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• as3 - controlling flicker when scaling up a button or movieclip

  - by sol

  This is a situation I run into a lot but never seem to find a good solution. I have movieclips that I scale up slightly on rollover, but if you hover over the edge of the movieclip it just sits there and flickers, continuously receiving mouseOver and mouseOut events. How do you deal with this? Again, it's usually a problem when tweening the scale of a movieclip or button. my_mc.addEventListener(MouseEvent.MOUSE_OVER, mOver); my_mc.addEventListener(MouseEvent.MOUSE_OUT, mOut); private function mOver(m:MouseEvent) { TweenLite.to(m.target, .2, { scaleX:1.1, scaleY:1.1} ); } private function mOut(m:MouseEvent) { TweenLite.to(m.target, .2, { scaleX:1, scaleY:1} ); }

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• A quick design question about C++ container classes in shared memory

  - by recipriversexclusion

  I am writing a simple wrapper around boost::interprocess's vector container to implement a ring buffer in shared memory (shm) for IPC. Assume that buf is an instance of RingBuffer created in shm. Now, in its ctor, buf itself allocates a private boost::interprocess::vector data member to store values, e.g. m_data. My question is: I think m_data should also be created in shared memory. But it this a necessity? What happens if buf that was created in shm itself, allocates standard memory, i.e. using new. Does this get allocated on the calling process's heap? I don't think buf is allocated there so how come a data member that is private to an object not on a process's heap gets allocated there. I'm confused.

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• Socket server with multiple clients, sending messages to many clients without hurting liveliness

  - by Karl Johanson

  I have a small socket server, and I need to distribute various messages from client-to-client depending on different conditionals. However I think I have a small problem with livelyness in my current code, and is there anything wrong in my approach: public class CuClient extends Thread { Socket socket = null; ObjectOutputStream out; ObjectInputStream in; CuGroup group; public CuClient(Socket s, CuGroup g) { this.socket = s; this.group = g; out = new ObjectOutputStream(this.socket.getOutputStream()); out.flush(); in = new ObjectInputStream(this.socket.getInputStream()); } @Override public void run() { String cmd = ""; try { while (!cmd.equals("client shutdown")) { cmd = (String) in.readObject(); this.group.broadcastToGroup(this, cmd); } out.close(); in.close(); socket.close(); } catch (Exception e) { System.out.println(this.getName()); e.printStackTrace(); } } public void sendToClient(String msg) { try { this.out.writeObject(msg); this.out.flush(); } catch (IOException ex) { } } And my CuGroup: public class CuGroup { private Vector<CuClient> clients = new Vector<CuClient>(); public void addClient(CuClient c) { this.clients.add(c); } void broadcastToGroup(CuClient clientName, String cmd) { Iterator it = this.clients.iterator(); while (it.hasNext()) { CuClient cu = (CuClient)it.next(); cu.sendToClient(cmd); } } } And my main-class: public class SmallServer { public static final Vector<CuClient> clients = new Vector<CuClient>(10); public static boolean serverRunning = true; private ServerSocket serverSocket; private CuGroup group = new CuGroup(); public void body() { try { this.serverSocket = new ServerSocket(1337, 20); System.out.println("Waiting for clients\n"); do { Socket s = this.serverSocket.accept(); CuClient t = new CuClient(s,group); System.out.println("SERVER: " + s.getInetAddress() + " is connected!\n"); t.start(); } while (this.serverRunning); } catch (IOException ex) { ex.printStackTrace(); } } public static void main(String[] args) { System.out.println("Server"); SmallServer server = new SmallServer(); server.body(); } } Consider the example with many more groups, maybe a Collection of groups. If they all synchronize on a single Object, I don't think my server will be very fast. I there a pattern or something that can help my liveliness?

