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• Resons why I'm using php rather then asp.net [closed]

  - by spirytus

  I have basic idea of how asp .Net works, but finds all framework hard to use if you are a newbie. I found compiling, web applications vs websites and all that stuff you should know to program in asp .net a bit tedious and so personally I go with php to create small, to medium applications for my clients. There are couple of reasons for it: php is easy scripting language, top to bottom and you done. You still can create objects, classes and if you have idea of MVC its fairly easy to create basic structure yourself so you can keep you presentation layer "relatively" clean. Although I find myself still mixing basic logic in my view's, I am trying to stick to booleans, and for each loops. ASP .net keeps it cleaner as far as I know and I agree that this is great. Heaps of free stuff for php and lots of help everywhere Although choice of IDE's for php is very limited, I still don't have to be stuck with VisualStudio. Lets be honest.. you can program in whatever you like but does anyone uses anything else other than VS? For basic applications I create, Visual Studio doesn't come even close to notepad :) / phpEdit (or similar) combination. It lacks of many features I constantly use, although armies of developers are using it and it must be for good reason. Personally not a big fan of VS though. Being on the market for that long should make editing much easier. I know .Net comes with awesome set of controls, validators etc. which is truly awesome. For me the problem starts if I want my validator to behave slightly different way and lets say fade in/out error messages. I know its possible to extend it behavior, plug into lifecycle and output different JS to the client and so on. I just never see it happen in places I work, and honestly, I don't even think most of .net developers I worked with during last couple of years would know how to do that. In php I have to grab some plugin for jQuery and use it for validation, which is fairly easy task once you had done it before. Again I'm sure its easy for .net gurus, but for newbie like me its almost impossible. I found that many asp .net programmers are very limited in what they are able to do and basically whack together .net applications using same lame set of controls, not even bothering in looking into how it works and what if? Now I don't want to anger anyone :) I know there is huge number of excellent .Net developers who know their stuff and are able to extend controls and do all that magic in no time. I found it a bit annoying though that many of them stick to what is provided without even trying to make it better. Nothing against .net here, just a thought really :) I remember when asp.net came out the idea was that front-end people will not be able to screw anything up and do their fron-end stuff without worrying what happens behind. Now its never that easy and I always tend to get server side people to fix this and that during development. Things like ID's assigned to controls can very easily make your application break and if someone is pure HTML guy using VS its easy to break something. Thats my thoughs on php and .net and reasons why for my work I go with php. I know that once learned asp .net is awesome technology and summing all up php doesn't even come close to it. For someone like me however, individually developing small basic applications for clients, php seems to work much better. Please let me know your thoughts on the above :)

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• Delphi: Using Enumerators to filter TList<T: class> by class type?

  - by afrazier

  Okay, this might be confusing. What I'm trying to do is use an enumerator to only return certain items in a generic list based on class type. Given the following hierarchy: type TShapeClass = class of TShape; TShape = class(TObject) private FId: Integer; public function ToString: string; override; property Id: Integer read FId write FId; end; TCircle = class(TShape) private FDiameter: Integer; public property Diameter: Integer read FDiameter write FDiameter; end; TSquare = class(TShape) private FSideLength: Integer; public property SideLength: Integer read FSideLength write FSideLength; end; TShapeList = class(TObjectList<TShape>) end; How can I extend TShapeList such that I can do something similar to the following: procedure Foo; var ShapeList: TShapeList; Shape: TShape; Circle: TCircle; Square: TSquare; begin // Create ShapeList and fill with TCircles and TSquares for Circle in ShapeList<TCircle> do begin // do something with each TCircle in ShapeList end; for Square in ShapeList<TSquare> do begin // do something with each TSquare in ShapeList end; for Shape in ShapeList<TShape> do begin // do something with every object in TShapeList end; end; I've tried extending TShapeList using an adapted version of Primoz Gabrijelcic's bit on Parameterized Enumerators using a factory record as follows: type TShapeList = class(TObjectList<TShape>) public type TShapeFilterEnumerator<T: TShape> = record private FShapeList: TShapeList; FClass: TShapeClass; FIndex: Integer; function GetCurrent: T; public constructor Create(ShapeList: TShapeList); function MoveNext: Boolean; property Current: T read GetCurrent; end; TShapeFilterFactory<T: TShape> = record private FShapeList: TShapeList; public constructor Create(ShapeList: TShapeList); function GetEnumerator: TShapeFilterEnumerator<T>; end; function FilteredEnumerator<T: TShape>: TShapeFilterFactory<T>; end; Then I modified Foo to be: procedure Foo; var ShapeList: TShapeList; Shape: TShape; Circle: TCircle; Square: TSquare; begin // Create ShapeList and fill with TCircles and TSquares for Circle in ShapeList.FilteredEnumerator<TCircle> do begin // do something with each TCircle in ShapeList end; for Square in ShapeList.FilteredEnumerator<TSquare> do begin // do something with each TSquare in ShapeList end; for Shape in ShapeList.FilteredEnumerator<TShape> do begin // do something with every object in TShapeList end; end; However, Delphi 2010 is throwing an error when I try to compile Foo about Incompatible types: TCircle and TShape. If I comment out the TCircle loop, then I get a similar error about TSquare. If I comment the TSquare loop out as well, the code compiles and works. Well, it works in the sense that it enumerates every object since they all descend from TShape. The strange thing is that the line number that the compiler indicates is 2 lines beyond the end of my file. In my demo project, it indicated line 177, but there's only 175 lines. Is there any way to make this work? I'd like to be able to assign to Circle directly without going through any typecasts or checking in my for loop itself.

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• All downloads being interrupted

  - by Jake

  System: Windows 7 Professional 64bit. 8GB RAM, Intel i5-2400 CPU, +300GB free on the hard drive. AVG Internet Security 2012 (enabled & disabled, with firewall enabled and disabled - no effect for either). This computer is less than a year old. Network: This problem is occurring on a single computer on a network with multiple computers. The router is a Motorola Netopia 3347-02 (DSL Modem/Wireless Router combined). The computer is plugged in directly to the modem, other computers are using the wireless successfully. The router has been reset. The only thing odd about the connection between the router and computer is that it is configured to allow RDP through, so it is assigned a static IP by the router and port forwarding is enabled for port 3389. Also, though I doubt it matters, a second wireless router is active behind this router providing a second network that some computers in the area use without issues. Details: All downloads initiated on this specific computer eventually fail, this includes streaming from youtube, specialized downloads (itunes), downloads from websites, FTP downloads, etc. Failure occurs with all browsers, but in chrome this is the process it takes: 1) Download begins normally, 2) At some point between (observed) 7MBs and 229MBs the download stops progressing (at this point, if watching chrome's task manager, you can see the network activity for the downloading tab drop to 0kps), 3) for some time the download sits there still attempting to complete, but will eventually display "123,049,871/0 B, Interrupted" (where the number is whatever it actually got to). The file I am using to test this is a very large .zip file located on a server I control, but the problem seems to occur on any site. The amount downloaded is completely random, and seems to be more time-based than anything (if I start a download immediately after the last one fails, it tends to get further than the last one). Small files can get through for this reason, though they can fail as well. In a test where I simultaneously downloaded the same file via HTTP (chrome) and FTP (windows explorer), both downloads failed at the same instant, though explorer displayed "Connection timed out" several minutes before chrome finally showed the download as interrupted. Other things I have tried based on advice given to people with similar/identical problems: Setting my MTU to 1492 (as described here: http://blog.thecompwiz.com/2011/08/networking-issues.html) Disabling write caching to the hard drive storing the download on an external device successfully transmitted +1GB file from one computer on the same network to this computer disabling indexing in the folder the download was being stored in disabling all security software checked to make sure all drivers were up to date read about 50 accounts with nearly exact descriptions of what I'm experiencing, none of which had a solution given Running Processes: Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ System Idle Process 0 Services 0 24 K System 4 Services 0 104,836 K smss.exe 332 Services 0 1,276 K csrss.exe 764 Services 0 5,060 K wininit.exe 820 Services 0 4,748 K csrss.exe 844 Console 1 23,764 K services.exe 876 Services 0 11,856 K lsass.exe 892 Services 0 14,420 K lsm.exe 900 Services 0 7,820 K winlogon.exe 944 Console 1 7,716 K svchost.exe 428 Services 0 12,744 K svchost.exe 796 Services 0 12,240 K svchost.exe 1036 Services 0 22,372 K svchost.exe 1084 Services 0 174,132 K svchost.exe 1112 Services 0 56,144 K svchost.exe 1288 Services 0 18,640 K svchost.exe 1404 Services 0 29,616 K spoolsv.exe 1576 Services 0 25,924 K svchost.exe 1616 Services 0 12,788 K AppleMobileDeviceService. 1728 Services 0 9,796 K avgwdsvc.exe 1820 Services 0 8,268 K mDNSResponder.exe 1844 Services 0 5,832 K w3dbsmgr.exe 1108 Services 0 43,760 K QBCFMonitorService.exe 1336 Services 0 16,408 K svchost.exe 2404 Services 0 28,240 K taskhost.exe 3020 Console 1 12,372 K dwm.exe 2280 Console 1 5,968 K explorer.exe 2964 Console 1 152,476 K WUDFHost.exe 3316 Services 0 6,740 K svchost.exe 3408 Services 0 5,556 K RAVCpl64.exe 3684 Console 1 13,864 K igfxtray.exe 3700 Console 1 7,804 K hkcmd.exe 3772 Console 1 7,868 K igfxpers.exe 3788 Console 1 10,940 K sidebar.exe 3836 Console 1 84,400 K chrome.exe 3964 Console 1 19,640 K pptd40nt.exe 4068 Console 1 5,156 K acrotray.exe 3908 Console 1 14,676 K avgtray.exe 3872 Console 1 9,508 K jusched.exe 4076 Console 1 4,412 K iTunesHelper.exe 1532 Console 1 87,308 K SearchIndexer.exe 3492 Services 0 36,948 K iPodService.exe 4136 Services 0 7,944 K BrccMCtl.exe 4276 Console 1 18,132 K splwow64.exe 4380 Console 1 32,600 K qbupdate.exe 4836 Console 1 24,236 K svchost.exe 4288 Services 0 20,700 K wmpnetwk.exe 3112 Services 0 9,516 K FNPLicensingService.exe 5248 Services 0 5,852 K QBW32.EXE 5508 Console 1 127,068 K QBDBMgrN.exe 5600 Services 0 42,252 K EXCEL.EXE 2512 Console 1 99,100 K LMS.exe 3188 Services 0 5,616 K UNS.exe 1600 Services 0 7,308 K axlbridge.exe 5260 Console 1 5,132 K chrome.exe 5888 Console 1 200,336 K chrome.exe 3536 Console 1 26,076 K chrome.exe 1952 Console 1 20,168 K chrome.exe 4596 Console 1 24,696 K chrome.exe 4292 Console 1 48,096 K chrome.exe 2796 Console 1 23,520 K Acrobat.exe 1240 Console 1 87,252 K 123w.exe 4892 Console 1 22,728 K calc.exe 1700 Console 1 12,636 K chrome.exe 1328 Console 1 28,888 K chrome.exe 3696 Console 1 47,012 K rundll32.exe 6320 Console 1 7,104 K chrome.exe 4928 Console 1 44,248 K AVGIDSAgent.exe 260 Services 0 12,940 K avgfws.exe 6052 Services 0 26,912 K avgnsa.exe 5064 Services 0 2,496 K avgrsa.exe 3088 Services 0 2,200 K avgcsrva.exe 2596 Services 0 380 K avgcsrva.exe 6948 Services 0 408 K StikyNot.exe 452 Console 1 14,772 K chrome.exe 4580 Console 1 28,200 K chrome.exe 4016 Console 1 57,756 K svchost.exe 7140 Services 0 4,500 K chrome.exe 6264 Console 1 56,824 K chrome.exe 7008 Console 1 56,896 K chrome.exe 2224 Console 1 38,032 K taskhost.exe 612 Console 1 7,228 K chrome.exe 6000 Console 1 10,928 K chrome.exe 2568 Console 1 43,052 K chrome.exe 272 Console 1 75,988 K chrome.exe 7328 Console 1 53,240 K PaprPort.exe 7976 Console 1 137,152 K pplinks.exe 7500 Console 1 14,052 K ppscanmg.exe 5744 Console 1 18,996 K taskeng.exe 7388 Console 1 6,308 K SearchProtocolHost.exe 8024 Services 0 8,804 K SearchFilterHost.exe 7232 Services 0 7,848 K chrome.exe 8016 Console 1 37,440 K cmd.exe 7692 Console 1 3,096 K conhost.exe 7516 Console 1 5,872 K tasklist.exe 8160 Console 1 5,772 K WmiPrvSE.exe 7684 Services 0 6,400 K Any help with this would be greatly appreciated, I've been beating my head against a wall over this all day. This computer serves dual purpose as the main company document server and the Owner's work computer, it's fairly important it be fully functional and I cannot figure this out.

