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• Help me get my 3D camera to look like the ones in RTS

  - by rFactor

  I am a newbie in 3D game development and I am trying to make a real-time strategy game. I am struggling with the camera currently as I am unable to make it look like they do in RTS games. Here is my Camera.cs class using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Input; namespace BB { public class Camera : Microsoft.Xna.Framework.GameComponent { public Matrix view; public Matrix projection; protected Game game; KeyboardState currentKeyboardState; Vector3 cameraPosition = new Vector3(600.0f, 0.0f, 600.0f); Vector3 cameraForward = new Vector3(0, -0.4472136f, -0.8944272f); BoundingFrustum cameraFrustum = new BoundingFrustum(Matrix.Identity); // Light direction Vector3 lightDir = new Vector3(-0.3333333f, 0.6666667f, 0.6666667f); public Camera(Game game) : base(game) { this.game = game; } public override void Initialize() { this.view = Matrix.CreateLookAt(this.cameraPosition, this.cameraPosition + this.cameraForward, Vector3.Up); this.projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, this.game.renderer.aspectRatio, 1, 10000); base.Initialize(); } /* Handles the user input * @ param GameTime gameTime */ private void HandleInput(GameTime gameTime) { float time = (float)gameTime.ElapsedGameTime.TotalMilliseconds; currentKeyboardState = Keyboard.GetState(); } void UpdateCamera(GameTime gameTime) { float time = (float)gameTime.ElapsedGameTime.TotalMilliseconds; // Check for input to rotate the camera. float pitch = 0.0f; float turn = 0.0f; if (currentKeyboardState.IsKeyDown(Keys.Up)) pitch += time * 0.001f; if (currentKeyboardState.IsKeyDown(Keys.Down)) pitch -= time * 0.001f; if (currentKeyboardState.IsKeyDown(Keys.Left)) turn += time * 0.001f; if (currentKeyboardState.IsKeyDown(Keys.Right)) turn -= time * 0.001f; Vector3 cameraRight = Vector3.Cross(Vector3.Up, cameraForward); Vector3 flatFront = Vector3.Cross(cameraRight, Vector3.Up); Matrix pitchMatrix = Matrix.CreateFromAxisAngle(cameraRight, pitch); Matrix turnMatrix = Matrix.CreateFromAxisAngle(Vector3.Up, turn); Vector3 tiltedFront = Vector3.TransformNormal(cameraForward, pitchMatrix * turnMatrix); // Check angle so we cant flip over if (Vector3.Dot(tiltedFront, flatFront) > 0.001f) { cameraForward = Vector3.Normalize(tiltedFront); } // Check for input to move the camera around. if (currentKeyboardState.IsKeyDown(Keys.W)) cameraPosition += cameraForward * time * 0.4f; if (currentKeyboardState.IsKeyDown(Keys.S)) cameraPosition -= cameraForward * time * 0.4f; if (currentKeyboardState.IsKeyDown(Keys.A)) cameraPosition += cameraRight * time * 0.4f; if (currentKeyboardState.IsKeyDown(Keys.D)) cameraPosition -= cameraRight * time * 0.4f; if (currentKeyboardState.IsKeyDown(Keys.R)) { cameraPosition = new Vector3(0, 50, 50); cameraForward = new Vector3(0, 0, -1); } cameraForward.Normalize(); // Create the new view matrix view = Matrix.CreateLookAt(cameraPosition, cameraPosition + cameraForward, Vector3.Up); // Set the new frustum value cameraFrustum.Matrix = view * projection; } public override void Update(Microsoft.Xna.Framework.GameTime gameTime) { HandleInput(gameTime); UpdateCamera(gameTime); } } } The problem is that the initial view is looking in a horizontal direction. I would like to have an RTS like top down view (but with a slight pitch). Can you help me out?

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• RPi and Java Embedded GPIO: Sensor Reading using Java Code

  - by hinkmond

  And, now to program the Java code for reading the fancy-schmancy static electricity sensor connected to your Raspberry Pi, here is the source code we'll use: First, we need to initialize ourselves... /* * Java Embedded Raspberry Pi GPIO Input app */ package jerpigpioinput; import java.io.FileWriter; import java.io.RandomAccessFile; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; /** * * @author hinkmond */ public class JerpiGPIOInput { static final String GPIO_IN = "in"; // Add which GPIO ports to read here static String[] GpioChannels = { "7" }; /** * @param args the command line arguments */ public static void main(String[] args) { try { /*** Init GPIO port(s) for input ***/ // Open file handles to GPIO port unexport and export controls FileWriter unexportFile = new FileWriter("/sys/class/gpio/unexport"); FileWriter exportFile = new FileWriter("/sys/class/gpio/export"); for (String gpioChannel : GpioChannels) { System.out.println(gpioChannel); // Reset the port unexportFile.write(gpioChannel); unexportFile.flush(); // Set the port for use exportFile.write(gpioChannel); exportFile.flush(); // Open file handle to input/output direction control of port FileWriter directionFile = new FileWriter("/sys/class/gpio/gpio" + gpioChannel + "/direction"); // Set port for input directionFile.write(GPIO_IN); directionFile.flush(); } And, next we will open up a RandomAccessFile pointer to the GPIO port. /*** Read data from each GPIO port ***/ RandomAccessFile[] raf = new RandomAccessFile[GpioChannels.length]; int sleepPeriod = 10; final int MAXBUF = 256; byte[] inBytes = new byte[MAXBUF]; String inLine; int zeroCounter = 0; // Get current timestamp with Calendar() Calendar cal; DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS"); String dateStr; // Open RandomAccessFile handle to each GPIO port for (int channum=0; channum Then, loop forever to read in the values to the console. // Loop forever while (true) { // Get current timestamp for latest event cal = Calendar.getInstance(); dateStr = dateFormat.format(cal.getTime()); // Use RandomAccessFile handle to read in GPIO port value for (int channum=0; channum Rinse, lather, and repeat... Compile this Java code on your host PC or Mac with javac from the JDK. Copy over the JAR or class file to your Raspberry Pi, "sudo -i" to become root, then start up this Java app in a shell on your RPi. That's it! You should see a "1" value get logged each time you bring a statically charged item (like a balloon you rub on the cat) near the antenna of the sensor. There you go. You've just seen how Java Embedded technology on the Raspberry Pi is an easy way to access sensors. Hinkmond

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• Is there an easy way to type in common math symbols?

  - by srcspider

  Disclaimer: I'm sure someone is going to moan about easy-of-use, for the purpose of this question consider readability to be the only factor that matters So I found this site that converts to easting northing, it's not really important what that even means but here's how the piece of javascript looks. /** * Convert Ordnance Survey grid reference easting/northing coordinate to (OSGB36) latitude/longitude * * @param {OsGridRef} gridref - easting/northing to be converted to latitude/longitude * @returns {LatLonE} latitude/longitude (in OSGB36) of supplied grid reference */ OsGridRef.osGridToLatLong = function(gridref) { var E = gridref.easting; var N = gridref.northing; var a = 6377563.396, b = 6356256.909; // Airy 1830 major & minor semi-axes var F0 = 0.9996012717; // NatGrid scale factor on central meridian var f0 = 49*Math.PI/180, ?0 = -2*Math.PI/180; // NatGrid true origin var N0 = -100000, E0 = 400000; // northing & easting of true origin, metres var e2 = 1 - (b*b)/(a*a); // eccentricity squared var n = (a-b)/(a+b), n2 = n*n, n3 = n*n*n; // n, n², n³ var f=f0, M=0; do { f = (N-N0-M)/(a*F0) + f; var Ma = (1 + n + (5/4)*n2 + (5/4)*n3) * (f-f0); var Mb = (3*n + 3*n*n + (21/8)*n3) * Math.sin(f-f0) * Math.cos(f+f0); var Mc = ((15/8)*n2 + (15/8)*n3) * Math.sin(2*(f-f0)) * Math.cos(2*(f+f0)); var Md = (35/24)*n3 * Math.sin(3*(f-f0)) * Math.cos(3*(f+f0)); M = b * F0 * (Ma - Mb + Mc - Md); // meridional arc } while (N-N0-M >= 0.00001); // ie until < 0.01mm var cosf = Math.cos(f), sinf = Math.sin(f); var ? = a*F0/Math.sqrt(1-e2*sinf*sinf); // nu = transverse radius of curvature var ? = a*F0*(1-e2)/Math.pow(1-e2*sinf*sinf, 1.5); // rho = meridional radius of curvature var ?2 = ?/?-1; // eta = ? var tanf = Math.tan(f); var tan2f = tanf*tanf, tan4f = tan2f*tan2f, tan6f = tan4f*tan2f; var secf = 1/cosf; var ?3 = ?*?*?, ?5 = ?3*?*?, ?7 = ?5*?*?; var VII = tanf/(2*?*?); var VIII = tanf/(24*?*?3)*(5+3*tan2f+?2-9*tan2f*?2); var IX = tanf/(720*?*?5)*(61+90*tan2f+45*tan4f); var X = secf/?; var XI = secf/(6*?3)*(?/?+2*tan2f); var XII = secf/(120*?5)*(5+28*tan2f+24*tan4f); var XIIA = secf/(5040*?7)*(61+662*tan2f+1320*tan4f+720*tan6f); var dE = (E-E0), dE2 = dE*dE, dE3 = dE2*dE, dE4 = dE2*dE2, dE5 = dE3*dE2, dE6 = dE4*dE2, dE7 = dE5*dE2; f = f - VII*dE2 + VIII*dE4 - IX*dE6; var ? = ?0 + X*dE - XI*dE3 + XII*dE5 - XIIA*dE7; return new LatLonE(f.toDegrees(), ?.toDegrees(), GeoParams.datum.OSGB36); } I found that to be a really nice way of writing an algorythm, at least as far as redability is concerned. Is there any way to easily write the special symbols. And by easily write I mean NOT copy/paste them.