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• Tree Node Checked behavior on a TreeView in Compact Framework 3.5 running on Windows Mobile 6.5

  - by Hydroslide

  I have been upgrading an existing .NET Windows Mobile application to use the 3.5 version of the compact framework and to run on Windows Mobile 6.5. I have a form with a TreeView. The TreeView.Checkboxes property is set to true so that each node has a check box. This gives no trouble in all previous versions of Windows Mobile. However, in version 6.5 when you click on a check box it appears to check and then uncheck instantaneously. But it only raises the AfterCheck event once. The only way I can get a check to stick is by double clicking it (which is the wrong behavior). Has anyone seen this behavior? Does anyone know of a workaround for it? I have included a simple test form. Dump this form into a Visual Studio 2008 Smart Device application targeted at Windows Mobile 6 to see what I mean. Public Class frmTree Inherits System.Windows.Forms.Form #Region " Windows Form Designer generated code " Public Sub New() MyBase.new() ' This call is required by the Windows Form Designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. End Sub 'Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected Overrides Sub Dispose(ByVal disposing As Boolean) If disposing AndAlso components IsNot Nothing Then components.Dispose() End If MyBase.Dispose(disposing) End Sub 'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer Friend WithEvents TreeView1 As System.Windows.Forms.TreeView Private mainMenu1 As System.Windows.Forms.MainMenu 'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor. <System.Diagnostics.DebuggerStepThrough()> _ Private Sub InitializeComponent() Dim TreeNode1 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node0") Dim TreeNode2 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node2") Dim TreeNode3 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node3") Dim TreeNode4 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node4") Dim TreeNode5 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node1") Dim TreeNode6 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node5") Dim TreeNode7 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node6") Dim TreeNode8 As System.Windows.Forms.TreeNode = New System.Windows.Forms.TreeNode("Node7") Me.mainMenu1 = New System.Windows.Forms.MainMenu Me.TreeView1 = New System.Windows.Forms.TreeView Me.SuspendLayout() ' 'TreeView1 ' Me.TreeView1.CheckBoxes = True Me.TreeView1.Location = New System.Drawing.Point(37, 41) Me.TreeView1.Name = "TreeView1" TreeNode2.Text = "Node2" TreeNode3.Text = "Node3" TreeNode4.Text = "Node4" TreeNode1.Nodes.AddRange(New System.Windows.Forms.TreeNode() {TreeNode2, TreeNode3, TreeNode4}) TreeNode1.Text = "Node0" TreeNode6.Text = "Node5" TreeNode7.Text = "Node6" TreeNode8.Text = "Node7" TreeNode5.Nodes.AddRange(New System.Windows.Forms.TreeNode() {TreeNode6, TreeNode7, TreeNode8}) TreeNode5.Text = "Node1" Me.TreeView1.Nodes.AddRange(New System.Windows.Forms.TreeNode() {TreeNode1, TreeNode5}) Me.TreeView1.Size = New System.Drawing.Size(171, 179) Me.TreeView1.TabIndex = 0 ' 'frmTree ' Me.AutoScaleDimensions = New System.Drawing.SizeF(96.0!, 96.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi Me.AutoScroll = True Me.ClientSize = New System.Drawing.Size(240, 268) Me.Controls.Add(Me.TreeView1) Me.Menu = Me.mainMenu1 Me.Name = "frmTree" Me.Text = "frmTree" Me.ResumeLayout(False) End Sub #End Region End Class

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• replace characters which do not match with the ones in a regex

  - by Cristian Boariu

  Hi, I have this regex: private static final String SPACE_PATH_REGEX ="[a-z|A-Z|0-9|\\/|\\-|\\_|\\+]+"; I check if my string matches this regex and IF NOT, i want to replace all characters which are not here, with "_". I've tried like: private static final String SPACE_PATH_REGEX_EXCLUDE = "[~a-z|A-Z|0-9|\\/|\\-|\\_|\\+]+"; if (myCompanyName.matches(SPACE_PATH_REGEX)) { myNewCompanySpaceName = myCompanyName; } else{ myNewCompanySpaceName = myCompanyName.replaceAll( SPACE_PATH_REGEX_EXCLUDE, "_"); } but it does not work..., so in the 2nd regex "~" seems to not omit the following chars. Any idea?