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• ASP.NET WebControl ITemplate child controls are null

  - by tster

  Here is what I want: I want a control to put on a page, which other developers can place form elements inside of to display the entities that my control is searching. I have the Searching logic all working. The control builds custom search fields and performs searches based on declarative C# classes implementing my SearchSpec interface. Here is what I've been trying: I've tried using ITemplate on a WebControl which implements INamingContainer I've tried implementing a CompositeControl The closest I can get to working is below. OK I have a custom WebControl [ AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal), AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal), DefaultProperty("SearchSpecName"), ParseChildren(true), ToolboxData("<{0}:SearchPage runat=\"server\"> </{0}:SearchPage>") ] public class SearchPage : WebControl, INamingContainer { [Browsable(false), PersistenceMode(PersistenceMode.InnerProperty), DefaultValue(typeof(ITemplate), ""), Description("Form template"), TemplateInstance(TemplateInstance.Single), TemplateContainer(typeof(FormContainer))] public ITemplate FormTemplate { get; set; } public class FormContainer : Control, INamingContainer{ } public Control MyTemplateContainer { get; private set; } [Bindable(true), Category("Behavior"), DefaultValue(""), Description("The class name of the SearchSpec to use."), Localizable(false)] public virtual string SearchSpecName { get; set; } [Bindable(true), Category("Behavior"), DefaultValue(true), Description("True if this is query mode."), Localizable(false)] public virtual bool QueryMode { get; set; } private SearchSpec _spec; private SearchSpec Spec { get { if (_spec == null) { Type type = Assembly.GetExecutingAssembly().GetTypes().Where(t => t.Name == SearchSpecName).First(); _spec = (SearchSpec)Assembly.GetExecutingAssembly().CreateInstance(type.Namespace + "." + type.Name); } return _spec; } } protected override void CreateChildControls() { if (FormTemplate != null) { MyTemplateContainer = new FormTemplateContainer(this); FormTemplate.InstantiateIn(MyTemplateContainer); Controls.Add(MyTemplateContainer); } else { Controls.Add(new LiteralControl("blah")); } } protected override void RenderContents(HtmlTextWriter writer) { // <snip> } protected override HtmlTextWriterTag TagKey { get { return HtmlTextWriterTag.Div; } } } public class FormTemplateContainer : Control, INamingContainer { private SearchPage parent; public FormTemplateContainer(SearchPage parent) { this.parent = parent; } } then the usage: <tster:SearchPage ID="sp1" runat="server" SearchSpecName="TestSearchSpec" QueryMode="False"> <FormTemplate> <br /> Test Name: <asp:TextBox ID="testNameBox" runat="server" Width="432px"></asp:TextBox> <br /> Owner: <asp:TextBox ID="ownerBox" runat="server" Width="427px"></asp:TextBox> <br /> Description: <asp:TextBox ID="descriptionBox" runat="server" Height="123px" Width="432px" TextMode="MultiLine" Wrap="true"></asp:TextBox> </FormTemplate> </tster:SearchPage> The problem is that in the CodeBehind, the page has members descriptionBox, ownerBox and testNameBox. However, they are all null. Furthermore, FindControl("ownerBox") returns null as does this.sp1.FindControl("ownerBox"). I have to do this.sp1.MyTemplateContainer.FindControl("ownerBox") to get the control. How can I make it so that the C# Code Behind will have the controls generated and not null in my Page_Load event so that developers can just do this: testNameBox.Text = "foo"; ownerBox.Text = "bar"; descriptionBox.Text = "baz";

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• C++ virtual functions.Problem with vtable

  - by adivasile

  I'm doing a little project in C++ and I've come into some problems regarding virtual functions. I have a base class with some virtual functions: #ifndef COLLISIONSHAPE_H_ #define COLLISIONSHAPE_H_ namespace domino { class CollisionShape : public DominoItem { public: // CONSTRUCTOR //------------------------------------------------- // SETTERS //------------------------------------------------- // GETTERS //------------------------------------------------- virtual void GetRadius() = 0; virtual void GetPosition() = 0; virtual void GetGrowth(CollisionShape* other) = 0; virtual void GetSceneNode(); // OTHER //------------------------------------------------- virtual bool overlaps(CollisionShape* shape) = 0; }; } #endif /* COLLISIONSHAPE_H_ */ and a SphereShape class which extends CollisionShape and implements the methods above /* SphereShape.h */ #ifndef SPHERESHAPE_H_ #define SPHERESHAPE_H_ #include "CollisionShape.h" namespace domino { class SphereShape : public CollisionShape { public: // CONSTRUCTOR //------------------------------------------------- SphereShape(); SphereShape(CollisionShape* shape1, CollisionShape* shape2); // DESTRUCTOR //------------------------------------------------- ~SphereShape(); // SETTERS //------------------------------------------------- void SetPosition(); void SetRadius(); // GETTERS //------------------------------------------------- cl_float GetRadius(); cl_float3 GetPosition(); SceneNode* GetSceneNode(); cl_float GetGrowth(CollisionShape* other); // OTHER //------------------------------------------------- bool overlaps(CollisionShape* shape); }; } #endif /* SPHERESHAPE_H_ */ and the .cpp file: /*SphereShape.cpp*/ #include "SphereShape.h" #define max(a,b) (a>b?a:b) namespace domino { // CONSTRUCTOR //------------------------------------------------- SphereShape::SphereShape(CollisionShape* shape1, CollisionShape* shape2) { } // DESTRUCTOR //------------------------------------------------- SphereShape::~SphereShape() { } // SETTERS //------------------------------------------------- void SphereShape::SetPosition() { } void SphereShape::SetRadius() { } // GETTERS //------------------------------------------------- void SphereShape::GetRadius() { } void SphereShape::GetPosition() { } void SphereShape::GetSceneNode() { } void SphereShape::GetGrowth(CollisionShape* other) { } // OTHER //------------------------------------------------- bool SphereShape::overlaps(CollisionShape* shape) { return true; } } These classes, along some other get compiled into a shared library. Building libdomino.so g++ -m32 -lpthread -ldl -L/usr/X11R6/lib -lglut -lGLU -lGL -shared -lSDKUtil -lglut -lGLEW -lOpenCL -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86 -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/TempSDKUtil/lib/x86 -L"/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86" -lSDKUtil -lglut -lGLEW -lOpenCL -o build/debug/x86/libdomino.so build/debug/x86//Material.o build/debug/x86//Body.o build/debug/x86//SphereShape.o build/debug/x86//World.o build/debug/x86//Engine.o build/debug/x86//BVHNode.o When I compile the code that uses this library I get the following error: ../../../lib/x86//libdomino.so: undefined reference to `vtable for domino::CollisionShape' ../../../lib/x86//libdomino.so: undefined reference to `typeinfo for domino::CollisionShape' Command used to compile the demo that uses the library: g++ -o build/debug/x86/startdemo build/debug/x86//CMesh.o build/debug/x86//CSceneNode.o build/debug/x86//OFF.o build/debug/x86//Light.o build/debug/x86//main.o build/debug/x86//Camera.o -m32 -lpthread -ldl -L/usr/X11R6/lib -lglut -lGLU -lGL -lSDKUtil -lglut -lGLEW -ldomino -lSDKUtil -lOpenCL -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86 -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/TempSDKUtil/lib/x86 -L../../../lib/x86/ -L"/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86" (the -ldomino flag) And when I run the demo, I manually tell it about the library: LD_LIBRARY_PATH=../../lib/x86/:$AMDAPPSDKROOT/lib/x86:$LD_LIBRARY_PATH bin/x86/startdemo After reading a bit about virtual functions and virtual tables I understood that virtual tables are handled by the compiler and I shouldn't worry about it, so I'm a little bit confused on how to handle this issue. I'm using gcc version 4.6.0 20110530 (Red Hat 4.6.0-9) (GCC) Later edit: I'm really sorry, but I wrote the code by hand directly here. I have defined the return types in the code. I apologize to the 2 people that answered below. I have to mention that I am a beginner at using more complex project layouts in C++.By this I mean more complex makefiles, shared libraries, stuff like that.