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• Some PowerShell goodness

  - by KyleBurns

  Ever work somewhere where processes dump files into folders to maintain an archive?  Me too and Windows Explorer hates it.  Very often I find myself needing to organize these files into subfolders so that I can go after files without locking up Windows Explorer and my answer used to be to write a program in something like C# to do the job.  These programs will typically enumerate the files in a folder and move each file to a subdirectory named based on a datestamp.  The last such program I wrote had to use lower-level Win32 API calls to perform the enumeration because it appears the standard .Net calls make use of the same method of enumerating the directories that Windows Explorer chokes on when dealing with a large number of entries in a particular directory, so a simple task was accomplished with a lot of code. Of course, this little utility was just something I used to make my life easier and "not a production app", so it was in my local source folder and not source control when my hard drive died.  So... I was getting ready to re-create it and thought it might be a good idea to play with PowerShell a bit - something I had been wanting to do but had not yet met a requirement to make me do it.  The resulting script was amazingly succinct and even building the flexibility for parameterization and adding line breaks for readability was only about 25 lines long.  Here's the code with discussion following: param(     [Parameter(         Mandatory = $false,         Position = 0,         HelpMessage = "Root of the folders or share to archive.  Be sure to end with appropriate path separator"     )]     [String] $folderRoot="\\fileServer\pathToFolderWithLotsOfFiles\",       [Parameter(         Mandatory = $false,         Position = 1     )]     [int] $days = 1 ) dir $folderRoot|?{(!($_.PsIsContainer)) -and ((get-date) - $_.lastwritetime).totaldays -gt $days }|%{     [string]$year=$([string]$_.lastwritetime.year)     [string]$month=$_.lastwritetime.month     [string]$day=$_.lastwritetime.day     $dir=$folderRoot+$year+"\"+$month+"\"+$day     if(!(test-path $dir)){         new-item -type container $dir     }     Write-output $_     move-item $_.fullname $dir } The script starts by declaring two parameters.  The first parameter holds the path to the folder that I am going to be sorting into subdirectories.  The path separator is intended to be included in this argument because I didn't want to mess with determining whether this was local or UNC and picking the right separator in code, but this could be easily improved upon using Path.Combine since PowerShell has access to the full framework libraries.  The second parameter holds a minimum age in days for files to be removed from the root folder.  The script then pipes the dir command through a query to include only files (by excluding containers) and of those, only entries that meet the age requirement based on the last modified datestamp.  For each of those, the datestamp is used to construct a folder name in the format YYYY\MM\DD (if you're in an environment where even a day's worth of files need further divided, you could make this more granular) and the folder is created if it does not yet exist.  Finally, the file is moved into the directory. One of the things that was really cool about using PowerShell for this task is that the new-item command is smart enough to create the entire subdirectory structure with a single call.  In previous code that I have written to do this kind of thing, I would have to test the entire tree leading down to the subfolder I want, leading to a lot of branching code that detracted from being able to quickly look at the code and understand the job it performs. Overall, I have to say I'm really pleased with what has been done making PowerShell powerful and useful.

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• Procedual level generation for a platformer game (tilebased) using player physics

  - by Notbad

  I have been searching for information about how to build a 2d world generator (tilebased) for a platformer game I am developing. The levels should look like dungeons with a ceiling and a floor and they will have a high probability of being just made of horizontal rooms but sometimes they can have exits to a top/down room. Here is an example of what I would like to achieve. I'm refering only to the caves part. I know level design won't be that great when generated but I think it is possible to have something good enough for people to enjoy the procedural maps (Note: Supermetrod Spoiler!): http://www.snesmaps.com/maps/SuperMetroid/SuperMetroidMapNorfair.html Well, after spending some time thinking about this I have some ideas to create the maps that I would like to share with you: 1) I have read about celular automatas and I would like to use them to carve the rooms but instead of carving just a tile at once I would like to carve full columns of tiles. Of course this carving system will have some restrictions like how many tiles must be left for the roof and the ceiling, etc... This way I could get much cleaner rooms than using the ussual automata. 2) I want some branching into the rooms. It will have little probability to happen but I definitely want it. Thinking about carving I came to the conclusion that I could be using some sort of path creation algorithm that the carving system would follow to create a path in the rooms. This could be more noticiable if we make the carving system to carve columns with the height of a corridor or with the height of a wide room (this will be added to the system as a param). This way at some point I could spawn a new automa beside the main one to create braches. This new automata should play side by side with the first one to create dead ends, islands (both paths created by the automatas meet at some point or lead to the same room. It would be too long to explain here all the tests I have done, etc... just will try to summarize the problems to see if anyone could bring some light to solve them (I don't mind sharing my successes but I think they aren't too relevant): 1) Zone reachability: How can I make sure that the player will be able to reach all zones I created (mainly when branches happen or vertical rooms are created). When branches are created I have to make sure that there will be a way to get onto the new created branch. I mean a bifurcation that the player could follow. Player will follow the main path or jump to a platform to get onto the other way). On the other hand if an island is created by the meeting of both branches I need to make sure the player will be able to get onto the island too. 2) When a branch is created and corridors are generated for each branch how can I make then both merge or repel to create an island or just make them separated corridors. 3) When I create a branch and an island is created becasue both corridors merge at somepoint or they lead to the same room, is there any way to detect this and randomize where to create the needed platforms to get onto the created isle? This platforms could be created at the start of the island or at the end. I guess part of the problem could be solved using some sort of graph following the created paths but I'm a bit lost in this sea of precedural content creation :). On the other hand I don't expect a solution to the problem but some information to get me moving forward again. Thanks in advance.

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• Optimal Data Structure for our own API

  - by vermiculus

  I'm in the early stages of writing an Emacs major mode for the Stack Exchange network; if you use Emacs regularly, this will benefit you in the end. In order to minimize the number of calls made to Stack Exchange's API (capped at 10000 per IP per day) and to just be a generally responsible citizen, I want to cache the information I receive from the network and store it in memory, waiting to be accessed again. I'm really stuck as to what data structure to store this information in. Obviously, it is going to be a list. However, as with any data structure, the choice must be determined by what data is being stored and what how it will be accessed. What, I would like to be able to store all of this information in a single symbol such as stack-api/cache. So, without further ado, stack-api/cache is a list of conses keyed by last update: `(<csite> <csite> <csite>) where <csite> would be (1362501715 . <site>) At this point, all we've done is define a simple association list. Of course, we must go deeper. Each <site> is a list of the API parameter (unique) followed by a list questions: `("codereview" <cquestion> <cquestion> <cquestion>) Each <cquestion> is, you guessed it, a cons of questions with their last update time: `(1362501715 <question>) (1362501720 . <question>) <question> is a cons of a question structure and a list of answers (again, consed with their last update time): `(<question-structure> <canswer> <canswer> <canswer> and ` `(1362501715 . <answer-structure>) This data structure is likely most accurately described as a tree, but I don't know if there's a better way to do this considering the language, Emacs Lisp (which isn't all that different from the Lisp you know and love at all). The explicit conses are likely unnecessary, but it helps my brain wrap around it better. I'm pretty sure a <csite>, for example, would just turn into (<epoch-time> <api-param> <cquestion> <cquestion> ...) Concerns: Does storing data in a potentially huge structure like this have any performance trade-offs for the system? I would like to avoid storing extraneous data, but I've done what I could and I don't think the dataset is that large in the first place (for normal use) since it's all just human-readable text in reasonable proportion. (I'm planning on culling old data using the times at the head of the list; each inherits its last-update time from its children and so-on down the tree. To what extent this cull should take place: I'm not sure.) Does storing data like this have any performance trade-offs for that which must use it? That is, will set and retrieve operations suffer from the size of the list? Do you have any other suggestions as to what a better structure might look like?