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• replace characters which do not matches the ones in a regex

  - by Cristian Boariu

  Hi, I have this regex: private static final String SPACE_PATH_REGEX ="[a-z|A-Z|0-9|\\/|\\-|\\_|\\+]+"; I check if my string matches these regex and IF NOT, i want to replace all characters which are not here, with "_". I;ve tried like: private static final String SPACE_PATH_REGEX_EXCLUDE ="[~a-z|A-Z|0-9|\\/|\\-|\\_|\\+]+"; if (myCompanyName.matches(SPACE_PATH_REGEX)) { myNewCompanySpaceName = myCompanyName; } else{ myNewCompanySpaceName = myCompanyName.replaceAll(SPACE_PATH_REGEX_EXCLUDE, "_"); } but does not work..., so in the 2nd regex "~" seems to not omit the following chars. Any ideea?

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• WPF: Problem with SelectedItem for ComboBox

  - by Anry

  XAML: <ComboBox Height="27" Margin="124,0,30,116" Name="cbProductDefaultVatRate" VerticalAlignment="Bottom" ItemsSource="{Binding}"> <ComboBox.ItemTemplate> <DataTemplate> <Label Height="26" Content="{Binding Path=Value}"/> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> Set Data for cbProductDefaultVatRate.Items (Type - VatRate): private void ShowAllVatRates() { cbProductDefaultVatRate.Items.Clear(); cbProductDefaultVatRate.ItemsSource = new VatRateRepository().GetAll(); } Similarly, I defined property: private Product SelectedProduct { get; set; } The Product contains VatRate: SelectedProduct.DefaultVatRate How to set SelectedItem equal SelectedProduct.DefaultVatRate? I tried: cbProductDefaultVatRate.SelectedItem = SelectedProduct.DefaultVatRate; But it does not work. Thank you for answers!

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• Create a mirrored linked list in Java

  - by glacier89

  Linked-List: Mirror Consider the following private class for a node of a singly-linked list of integers: private class Node{ public int value; public Node next; } A wrapper-class, called, ListImpl, contains a pointer, called start to the first node of a linked list of Node. Write an instance-method for ListImpl with the signature: public void mirror(); That makes a reversed copy of the linked-list pointed to by start and appends that copy to the end of the list. So, for example the list: start 1 2 3 after a call to mirror, becomes: start 1 2 3 3 2 1 Note: in your answer you do not need to dene the rest of the class for ListImpl just the mirror method.

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• linker error in simple program: multiple definition of function

  - by BillyJean

  My function test is added to two different .cpp-files and the functions are private to their respective files as shown below test1.cpp #include <iostream> using namespace std; void test() { cout << "test" << endl; } test2.cpp #include <iostream> using namespace std; void test() { cout << "test" << endl; } main.cpp #include <iostream> using namespace std; int main() { return 0; } During linking I get the error multiple definition of test() - but how is that possible, considering that the two files have their own private scope!? I could understand it if I included the function prototype in each .cpp-files' corresponding header, but there is no such thing in this example.

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• Using Effect For Fog of War