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• Constant Memory Leak in SpeechSynthesizer

  - by DudeFX

  I have developed a project which I would like to release which uses c#, WPF and the System.Speech.Synthesizer object. The issue preventing the release of this project is that whenever SpeakAsync is called it leaves a memory leak that grows to the point of eventual failure. I believe I have cleaned up properly after using this object, but cannot find a cure. I have run the program through Ants Memory Profiler and it reports that WAVEHDR and WaveHeader is growing with each call. I have created a sample project to try to pinpoint the cause, but am still at a loss. Any help would be appreciated. The project uses VS2008 and is a c# WPF project that targets .NET 3.5 and Any CPU. You need to manually add a reference to System.Speech. Here is the Code: <Window x:Class="SpeechTest.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Grid> <StackPanel Orientation="Vertical"> <Button Content="Start Speaking" Click="Start_Click" Margin="10" /> <Button Content="Stop Speaking" Click="Stop_Click" Margin="10" /> <Button Content="Exit" Click="Exit_Click" Margin="10"/> </StackPanel> </Grid> // Start of code behind using System; using System.Windows; using System.Speech.Synthesis; namespace SpeechTest { public partial class Window1 : Window { // speak setting private bool speakingOn = false; private int curLine = 0; private string [] speakLines = { "I am wondering", "Why whenever Speech is called", "A memory leak occurs", "If you run this long enough", "It will eventually crash", "Any help would be appreciated" }; public Window1() { InitializeComponent(); } private void Start_Click(object sender, RoutedEventArgs e) { speakingOn = true; SpeakLine(); } private void Stop_Click(object sender, RoutedEventArgs e) { speakingOn = false; } private void Exit_Click(object sender, RoutedEventArgs e) { App.Current.Shutdown(); } private void SpeakLine() { if (speakingOn) { // Create our speak object SpeechSynthesizer spk = new SpeechSynthesizer(); spk.SpeakCompleted += new EventHandler(spk_Completed); // Speak the line spk.SpeakAsync(speakLines[curLine]); } } public void spk_Completed(object sender, SpeakCompletedEventArgs e) { if (sender is SpeechSynthesizer) { // get access to our Speech object SpeechSynthesizer spk = (SpeechSynthesizer)sender; // Clean up after speaking (thinking the event handler is causing the memory leak) spk.SpeakCompleted -= new EventHandler(spk_Completed); // Dispose the speech object spk.Dispose(); // bump it curLine++; // check validity if (curLine = speakLines.Length) { // back to the beginning curLine = 0; } // Speak line SpeakLine(); } } } } I run this program on Windows 7 64 bit and it will run and eventually halt when attempting to create a new SpeechSynthesizer object. When run on Windows Vista 64 bit the memory will grow from a starting point of 34k to so far about 400k and growing. Can anyone see anything in the code that might be causing this, or is this an issue with the Speech object itself. Any help would be appreciated.

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• Parallax backgrounds in OpenGL ES on the iPhone

  - by Scott

  I've got basically a 2d game on the iPhone and I'm trying to set up multiple backgrounds that scroll at different speeds (known as parallax backgrounds). So my thought was to just stick the backgrounds BEHIND the foreground using different z-coordinate planes, and just make them bigger than the foreground (in size) to accommodate, so that the whole thing can be scrolled (just at a different speed). And (as far as I know) I basically implemented that. The only problem is that it seems to entirely ignore whatever z-value I give it, or rather it just zeroes all of them. I see the background (I've only tested ONE background so far, to keep it simple...so for now I just have a foreground and I want one background scrolling at a different speed), but it scrolls 1:1 with my foreground, so it obviously doesn't look right, and most of it is cut off (cause it's bigger). And I've tried various z-values for the background and various near/far clipping planes...it's always the same. I'm probably just doing one simple thing wrong, but I can't figure it out. I'm wondering if it has to do with me using only 2 coordinates in glVertexPointer for the foreground? (Of course for the background I AM passing in 3) I'll post some code: This is some initial setup: glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrthof(-1.0f, 1.0f, -1.5f, 1.5f, -10.0f, 10.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glEnableClientState(GL_VERTEX_ARRAY); //glEnableClientState(GL_COLOR_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); //transparency glEnable (GL_BLEND); glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA); A little bit about my foreground's float array....it's interleaved. For my foreground it goes vertex x, vertex y, texture x, texture y, repeat. This all works just fine. This is my FOREGROUND rendering: glVertexPointer(2, GL_FLOAT, 4*sizeof(GLfloat), texes); <br> glTexCoordPointer(2, GL_FLOAT, 4*sizeof(GLfloat), (GLvoid*)texes + 2*sizeof(GLfloat)); <br> glDrawArrays(GL_TRIANGLES, 0, indexCount / 4); BACKGROUND rendering: Same drill here except this time it goes vertex x, vertex y, vertex z, texture x, texture y, repeat. Note the z value this time. I did make sure the data in this array was correct while debugging (getting the right z values). And again, it shows up...it's just not going far back in the distance like it should. glVertexPointer(3, GL_FLOAT, 5*sizeof(GLfloat), b1Texes); glTexCoordPointer(2, GL_FLOAT, 5*sizeof(GLfloat), (GLvoid*)b1Texes + 3*sizeof(GLfloat)); glDrawArrays(GL_TRIANGLES, 0, b1IndexCount / 5); And to move my camera, I just do a simple glTranslatef(x, y, 0.0f); I'm not understanding what I'm doing wrong cause this seems like the most basic 3D function imaginable...things further away are smaller and don't move as fast when the camera moves. Not the case for me. Seems like it should be pretty basic and not even really be affected by my projection and all that (though I've even tried doing glFrustum just for fun, no success). Please help, I feel like it's just one dumb thing. I will post more code if necessary.

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• Object of type 'customObject' cannot be converted to type 'customObject'.

  - by Phani Kumar PV

  i am receiving the follwing error when i am invoking a custom object "Object of type 'customObject' cannot be converted to type 'customObject'." Following is the scenario when i am getting the error i am invoking a method in a dll dynamically. Load an assembly CreateInstance.... calling MethodInfo.Invoke() passing int, string as a parameter for my method is working fine = No exceptions are thrown. But if I try and pass a one of my own custom class objects as a parameter, then I get an ArgumentException exception, and it is not either an ArgumentOutOfRangeException or ArgumentNullException. "Object of type 'customObject' cannot be converted to type 'customObject'." I am doing this in a web application. The class file containing the method is in a different proj . also the custom object is a sepearte class in the same file. there is no such thing called a static aseembly in my code. I am trying to invoke a webmethod dynamically. this webmethod is having the customObject type as an input parameter. So when i invoke the webmethod i am dynamically creating the proxy assembly and all. From the same assembly i am trying to create an instance of the cusotm object assinging the values to its properties and then passing this object as a parameter and invoking the method. everything is dynamic and nothing is created static.. :( add reference is not used. Following is a sample code i tried to create it public static object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args) { System.Net.WebClient client = new System.Net.WebClient(); //-Connect To the web service using (System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl")) { //--Now read the WSDL file describing a service. ServiceDescription description = ServiceDescription.Read(stream); ///// LOAD THE DOM ///////// //--Initialize a service description importer. ServiceDescriptionImporter importer = new ServiceDescriptionImporter(); importer.ProtocolName = "Soap12"; // Use SOAP 1.2. importer.AddServiceDescription(description, null, null); //--Generate a proxy client. importer.Style = ServiceDescriptionImportStyle.Client; //--Generate properties to represent primitive values. importer.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties; //--Initialize a Code-DOM tree into which we will import the service. CodeNamespace nmspace = new CodeNamespace(); CodeCompileUnit unit1 = new CodeCompileUnit(); unit1.Namespaces.Add(nmspace); //--Import the service into the Code-DOM tree. This creates proxy code //--that uses the service. ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit1); if (warning == 0) //--If zero then we are good to go { //--Generate the proxy code CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp"); //--Compile the assembly proxy with the appropriate references string[] assemblyReferences = new string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" }; CompilerParameters parms = new CompilerParameters(assemblyReferences); CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1); //-Check For Errors if (results.Errors.Count > 0) { StringBuilder sb = new StringBuilder(); foreach (CompilerError oops in results.Errors) { sb.AppendLine("========Compiler error============"); sb.AppendLine(oops.ErrorText); } throw new System.ApplicationException("Compile Error Occured calling webservice. " + sb.ToString()); } //--Finally, Invoke the web service method Type foundType = null; Type[] types = results.CompiledAssembly.GetTypes(); foreach (Type type in types) { if (type.BaseType == typeof(System.Web.Services.Protocols.SoapHttpClientProtocol)) { Console.WriteLine(type.ToString()); foundType = type; } } object wsvcClass = results.CompiledAssembly.CreateInstance(foundType.ToString()); MethodInfo mi = wsvcClass.GetType().GetMethod(methodName); return mi.Invoke(wsvcClass, args); } else { return null; } } } I cant find anything static being done by me. any help is greatly appreciated. Regards, Phani Kumar PV

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• ASP.NET Membership API not working on Win2008 server/IIS7

  - by Program.X

  I have a very odd problem. I have a web app that uses the .NET Membership API to provide login functionality. This works fine on my local dev machine, using WebDev 4.0 server. I'm using .NET 4.0 with some URL Rewriting, but not on the pages where login is required. I have a Windows Server 2008 with IIS7 However, the Membership API seemingly does not work on the server. I have set up remote debugging and the LoginUser.LoggedIn event of the LoginUser control gets fired okay, but the MembershipUser is null. I get no answer about the username/password being invalid so it seems to be recognising it. If I enter an invalid username/password, I get an invalid username/password response. Some code, if it helps: <asp:ValidationSummary ID="LoginUserValidationSummary" runat="server" CssClass="validation-error-list" ValidationGroup="LoginUserValidationGroup"/> <div class="accountInfo"> <fieldset class="login"> <legend>Account Information</legend> <p> <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">Username:</asp:Label> <asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox> <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" CssClass="validation-error" Display="Dynamic" ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator> </p> <p> <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label> <asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox> <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" CssClass="validation-error" Display="Dynamic" ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator> </p> <p> <asp:CheckBox ID="RememberMe" runat="server"/> <asp:Label ID="RememberMeLabel" runat="server" AssociatedControlID="RememberMe" CssClass="inline">Keep me logged in</asp:Label> </p> </fieldset> <p class="login-action"> <asp:Button ID="LoginButton" runat="server" CommandName="Login" CssClass="submitButton" Text="Log In" ValidationGroup="LoginUserValidationGroup"/> </p> and the code behind: protected void Page_Load(object sender, EventArgs e) { LoginUser.LoginError += new EventHandler(LoginUser_LoginError); LoginUser.LoggedIn += new EventHandler(LoginUser_LoggedIn); } void LoginUser_LoggedIn(object sender, EventArgs e) { // this code gets run so it appears logins work Roles.DeleteCookie(); // this behaviour has been removed for testing - no difference } void LoginUser_LoginError(object sender, EventArgs e) { HtmlGenericControl htmlGenericControl = LoginUser.FindControl("errorMessageSpan") as HtmlGenericControl; if (htmlGenericControl != null) htmlGenericControl.Visible = true; } I have "Fiddled" with the Login form reponse and I get the following Cookie-Set headers: Set-Cookie: ASP.NET_SessionId=lpyyiyjw45jjtuav1gdu4jmg; path=/; HttpOnly Set-Cookie: .ASPXAUTH=A7AE08E071DD20872D6BBBAD9167A709DEE55B352283A7F91E1066FFB1529E5C61FCEDC86E558CEA1A837E79640BE88D1F65F14FA8434AA86407DA3AEED575E0649A1AC319752FBCD39B2A4669B0F869; path=/; HttpOnly Set-Cookie: .ASPXROLES=; expires=Mon, 11-Oct-1999 23:00:00 GMT; path=/; HttpOnly I don't know what is useful here because it is obviously encrypted but I find the .APXROLES cookie having no value interesting. It seems to fail to register the cookie, but passes authentication

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• .NET Oracle Provider: Why will my stored proc not work?