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• Passing a parameter using RelayCommand defined in the ViewModel (from Josh Smith example)

  - by eesh

  I would like to pass a parameter defined in the XAML (View) of my application to the ViewModel class by using the RelayCommand. I followed Josh Smith's excellent article on MVVM and have implemented the following. XAML Code <Button Command="{Binding Path=ACommandWithAParameter}" CommandParameter="Orange" HorizontalAlignment="Left" Style="{DynamicResource SimpleButton}" VerticalAlignment="Top" Content="Button"/> ViewModel Code public RelayCommand _aCommandWithAParameter; /// <summary> /// Returns a command with a parameter /// </summary> public RelayCommand ACommandWithAParameter { get { if (_aCommandWithAParameter == null) { _aCommandWithAParameter = new RelayCommand( param => this.CommandWithAParameter("Apple") ); } return _aCommandWithAParameter; } } public void CommandWithAParameter(String aParameter) { String theParameter = aParameter; } #endregion I set a breakpoint in the CommandWithAParameter method and observed that aParameter was set to "Apple", and not "Orange". This seems obvious as the method CommandWithAParameter is being called with the literal String "Apple". However, looking up the execution stack, I can see that "Orange", the CommandParameter I set in the XAML is the parameter value for RelayCommand implemenation of the ICommand Execute interface method. That is the value of parameter in the method below of the execution stack is "Orange", public void Execute(object parameter) { _execute(parameter); } What I am trying to figure out is how to create the RelayCommand ACommandWithAParameter property such that it can call the CommandWithAParameter method with the CommandParameter "Orange" defined in the XAML. Is there a way to do this? Why do I want to do this? Part of "On The Fly Localization" In my particular implementation I want to create a SetLanguage RelayCommand that can be bound to multiple buttons. I would like to pass the two character language identifier ("en", "es", "ja", etc) as the CommandParameter and have that be defined for each "set language" button defined in the XAML. I want to avoid having to create a SetLanguageToXXX command for each language supporting and hard coding the two character language identifier into each RelayCommand in the ViewModel.

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• JUnit Easymock Unexpected method call

  - by Lancelot

  Hi, I'm trying to setup a test in JUnit w/ EasyMock and I'm running into a small issue that I can't seem to wrap my head around. I was hoping someone here could help. Here is a simplified version of the method I'm trying to test: public void myMethod() { //Some code executing here Obj myObj = this.service.getObj(param); if (myObj.getExtId() != null) { OtherObj otherObj = new OtherObj(); otherObj.setId(myObj.getExtId()); this.dao.insert(otherObj); } //Some code executing there } Ok so using EasyMock I've mocked the service.getObj(myObj) call and that works fine. My problem comes when JUnit hits the dao.insert(otherObj) call. EasyMock throws a "Unexpected Method Call" on it. I wouldn't mind mocking that dao in my test and using expectLastCall().once(); on it, but that assumes that I have a handle on the "otherObj" that's passed as a parameter at insert time... Which of course I don't since it's conditionally created within the context of the method being tested. Anyone has ever had to deal with that and somehow solved it? Thanks.

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• MVCContrib ActionFilter PassParametersDuringRedirect still passes reference type in querystring

  - by redsquare

  I am attempting to use the PRG pattern in an asp.net mvc 2 rc application. I found that the MVCContrib project has a custom action filter that will auto persist the parameters in TempData In an action I have the following return this.RedirectToAction(c => c.Requested(accountAnalysis)); however this is adding a querystring param to the request e.g http://mysite.com/account/add?model=MyProject.Models.AccountAnalysisViewModel Can anyone explain how I can use the PassParametersDuringRedirect filter attribute from MVCContrib to not pass the ViewModel type in the querystring. I see a patch was issued to fix this however in the latest MvcContrib that supports MVC 2 RC it is commented out as follows public static RedirectToRouteResult RedirectToAction<T>(this Controller controller, Expression<Action<T>> action) where T : Controller { /*var body = action.Body as MethodCallExpression; AddParameterValuesFromExpressionToTempData(controller, body); var routeValues = Microsoft.Web.Mvc.Internal.ExpressionHelper.GetRouteValuesFromExpression(action); RemoveReferenceTypesFromRouteValues(routeValues); return new RedirectToRouteResult(routeValues);*/ return new RedirectToRouteResult<T>(action); } Any help much appreciated. Thanks

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• How to get selected row index in JSF datatable?

  - by Nitesh Panchal

  I have a databale on index.xhtml <h:dataTable style="border: solid 2px black;" value="#{IndexBean.bookList}" var="item" binding="#{IndexBean.datatableBooks}"> <h:column> <h:commandButton value="Edit" actionListener="#{IndexBean.editBook}"> <f:param name="index" value="#{IndexBean.datatableBooks.rowIndex}"/> </h:commandButton> </h:column> </h:dataTable> My bean: @ManagedBean(name="IndexBean") @ViewScoped public class IndexBean implements Serializable { private HtmlDataTable datatableBooks; public HtmlDataTable getDatatableBooks() { return datatableBooks; } public void setDatatableBooks(HtmlDataTable datatableBooks) { this.datatableBooks = datatableBooks; } public void editBook() throws IOException{ int index = Integer.parseInt(FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("index").toString()); System.out.println(index); } } My problem is that I always get the same index in server log even though I click the different edit buttons. Imagine that there is one collection which is supplied to the datatable. I have not shown that in bean. If I change scope from ViewScope to RequestScope it works fine. What can be the problem with @ViewScoped? Thanks in advance :) EDIT: <h:column> <h:commandButton value="Edit" actionListener="#{IndexBean.editBook}" /> </h:column> public void editBook(ActionEvent ev) throws IOException{ if (ev.getSource() != null && ev.getSource() instanceof HtmlDataTable) { HtmlDataTable objHtmlDataTable = (HtmlDataTable) ev.getSource(); System.out.println(objHtmlDataTable.getRowIndex()); } }

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• Read multiple tables from dataset in Powershell

  - by Lucas

  I am using a function that collects data from a SQL server: function Invoke-SQLCommand { param( [string] $dataSource = "myserver", [string] $dbName = "mydatabase", [string] $sqlCommand = $(throw "Please specify a query.") ) $SqlConnection = New-Object System.Data.SqlClient.SqlConnection $SqlConnection.ConnectionString = "Server=$dataSource;Database=$dbName;Integrated Security=True" $SqlCmd = New-Object System.Data.SqlClient.SqlCommand $SqlCmd.CommandText = $sqlCommand $SqlCmd.Connection = $SqlConnection $SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter $SqlAdapter.SelectCommand = $SqlCmd $DataSet = New-Object System.Data.DataSet $SqlAdapter.Fill($DataSet) $SqlConnection.Close() $DataSet.Tables[0] } It works great but returns only one table. I am passing several Select statements, so the dataset contains multiple tables. I replaced $DataSet.Tables[0] with for ($i=0;$i -lt $DataSet.tables.count;$i++){ $Dataset.Tables[$i] } but the console only shows the content of the first table and blank lines for each records of what should be the second table. The only way to see the result is to change the code to $Dataset.Tables[$i] | out-string but I do not want strings, I want to have table objects to work with. When I assign what is returned by the Invoke-SQLCommand to a variable, I can see that I have an array of datarow objects but only from the first table. What happened to the second table? Any help would be greatly appreciated. Thanks

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• Error in simple Java application

  - by mrblah

  Just playing around with java trying to learn it etc. Here is my code so far, using HtmlUnit. package hsspider; import com.gargoylesoftware.htmlunit.WebClient; /** * @author */ public class Main { /** * @param args the command line arguments */ public static void main(String[] args) { System.out.println("starting "); Spider spider = new Spider(); spider.Test(); } } package hsspider; import com.gargoylesoftware.htmlunit.WebClient; import com.gargoylesoftware.htmlunit.html.HtmlPage; /** * @author */ public class Spider { public void Test() throws Exception { final WebClient webClient = new WebClient(); final HtmlPage page = webClient.getPage("http://www.google.com"); System.out.println(page.getTitleText()); } } I am using Netbeans. I can't seem to figure out what the problem is, why doesn't it compile? The error: C:\Users\mrblah\.netbeans\6.8\var\cache\executor-snippets\run.xml:45: Cancelled by user. BUILD FAILED (total time: 0 seconds) The row in the xml is: <translate-classpath classpath="${classpath}" targetProperty="classpath-translated" />

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• JAXB :Class cast exception while trying to unmarshall XML using JAXB