  - by Qua

  I'm trying to apply fog of war to areas on the screen not currently visible to the player. I do this by rendering the game content in one RenderTarget and the the fog of war into another, and then I merge them with an effect file that takes the color from the game RenderTarget and the alpha from the fog of war render target. The FOW RenderTarget is black where the FOW appears, and white where it doesn't. This does work, but it colors the fog of war (the unrevealed locations) white instead of the intended color of black. Before applying the effect I clear the backbuffer of the device to white. When I try to clear it to black, non of the fog of war appears at all, which I assume is a product of alpha blending with black. It works for all other colors, however - giving the resulting screen a tint of that color. How do I archieve a black fog while still being able to do alpha blending between the two render targets? The rendering code for applying the FOW: private RenderTarget2D mainTarget; private RenderTarget2D lightTarget; private void CombineRenderTargetsAndDraw() { batch.GraphicsDevice.SetRenderTarget(null); batch.GraphicsDevice.Clear(Color.White); fogOfWar.Parameters["LightsTexture"].SetValue(lightTarget); batch.Begin(SpriteSortMode.Immediate, BlendState.AlphaBlend); fogOfWar.CurrentTechnique.Passes[0].Apply(); batch.Draw( mainTarget, new Rectangle(0, 0, batch.GraphicsDevice.PresentationParameters.BackBufferWidth, batch.GraphicsDevice.PresentationParameters.BackBufferHeight), Color.White ); batch.End(); } The effect file I'm using to apply the FOW: texture LightsTexture; sampler ColorSampler : register(s0); sampler LightsSampler = sampler_state{ Texture = <LightsTexture>; }; struct VertexShaderOutput { float4 Position : POSITION0; float2 TexCoord : TEXCOORD0; }; float4 PixelShaderFunction(VertexShaderOutput input) : COLOR0 { float2 tex = input.TexCoord; float4 color = tex2D(ColorSampler, tex); float4 alpha = tex2D(LightsSampler, tex); return float4(color.r, color.g, color.b, alpha.r); } technique Technique1 { pass Pass1 { PixelShader = compile ps_2_0 PixelShaderFunction(); } }

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• SSHing into EC2 instance fails - -v details below!

  - by ming yeow

  Hi folks! I created a new ec2 instance, but i am unable to ssh in with the key i normally use with my other instances. The -v details are below. Thanks! debug1: Host 'dbl01' is known and matches the RSA host key. debug1: Found key in /Users/mingyeow/.ssh/known_hosts:26 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering public key: /Users/mingyeow/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /Users/mingyeow/.ssh/identity debug1: Trying private key: /Users/mingyeow/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey).

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• Playing a Song causing WP7 to crash on phone, but not on emulator

  - by Michael Zehnich

  Hi there, I am trying to implement a song into a game that begins playing and continually loops on Windows Phone 7 via XNA 4.0. On the emulator, this works fine, however when deployed to a phone, it simply gives a black screen before going back to the home screen. Here is the rogue code in question, and commenting this code out makes the app run fine on the phone: // in the constructor fields private Song song; // in the LoadContent() method song = Content.Load<Song>("song"); // in the Update() method if (MediaPlayer.GameHasControl && MediaPlayer.State != MediaState.Playing) { MediaPlayer.Play(song); } The song file itself is a 2:53 long, 2.28mb .wma file at 106kbps bitrate. Again this works perfectly on emulator but does not run at all on phone. Thanks for any help you can provide!

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• error CS0133: Assigning the result of a function to a const in C#.net

  - by Greg

  Trying to tidy up scope and avoid possible multiple calls to RegisterWindowMessage. Currently have a class used once with the following member [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] static extern int RegisterWindowMessage(string lpString); private int m_message = RegisterWindowMessage("MY_MSG"); As we only have one instance this seems ok, but think it would be more tidy to use. With my basic C# understanding this should call RegisterWindowMessage and assign the result to int and not allow it to change. private const int message = RegisterWindowMessage("MY_MSG"); however attempting to do so leads to a error CS0133: The expression being assigned to 'someclass.messageEvent' must be constant so now I'm confused, does this mean the function was being assigned and called each time m_message was used previously, is there something else missing?

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• how can retrieve a checked list of objects from ObjectListView c#?

  - by Sidaoui Mejdi

  I'm using ObjectListView with checkboxes, I would like to run a function on selected items to delete them. So i tried this Method but it not working: private List<Matricule> matrs; private void button1_Click(object sender, EventArgs e) { //List<Song> s = this.olvSongs.CheckedObjects.Count; //MessageBox.Show(this.olvSongs.CheckedItems.Count + " " + this.olvSongs.CheckedObjects.Count); string s = ""; foreach (var item in olvMatrs.SelectedItems) { matrs.Remove((Matricule)item); } this.olvSongs.SetObjects(matrs); } how can i do this task.

