0f); //gl.glColor3f(1.f, 0.f, 1.f); gl.glVertex3f(0.0f, 0.0f, 1.0f); } gl.glEnd(); } /* initialize GL */ public void init(GLAutoDrawable drawable) { gl = drawable.getGL(); glu = new GLU(); gl.glClearColor(.3f, .3f, .3f, 1f); gl.glClearDepth(1.0f); gl.glMatrixMode(GL.GL_PROJECTION); gl.glLoadIdentity(); gl.glOrtho(0, 1, 0, 1, -10, 10); gl.glMatrixMode(GL.GL_MODELVIEW); //Set up the 32x32 texture this.texRender_FBO = genFBO(gl); gl.glBindFramebufferEXT(GL.GL_FRAMEBUFFER_EXT, this.texRender_FBO); this.texRender_32x32 = genTexture(gl); gl.glBindTexture(GL.GL_TEXTURE_2D, this.texRender_32x32); gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGB_FLOAT32_ATI, 32, 32, 0, GL.GL_RGB, GL.GL_FLOAT, null); gl.glFramebufferTexture2DEXT(GL.GL_FRAMEBUFFER_EXT, GL.GL_COLOR_ATTACHMENT0_EXT, GL.GL_TEXTURE_2D, this.texRender_32x32, 0); //gl.glDrawBuffer(GL.GL_COLOR_ATTACHMENT0_EXT); this.texRender_RB = genRB(gl); gl.glBindRenderbufferEXT(GL.GL_RENDERBUFFER_EXT, this.texRender_RB); gl.glRenderbufferStorageEXT(GL.GL_RENDERBUFFER_EXT, GL.GL_DEPTH_COMPONENT24, 32, 32); gl.glFramebufferRenderbufferEXT(GL.GL_FRAMEBUFFER_EXT, GL.GL_DEPTH_ATTACHMENT_EXT, GL.GL_RENDERBUFFER_EXT, this.texRender_RB); gl.glBindFramebufferEXT(GL.GL_FRAMEBUFFER_EXT, 0); gl.glBindRenderbufferEXT(GL.GL_RENDERBUFFER_EXT, 0); outputError(); } private void outputError() { int c; if ((c = gl.glGetError()) != GL.GL_NO_ERROR) System.out.println(glu.gluErrorString(c)); } private int genRB(GL gl) { int[] array = new int[1]; IntBuffer ib = IntBuffer.wrap(array); gl.glGenRenderbuffersEXT(1, ib); return ib.get(0); } private int genFBO(GL gl) { int[] array = new int[1]; IntBuffer ib = IntBuffer.wrap(array); gl.glGenFramebuffersEXT(1, ib); return ib.get(0); } private int genTexture(GL gl) { final int[] tmp = new int[1]; gl.glGenTextures(1, tmp, 0); return tmp[0]; } /* mouse and keyboard callback functions */ public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { winW = width; winH = height; gl.glViewport(0, 0, width, height); } //Sorry about these, I just had to delete massive amounts of code to boil this thing down and these are hangers-on public void mousePressed(MouseEvent e) {} public void mouseDragged(MouseEvent e) {} public void mouseReleased(MouseEvent e) {} public void keyPressed(KeyEvent e) {} public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) { } public void keyTyped(KeyEvent e) { } public void keyReleased(KeyEvent e) { } public void mouseMoved(MouseEvent e) { } public void actionPerformed(ActionEvent e) { } public void mouseClicked(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } }

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  • TTLauncherItem: change badge immediately (or: how to refresh TTLauncherView)