  - by Matt

  I am using the Oracle .NET Provider and am calling a stored procedure in a package. The message I get back is "Wrong number or types in call". I have ensured that the order in which the parameters are being added are in the correct order and I have gone over the OracleDbType's thoroughly though I suspect that is where my problem is. Here is the code-behind: //setup intial stuff, connection and command string msg = string.Empty; string oraConnString = ConfigurationManager.ConnectionStrings["OracleServer"].ConnectionString; OracleConnection oraConn = new OracleConnection(oraConnString); OracleCommand oraCmd = new OracleCommand("PK_MOVEMENT.INSERT_REC", oraConn); oraCmd.CommandType = CommandType.StoredProcedure; try { //iterate the array //grab 3 items at a time and do db insert, continue until all items are gone. Will always be divisible by 3. for (int i = 0; i < theData.Length; i += 3) { //3 items hardcoded for now string millCenter = "0010260510"; string movementType = "RECEIPT"; string feedCode = null; string userID = "GRIMMETTM"; string inventoryType = "INGREDIENT"; //set to FINISHED for feed stuff string movementDate = theData[i + 0]; string ingCode = System.Text.RegularExpressions.Regex.Match(theData[i + 1], @"^([0-9]*)").ToString(); string pounds = theData[i + 2].Replace(",", ""); //setup parameters OracleParameter p1 = new OracleParameter("A_MILL_CENTER", OracleDbType.NVarchar2, 10); p1.Direction = ParameterDirection.Input; p1.Value = millCenter; oraCmd.Parameters.Add(p1); OracleParameter p2 = new OracleParameter("A_INGREDIENT_CODE", OracleDbType.NVarchar2, 50); p2.Direction = ParameterDirection.Input; p2.Value = ingCode; oraCmd.Parameters.Add(p2); OracleParameter p3 = new OracleParameter("A_FEED_CODE", OracleDbType.NVarchar2, 30); p3.Direction = ParameterDirection.Input; p3.Value = feedCode; oraCmd.Parameters.Add(p3); OracleParameter p4 = new OracleParameter("A_MOVEMENT_TYPE", OracleDbType.NVarchar2, 10); p4.Direction = ParameterDirection.Input; p4.Value = movementType; oraCmd.Parameters.Add(p4); OracleParameter p5 = new OracleParameter("A_MOVEMENT_DATE", OracleDbType.NVarchar2, 10); p5.Direction = ParameterDirection.Input; p5.Value = movementDate; oraCmd.Parameters.Add(p5); OracleParameter p6 = new OracleParameter("A_MOVEMENT_QTY", OracleDbType.Int64, 12); p6.Direction = ParameterDirection.Input; p6.Value = pounds; oraCmd.Parameters.Add(p6); OracleParameter p7 = new OracleParameter("INVENTORY_TYPE", OracleDbType.NVarchar2, 10); p7.Direction = ParameterDirection.Input; p7.Value = inventoryType; oraCmd.Parameters.Add(p7); OracleParameter p8 = new OracleParameter("A_CREATE_USERID", OracleDbType.NVarchar2, 20); p8.Direction = ParameterDirection.Input; p8.Value = userID; oraCmd.Parameters.Add(p8); OracleParameter p9 = new OracleParameter("A_RETURN_VALUE", OracleDbType.Int32, 10); p9.Direction = ParameterDirection.Output; oraCmd.Parameters.Add(p9); //open and execute oraConn.Open(); oraCmd.ExecuteNonQuery(); oraConn.Close(); } } catch (OracleException oraEx) { msg = "An error has occured in the database: " + oraEx.ToString(); } catch (Exception ex) { msg = "An error has occured: " + ex.ToString(); } finally { //close connection oraConn.Close(); } return msg;

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• Modern Java alternatives

  - by Ralph

  I'm not sure if stackoverflow is the best forum for this discussion. I have been a Java developer for 14 years and have written an enterprise-level (~500,000 line) Swing application that uses most of the standard library APIs. Recently, I have become disappointed with the progress that the language has made to "modernize" itself, and am looking for an alternative for ongoing development. I have considered moving to the .NET platform, but I have issues with using something the only runs well in Windows (I know about Mono, but that is still far behind Microsoft). I also plan on buying a new Macbook Pro as soon as Apple releases their new rumored Arrandale-based machines and want to develop in an environment that will feel "at home" in Unix/Linux. I have considered using Python or Ruby, but the standard Java library is arguably the largest of any modern language. In JVM-based languages, I looked at Groovy, but am disappointed with its performance. Rumor has it that with the soon-to-be released JDK7, with its InvokeDynamic instruction, this will improve, but I don't know how much. Groovy is also not truly a functional language, although it provides closures and some of the "functional" features on collections. It does not embrace immutability. I have narrowed my search down to two JVM-based alternatives: Scala and Clojure. Each has its strengths and weaknesses. I am looking for the stackoverflow readerships' opinions. I am not an expert at either of these languages; I have read 2 1/2 books on Scala and am currently reading Stu Halloway's book on Clojure. Scala is strongly statically typed. I know the dynamic language folks claim that static typing is a crutch for not doing unit testing, but it does provide a mechanism for compile-time location of a whole class of errors. Scala is more concise than Java, but not as much as Clojure. Scala's inter-operation with Java seems to be better than Clojure's, in that most Java operations are easier to do in Scala than in Clojure. For example, I can find no way in Clojure to create a non-static initialization block in a class derived from a Java superclass. For example, I like the Apache commons CLI library for command line argument parsing. In Java and Scala, I can create a new Options object and add Option items to it in an initialization block as follows (Java code): final Options options = new Options() { { addOption(new Option("?", "help", false, "Show this usage information"); // other options } }; I can't figure out how to the same thing in Clojure (except by using (doit...)), although that may reflect my lack of knowledge of the language. Clojure's collections are optimized for immutability. They rarely require copy-on-write semantics. I don't know if Scala's immutable collections are implemented using similar algorithms, but Rich Hickey (Clojure's inventor) goes out of his way to explain how that language's data structures are efficient. Clojure was designed from the beginning for concurrency (as was Scala) and with modern multi-core processors, concurrency takes on more importance, but I occasionally need to write simple non-concurrent utilities, and Scala code probably runs a little faster for these applications since it discourages, but does not prohibit, "simple" mutability. One could argue that one-off utilities do not have to be super-fast, but sometimes they do tasks that take hours or days to complete. I know that there is no right answer to this "question", but I thought I would open it up for discussion. If anyone has a suggestion for another JVM-based language that can be used for enterprise level development, please list it. Also, it is not my intent to start a flame war. Thanks, Ralph

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• Encoding in Scene Builder

  - by Agafonova Victoria

  I generate an FXML file with Scene Builder. I need it to contain some cirillic text. When i edit this file with Scene Builder i can see normal cirillic letters (screen 1) After compileing and running my program with this FXML file, i'll see not cirillic letters, but some artefacts (screen 2) But, as you can see on the screen 3, its xml file encoding is UTF-8. Also, you can see there that it is saved in ANSI. I've tried to open it with other editors (default eclipse and sublime text 2) and they shoen wrong encoding either. (screen 4 and screen 5) At first i've tried to convert it from ansi to utf-8 (with notepad++). After that eclipse and sublime text 2 started display cirillic letters as they must be. But. Scene builder gave an error, when i've tried to open this file with it: Error loading file C:\eclipse\workspace\equification\src\main\java\ru\igs\ava\equification\test.fxml. C:\eclipse\workspace\equification\src\main\java\ru\igs\ava\equification\test.fxml:1: ParseError at [row,col]:[1,1] Message: Content is not allowed in prolog. And java compiler gave me an error: ??? 08, 2012 8:11:03 PM javafx.fxml.FXMLLoader logException SEVERE: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,1] Message: Content is not allowed in prolog. /C:/eclipse/workspace/equification/target/classes/ru/igs/ava/equification/test.fxml:1 at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at ru.igs.ava.equification.EquificationFX.start(EquificationFX.java:22) at com.sun.javafx.application.LauncherImpl$5.run(Unknown Source) at com.sun.javafx.application.PlatformImpl$4.run(Unknown Source) at com.sun.javafx.application.PlatformImpl$3.run(Unknown Source) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source) at com.sun.glass.ui.win.WinApplication$2$1.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Exception in Application start method Exception in thread "main" java.lang.RuntimeException: Exception in Application start method at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source) at com.sun.javafx.application.LauncherImpl.access$000(Unknown Source) at com.sun.javafx.application.LauncherImpl$1.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: javafx.fxml.LoadException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,1] Message: Content is not allowed in prolog. at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at javafx.fxml.FXMLLoader.load(Unknown Source) at ru.igs.ava.equification.EquificationFX.start(EquificationFX.java:22) at com.sun.javafx.application.LauncherImpl$5.run(Unknown Source) at com.sun.javafx.application.PlatformImpl$4.run(Unknown Source) at com.sun.javafx.application.PlatformImpl$3.run(Unknown Source) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source) at com.sun.glass.ui.win.WinApplication$2$1.run(Unknown Source) ... 1 more Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,1] Message: Content is not allowed in prolog. at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(Unknown Source) at javax.xml.stream.util.StreamReaderDelegate.next(Unknown Source) ... 14 more So, i've converted it back to ANSI. And, having this file in ANSI, changed its "artefacted" text to cirillic letters manually. Now i can see normal text when i run my program, but when i open this fixed file via Scene Builder, Scene Builder shows me some "artefacted" text (screen 7). So, how can i fix this situation?