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• convert object to array

  - by zahir hussain

  <?php print_r($response->response->docs); ?> display the following Array ( [0] => Object ( [_fields:private] => Array ( [id]=>9093 [name]=>zahir) Object ( [_fields:private] => Array ( [id]=>9094 [name]=>hussain)..) how to change the object to array... i want the following Array([0]=>([id]=>9093 [name]=>zahir) [1]=>([id]=>9094 [name]=>hussain)...) can i do? no one can answer....

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• TDD and encapsulation priority conflict

  - by Hanseh

  Hi, I just started practicing TDD in my projects. I'm developing a project now using php/zend/mysql and phpunit/dbunit for testing. I'm just a bit distracted on the idea of encapsulation and the test driven approach. My idea behind encapsulation is to hide access to several object functionalities. To make it more clear, private and protected functions are not directly testable(unless you will create a public function to call it). So I end up converting some private and protected functions to public functions just to be able to test them. I'm really violating the principles of encapsulation to give way to micro function testability. Is this the correct way of doing it?

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• C# XMLSerializer fails with List<T>

  - by Redshirt

  Help... I'm using a singleton class to save all my settings info. It's first utilized by calling Settings.ValidateSettings(@"C:\MyApp") The problem I'm having is that 'List Contacts' is causing the xmlserializer to fail to write the settings file, or to load said settings. If I comment out the List then I have no problems saving/loading the xml file. What am I doing wrong... Thanks in advance // The actual settings to save public class MyAppSettings { public bool FirstLoad { get; set; } public string VehicleFolderName { get; set; } public string ContactFolderName { get; set; } public List<ContactInfo> Contacts { get { if (contacts == null) contacts = new List<ContactInfo>(); return contacts; } set { contacts = value; } } private List<ContactInfo> contacts; } // The class in which the settings are manipulated public static class Settings { public static string SettingPath; private static MyAppSettings instance; public static MyAppSettings Instance { get { if (instance == null) instance = new MyAppSettings(); return instance; } set { instance = value; } } public static void InitializeSettings(string path) { SettingPath = Path.GetFullPath(path + "\\MyApp.xml"); if (File.Exists(SettingPath)) { LoadSettings(); } else { Instance.FirstLoad = true; Instance.VehicleFolderName = "Cars"; Instance.ContactFolderName = "Contacts"; SaveSettingsFile(); } } // load the settings from the xml file private static void LoadSettings() { XmlSerializer ser = new XmlSerializer(typeof(MyAppSettings)); TextReader reader = new StreamReader(SettingPath); Instance = (MyAppSettings)ser.Deserialize(reader); reader.Close(); } // Save the settings to the xml file public static void SaveSettingsFile() { XmlSerializer ser = new XmlSerializer(typeof(MyAppSettings)); TextWriter writer = new StreamWriter(SettingPath); ser.Serialize(writer, Settings.Instance); writer.Close(); } public static bool ValidateSettings(string initialFolder) { try { Settings.InitializeSettings(initialFolder); } catch (Exception e) { return false; } // Do some validation logic here return true; } } // A utility class to contain each contact detail public class ContactInfo { public string ContactID; public string Name; public string PhoneNumber; public string Details; public bool Active; public int SortOrder; } }

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• Circular reference fix?

  - by SXMC

  Hi! I have a Player class in a separate unit as follows: TPlayer = class private ... FWorld: TWorld; ... public ... end; I also have a World class in a separate unit as follows: TWorld = class private ... FPlayer: TPlayer; ... public ... end; I have done it this way so that the Player can get data from the world via FWorld, and so that the other objects in the world can get the player data in a similar manner. As you can see this results in a circular reference (and therefore does not work). I have read that this implies bad code design, but I just can't think of any better other way. What could be a better way to do it? Cheers!