    - by vikingosegundo
    I have a TTLauncherView with some TTLauncherItems. These show badges, representing messages from the network. I set the badges in viewWillAppear:, so if I switch to another view and then return, the correct badges are shown. But I want to update the badges as soon a message comes in. Calling setNeedsDisplay on TTLauncherView doesn't help? How can I refresh the TTLauncherView? in my MessageReceiver class I do this: TTNavigator* navigator = [TTNavigator navigator]; [(OverviewController *)[navigator viewControllerForURL:@"tt://launcher"] reloadLauncherView] ; My TTViewController-derived OverviewController @implementation OverviewController - (id)init { if (self = [super init]) { self.title = OverviewTitle; } return self; } - (void)dealloc { [items release]; [overView release]; [super dealloc]; } -(void)viewDidLoad { [super viewDidLoad]; overView = [[TTLauncherView alloc] initWithFrame:self.view.bounds]; overView.backgroundColor = [UIColor whiteColor]; overView.delegate = self; overView.columnCount = 4; items = [[NSMutableArray alloc] init]; for(int i = 1; i <= NumberOfBars; ++i){ NSString *barID = [NSString stringWithFormat:NameFormat, IDPrefix, i]; TTLauncherItem *item = [[[TTLauncherItem alloc] initWithTitle:barID image:LogoPath URL:[NSString stringWithFormat:@"tt://item/%d", i] canDelete:NO] autorelease]; [barItems addObject: item]; } overView.pages = [NSArray arrayWithObject:items]; [self.view addSubview:overView]; } -(void)viewWillAppear:(BOOL)animated { for(int i = 0; i <[barItems count]; i++){ TTLauncherItem *item = [items objectAtIndex:i]; NSString *barID = [NSString stringWithFormat:NameFormat, IDPrefix, i+1]; P1LOrderDispatcher *dispatcher = [OrderDispatcher sharedInstance]; P1LBarInbox *barInbox = [dispatcher.barInboxMap objectForKey:barID]; item.badgeNumber = [[barInbox ordersWithState:OrderState_New]count]; } [super viewWillAppear:animated]; } - (void)launcherView:(TTLauncherView*)launcher didSelectItem:(TTLauncherItem*)item { TTDPRINT(@"%@", item); TTNavigator *navigator = [TTNavigator navigator]; [navigator openURLAction:[TTURLAction actionWithURLPath:item.URL]]; } -(void)reloadLauncherView { [overView setNeedsDisplay];//This doesn't work } @end

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  • Jqgrid search option not working and edit popups not closed after submit

    - by Sajith
    i have facing two problem in Jqgrid. Search option not working and there is not closed editpopups after submit. my code below <table id="jQGridpending" style="width:auto"> </table> <div id="jQGridpendingPager"> </div> <table id="searchpending"></table> <div id="filterpending"></div> jQuery("#jQGridpending").jqGrid({ url: '@Url.Action("DiscountRequest", "Admin")', datatype: "json", mtype: "POST", colNames: [ "Id", "ClientName", "BpName", "Pdt", "DiscountReq", "DiscountAllowed", "Status", ], colModel: [ { name: "Id", width: 100, key: true, formatter: "integer", sorttype: "integer", hidden: true }, { name: "ClientName", width: 150, sortable: true,search:true,stype:'text', editrules: { required: false } }, { name: "BpName", width: 200, sortable: true, editable: false, editrules: { required: false } }, { name: "Pdt", width: 150, sortable: true, editable: false, editrules: { required: false } }, { name: "DiscountReq", width: 150, sortable: false, editable: false, editrules: { required: false } }, { name: "DiscountAllowed", width: 200, sortable: true, editable: true, editrules: { required: true } }, { name: 'Status', index: 'Status', width: 200, sortable: false, editable: true, formatter: 'select', edittype: 'select', editoptions: { value: "pending:pending;approved:approved;rejected:rejected" } }, @* { name: "Status", width: 200, sortable: false, editable: true, editrules: { required: true, minValue: 1, }, edittype: "select", editoptions: { async: false, dataUrl: "@Url.Action("GetStatus", "Admin")", buildSelect: function (response) { var s = "<select>"; s += '<option value="0">--Select--</option><option value="pending">pending</option>'; return s + "</select>"; } } },*@ //{ name: "Status", width: 150, sortable: true, editable: true, editrules: { required: true } }, //{ name: "Created", width: 120, formatter: "date", formatoptions: { srcformat: "ISO8601Long", newformat: "n/j/Y g:i:s A" }, align: "center", sorttype: "date" }, ], loadtext: "Processing pending request data please wait...", rowNum: 10, gridview: true, autoencode: true, loadonce: true, height: "auto", rownumbers: true, prmNames: { id: "Id" }, rowList: [10, 20, 30], pager: '#jQGridpendingPager', sortname: 'id', sortorder: "asc", viewrecords: true, jqModal: true, caption: "Pending List", reloadAfterSubmit: true, editurl: '@Url.Action("UpdateDiscount", "Admin")', }); jQuery("#jQGridpending").jqGrid('navGrid', '#jQGridpendingPager', { search: true,recreateFilter: true, add: false, searchtext: "Search", edittext: "Edit", deltext: "Delete", }, {//EDIT url: '@Url.Action("UpdateDiscount", "Admin")', width: "auto", jqModal: true, closeOnEscape: true, closeAfterEdit: true, reloadAfterSubmit: true, afterSubmit: function () { // Reload grid records after edit a entry in the db. $(this).jqGrid('setGridParam', { datatype: 'json' }); return [true, '', false]; }, }, {//DELETE url: '@Url.Action("DelDiscount", "Admin")', closeOnEscape: true }, {//SEARCH closeOnEscape: true, searchOnEnter: true, multipleSearch: true, //overlay: 0, width: "auto", height: "auto", });