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• java.rmi.UnmarshalException: unable to pull client classes by server

  - by andrews

  Hi, I have an RMI client/server set-up on two machines that works fine in a simple situation when the server doesn't require a client-side defned class. However, when I need to use a class defined on the client side I am unable to have the server unmarshall those classes. I suspect this is an issue with my java.rmi.server.codebase property that I pass in as argument to the client app. I followed Sun's RMI Tutorial trail and I think I have followed the steps exactly except that I don't specify a classpath argument when executing client and server because they execute in the directory right above the root package directory (however I tried that too with no effect). The exceptions I get when attempting to execute the different client-side combinations described in detail below are all the same: RmiServer exception: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: java.lang.ClassNotFoundException: test.MyTask at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:353) at sun.rmi.transport.Transport$1.run(Transport.java:177) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:173) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255) at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178) at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132) at $Proxy0.execute(Unknown Source) at test.myClient.main(myClient.java:32) The details are: My client/server rmi is set up over a home network behind a router. The router is assigned to a static ip address I will call myhostname. Appropriate port-mapping is set-up in the router that points to the right machines. role, machine, os, ip-address: server, venice, linux ubuntu 9.10, 10.0.1.2 client, naples, mac os x leopard, 10.0.1.4 I startup the server side as follows inside /home/andrews/workspace/epsilon/bin: 1 starting registry on the default port 1099: venice% rmiregistry & 2 starting web-server on port 2001 pointing to code base for common interfaces: venice% java webserver/ClassFileServer 2001 /home/andrew/workspace/epsilon/bin 3 starting server app (main class in test/myServer) which registers the server object: venice% java -Djava.rmi.server.codebase="http://myhostname:2001/" -Djava.security.policy=server.policy -Djava.rmi.server.hostname=myhostname test/myServer & Now the client side inside /Users/andrews/Development/Java/workspace/epsilon/bin: 1 start a local web server that can server client-side classes to the server (not sure if this is needed, but I added I tried it, and still no success; I have added port-mapping to the router for 2001 to venice, for 2002 to naples) naples$ java webserver/ClassFileServer 2002 /Users/andrews/Development/Java/workspace/epsilon/bin/ Trying to run the client (note: I don't specify the -cp argument because client executes right above the root package directory): 1 try #1 using an http hostname naples$ java -Djava.rmi.server.codebase=http://10.0.1.4:2002/ -Djava.security.policy=client.policy test.myClient myhostname Note 1: the myhostname argument at the end is passed-in to the client so that it resolves to server's rmi hostname. Note 2: I tried using localhost:2002 instead of 10.0.1.4:2002 too. Note 3: I tried using myhostname:2002 since myhostname is assigned to the router and I have proper port-mapping set-up, this address should resolve to naples and not venice 2 try #2: naples$ java -Djava.rmi.server.codebase=file:/Users/andrews/Development/Java/workspace/epsilon/bin/ -Djava.security.policy=client.policy test.myClient myhostname Note 1: the code base url format is correct, I created a small program to convert current file directory path into a url and used that. using file:///Users... has same effect. Other notes: 1 my server and client policy files correctly specify the path, as I've tested this setup with good and bad paths, and getting a security exception for bad path 2 this setup works if I don't use client-side defined objects, the client connects correctly to the server and the server executes. 3 when I place the client-side class on the server in the server's classpath, all executes fine. All help is appreciated.

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• Is this question too hard for a seasoned C++ architect?

  - by Monomer

  Background Information We're looking to hire a seasoned C++ architect (10+years dev, of which at least 6years must be C++ ) for a high frequency trading platform. Job advert says STL, Boost proficiency is a must with preferences to modern uses of C++. The company I work for is a Fortune 500 IB (aka finance industry), it requires passes in all the standard SHL tests (numeric, vocab, spatial etc) before interviews can commence. Everyone on the team was given the task of coming up with one question to ask the candidates during a written/typed test, please note this is the second test provided to the candidates, the first being Advanced IKM C++ test, done in the offices supervised and without internet access. People passing that do the second test. After roughly 70 candidates, my question has been determined to be statistically the worst performing - aka least number of people attempted it, furthermore even less people were able to give meaningful answers. Please note, the second test is not timed, the candidate can literally take as long as they like (we've had one person take roughly 10.5hrs) My question to SO is this, after SHL and IKM adv c++ tests, backed up with at least 6+ years C++ development experience, is it still ok not to be able to even comment about let alone come up with some loose strategy for solving the following question. The Question There is a class C with methods foo, boo, boo_and_foo and foo_and_boo. Each method takes i,j,k and l clock cycles respectively, where i < j, k < i+j and l < i+j. class C { public: int foo() {...} int boo() {...} int boo_and_foo() {...} int foo_and_boo() {...} }; In code one might write: C c; . . int i = c.foo() + c.boo(); But it would be better to have: int i = c.foo_and_boo(); What changes or techniques could one make to the definition of C, that would allow similar syntax of the original usage, but instead have the compiler generate the latter. Note that foo and boo are not commutative. Possible Solution We were basically looking for an expression templates based approach, and were willing to give marks to anyone who had even hinted or used the phrase or related terminology. We got only two people that used the wording, but weren't able to properly describe how they accomplish the task in detail. We use such techniques all over the place, due to the use of various mathematical operators for matrix and vector based calculations, for example to decide when to use IPP or hand woven implementations at compile time for a particular architecture and many other things. The particular area of software development requires microsecond response times. I believe could/should be able to teach a junior such techniques, but given the assumed caliber of candidates I expected a little more. Is this really a difficult question? Should it be removed? Or are we just not seeing the right candidates?

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• Sporadic EXC_BAD_INSTRUCTION (SIGILL) when in 64 bit mode

  - by Ger Teunis

  For some reason for a low-number of users (say 1 in a few hundred) the application seem to crash when run in 64bit mode on a Snow Leopard 10.6.3 I've attached the code, but please remind IT IS NOT A CODE issue. The crashed seem to be random in com.apple.AppKit at random locations and random moments. Anyone else had any experiences? Using GCC compiler of Xcode 3.2.2 Crash #1 of user Code Type: X86-64 (Native) Parent Process: launchd [90] Date/Time: 2010-05-02 04:12:59.708 -0500 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6 Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc[232]: alt handlers in objc runtime are buggy! Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff874dd8b7 _objc_fatal + 238 1 libobjc.A.dylib 0x00007fff874de57c objc_addExceptionHandler + 1026 2 com.apple.CoreFoundation 0x00007fff83914212 _CFDoExceptionOperation + 402 3 com.apple.AppKit 0x00007fff87afc55d _NSAppKitLock + 79 4 com.apple.AppKit 0x00007fff87bd1f93 +[NSColorList _findColorListNamed:forDeviceType:] + 86 5 com.apple.AppKit 0x00007fff87b9d304 -[NSCatalogColor colorUsingColorSpaceName:device:] + 255 6 com.apple.AppKit 0x00007fff87c985ad -[NSLayoutManager(NSPrivate) _drawGlyphsForGlyphRange:atPoint:parameters:] + 4764 7 com.apple.AppKit 0x00007fff87c5d79c -[NSTextView drawRect:] + 1839 8 com.apple.AppKit 0x00007fff87c5ce2e -[NSTextView _drawRect:clip:] + 2343 9 com.apple.AppKit 0x00007fff87be4485 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1325 10 com.apple.AppKit 0x00007fff87be47ef -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2199 11 com.apple.AppKit 0x00007fff87be2b57 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 767 12 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 13 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 14 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 15 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 16 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 17 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 18 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 19 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 20 com.apple.AppKit 0x00007fff87be2678 -[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 254 21 com.apple.AppKit 0x00007fff87bdef27 -[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] + 2683 22 com.apple.AppKit 0x00007fff87b58777 -[NSView displayIfNeeded] + 969 23 com.apple.AppKit 0x00007fff87b53622 _handleWindowNeedsDisplay + 678 24 com.apple.Foundation 0x00007fff8600fa4d __NSFireTimer + 114 25 com.apple.CoreFoundation 0x00007fff83908708 __CFRunLoopRun + 6488 26 com.apple.CoreFoundation 0x00007fff839068df CFRunLoopRunSpecific + 575 27 com.apple.HIToolbox 0x00007fff821b5ada RunCurrentEventLoopInMode + 333 28 com.apple.HIToolbox 0x00007fff821b58df ReceiveNextEventCommon + 310 29 com.apple.HIToolbox 0x00007fff821b5798 BlockUntilNextEventMatchingListInMode + 59 30 com.apple.AppKit 0x00007fff87b28a2a _DPSNextEvent + 708 31 com.apple.AppKit 0x00007fff87b28379 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 32 com.apple.AppKit 0x00007fff87d37060 -[NSTextView mouseDown:] + 8426 33 com.apple.AppKit 0x00007fff87c21f1b -[NSWindow sendEvent:] + 5409 34 com.apple.AppKit 0x00007fff87b57662 -[NSApplication sendEvent:] + 4719 35 com.apple.AppKit 0x00007fff87aee0aa -[NSApplication run] + 474 36 com.apple.AppKit 0x00007fff87ae6d7c NSApplicationMain + 364 37 com.NZBVortex.NZBVortex 0x0000000100000fe0 start + 52 Crash #2 from same user moments later Code Type: X86-64 (Native) Parent Process: launchd [76] Date/Time: 2010-05-02 11:59:33.226 +0200 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6 Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc[4360]: alt handlers in objc runtime are buggy! Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff8015d8b7 _objc_fatal + 238 1 libobjc.A.dylib 0x00007fff8015e57c objc_addExceptionHandler + 1026 2 com.apple.CoreFoundation 0x00007fff85367212 _CFDoExceptionOperation + 402 3 com.apple.AppKit 0x00007fff840b5f2f -[NSViewHierarchyLock lockForReadingWithExceptionHandler:] + 478 4 com.apple.AppKit 0x00007fff8420753e -[NSConcreteTextStorage _lockForReading] + 243 5 com.apple.AppKit 0x00007fff841e1449 -[NSLayoutManager(NSPrivate) _fillGlyphHoleForCharacterRange:startGlyphIndex:desiredNumberOfCharacters:] + 320 6 com.apple.AppKit 0x00007fff840e204a _NSFastFillAllGlyphHolesForGlyphRange + 719 7 com.apple.AppKit 0x00007fff841e10e2 _NSFastFillAllLayoutHolesUpToEndOfContainerForGlyphIndex + 653 8 com.apple.AppKit 0x00007fff841e0c72 -[NSLayoutManager textContainerForGlyphAtIndex:effectiveRange:] + 243 9 com.apple.AppKit 0x00007fff840f6786 -[NSLayoutManager glyphRangeForTextContainer:] + 286 10 com.apple.AppKit 0x00007fff846664a9 -[NSToolTipStringDrawingLayoutManager _sizeWithSize:attributedString:] + 883 11 com.apple.AppKit 0x00007fff84665dad +[NSToolTipStringDrawingLayoutManager sizeForDisplayingAttributedString:] + 354 12 com.apple.AppKit 0x00007fff84667292 -[NSToolTipManager displayToolTip:] + 616 13 com.apple.AppKit 0x00007fff846657d4 toolTipTimerFired + 114 14 com.apple.CoreFoundation 0x00007fff8535b708 __CFRunLoopRun + 6488 15 com.apple.CoreFoundation 0x00007fff853598df CFRunLoopRunSpecific + 575 16 com.apple.HIToolbox 0x00007fff88510ada RunCurrentEventLoopInMode + 333 17 com.apple.HIToolbox 0x00007fff885108df ReceiveNextEventCommon + 310 18 com.apple.HIToolbox 0x00007fff88510798 BlockUntilNextEventMatchingListInMode + 59 19 com.apple.AppKit 0x00007fff840d1a2a _DPSNextEvent + 708 20 com.apple.AppKit 0x00007fff840d1379 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 21 com.apple.AppKit 0x00007fff8409705b -[NSApplication run] + 395 22 com.apple.AppKit 0x00007fff8408fd7c NSApplicationMain + 364 23 com.NZBVortex.NZBVortex 0x0000000100000fe0 start + 52 Weirdly enough the crashes seem to go away for these users when running the code in 32 bit mode. Any suggestions other then running the application in 32 bit only? Please do not dilute the feedback by asking for or blaming the code, the code is 100% solid, guaranteed! No memory leaks, the crashes clearly are triggered in 32 bit mode only just after start inside the AppKit itself like deep inside NSThread sleep's callstack.