  - by Navin

  Hi I am novice to JAXB , i am trying to sample using JAXB. trying to dispaly the values in the MenuList.xml ----MenuList.xml----------- Projects Library Library1 ----------------------------MenuList.xsd------------------- The uisng the command I run the xsd file and it generated the classes. MenuList and Object Factory. AppTest.java package com.xx.menu; import java.io.File; import java.io.IOException; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBElement; import javax.xml.bind.JAXBException; import javax.xml.bind.UnmarshalException; import javax.xml.bind.Unmarshaller; public class TestNew { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub try { JAXBContext jc = JAXBContext.newInstance("com.xx.menu"); //Create unmarshaller Unmarshaller um = jc.createUnmarshaller(); File file = new File ("C:\\sample\\menulist.xml"); JAXBElement element = (JAXBElement)um.unmarshal(file); Menulist menulist= (Menulist) element.getValue (); System.out.println("name : "+menulist.getMenu()); } catch( UnmarshalException ue ) { ue.printStackTrace(); System.out.println( "Caught UnmarshalException" ); } catch( JAXBException je ) { je.printStackTrace(); } catch( Exception ioe ) { ioe.printStackTrace(); } } } Error: java.lang.ClassCastException: com.xx.menu.Menulist at com.xx.menu.TestNew.main(TestNew.java:26) Can you please help me where I am going wrong ...I will be greatly thankful to you. Thanks

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• replace double quotes to parse JSON in PHP

  - by hunt

  hi, i have following json format { "status": "ACTIVE", "result": false, "isworking": false, "margin": 1, "employee": { "111": { "val1": 5.7000000000000002, "val2": "9/2", "val3": 5.7000000000000002 }, "222": { "val1": 31.550000000000001, "val2": "29/1", "val3": 31.550000000000001 } } } how the problem is when i am trying to decode above json response in php using json_decode($res,true) { true param for associative array } i am getting following result as few fields like "result":false is not "result":"false" i.e. at many of the places doubles quotes are missing in values of json. see in val1 and val3 fields resultant data after decoding in php (associative array) Array ( [status] => > ACTIVE [result] => > [isworking] => > [margin] => > 1 [employee] => > Array ( [111] => > Array ( [val1] => > 5.7 [val2] => > 9/2 [val3] => > 5.7 ) [222] => > Array ( [val1] => > 31.55 [val2] => > 29/1 [val3] => > 31.55 ) ) ) please help me on how would i insert double quotes in values ? Thanks

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• Using jquery pagination plugin

  - by eddy

  Hi. I want to use this plugin, but I don't know if it'll meet all of my requirements. I know I have to use JSON to fetch the data from the server and then use it at the client side, is that right?. For now, that's fine, because I only have very few records, but when I have thousands of ; will it be convenient to bring all the data at once? What I would like to know is : Is there any way to query the database every time I press the number of an specific page? I ask this cause I don't think is a good idea to load all the data in one go, is it? I used to pass the id of the record I was going to edit like this : <td align="center"> <c:url value="edititem.htm" var="url"> <c:param name="id" value="${item.id}"/> </c:url> <a href="<c:out value="${url}"/>"><img src="images/edit.png" width="14" height="14" alt="edit"/></a> </td> but now I don't know not how to do it. I really hope you can help me out. Thanks in advance.

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• SQL Injection Protection for dynamic queries

  - by jbugeja

  The typical controls against SQL injection flaws are to use bind variables (cfqueryparam tag), validation of string data and to turn to stored procedures for the actual SQL layer. This is all fine and I agree, however what if the site is a legacy one and it features a lot of dynamic queries. Then, rewriting all the queries is a herculean task and it requires an extensive period of regression and performance testing. I was thinking of using a dynamic SQL filter and calling it prior to calling cfquery for the actual execution. I found one filter in CFLib.org (http://www.cflib.org/udf/sqlSafe): <cfscript> /** * Cleans string of potential sql injection. * * @param string String to modify. (Required) * @return Returns a string. * @author Bryan Murphy ([email protected]) * @version 1, May 26, 2005 */ function metaguardSQLSafe(string) { var sqlList = "-- ,'"; var replacementList = "#chr(38)##chr(35)##chr(52)##chr(53)##chr(59)##chr(38)##chr(35)##chr(52)##chr(53)##chr(59)# , #chr(38)##chr(35)##chr(51)##chr(57)##chr(59)#"; return trim(replaceList( string , sqlList , replacementList )); } </cfscript> This seems to be quite a simple filter and I would like to know if there are ways to improve it or to come up with a better solution?

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• Memory leak / GLib issue.

  - by Andrei Ciobanu

  1: /* 2: * File: xyn-playlist.c 3: * Author: Andrei Ciobanu 4: * 5: * Created on June 4, 2010, 12:47 PM 6: */ 7:   8: #include <dirent.h> 9: #include <glib.h> 10: #include <stdio.h> 11: #include <stdlib.h> 12: #include <sys/stat.h> 13: #include <unistd.h> 14:   15: /** 16: * Returns a list all the file(paths) from a directory. 17: * Returns 'NULL' if a certain error occurs. 18: * @param dir_path. 19: * @param A list of gchars* indicating what file patterns to detect. 20: */ 21: GSList *xyn_pl_get_files(const gchar *dir_path, GSList *file_patterns) { 22: /* Returning list containing file paths */ 23: GSList *fpaths = NULL; 24: /* Used to scan directories for subdirs. Acts like a 25: * stack, to avoid recursion. */ 26: GSList *dirs = NULL; 27: /* Current dir */ 28: DIR *cdir = NULL; 29: /* Current dir entries */ 30: struct dirent *cent = NULL; 31: /* File stats */ 32: struct stat cent_stat; 33: /* dir_path duplicate, on the heap */ 34: gchar *dir_pdup; 35:   36: if (dir_path == NULL) { 37: return NULL; 38: } 39:   40: dir_pdup = g_strdup((const gchar*) dir_path); 41: dirs = g_slist_append(dirs, (gpointer) dir_pdup); 42: while (dirs != NULL) { 43: cdir = opendir((const gchar*) dirs->data); 44: if (cdir == NULL) { 45: g_slist_free(dirs); 46: g_slist_free(fpaths); 47: return NULL; 48: } 49: chdir((const gchar*) dirs->data); 50: while ((cent = readdir(cdir)) != NULL) { 51: lstat(cent->d_name, &cent_stat); 52: if (S_ISDIR(cent_stat.st_mode)) { 53: if (g_strcmp0(cent->d_name, ".") == 0 || 54: g_strcmp0(cent->d_name, "..") == 0) { 55: /* Skip "." and ".." dirs */ 56: continue; 57: } 58: dirs = g_slist_append(dirs, 59: g_strconcat((gchar*) dirs->data, "/", cent->d_name, NULL)); 60: } else { 61: fpaths = g_slist_append(fpaths, 62: g_strconcat((gchar*) dirs->data, "/", cent->d_name, NULL)); 63: } 64: } 65: g_free(dirs->data); 66: dirs = g_slist_delete_link(dirs, dirs); 67: closedir(cdir); 68: } 69: return fpaths; 70: } 71:   72: int main(int argc, char** argv) { 73: GSList *l = NULL; 74: l = xyn_pl_get_files("/home/andrei/Music", NULL); 75: g_slist_foreach(l,(GFunc)printf,NULL); 76: printf("%d\n",g_slist_length(l)); 77: g_slist_free(l); 78: return (0); 79: } 80:   81:   82: -----------------------------------------------------------------------------------------------==15429== 83: ==15429== HEAP SUMMARY: 84: ==15429== in use at exit: 751,451 bytes in 7,263 blocks 85: ==15429== total heap usage: 8,611 allocs, 1,348 frees, 22,898,217 bytes allocated 86: ==15429== 87: ==15429== 120 bytes in 1 blocks are possibly lost in loss record 1 of 11 88: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 89: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 90: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 91: ==15429== by 0x40971F6: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 92: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 93: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 94: ==15429== by 0x8048848: main (main.c:18) 95: ==15429== 96: ==15429== 129 bytes in 1 blocks are possibly lost in loss record 2 of 11 97: ==15429== at 0x4024F20: malloc (vg_replace_malloc.c:236) 98: ==15429== by 0x4081243: g_malloc (in /lib/libglib-2.0.so.0.2400.1) 99: ==15429== by 0x409B85B: g_strconcat (in /lib/libglib-2.0.so.0.2400.1) 100: ==15429== by 0x80489FE: xyn_pl_get_files (xyn-playlist.c:62) 101: ==15429== by 0x8048848: main (main.c:18) 102: ==15429== 103: ==15429== 360 bytes in 3 blocks are possibly lost in loss record 3 of 11 104: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 105: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 106: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 107: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 108: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 109: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 110: ==15429== by 0x8048848: main (main.c:18) 111: ==15429== 112: ==15429== 508 bytes in 1 blocks are still reachable in loss record 4 of 11 113: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 114: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 115: ==15429== by 0x409624D: ??? (in /lib/libglib-2.0.so.0.2400.1) 116: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 117: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 118: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 119: ==15429== by 0x8048848: main (main.c:18) 120: ==15429== 121: ==15429== 508 bytes in 1 blocks are still reachable in loss record 5 of 11 122: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 123: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 124: ==15429== by 0x409626F: ??? (in /lib/libglib-2.0.so.0.2400.1) 125: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 126: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 127: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 128: ==15429== by 0x8048848: main (main.c:18) 129: ==15429== 130: ==15429== 508 bytes in 1 blocks are still reachable in loss record 6 of 11 131: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 132: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 133: ==15429== by 0x4096291: ??? (in /lib/libglib-2.0.so.0.2400.1) 134: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 135: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 136: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 137: ==15429== by 0x8048848: main (main.c:18) 138: ==15429== 139: ==15429== 1,200 bytes in 10 blocks are possibly lost in loss record 7 of 11 140: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 141: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 142: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 143: ==15429== by 0x40971F6: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 144: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 145: ==15429== by 0x8048A0D: xyn_pl_get_files (xyn-playlist.c:61) 146: ==15429== by 0x8048848: main (main.c:18) 147: ==15429== 148: ==15429== 2,040 bytes in 1 blocks are still reachable in loss record 8 of 11 149: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 150: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 151: ==15429== by 0x40970AB: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 152: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 153: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 154: ==15429== by 0x8048848: main (main.c:18) 155: ==15429== 156: ==15429== 4,320 bytes in 36 blocks are possibly lost in loss record 9 of 11 157: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 158: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 159: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 160: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 161: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 162: ==15429== by 0x80489D2: xyn_pl_get_files (xyn-playlist.c:58) 163: ==15429== by 0x8048848: main (main.c:18) 164: ==15429== 165: ==15429== 56,640 bytes in 472 blocks are possibly lost in loss record 10 of 11 166: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 167: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 168: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 169: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 170: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 171: ==15429== by 0x8048A0D: xyn_pl_get_files (xyn-playlist.c:61) 172: ==15429== by 0x8048848: main (main.c:18) 173: ==15429== 174: ==15429== 685,118 bytes in 6,736 blocks are definitely lost in loss record 11 of 11 175: ==15429== at 0x4024F20: malloc (vg_replace_malloc.c:236) 176: ==15429== by 0x4081243: g_malloc (in /lib/libglib-2.0.so.0.2400.1) 177: ==15429== by 0x409B85B: g_strconcat (in /lib/libglib-2.0.so.0.2400.1) 178: ==15429== by 0x80489FE: xyn_pl_get_files (xyn-playlist.c:62) 179: ==15429== by 0x8048848: main (main.c:18) 180: ==15429== 181: ==15429== LEAK SUMMARY: 182: ==15429== definitely lost: 685,118 bytes in 6,736 blocks 183: ==15429== indirectly lost: 0 bytes in 0 blocks 184: ==15429== possibly lost: 62,769 bytes in 523 blocks 185: ==15429== still reachable: 3,564 bytes in 4 blocks 186: ==15429== suppressed: 0 bytes in 0 blocks 187: ==15429== 188: ==15429== For counts of detected and suppressed errors, rerun with: -v 189: ==15429== ERROR SUMMARY: 7 errors from 7 contexts (suppressed: 17 from 8) 190: ---------------------------------------------------------------------------------------------- I am using the above code in order to create a list with all the filepaths in a certain directory. (In my case fts.h or ftw.h are not an option). I am using GLib as the data structures library. Still I have my doubts in regarding the way GLib is allocating, de-allocating memory ? When invoking g_slist_free(list) i also free the data contained by the elements ? Why all those memory leaks appear ? Is valgrind a suitable tool for profilinf memory issues when using a complex library like GLib ? LATER EDIT: If I g_slist_foreach(l,(GFunc)g_free,NULL);, the valgrind report is different, (All the memory leaks from 'definitely lost' will move to 'indirectly lost'). Still I don't see the point ? Aren't GLib collections implement a way to be freed ?