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  • Why does the proxy generated code create the wrong class namespace when a MessageContract is in my W

    - by DaleyKD
    I have created two WCF Services (Shipping & PDFGenerator). They both, along with my ClientApp, share an assembly named Kyle.Common.Contracts. Within this assembly, I have three classes: namespace Kyle.Common.Contracts { [MessageContract] public class PDFResponse { [MessageHeader] public string fileName { get; set; } [MessageBodyMember] public System.IO.Stream fileStream { get; set; } } [MessageContract] public class PDFRequest { [MessageHeader] public Enums.PDFDocumentNameEnum docType { get; set; } [MessageHeader] public int? pk { get; set; } [MessageHeader] public string[] emailAddress { get; set; } [MessageBodyMember] public Kyle.Common.Contracts.TrackItResult[] trackItResults { get; set; } } [DataContract(Name = "TrackResult", Namespace = "http://kyle")] public class TrackResult { [DataMember] public int SeqNum { get; set; } [DataMember] public int ShipmentID { get; set; } [DataMember] public string StoreNum { get; set; } } } My PDFGenerator ServiceContract looks like: namespace Kyle.WCF.PDFDocs { [ServiceContract(Namespace="http://kyle")] public interface IPDFDocsService { [OperationContract] PDFResponse GeneratePDF(PDFRequest request); [OperationContract] void GeneratePDFAsync(Kyle.Common.Contracts.Enums.PDFDocumentNameEnum docType, int? pk, string[] emailAddress); [OperationContract] Kyle.Common.Contracts.TrackResult[] Test(); } } If I comment out the GeneratePDF stub, the proxy generated by VS2010 realizes that Test returns an array of Kyle.Common.Contracts.TrackResult. However, if I leave GeneratePDF there, the proxy refuses to use Kyle.Common.Contracts.TrackResult, and instead creates a new class, ClientApp.PDFDocServices.TrackResult, and uses that as the return type of Test. Is there a way to force the proxy generator to use Kyle.Common.Contracts.TrackResult whenever I use a MessageContract? Perhaps there's a better method for using a Stream and File Name as return types? I just don't want to have to create a Copy method to copy from ClientApp.PDFDocServices.TrackResult to Kyle.Common.Contracts.TrackResult, since they should be the exact same class. Thanks in advance, Kyle

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  • impersonation and BackgroundWorker

    - by Lucian D
    Hello guys, I have a little bit of a problem when trying to use the BackgroundWorker class with impersonation. Following the answers from google, I got this code to impersonate public class MyImpersonation{ WindowsImpersonationContext impersonationContext; [DllImport("advapi32.dll")] public static extern int LogonUserA(String lpszUserName, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int DuplicateToken(IntPtr hToken, int impersonationLevel, ref IntPtr hNewToken); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern bool RevertToSelf(); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] public static extern bool CloseHandle(IntPtr handle); public bool impersonateValidUser(String userName, String domain, String password) { WindowsIdentity tempWindowsIdentity; IntPtr token = IntPtr.Zero; IntPtr tokenDuplicate = IntPtr.Zero; if (RevertToSelf()) { if (LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref token) != 0) { if (DuplicateToken(token, 2, ref tokenDuplicate) != 0) { tempWindowsIdentity = new WindowsIdentity(tokenDuplicate); impersonationContext = tempWindowsIdentity.Impersonate(); if (impersonationContext != null) { CloseHandle(token); CloseHandle(tokenDuplicate); return true; } } } } if (token != IntPtr.Zero) CloseHandle(token); if (tokenDuplicate != IntPtr.Zero) CloseHandle(tokenDuplicate); return false; } } It worked really well until I've used it with the BackgroundWorker class. In this case, I've added a impersonation in the the code that runs asynchronously. I have no errors, but the issue I'm having is that the impersonation does not work when it is used in the async method. In code this looks something like this: instantiate a BGWorker, and add an event handler to the DoWork event: _bgWorker = new BackgroundWorker(); _bgWorker.DoWork += new DoWorkEventHandler(_bgWorker_DoWork); in the above handler, a impersonation is made before running some code. private void _bgWorker_DoWork(object sender, DoWorkEventArgs e) { MyImpersonation myImpersonation = new MyImpersonation(); myImpersonation.impersonateValidUser(user, domain, pass) //run some code... myImpersonation.undoImpersonation(); } the code is launched with BGWorker.RunWorkerAsync(); As I said before, no error is thrown, only that the code acts as if I did't run any impersonation, that is with it's default credentials. Moreover, the impersonation method returns true, so the impersonation took place at a certain level, but probably not on the current thread. This must happen because the async code runs on another thread, so there must be something that needs to be added to the MyImpersonation class. But what?? :) Thanks in advance, Lucian

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