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• Access violation when accessing a COM object from .Net

  - by Groo

  Dear Sirs, I am sorry if the post is too long, but I would be happy if someone would at least point read the bolded titles, and point me in the right direction. I am having this problem for couple of days, but was unable to found the answer on the net. These are the things I have found out so far. 1. "Access violation" exception crushes my managed application My C# WinForms app sometimes closes with an "Access violation" exception ("Attempted to read or write protected memory"), right in the moment when selecting a TabPage in a windows form TabControl. From the stack trace (try/catch around Application.Run) I can see that the exception happens at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg), called inside UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData). -- Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. -- Stack trace: at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager .System.Windows.Forms.UnsafeNativeMethods .IMsoComponentManager.FPushMessageLoop (Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext .RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext .RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(ApplicationContext context) at MyApp.Program.Main() 2. The faulting module seems to be a COM object (ChartFX Client Server 6.2) Using WinDbg (with SoS loaded), I caught it on the unmanaged side, inside ChartFX.ClientServer.Core.dll (that's a COM charting component we are using): (ca84.c98c): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=00000000 ebx=06e67c38 ecx=06e67c38 edx=000018c6 esi=06e7df30 edi=317a9e80 eip=31666110 esp=0015e040 ebp=0015e08c iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246 ChartFX_ClientServer_Core!Ordinal5507+0x97b7: 31666110 8a404d mov al,byte ptr [eax+4Dh] ds:0023:0000004d=?? [edit:] I also wasn't able to get the unmamanged stack details from WinDbg (it said "Stack unwind info not available"): 0:000 kP ChildEBP RetAddr WARNING: Stack unwind information not available. Following frames may be wrong. 0015e08c 3166288b ChartFX_ClientServer_Core!Ordinal5507+0x97b7 0015e394 3165a921 ChartFX_ClientServer_Core!Ordinal5507+0x5f32 0015e480 31678685 ChartFX_ClientServer_Core!Ordinal5496+0x26a 0015e568 3167bef4 ChartFX_ClientServer_Core!Ordinal5492+0x975 0015e668 316a356b ChartFX_ClientServer_Core!Ordinal5492+0x41e4 0015e77c 31709496 ChartFX_ClientServer_Core!Ordinal443+0x5745 0015e7d0 31707f70 ChartFX_ClientServer_Core!Ordinal2584+0x3cdc 0015e7f8 3170817d ChartFX_ClientServer_Core!Ordinal2584+0x27b6 0015e81c 3162fd76 ChartFX_ClientServer_Core!Ordinal2584+0x29c3 0015e86c 7719f8d2 ChartFX_ClientServer_Core!Ordinal899+0x6b6 0015e898 7719f794 USER32!GetMessageW+0x93 0015e910 771a06f6 USER32!GetWindowLongW+0x115 0015e940 771a069c USER32!CallWindowProcW+0x75 0015e960 747fcef4 USER32!CallWindowProcW+0x1b 0015e97c 747fd073 comctl32!Ordinal377+0x5c 0015e9e0 747fd027 comctl32!DefSubclassProc+0x92 0015ea04 747fd4e6 comctl32!DefSubclassProc+0x46 0015ea20 747fd073 comctl32!DefSubclassProc+0x505 0015ea84 747fd118 comctl32!DefSubclassProc+0x92 0015eae4 7719f8d2 comctl32!DefSubclassProc+0x137 3. Bug is not easy to reproduce (although it can be provoked usually in less than 5 min.) I have several Chart instances in several TabPages, and this usually happens while I am switching the tabs. I still don't know how to reproduce it, besides switching those tabs for several minutes before it happens, so I cannot use our source control to reliably find the build which didn't have this problem. I am accessing the charts through the managed AxChart wrapper class (derived from AxHost), which was created by VS designer automatically. 4. What should be my next step? If someone could point me to the next step I should do to find the actual cause, I would be very grateful. Experimenting (removing and returning code) does not do much good, because I don't know how to reproduce it, so it would take large amounts of time on each iteration just to convince myself that the bug is still there. I have found that people often suggest something like "switching compiler optimizations", but since the exception is not thrown deterministically, I don't want to simply rearrange some bytes and hope that it never returns. Thanks a lot in advance! Best regards, Groo

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• Configure PERL DBI and DBD in Linux

  - by Balualways

  I am new to Perl and I work in a Linux OEL 5x server. I am trying to configure the Perl DB modules for Oracle connectivity (DBD and DBI modules). Can anyone help me out in the installation procedure? I had tried CPAN didn't really worked out. Any help would be appreciated. I am not quite sure I need to initialize any variables other than $LD_LIBRARY_PATH and $ORACLE_HOME These are my observations: ISSUE:: I am getting the following issue while using the DBI module to connect to Oracle: install_driver(Oracle) failed: Can't locate loadable object for module DBD::Oracle in @INC (@INC contains: /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/5.8.8 .) at (eval 3) line 3 Compilation failed in require at (eval 3) line 3. Perhaps a module that DBD::Oracle requires hasn't been fully installed at connectdb.pl line 57 I had installed the DBD for oracle from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/DBD/DBD-Oracle-1.50 Could you please take a look into the steps and correct me if I am wrong: Observations: $ echo $LD_LIBRARY_PATH /opt/CA/UnicenterAutoSysJM/autosys/lib:/opt/CA/SharedComponents/Csam/SockAdapter/lib:/opt/CA/SharedComponents/ETPKI/lib:/opt/CA/CAlib $ echo $ORACLE_HOME /usr/local/oracle/ORA This is how I tried to install the DBD module: Download the file DBD 1.50 for Oracle Copy to /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/DBD Untar and Makefile.PL . Message: Using DBI 1.52 (for perl 5.008008 on x86_64-linux-thread-multi) installed in /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/auto/DBI/ Configuring DBD::Oracle for perl 5.008008 on linux (x86_64-linux-thread-multi) Remember to actually *READ* the README file! Especially if you have any problems. Installing on a linux, Ver#2.6 Using Oracle in /opt/oracle/product/10.2 DEFINE _SQLPLUS_RELEASE = "1002000400" (CHAR) Oracle version 10.2.0.4 (10.2) Found /opt/oracle/product/10.2/rdbms/demo/demo_rdbms.mk Found /opt/oracle/product/10.2/rdbms/demo/demo_rdbms64.mk Found /opt/oracle/product/10.2/rdbms/lib/ins_rdbms.mk Using /opt/oracle/product/10.2/rdbms/demo/demo_rdbms.mk Your LD_LIBRARY_PATH env var is set to '/usr/local/oracle/ORA/lib:/usr/dt/lib:/usr/openwin/lib:/usr/local/oracle/ORA/ows/cartx/wodbc/1.0/util/lib:/usr/local/oracle/ORA/lib:/usr/local/sybase/OCS-12_0/lib:/usr/local/sybase/lib:/home/oracle/jdbc/jdbcoci73/lib:./' WARNING: Your LD_LIBRARY_PATH env var doesn't include '/opt/oracle/product/10.2/lib' but probably needs to. Reading /opt/oracle/product/10.2/rdbms/demo/demo_rdbms.mk Reading /usr/local/oracle/ORA/rdbms/lib/env_rdbms.mk Attempting to discover Oracle OCI build rules sh: make: command not found by executing: [make -f /opt/oracle/product/10.2/rdbms/demo/demo_rdbms.mk build ECHODO=echo ECHO=echo GENCLNTSH='echo genclntsh' CC=true OPTIMIZE= CCFLAGS= EXE=DBD_ORA_EXE OBJS=DBD_ORA_OBJ.o] WARNING: Oracle build rule discovery failed (32512) Add path to make command into your PATH environment variable. Oracle oci build prolog: [sh: make: command not found] Oracle oci build command: [] WARNING: Unable to interpret Oracle build commands from /opt/oracle/product/10.2/rdbms/demo/demo_rdbms.mk. (Will continue by using fallback approach.) Please report this to [email protected]. See README for what to include. Found header files in /opt/oracle/product/10.2/rdbms/public. client_version=10.2 DEFINE= -Wall -Wno-comment -DUTF8_SUPPORT -DORA_OCI_VERSION=\"10.2.0.4\" -DORA_OCI_102 Checking for functioning wait.ph System: perl5.008008 linux ca-build9.us.oracle.com 2.6.20-1.3002.fc6xen #1 smp thu apr 30 18:08:39 pdt 2009 x86_64 x86_64 x86_64 gnulinux Compiler: gcc -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -Wdeclaration-after-statement -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm Linker: not found Sysliblist: -ldl -lm -lpthread -lnsl -lirc Oracle makefiles would have used these definitions but we override them: CC: cc CFLAGS: $(GFLAG) $(OPTIMIZE) $(CDEBUG) $(CCFLAGS) $(PFLAGS)\ $(SHARED_CFLAG) $(USRFLAGS) [$(GFLAG) -O3 $(CDEBUG) -m32 $(TRIGRAPHS_CCFLAGS) -fPIC -I/usr/local/oracle/ORA/rdbms/demo -I/usr/local/oracle/ORA/rdbms/public -I/usr/local/oracle/ORA/plsql/public -I/usr/local/oracle/ORA/network/public -DLINUX -D_GNU_SOURCE -D_LARGEFILE64_SOURCE=1 -D_LARGEFILE_SOURCE=1 -DSLTS_ENABLE -DSLMXMX_ENABLE -D_REENTRANT -DNS_THREADS -fno-strict-aliasing $(LPFLAGS) $(USRFLAGS)] build: $(CC) $(ORALIBPATH) -o $(EXE) $(OBJS) $(OCISHAREDLIBS) [ cc -L$(LIBHOME) -L/usr/local/oracle/ORA/rdbms/lib/ -o $(EXE) $(OBJS) -lclntsh $(EXPDLIBS) $(EXOSLIBS) -ldl -lm -lpthread -lnsl -lirc -ldl -lm $(USRLIBS) -lpthread] LDFLAGS: $(LDFLAGS32) [-m32 -o $@ -L/usr/local/oracle/ORA/rdbms//lib32/ -L/usr/local/oracle/ORA/lib32/ -L/usr/local/oracle/ORA/lib32/stubs/] Linking with /usr/local/oracle/ORA/rdbms/lib/defopt.o -lclntsh -ldl -lm -lpthread -lnsl -lirc -ldl -lm -lpthread [from $(DEF_OPT) $(OCISHAREDLIBS)] Checking if your kit is complete... Looks good LD_RUN_PATH=/usr/local/oracle/ORA/lib Using DBD::Oracle 1.50. Using DBD::Oracle 1.50. Using DBI 1.52 (for perl 5.008008 on x86_64-linux-thread-multi) installed in /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/auto/DBI/ Writing Makefile for DBD::Oracle Writing MYMETA.yml and MYMETA.json *** If you have problems... read all the log printed above, and the README and README.help.txt files. (Of course, you have read README by now anyway, haven't you?)