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• Dependency Injection with Spring/Junit/JPA

  - by Steve

  I'm trying to create JUnit tests for my JPA DAO classes, using Spring 2.5.6 and JUnit 4.8.1. My test case looks like this: @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath:config/jpaDaoTestsConfig.xml"} ) public class MenuItem_Junit4_JPATest extends BaseJPATestCase { private ApplicationContext context; private InputStream dataInputStream; private IDataSet dataSet; @Resource private IMenuItemDao menuItemDao; @Test public void testFindAll() throws Exception { assertEquals(272, menuItemDao.findAll().size()); } ... Other test methods ommitted for brevity ... } I have the following in my jpaDaoTestsConfig.xml: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- uses the persistence unit defined in the META-INF/persistence.xml JPA configuration file --> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean"> <property name="persistenceUnitName" value="CONOPS_PU" /> </bean> <bean id="groupDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.GroupDao" lazy-init="true" /> <bean id="permissionDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.PermissionDao" lazy-init="true" /> <bean id="applicationUserDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.ApplicationUserDao" lazy-init="true" /> <bean id="conopsUserDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.ConopsUserDao" lazy-init="true" /> <bean id="menuItemDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.MenuItemDao" lazy-init="true" /> <!-- enables interpretation of the @Required annotation to ensure that dependency injection actually occures --> <bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor"/> <!-- enables interpretation of the @PersistenceUnit/@PersistenceContext annotations providing convenient access to EntityManagerFactory/EntityManager --> <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/> <!-- transaction manager for use with a single JPA EntityManagerFactory for transactional data access to a single datasource --> <bean id="jpaTransactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="entityManagerFactory"/> </bean> <!-- enables interpretation of the @Transactional annotation for declerative transaction managment using the specified JpaTransactionManager --> <tx:annotation-driven transaction-manager="jpaTransactionManager" proxy-target-class="false"/> </beans> Now, when I try to run this, I get the following: SEVERE: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@fa60fa6] to prepare test instance [null(mil.navy.ndms.conops.common.dao.impl.MenuItem_Junit4_JPATest)] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mil.navy.ndms.conops.common.dao.impl.MenuItem_Junit4_JPATest': Injection of resource fields failed; nested exception is java.lang.IllegalStateException: Specified field type [interface javax.persistence.EntityManagerFactory] is incompatible with resource type [javax.persistence.EntityManager] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessAfterInstantiation(CommonAnnotationBeanPostProcessor.java:292) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:959) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:329) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:110) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:255) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:93) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:130) at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:61) at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:54) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44) at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:52) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196) Caused by: java.lang.IllegalStateException: Specified field type [interface javax.persistence.EntityManagerFactory] is incompatible with resource type [javax.persistence.EntityManager] at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.checkResourceType(InjectionMetadata.java:159) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.(PersistenceAnnotationBeanPostProcessor.java:559) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$1.doWith(PersistenceAnnotationBeanPostProcessor.java:359) at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:492) at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:469) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:351) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:296) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:745) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:448) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(AccessController.java:219) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:168) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:435) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:409) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:537) at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:180) at org.springframework.beans.factory.annotation.InjectionMetadata.injectFields(InjectionMetadata.java:105) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessAfterInstantiation(CommonAnnotationBeanPostProcessor.java:289) ... 18 more It seems to be telling me that its attempting to store an EntityManager object into an EntityManagerFactory field, but I don't understand how or why. My DAO classes accept both an EntityManager and EntityManagerFactory via the @PersistenceContext attribute, and they work find if I load them up and run them without the @ContextConfiguration attribute (i.e. if I just use the XmlApplcationContext to load the DAO and the EntityManagerFactory directly in setUp ()). Any insights would be appreciated. Thanks. --Steve

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• c# Active Directory via WMI