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• Flex, Ant, mxmlc and conditional compilation

  - by Rezmason

  My ActionScript project builds with several compile-time specified constants. They are all Booleans, and only one of them is true at any given time. The rest must be false. When I represented my build process in a bash script, I could loop through the names of all these constants, set one of them to be true and the rest to be false, then concatenate them onto a string to be inserted as a set of arguments passed to mxmlc. In Ant, looping is more complicated. I've tried the ant-contrib for tag: <mxmlc file='blah' output='blah'> <!- ... -> <for list='${commaSeparatedListOfConstNames}' param='constName'> <sequential> <define> <name>${constName}</name> <value>${constName} == ${theTrueConst}</value> <!-- (mxmlc's define arguments can be strings that are evaluated at compile time) --> </define> </sequential> </for> </mxmlc> Long story short, ant-contrib tags like the for tag can't go in the mxmlc task. So now I'm using Ant's propertyregex to take my list of arguments and format them into a set of define args, like my old bash script: <propertyregex property='defLine.first' override='false' input='${commaSeparatedListOfConstNames}' regexp='([^\|]+)\,' replace='\1,false ' /> <propertyregex property='defLine.final' input='${defLine.first}' regexp='(@{theTrueConst}\,)false' replace='\1true' /> <!-- result: -define+=CONST_ONE,false -define+=CONST_TWO,false -define+=TRUE_CONST,true --> Now my problem is, what can I do with this mxmlc argument and the mxmlc task? Apparently arg tags can go inside the mxmlc task without it throwing an error, but they don't seem to have any effect. What am I supposed to do? How do I make this work with the mxmlc task?

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• SMO restore of SQL database doesn't overwrite

  - by Tom H.

  I'm trying to restore a database from a backup file using SMO. If the database does not already exist then it works fine. However, if the database already exists then I get no errors, but the database is not overwritten. The "restore" process still takes just as long, so it looks like it's working and doing a restore, but in the end the database has not changed. I'm doing this in Powershell using SMO. The code is a bit long, but I've included it below. You'll notice that I do set $restore.ReplaceDatabase = $true. Also, I use a try-catch block and report on any errors (I hope), but none are returned. Any obvious mistakes? Is it possible that I'm not reporting some error and it's being hidden from me? Thanks for any help or advice that you can give! function Invoke-SqlRestore { param( [string]$backup_file_name, [string]$server_name, [string]$database_name, [switch]$norecovery=$false ) # Get a new connection to the server [Microsoft.SqlServer.Management.Smo.Server]$server = New-SMOconnection -server_name $server_name Write-Host "Starting restore to $database_name on $server_name." Try { $backup_device = New-Object("Microsoft.SqlServer.Management.Smo.BackupDeviceItem") ($backup_file_name, "File") # Get local paths to the Database and Log file locations If ($server.Settings.DefaultFile.Length -eq 0) {$database_path = $server.Information.MasterDBPath } Else { $database_path = $server.Settings.DefaultFile} If ($server.Settings.DefaultLog.Length -eq 0 ) {$database_log_path = $server.Information.MasterDBLogPath } Else { $database_log_path = $server.Settings.DefaultLog} # Load up the Restore object settings $restore = New-Object Microsoft.SqlServer.Management.Smo.Restore $restore.Action = 'Database' $restore.Database = $database_name $restore.ReplaceDatabase = $true if ($norecovery.IsPresent) { $restore.NoRecovery = $true } Else { $restore.Norecovery = $false } $restore.Devices.Add($backup_device) # Get information from the backup file $restore_details = $restore.ReadBackupHeader($server) $data_files = $restore.ReadFileList($server) # Restore all backup files ForEach ($data_row in $data_files) { $logical_name = $data_row.LogicalName $physical_name = Get-FileName -path $data_row.PhysicalName $restore_data = New-Object("Microsoft.SqlServer.Management.Smo.RelocateFile") $restore_data.LogicalFileName = $logical_name if ($data_row.Type -eq "D") { # Restore Data file $restore_data.PhysicalFileName = $database_path + "\" + $physical_name } Else { # Restore Log file $restore_data.PhysicalFileName = $database_log_path + "\" + $physical_name } [Void]$restore.RelocateFiles.Add($restore_data) } $restore.SqlRestore($server) # If there are two files, assume the next is a Log if ($restore_details.Rows.Count -gt 1) { $restore.Action = [Microsoft.SqlServer.Management.Smo.RestoreActionType]::Log $restore.FileNumber = 2 $restore.SqlRestore($server) } } Catch { $ex = $_.Exception Write-Output $ex.message $ex = $ex.InnerException while ($ex.InnerException) { Write-Output $ex.InnerException.message $ex = $ex.InnerException } Throw $ex } Finally { $server.ConnectionContext.Disconnect() } Write-Host "Restore ended without any errors." }

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• Create Zip File In Windows and Extract Zip File In Linux