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• Adding JBoss repository to m2eclipse, no latest Hibernate version

  - by Robert

  I'm trying to add JBoss repository to m2eclipse, mainly for Hibernate. It seems to work, but it can't find the latest version of Hibernate (3.5.1), only 3.5.0beta. I looked at some other packages, and they all seem a couple of months behind. What could be causing this? I'm running latest m2eclipse, and i guess latest Eclipse (it just says 20100218-1602, eclipse people think it's funny to not include version in the about dialog), on ubuntu 9.10. This is my settings.xml <settings> <profiles> <profile> <id>jboss-maven2-release-repository</id> <activation> <activeByDefault>true</activeByDefault> </activation> <repositories> <repository> <id>jboss-maven2-release-repository</id> <url>http://repository.jboss.org/maven2</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository> <id>jboss-snapshots</id> <url>http://snapshots.jboss.org/maven2</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>jboss-releases</id> <url>http://repository.jboss.org/maven2</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </pluginRepository> <pluginRepository> <id>jboss-snapshots</id> <url>http://snapshots.jboss.org/maven2</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </pluginRepository> </pluginRepositories> </profile> </profiles>

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• Psychology researcher wants to learn new language

  - by user273347

  I'm currently considering R, matlab, or python, but I'm open to other options. Could you help me pick the best language for my needs? Here are the criteria I have in mind (not in order): Simple to learn. I don't really have a lot of free time, so I'm looking for something that isn't extremely complicated and/or difficult to pick up. I know some C, FWIW. Good for statistics/psychometrics. I do a ton of statistics and psychometrics analysis. A lot of it is basic stuff that I can do with SPSS, but I'd like to play around with the more advanced stuff too (bootstrapping, genetic programming, data mining, neural nets, modeling, etc). I'm looking for a language/environment that can help me run my simpler analyses faster and give me more options than a canned stat package like SPSS. If it can even make tables for me, then it'll be perfect. I also do a fair bit of experimental psychology. I use a canned experiment "programming" software (SuperLab) to make most of my experiments, but I want to be able to program executable programs that I can run on any computer and that can compile the data from the experiments in a spreadsheet. I know python has psychopy and pyepl and matlab has psychtoolbox, but I don't know which one is best. If R had something like this, I'd probably be sold on R already. I'm looking for something regularly used in academe and industry. Everybody else here (including myself, so far) uses canned stat and experiment programming software. One of the reasons I'm trying to learn a programming language is so that I can keep up when I move to another lab. Looking forward to your comments and suggestions. Thank you all for your kind and informative replies. I appreciate it. It's still a tough choice because of so many strong arguments for each language. Python - Thinking about it, I've forgotten so much about C already (I don't even remember what to do with an array) that it might be better for me to start from scratch with a simple program that does what it's supposed to do. It looks like it can do most of the things I'll need it to do, though not as cleanly as R and MATLAB. R - I'm really liking what I'm reading about R. The packages are perfect for my statistical work now. Given the purpose of R, I don't think it's suited to building psychological experiments though. To clarify, what I mean is making a program that presents visual and auditory stimuli to my specifications (hundreds of them in a preset and/or randomized sequence) and records the response data gathered from participants. MATLAB - It's awesome that cognitive and neuro folk are recommending MATLAB, because I'm preparing for the big leap from social and personality psychology to cognitive neuro. The problem is the Uni where I work doesn't have MATLAB licenses (and 3750 GBP for a compiler license is not an option for me haha). Octave looks like a good alternative. PsychToolbox is compatible with Octave, thankfully. SQL - Thanks for the tip. I'll explore that option, too. Python will be the least backbreaking and most useful in the short term. R is well suited to my current work. MATLAB is well suited to my prospective work. It's a tough call, but I think I am now equipped to make a more well-informed decision about where to go next. Thanks again!

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• Allow Incoming Responses Apache. On Ubuntu 11.10 - Curl

  - by Daniel Adarve

  I'm trying to get a Curl Response from an outside server, however I noticed I cant neither PING the server in question nor connect to it. I tried disabling the iptables firewall but I had no success. My server is running behind a Cisco Linksys WRTN310N Router with the DD-wrt firmware Installed. In which I already disabled the firewall. Here are my network settings: Ifconfig eth0 Link encap:Ethernet HWaddr 00:26:b9:76:73:6b inet addr:192.168.1.120 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::226:b9ff:fe76:736b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:49713 errors:0 dropped:0 overruns:0 frame:0 TX packets:30987 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:52829022 (52.8 MB) TX bytes:5438223 (5.4 MB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:341 errors:0 dropped:0 overruns:0 frame:0 TX packets:341 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:27604 (27.6 KB) TX bytes:27604 (27.6 KB) /etc/resolv.conf nameserver 192.168.1.1 /etc/nsswitch.com passwd: compat group: compat shadow: compat hosts: files dns networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis /etc/host.conf order hosts,bind multi on /etc/hosts 127.0.0.1 localhost 127.0.0.1 callcenter # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters /etc/network/interfaces # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 192.168.1.120 netmask 255.255.255.0 network 192.168.1.1 broadcast 192.168.1.255 gateway 192.168.1.1 The Url to which im trying to get a connection to is https://www.veripayment.com/integration/index.php When I ping it on terminal heres what I get daniel@callcenter:~$ ping https://www.veripayment.com/integration/index.php ping: unknown host https://www.veripayment.com/integration/index.php daniel@callcenter:~$ ping www.veripayment.com PING www.veripayment.com (69.172.200.5) 56(84) bytes of data. --- www.veripayment.com ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1007ms PHP Function in codeigniter public function authorizePayment(){ //--------------------------------------------------- // Authorize a payment //--------------------------------------------------- // Get variables from POST array $post_str = "action=payment&business=" .urlencode($this->input->post('business')) ."&vericode=" .urlencode($this->input->post('vericode')) ."&item_name=" .urlencode($this->input->post('item_name')) ."&item_code=" .urlencode($this->input->post('item_code')) ."&quantity=" .urlencode($this->input->post('quantity')) ."&amount=" .urlencode($this->input->post('amount')) ."&cc_type=" .urlencode($this->input->post('cc_type')) ."&cc_number=" .urlencode($this->input->post('cc_number')) ."&cc_expdate=" .urlencode($this->input->post('cc_expdate_year')).urlencode($this->input->post('cc_expdate_month')) ."&cc_security_code=" .urlencode($this->input->post('cc_security_code')) ."&shipment=" .urlencode($this->input->post('shipment')) ."&first_name=" .urlencode($this->input->post('first_name')) ."&last_name=" .urlencode($this->input->post('last_name')) ."&address=" .urlencode($this->input->post('address')) ."&city=" .urlencode($this->input->post('city')) ."&state_or_province=" .urlencode($this->input->post('state_or_province')) ."&zip_or_postal_code=" .urlencode($this->input->post('zip_or_postal_code')) ."&country=" .urlencode($this->input->post('country')) ."&shipping_address=" .urlencode($this->input->post('shipping_address')) ."&shipping_city=" .urlencode($this->input->post('shipping_city')) ."&shipping_state_or_province=" .urlencode($this->input->post('shipping_state_or_province')) ."&shipping_zip_or_postal_code=".urlencode($this->input->post('shipping_zip_or_postal_code')) ."&shipping_country=" .urlencode($this->input->post('shipping_country')) ."&phone=" .urlencode($this->input->post('phone')) ."&email=" .urlencode($this->input->post('email')) ."&ip_address=" .urlencode($this->input->post('ip_address')) ."&website_unique_id=" .urlencode($this->input->post('website_unique_id')); // Send URL string via CURL $backendUrl = "https://www.veripayment.com/integration/index.php"; $this->curl->create($backendUrl); $this->curl->post($post_str); $return = $this->curl->execute(); $result = array(); // Explode array where blanks are found $resparray = explode(' ', $return); if ($resparray) { // save results into an array foreach ($resparray as $resp) { $keyvalue = explode('=', $resp); if(isset($keyvalue[1])){ $result[$keyvalue[0]] = str_replace('"', '', $keyvalue[1]); } } } return $result; } This gets an empty result array. This function however works well in the previous server where the script was hosted before. No modifications where made whatsoever Thanks in Advance

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• WPF: Updating visibility of controls not updating the screen

  - by Brad McBride

  I will preface this by stating that I am new to WPF programming and may be making multiple errors. Any insight that can be provided to help me improve in my skills are greatly appreciated. I am working with a WPF application and am looping through a list of objects that contain properties that describe a document that should be built on the fly and automatically printed. I am attempting to display a small grid in the interface that shows the document being built before it is printed. This serves two purposes: one, it allows the user to see work being done by the application. Two, it renders the items on the screen so that I can then have something to actually print since WPF appears to not be able to load an image for printing dynamicaly without displaying it on the screen. In my code, I am setting the various elements in the grid and setting the visibility to visible. However, the UI is not updating and the printed document doesn't look as intended since the image never shows up on the screen. Here is the XAML that I have set up <Grid x:Name="LayoutRoot" Background="Black"> <Grid Name="previewGrid" Grid.Row="1" Grid.Column="1" Background="White" Visibility="Hidden"> <Canvas Name="pageCanvas" HorizontalAlignment="Center" VerticalAlignment="Center"> <Grid Name="pageGrid" Width="163" Height="211"> <Grid.ColumnDefinitions> <ColumnDefinition Width="81.5"></ColumnDefinition> <ColumnDefinition Width="81.5"></ColumnDefinition> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Name="copyright" TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Bottom"></TextBlock> <Image Name="pageImage" Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Center"></Image> </Grid> </Canvas> .....canvas for pages 2-4 not shown but structure is the same as for pageGrid..... </Grid> </Grid> </Window> Here is the code behind that is supposed to set the elements. previewGrid.Visibility = Windows.Visibility.Visible pageURI = New Uri(pageCollection(i).iamgeURL, UriKind.Absolute) pageGrid.Visibility = Windows.Visibility.Visible bmp.BeginInit() bmp.StreamSource = getCachedURLStream(cardURI) bmp.EndInit() pageImage.Source = bmp copyright.Text = copyrightText cardPreviewGrid.UpdateLayout() ' More code that prints the visual element pageGrid previewGrid.Visibility = Windows.Visibility.Hidden The code in codebehind loops through a number of times depending on how many different documents the user prints. Basically it builds a visual element for a page, prints an XPS version of it and then builds the next page and prints it, etc. Once all pages have been processed, the job is actually sent to the printer. The only purpose of this application is to let the user print these documents so there is not other task that they can do in the application while the documents print. I thought that putting this task in a background thread would help to update the UI but since I am trying to manipulate items directly on the UI thread it would appear that this option won't work for me. What am I doing wrong here and how can I improve the code so that I can get the behavior that I am trying to achieve?