  - by Yan Cheng CHEOK

  I had created a zip file (together with directory) under Windows as follow : package sandbox; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; /** * * @author yan-cheng.cheok */ public class Main { /** * @param args the command line arguments */ public static void main(String[] args) { // These are the files to include in the ZIP file String[] filenames = new String[]{"MyDirectory" + File.separator + "MyFile.txt"}; // Create a buffer for reading the files byte[] buf = new byte[1024]; try { // Create the ZIP file String outFilename = "outfile.zip"; ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outFilename)); // Compress the files for (int i=0; i<filenames.length; i++) { FileInputStream in = new FileInputStream(filenames[i]); // Add ZIP entry to output stream. out.putNextEntry(new ZipEntry(filenames[i])); // Transfer bytes from the file to the ZIP file int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } // Complete the entry out.closeEntry(); in.close(); } // Complete the ZIP file out.close(); } catch (IOException e) { e.printStackTrace(); } } } The newly created zip file can be extracted without problem under Windows, by using http://www.exampledepot.com/egs/java.util.zip/GetZip.html However, I realize if I extract the newly created zip file under Linux, using http://www.exampledepot.com/egs/java.util.zip/GetZip.html, I will get a file named "MyDirectory\MyFile.txt" instead of MyFile.txt being placed under folder MyDirectory. I try to solve the problem by changing the zip file creation code to String[] filenames = new String[]{"MyDirectory" + "/" + "MyFile.txt"}; But, is this an eligible solution, by hard-coded the seperator? Will it work under Mac OS? (I do not have a Mac to try out)

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• Java RMI AccessControlException: access denied

  - by Gwilym

  Hey im getting a AccessControlException: access denied when attempting to start up a RMI app im writing, I cant work out why I get this exception if I open it on the default port 1099, or on another dynamic port, my policy file currently grants everything (will change when app is finished). I am stuck as to where It is going wrong, any help would but of great use My code public class Main { /** * @param args the command line arguments */ public static void main(String[] args) throws RemoteException, AlreadyBoundException, MalformedURLException { if (System.getSecurityManager() == null) { System.setSecurityManager ( new RMISecurityManager() ); } CreditCardServer ccs = new CreditCardServer(); int port = 1099; try { port = Integer.valueOf(args[0]); } catch (Exception e) { System.out.println("Invlaid Port"); } if (((port <= 65535) && (port >= 49152)) || port ==1099) { System.out.println("Valid Port"); } else { port = 1099; System.out.println("Port not in Dynamic Range 49152<-->65535"); } System.out.println(port); LocateRegistry.createRegistry(port); LocateRegistry.getRegistry().bind("CreditCardServer", ccs); while (true) { //hum? } } } The Stack Trace vega3 [ia32.linux] 23% java -Djava.security.policy=wideopen.policy -jar "BookStore-CreditCardServer.jar 65000" Valid Port 65000 Exception in thread "main" java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:342) at java.security.AccessController.checkPermission(AccessController.java:553) at java.lang.SecurityManager.checkPermission(SecurityManager.java:549) at java.lang.SecurityManager.checkConnect(SecurityManager.java:1051) at java.net.Socket.connect(Socket.java:536) at java.net.Socket.connect(Socket.java:492) at java.net.Socket.<init>(Socket.java:389) at java.net.Socket.<init>(Socket.java:203) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:340) at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source) at bookstorecreditcardserver.Main.main(Main.java:56) My Policy File grant { // Allow everything for now permission java.security.AllPermission; };

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• What is causing this OverflowError in Django?

  - by orokusaki

  I'm using a normal ModelForm.save() to create an object, and this exception comes up. It worked fine before until I added commit_manually, transaction.rollback() and transaction.commit() to my view. Has anyone else ran into this? Is this because of sqlite3? OverflowError: long too big to convert C:\Python26\Lib\site-packages\django-trunk\django\db\backends\sqlite3\base.py in execute, line 197 params: (203866156270872165269663274649746494334L,) query: u'SELECT (1) AS "a", "auth_user"."id", "auth_user"."username", "auth_user"."first_name", "auth_user"."last_name", "auth_user"."email", "auth_user"."password", "auth_user"."is_staff", "auth_user"."is_active", "auth_user"."is_superuser", "auth_user"."last_login", "auth_user"."date_joined" FROM "auth_user" WHERE "auth_user"."id" = ? LIMIT 1' self <django.db.backends.sqlite3.base.SQLiteCursorWrapper object at 0x015D5A98> Why would that L param be passed in, and

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• Java performance problem with LinkedBlockingQueue

  - by lofthouses

  Hello, this is my first post on stackoverflow...i hope someone can help me i have a big performance regression with Java 6 LinkedBlockingQueue. In the first thread i generate some objects which i push in to the queue In the second thread i pull these objects out. The performance regression occurs when the take() method of the LinkedBlockingQueue is called frequently. I monitored the whole program and the take() method claimed the most time overall. And the throughput goes from ~58Mb/s to 0.9Mb/s... the queue pop and take methods ar called with a static method from this class public class C_myMessageQueue { private static final LinkedBlockingQueue<C_myMessageObject> x_queue = new LinkedBlockingQueue<C_myMessageObject>( 50000 ); /** * @param message * @throws InterruptedException * @throws NullPointerException */ public static void addMyMessage( C_myMessageObject message ) throws InterruptedException, NullPointerException { x_queue.put( message ); } /** * @return Die erste message der MesseageQueue * @throws InterruptedException */ public static C_myMessageObject getMyMessage() throws InterruptedException { return x_queue.take(); } } how can i tune the take() method to accomplish at least 25Mb/s, or is there a other class i can use which will block when the "queue" is full or empty. kind regards Bart P.S.: sorry for my bad english, i'm from germany ;)

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• pyqt QObject: Cannot create children for a parent that is in a different thread