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• Run javascript after form submission in update panel?

  - by AverageJoe719

  This is driving me crazy! I have read at least 5 questions on here closely related to my problem, and probably 5 or so more pages just from googling. I just don't get it. I am trying to have a jqueryui dialog come up after a user fills out a form saying 'registration submitted' and then redirecting to another page, but I cannot for the life of me get any javascript to work, not even a single alert. Here is my update panel: <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdatePanel ID="upForm" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="False"> <ContentTemplate> 'Rest of form' <asp:Button ID="btnSubmit" runat="server" Text="Submit" /> <p>Did register Pass? <%= registrationComplete %></p> </ContentTemplate> </asp:UpdatePanel> The Jquery I want to execute: (Right now this is sitting in the head of the markup, with autoOpen set to false) <script type="text/javascript"> function pageLoad() { $('#registerComplete').dialog({ autoOpen: true, width: 270, resizable: false, modal: true, draggable: false, buttons: { "Ok": function() { window.location.href = "someUrl"; } } }); } </script> Finally my code behind: ( Commented out all the things I've tried) Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnSubmit.Click 'Dim sbScript As New StringBuilder()' registrationComplete = True registrationUpdatePanel.Update() 'sbScript.Append("<script language='JavaScript' type='text/javascript'>" + ControlChars.Lf)' 'sbScript.Append("<!--" + ControlChars.Lf)' 'sbScript.Append("window.location.reload()" + ControlChars.Lf)' 'sbScript.Append("// -->" + ControlChars.Lf)' 'sbScript.Append("</")' 'sbScript.Append("script>" + ControlChars.Lf)' 'ScriptManager.RegisterClientScriptBlock(Me.Page, Me.GetType(), "AutoPostBack", sbScript.ToString(), False)' 'ClientScript.RegisterStartupScript("AutoPostBackScript", sbScript.ToString())' 'Response.Write("<script type='text/javascript'>alert('Test')</script>")' 'Response.Write("<script>windows.location.reload()</script>")' End Sub I've tried: Passing variables from server to client via inline <%= % in the javascript block of the head tag. Putting that same code in a script tag inside the updatePanel. Tried to use RegisterClientScriptBlock and RegisterStartUpScript Just doing a Response.Write with the script tag written in it. Tried various combinations of putting the entire jquery.dialog code in the registerstartup script, or just trying to change the autoOpen property, or just calling "open" on it. I can't even get a simple alert to work with any of these, so I am doing something wrong but I just don't know what it is. Here is what I know: The Jquery is binding properly even on async postbacks, because the div container that is the dialog box is always invisible, I saw a similiar post on here stating that was causing an issue, this isn't the case here. Using page_load instead of document.ready since that is supposed to run on both async and normal postbacks, so that isn't the issue. The update panel is updating correctly because <p>Did register Pass? <%= registrationComplete %></p> updates to true after I submit the form. So how can I make this work? All I want is - click submit button inside an update panel - run server side code to validate form and insert into db - if everything succeeded, have that jquery (modal) dialog pop up saying hey it worked.

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• Can't access a map member from a pointer

  - by fjfnaranjo

  Hi. That's my first question :) I'm storing the configuration of my program in a Group->Key->Value form, like the old INIs. I'm storing the information in a pair of structures. First one, I'm using a std::map with string+ptr for the groups info (the group name in the string key). The second std::map value is a pointer to the sencond structure, a std::list of std::maps, with the finish Key->Value pairs. The Key-Value pairs structure is created dynamically, so the config structure is: std::map< std::string , std::list< std::map<std::string,std::string> >* > lv1; Well, I'm trying to implement two methods to check the existence of data in the internal config. The first one, check the existence of a group in the structure: bool isConfigLv1(std::string); bool ConfigManager::isConfigLv1(std::string s) { return !(lv1.find(s)==lv1.end()); } The second method, is making me crazy... It check the existence for a key inside a group. bool isConfigLv2(std::string,std::string); bool ConfigManager::isConfigLv2(std::string s,std::string d) { if(!isConfigLv1(s)) return false; std::map< std::string , std::list< std::map<std::string,std::string> >* >::iterator it; std::list< std::map<std::string,std::string> >* keyValue; std::list< std::map<std::string,std::string> >::iterator keyValueIt; it = lv1.find(s); keyValue = (*it).second; for ( keyValueIt = keyValue->begin() ; keyValueIt != keyValue->end() ; keyValueIt++ ) if(!((*keyValueIt).second.find(d)==(*keyValueIt).second.end())) return true; return false; } I don't understand what is wrong. The compiler says: ConfigManager.cpp||In member function ‘bool ConfigManager::isConfigLv2(std::string, std::string)’:| ConfigManager.cpp|(line over return true)|error: ‘class std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >’ has no member named ‘second’| But it has to have the second member, because it's a map iterator... Any suggestion about what's happening? Sorry for my English :P, and consider I'm doing it as a exercise, I know there are a lot of cool configuration managers.

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• WFP: How do you properly Bind a DependencyProperty to the GUI

  - by Robert Ross

  I have the following class (abreviated for simplicity). The app it multi-threaded so the Set and Get are a bit more complicated but should be ok. namespace News.RSS { public class FeedEngine : DependencyObject { public static readonly DependencyProperty _processing = DependencyProperty.Register("Processing", typeof(bool), typeof(FeedEngine), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.AffectsRender)); public bool Processing { get { return (bool)this.Dispatcher.Invoke( DispatcherPriority.Normal, (DispatcherOperationCallback)delegate { return GetValue(_processing); }, Processing); } set { this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (SendOrPostCallback)delegate { SetValue(_processing, value); }, value); } } public void Poll() { while (Running) { Processing = true; //Do my work to read the data feed from remote source Processing = false; Thread.Sleep(PollRate); } // } } } Next I have my main form as the following: <Window x:Class="News.Main" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:converter="clr-namespace:News.Converters" xmlns:local="clr-namespace:News.Lookup" xmlns:rss="clr-namespace:News.RSS" Title="News" Height="521" Width="927" Initialized="Window_Initialized" Closing="Window_Closing" > <Window.Resources> <ResourceDictionary> <converter:BooleanConverter x:Key="boolConverter" /> <converter:ArithmeticConverter x:Key="arithConverter" /> ... </ResourceDictionary> </Window.Resources> <DockPanel Name="dockPanel1" SnapsToDevicePixels="False" > <ToolBarPanel Height="37" Name="toolBarPanel" Orientation="Horizontal" DockPanel.Dock="Top" > <ToolBarPanel.Children> <Button DataContext="{DynamicResource FeedEngine}" HorizontalAlignment="Right" Name="btnSearch" ToolTip="Search" Click="btnSearch_Click" IsEnabled="{Binding Path=Processing, Converter={StaticResource boolConverter}}"> <Image Width="32" Height="32" Name="imgSearch" Source="{Resx ResxName=News.Properties.Resources, Key=Search}" /> </Button> ... </DockPanel> </Window> As you can see I set the DataContext to FeedEngine and Bind IsEnabled to Processing. I have also tested the boolConverter separately and it functions (just applies ! (Not) to a bool). Here is my Main window code behind in case it helps to debug. namespace News { /// <summary> /// Interaction logic for Main.xaml /// </summary> public partial class Main : Window { public FeedEngine _engine; List<NewsItemControl> _newsItems = new List<NewsItemControl>(); Thread _pollingThread; public Main() { InitializeComponent(); this.Show(); } private void Window_Initialized(object sender, EventArgs e) { // Load current Feed data. _engine = new FeedEngine(); ThreadStart start = new ThreadStart(_engine.Poll); _pollingThread = new Thread(start); _pollingThread.Start(); } } } Hope someone can see where I missed a step. Thanks.

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• Why C# doesn't implement indexed properties ?

  - by Thomas Levesque

  I know, I know... Eric Lippert's answer to this kind of question is usually something like "because it wasn't worth the cost of designing, implementing, testing and documenting it". But still, I'd like a better explanation... I was reading this blog post about new C# 4 features, and in the section about COM Interop, the following part caught my attention : By the way, this code uses one more new feature: indexed properties (take a closer look at those square brackets after Range.) But this feature is available only for COM interop; you cannot create your own indexed properties in C# 4.0. OK, but why ? I already knew and regretted that it wasn't possible to create indexed properties in C#, but this sentence made me think again about it. I can see several good reasons to implement it : the CLR supports it (for instance, PropertyInfo.GetValue has an index parameter), so it's a pity we can't take advantage of it in C# it is supported for COM interop, as shown in the article (using dynamic dispatch) it is implemented in VB.NET it is already possible to create indexers, i.e. to apply an index to the object itself, so it would probably be no big deal to extend the idea to properties, keeping the same syntax and just replacing this with a property name It would allow to write that kind of things : public class Foo { private string[] _values = new string[3]; public string Values[int index] { get { return _values[index]; } set { _values[index] = value; } } } Currently the only workaround that I know is to create an inner class (ValuesCollection for instance) that implements an indexer, and change the Values property so that it returns an instance of that inner class. This is very easy to do, but annoying... So perhaps the compiler could do it for us ! An option would be to generate an inner class that implements the indexer, and expose it through a public generic interface : // interface defined in the namespace System public interface IIndexer<TIndex, TValue> { TValue this[TIndex index] { get; set; } } public class Foo { private string[] _values = new string[3]; private class <>c__DisplayClass1 : IIndexer<int, string> { private Foo _foo; public <>c__DisplayClass1(Foo foo) { _foo = foo; } public string this[int index] { get { return _foo._values[index]; } set { _foo._values[index] = value; } } } private IIndexer<int, string> <>f__valuesIndexer; public IIndexer<int, string> Values { get { if (<>f__valuesIndexer == null) <>f__valuesIndexer = new <>c__DisplayClass1(this); return <>f__valuesIndexer; } } } But of course, in that case the property would actually return a IIndexer<int, string>, and wouldn't really be an indexed property... It would be better to generate a real CLR indexed property. What do you think ? Would you like to see this feature in C# ? If not, why ?

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