  - by memomk

  QObject: Cannot create children for a parent that is in a different thread. (Parent is QTextDocument(0x9919018), parent's thread is QThread(0x97331e0), current thread is flooderthread(0x97b4c10) error means ? am sorry because am new to pyqt here is the code : i know the code is finished yet but it should work i guess the problem is with myfun.log function... #! /usr/bin/python # -*- coding: utf-8 -*- import urllib, urllib2, itertools, threading, cookielib, Cookie, sys, time, hashlib, os from PyQt4 import QtCore, QtGui try: _fromUtf8 = QtCore.QString.fromUtf8 except AttributeError: _fromUtf8 = lambda s: s gui=QtGui.QApplication.processEvents texttoset="" class fun(): global texttoset def checkpassword(self): if ui.passwordcheck.isChecked()==True: return 1 else : return 0 def log(self, text): if text != False: firsttext=str(ui.console.toPlainText()) secondtext=firsttext+text+"\n" ui.console.setText(secondtext) log=open("log.log", "a") log.write(text+"\n") log.close() else : firsttext=str(ui.console.toPlainText()) secondtext=firsttext+texttoset+"\n" ui.console.setText(secondtext) log=open("log.log", "a") log.write(texttoset+"\n") log.close() def disable(self): MainWindow.setEnabled(False) pass def enable(self): MainWindow.setEnabled(True) pass def checkmethod(self): if ui.get.isChecked()==True: return 1 elif ui.post.isChecked()==True: return 2 else : return 0 def main(self): connecter() gui() f1.start() gui() time.sleep(3) gui() f2.start() gui() time.sleep(3) gui() f3.start() gui() time.sleep(3) gui() f4.start() gui() time.sleep(3) gui() f5.start() gui() self.sleep(3) gui() f6.start() gui() def killer(self): f1.terminate() f2.terminate() f3.terminate() f4.terminate() f5.terminate() f6.terminate() def close(self): self.killer() os.abort() sys.exit() myfun=fun() def connecter(): QtCore.QObject.connect(f1, QtCore.SIGNAL("log(bool)"), myfun.log) QtCore.QObject.connect(f1, QtCore.SIGNAL("enable()"), myfun.enable) QtCore.QObject.connect(f1, QtCore.SIGNAL("disable()"), myfun.disable) QtCore.QObject.connect(f2, QtCore.SIGNAL("log(bool)"), myfun.log) QtCore.QObject.connect(f2, QtCore.SIGNAL("enable()"), myfun.enable) QtCore.QObject.connect(f2, QtCore.SIGNAL("disable()"), myfun.disable) QtCore.QObject.connect(f3, QtCore.SIGNAL("log(bool)"), myfun.log) QtCore.QObject.connect(f3, QtCore.SIGNAL("enable()"), myfun.enable) QtCore.QObject.connect(f3, QtCore.SIGNAL("disable()"), myfun.disable) QtCore.QObject.connect(f4, QtCore.SIGNAL("log(bool)"), myfun.log) QtCore.QObject.connect(f4, QtCore.SIGNAL("enable()"), myfun.enable) QtCore.QObject.connect(f4, QtCore.SIGNAL("disable()"), myfun.disable) QtCore.QObject.connect(f5, QtCore.SIGNAL("log(bool)"), myfun.log) QtCore.QObject.connect(f5, QtCore.SIGNAL("enable()"), myfun.enable) QtCore.QObject.connect(f5, QtCore.SIGNAL("disable()"), myfun.disable) QtCore.QObject.connect(f6, QtCore.SIGNAL("log(bool)"), myfun.log) QtCore.QObject.connect(f6, QtCore.SIGNAL("enable()"), myfun.enable) QtCore.QObject.connect(f6, QtCore.SIGNAL("disable()"), myfun.disable) x=0 num=0 class flooderthread(QtCore.QThread): global texttoset def __init__(self, x, num): QtCore.QThread.__init__(self) self.x=x self.num=num def log(self, text): texttolog=str(text) time.sleep(1) self.emit(QtCore.SIGNAL("log(bool)"), False) time.sleep(2) def enable(self): time.sleep(1) self.emit(QtCore.SIGNAL("enable()")) def disable(self): time.sleep(1) self.emit(QtCore.SIGNAL("disable()")) def run(self): connecter() self.log("\n\n--------------------------------------------------new session-------------------------------------\n\n") itered=False gui() self.disable() gui() self.log("setting params...") param={ui.dataname1.text():ui.datavalue1.text(),ui.dataname3.text():ui.datavalue3.text(),ui.dataname3.text():ui.datavalue3.text(), } self.log("checking password...") if myfun.checkpassword()==1: itered=True self.log("password is true") else : self.log("password is null ") self.log("itered operation") self.log("setting url") url=str(ui.url.text()) if url[:4]!="http" and url[:3]!="ftp": self.log("url error exiting the whole function") self.log("please set a valide protocole!!") gui() self.enable() gui() return 1 pass else : self.log("valid url") gui() self.log("url is "+url) self.log("setting proxy") proxy="http://"+ui.proxyuser.text()+":"+ui.proxypass.text()+"@"+ui.proxyhost.text()+":"+ui.proxyport.text() self.log("proxy is "+proxy) gui() self.log("preparing params...") urlparam=urllib.urlencode(param) gui() self.log("params are "+urlparam) self.log("setting up headers...") header={'User-Agent':str(ui.useragent.toPlainText())} self.log("headers are "+ str(header)) self.log("setting up proxy handler..") proxyhandler=urllib2.ProxyHandler({"http":str(proxy)}) self.log("checking method") if myfun.checkmethod()==1: self.log("method is get..") self.log("setting request..") finalurl=url+urlparam gui() self.log("final url is"+finalurl) req=urllib2.Request(finalurl, None, headers) elif myfun.checkmethod()==2: self.log("method is post...") self.log("setting request..") finalurl=url gui() self.log("final url is "+finalurl) req=urllib2.Request(finalurl, urlparam, header) else : self.log("error has been accourded") self.log("please select a method!!") gui() self.log("exiting the whole functions") gui() self.enable() return 1 pass self.log("intilizing cookies..") c1=Cookie.SimpleCookie() c1[str(ui.cookiename1.text())]=str(ui.cookievalue1.text()) c1[str(ui.cookiename1.text())]['path']='/' c1[str(ui.cookiename2.text())]=str(ui.cookievalue2.text()) c1[str(ui.cookiename2.text())]['path']='/' c1[str(ui.cookiename3.text())]=str(ui.cookievalue3.text()) c1[str(ui.cookiename3.text())]['domain']=url c1[str(ui.cookiename3.text())]['path']='/' c1[str(ui.cookiename4.text())]=str(ui.cookievalue4.text()) c1[str(ui.cookiename4.text())]['domain']=url c1[str(ui.cookiename4.text())]['path']='/' self.log("cookies are.. :"+str(c1)) cj=cookielib.CookieJar() cj.set_cookie(c1) opener = urllib2.build_opener(proxyhandler, urllib2.HTTPCookieProcessor(cj)) self.log("insatlling opener") urllib2.install_opener(opener) self.log("setting the two operations....") if itered==Fasle: self.log("starting the flooding loop") gui() while true: try: gui() opener.open(req) except e: self.log("error connecting : "+e.reason) self.log("will continue....") continue gui() elif itered==True: pass f1=flooderthread(1, 1) f2=flooderthread(2, 2) f3=flooderthread(3, 3) f4=flooderthread(4, 4) f5=flooderthread(5, 5) f6=flooderthread(6, 6) class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName(_fromUtf8("MainWindow")) MainWindow.setMinimumSize(QtCore.QSize(838, 500)) MainWindow.setMaximumSize(QtCore.QSize(838, 500)) MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "memo flooder", None, QtGui.QApplication.UnicodeUTF8)) self.centralwidget = QtGui.QWidget(MainWindow) self.centralwidget.setObjectName(_fromUtf8("centralwidget")) self.console=QtGui.QTextEdit(self.centralwidget) self.console.setGeometry(10, 350, 800,130) self.console.setReadOnly(True) self.console.setObjectName("console") self.groupBox = QtGui.QGroupBox(self.centralwidget) self.groupBox.setGeometry(QtCore.QRect(30, 50, 71, 80)) self.groupBox.setTitle(QtGui.QApplication.translate("MainWindow", "method:", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox.setObjectName(_fromUtf8("groupBox")) self.post = QtGui.QRadioButton(self.groupBox) self.post.setGeometry(QtCore.QRect(10, 20, 61, 22)) self.post.setText(QtGui.QApplication.translate("MainWindow", "post", None, QtGui.QApplication.UnicodeUTF8)) self.post.setChecked(True) self.post.setObjectName(_fromUtf8("post")) self.get = QtGui.QRadioButton(self.groupBox) self.get.setGeometry(QtCore.QRect(10, 50, 51, 22)) self.get.setText(QtGui.QApplication.translate("MainWindow", "get", None, QtGui.QApplication.UnicodeUTF8)) self.get.setObjectName(_fromUtf8("get")) self.url = QtGui.QLineEdit(self.centralwidget) self.url.setGeometry(QtCore.QRect(70, 20, 671, 27)) self.url.setInputMethodHints(QtCore.Qt.ImhUrlCharactersOnly) self.url.setObjectName(_fromUtf8("url")) self.groupBox_2 = QtGui.QGroupBox(self.centralwidget) self.groupBox_2.setGeometry(QtCore.QRect(110, 50, 371, 111)) self.groupBox_2.setTitle(QtGui.QApplication.translate("MainWindow", "data:", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox_2.setObjectName(_fromUtf8("groupBox_2")) self.dataname1 = QtGui.QLineEdit(self.groupBox_2) self.dataname1.setGeometry(QtCore.QRect(20, 30, 101, 27)) self.dataname1.setObjectName(_fromUtf8("dataname1")) self.label = QtGui.QLabel(self.groupBox_2) self.label.setGeometry(QtCore.QRect(40, 10, 67, 17)) self.label.setText(QtGui.QApplication.translate("MainWindow", "name:", None, QtGui.QApplication.UnicodeUTF8)) self.label.setObjectName(_fromUtf8("label")) self.dataname2 = QtGui.QLineEdit(self.groupBox_2) self.dataname2.setGeometry(QtCore.QRect(130, 30, 113, 27)) self.dataname2.setObjectName(_fromUtf8("dataname2")) self.dataname3 = QtGui.QLineEdit(self.groupBox_2) self.dataname3.setGeometry(QtCore.QRect(250, 30, 113, 27)) self.dataname3.setObjectName(_fromUtf8("dataname3")) self.label_2 = QtGui.QLabel(self.groupBox_2) self.label_2.setGeometry(QtCore.QRect(40, 60, 67, 17)) self.label_2.setText(QtGui.QApplication.translate("MainWindow", "value:", None, QtGui.QApplication.UnicodeUTF8)) self.label_2.setObjectName(_fromUtf8("label_2")) self.datavalue1 = QtGui.QLineEdit(self.groupBox_2) self.datavalue1.setGeometry(QtCore.QRect(20, 80, 101, 27)) self.datavalue1.setObjectName(_fromUtf8("datavalue1")) self.datavalue2 = QtGui.QLineEdit(self.groupBox_2) self.datavalue2.setGeometry(QtCore.QRect(130, 80, 113, 27)) self.datavalue2.setObjectName(_fromUtf8("datavalue2")) self.datavalue3 = QtGui.QLineEdit(self.groupBox_2) self.datavalue3.setGeometry(QtCore.QRect(250, 80, 113, 27)) self.datavalue3.setObjectName(_fromUtf8("datavalue3")) self.groupBox_4 = QtGui.QGroupBox(self.centralwidget) self.groupBox_4.setGeometry(QtCore.QRect(670, 50, 151, 111)) self.groupBox_4.setTitle(QtGui.QApplication.translate("MainWindow", "password:", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox_4.setObjectName(_fromUtf8("groupBox_4")) self.passname = QtGui.QLineEdit(self.groupBox_4) self.passname.setGeometry(QtCore.QRect(10, 30, 113, 27)) self.passname.setObjectName(_fromUtf8("passname")) self.passvalue = QtGui.QLineEdit(self.groupBox_4) self.passvalue.setGeometry(QtCore.QRect(10, 80, 113, 27)) self.passvalue.setObjectName(_fromUtf8("passvalue")) self.passwordcheck = QtGui.QCheckBox(self.centralwidget) self.passwordcheck.setGeometry(QtCore.QRect(670, 180, 97, 22)) self.passwordcheck.setText(QtGui.QApplication.translate("MainWindow", "password", None, QtGui.QApplication.UnicodeUTF8)) self.passwordcheck.setChecked(True) self.passwordcheck.setObjectName(_fromUtf8("passwordcheck")) self.groupBox_5 = QtGui.QGroupBox(self.centralwidget) self.groupBox_5.setGeometry(QtCore.QRect(29, 169, 441, 81)) self.groupBox_5.setTitle(QtGui.QApplication.translate("MainWindow", "proxy:", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox_5.setObjectName(_fromUtf8("groupBox_5")) self.proxyhost = QtGui.QLineEdit(self.groupBox_5) self.proxyhost.setGeometry(QtCore.QRect(20, 30, 113, 27)) self.proxyhost.setObjectName(_fromUtf8("proxyhost")) self.proxyport = QtGui.QLineEdit(self.groupBox_5) self.proxyport.setGeometry(QtCore.QRect(140, 30, 51, 27)) self.proxyport.setInputMethodHints(QtCore.Qt.ImhDigitsOnly|QtCore.Qt.ImhPreferNumbers) self.proxyport.setObjectName(_fromUtf8("proxyport")) self.proxyuser = QtGui.QLineEdit(self.groupBox_5) self.proxyuser.setGeometry(QtCore.QRect(200, 30, 113, 27)) self.proxyuser.setObjectName(_fromUtf8("proxyuser")) self.proxypass = QtGui.QLineEdit(self.groupBox_5) self.proxypass.setGeometry(QtCore.QRect(320, 30, 113, 27)) self.proxypass.setObjectName(_fromUtf8("proxypass")) self.label_4 = QtGui.QLabel(self.groupBox_5) self.label_4.setGeometry(QtCore.QRect(100, 10, 67, 17)) self.label_4.setText(QtGui.QApplication.translate("MainWindow", "host", None, QtGui.QApplication.UnicodeUTF8)) self.label_4.setObjectName(_fromUtf8("label_4")) self.label_5 = QtGui.QLabel(self.groupBox_5) self.label_5.setGeometry(QtCore.QRect(150, 10, 67, 17)) self.label_5.setText(QtGui.QApplication.translate("MainWindow", "port", None, QtGui.QApplication.UnicodeUTF8)) self.label_5.setObjectName(_fromUtf8("label_5")) self.label_6 = QtGui.QLabel(self.groupBox_5) self.label_6.setGeometry(QtCore.QRect(200, 10, 67, 17)) self.label_6.setText(QtGui.QApplication.translate("MainWindow", "username", None, QtGui.QApplication.UnicodeUTF8)) self.label_6.setObjectName(_fromUtf8("label_6")) self.label_7 = QtGui.QLabel(self.groupBox_5) self.label_7.setGeometry(QtCore.QRect(320, 10, 67, 17)) self.label_7.setText(QtGui.QApplication.translate("MainWindow", "password", None, QtGui.QApplication.UnicodeUTF8)) self.label_7.setObjectName(_fromUtf8("label_7")) self.groupBox_6 = QtGui.QGroupBox(self.centralwidget) self.groupBox_6.setGeometry(QtCore.QRect(30, 260, 531, 91)) self.groupBox_6.setTitle(QtGui.QApplication.translate("MainWindow", "cookies:", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox_6.setObjectName(_fromUtf8("groupBox_6")) self.cookiename1 = QtGui.QLineEdit(self.groupBox_6) self.cookiename1.setGeometry(QtCore.QRect(10, 20, 113, 27)) self.cookiename1.setObjectName(_fromUtf8("cookiename1")) self.cookiename2 = QtGui.QLineEdit(self.groupBox_6) self.cookiename2.setGeometry(QtCore.QRect(140, 20, 113, 27)) self.cookiename2.setObjectName(_fromUtf8("cookename2")) self.cookiename3 = QtGui.QLineEdit(self.groupBox_6) self.cookiename3.setGeometry(QtCore.QRect(270, 20, 113, 27)) self.cookiename3.setObjectName(_fromUtf8("cookiename3")) self.cookiename4 = QtGui.QLineEdit(self.groupBox_6) self.cookiename4.setGeometry(QtCore.QRect(390, 20, 113, 27)) self.cookiename4.setObjectName(_fromUtf8("cookiename4")) self.cookievalue1 = QtGui.QLineEdit(self.groupBox_6) self.cookievalue1.setGeometry(QtCore.QRect(10, 50, 113, 27)) self.cookievalue1.setObjectName(_fromUtf8("cookievalue1")) self.cookievalue2 = QtGui.QLineEdit(self.groupBox_6) self.cookievalue2.setGeometry(QtCore.QRect(140, 50, 113, 27)) self.cookievalue2.setObjectName(_fromUtf8("cookievalue2")) self.cookievalue3 = QtGui.QLineEdit(self.groupBox_6) self.cookievalue3.setGeometry(QtCore.QRect(270, 50, 113, 27)) self.cookievalue3.setObjectName(_fromUtf8("cookievalue3")) self.cookievalue4 = QtGui.QLineEdit(self.groupBox_6) self.cookievalue4.setGeometry(QtCore.QRect(390, 50, 113, 27)) self.cookievalue4.setObjectName(_fromUtf8("cookievalue4")) self.groupBox_7 = QtGui.QGroupBox(self.centralwidget) self.groupBox_7.setGeometry(QtCore.QRect(570, 260, 251, 80)) self.groupBox_7.setTitle(QtGui.QApplication.translate("MainWindow", "useragents:", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox_7.setObjectName(_fromUtf8("groupBox_7")) self.useragent = QtGui.QTextEdit(self.groupBox_7) self.useragent.setGeometry(QtCore.QRect(10, 20, 211, 51)) self.useragent.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) self.useragent.setObjectName(_fromUtf8("useragent")) self.start = QtGui.QPushButton(self.centralwidget) self.start.setGeometry(QtCore.QRect(750, 20, 71, 27)) self.start.setText(QtGui.QApplication.translate("MainWindow", "start", None, QtGui.QApplication.UnicodeUTF8)) self.start.setObjectName(_fromUtf8("start")) self.label_3 = QtGui.QLabel(self.centralwidget) self.label_3.setGeometry(QtCore.QRect(30, 20, 67, 17)) self.label_3.setText(QtGui.QApplication.translate("MainWindow", "url :", None, QtGui.QApplication.UnicodeUTF8)) self.label_3.setObjectName(_fromUtf8("label_3")) MainWindow.setCentralWidget(self.centralwidget) QtCore.QObject.connect(self.start, QtCore.SIGNAL(_fromUtf8("clicked(bool)")), myfun.main) QtCore.QObject.connect(self.passwordcheck, QtCore.SIGNAL(_fromUtf8("clicked(bool)")), self.groupBox_4.setEnabled) QtCore.QMetaObject.connectSlotsByName(MainWindow) def __del__(): myfun.killer() os.abort() sys.exit() app = QtGui.QApplication(sys.argv) MainWindow = QtGui.QMainWindow() ui = Ui_MainWindow() ui.setupUi(MainWindow) myfun.log("\n\n--------------------------------------------------new session-------------------------------------\n\n") MainWindow.show() sys.exit(app.exec_())

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• events not firing in VisualForce

  - by Ben

  In the page below,Topic__c is a single-select picklist. My intention is to have this list control which of the input fields is available below. The user selects an option, and the onchange event should fire, and rerender the fields. <apex:inputField value="{!Call_Report__c.Topic__c}" id="topic" > <apex:actionSupport event="onchange" reRender="tickerInput,sectorInput,bondInput"> <apex:param name="topicSelection" value="{!Call_Report__c.Topic__c}" /> </apex:actionSupport> </apex:inputField> <apex:inputField value="{!Call_Report__c.Tickers__c}" rendered="{!Call_Report__c.Topic__c='Issuer'}" id="tickerInput" /> <apex:inputField value="{!Call_Report__c.Sector__c}" rendered="{!Call_Report__c.Topic__c='Industry'}" id="sectorInput"/> <apex:inputField value="{!Call_Report__c.Security__c}" rendered="{!Call_Report__c.Topic__c='Specific Bond'}" id="bondInput" /> Am I doing something obviously wrong here? http://community.salesforce.com/t5/Visualforce-Development/Multi-select-picklist-not-firing-event-for-AJAX-refreshes/m-p/173572/highlight/false#M22119 seems to imply that what I am doing is reasonable...

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