  - by Juri Bogdanov

  Hi! Does anyone has some example about accessing Active Directory, LDAP querying using WMI (System.Management namespace) and not System.DirectoryServices namespace. Here on MSDN page it is described a little using CIM classes http://msdn.microsoft.com/en-us/library/aa392320(v=VS.85).aspx But I cant find some C# example realizing it. For example, to access some Win32 class you have to initialize Scope object to use CIMV2 namespace private ConnectionOptions connection; private ManagementScope scope; ... connection = new ConnectionOptions(); ... scope = new ManagementScope("\\\\" + computer + "\\root\\CIMV2", connection); try { scope.Connect(); } And use ObjectQuery class for querying WMI data ObjectQuery objectQuery = new ObjectQuery("SELECT Name FROM Win32_Processor"); ManagementObjectSearcher searcher = ManagementObjectSearcher(scope, objectQuery); foreach (ManagementObject queryObj in searcher.Get()) { return queryObj["Name"].ToString(); } How is it possible to access AD using the same scope? Thanks :)

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• NHibernate transactions randomly not rolled back

  - by cbp

  I have a suite of integration tests that run inside transactions. Sometimes it seems that NHibernate transactions are not being correctly rolled back. I can't work out what causes this. Here is a slightly simplified overview of the base class that these integration test fixtures run with: public class IntegrationTestFixture { private TransactionScope _transactionScope; private ConnectionScope _connectionScope; [TestFixtureSetUp] public virtual void TestFixtureSetUp() { var session = NHibernateSessionManager.SessionFactory.OpenSession(); CallSessionContext.Bind(session); _connectionScope = new ConnectionScope(); _transactionScope = new TransactionScope(); } [TestFixtureTearDown] public virtual void TestFixtureTearDown() { _transactionScope.Dispose(); _connectionScope.Dispose(); var session = CurrentSessionContext.Unbind(SessionFactory); session.Close(); session.Dispose(); } } A call to the TransactionScope's commit method is never made, therefore how is it possible that data still ends up in the database?

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• Is there any reason to use "plain old data" classes?

  - by Michael

  In legacy code I occasionally see classes that are nothing but wrappers for data. something like: class Bottle { int height; int diameter; Cap capType; getters/setters, maybe a constructor } My understanding of OO is that classes are structures for data and the methods of operating on that data. This seems to preclude objects of this type. To me they are nothing more than structs and kind of defeat the purpose of OO. I don't think it's necessarily evil, though it may be a code smell. Is there a case where such objects would be necessary? If this is used often, does it make the design suspect?

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• Implementing toString on Java enums

  - by devoured elysium

  Hello It seems to be possible in Java to write something like this: private enum TrafficLight { RED, GREEN; public String toString() { return //what should I return here if I want to return //"abc" when red and "def" when green? } } Now, I'd like to know if it possible to returnin the toString method "abc" when the enum's value is red and "def" when it's green. Also, is it possible to do like in C#, where you can do this?: private enum TrafficLight { RED = 0, GREEN = 15 ... } I've tried this but it but I'm getting compiler errors with it. Thanks

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• 'foreach' failing when using Parallel Task Library

  - by Chris Arnold

  The following code creates the correct number of files, but every file contains the contents of the first list. Can anyone spot what I've done wrong please? private IList<List<string>> GetLists() { // Code omitted for brevity... } private void DoSomethingInParallel() { var lists = GetLists(); var tasks = new List<Task>(); var factory = new TaskFactory(); foreach (var list in lists) { tasks.Add(factory.StartNew(() => { WriteListToLogFile(list); })); } Task.WaitAll(tasks.ToArray()); }

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• Asynchronous Silverlight WCF callback

  - by Matt

  I've created my own WCF service and I've successfully been able to talk to it via my Silverlight client. I ran into an interesting problem on my asynchronous callbacks though. When my callback is invoked, I can't update any UI controls with the dreaded invalid cross thread access Here's what my callback function looks like private void GetTimeCallBack( object sender, Talk.ClientBase<IService>.ClientEventArgs e ) { lblDisplay.Text = e.Object.ToString(); } A quick google search showed me that I have to do this instead. private void GetTimeCallBack( object sender, Talk.ClientBase<IService>.ClientEventArgs e ) { Dispatcher.BeginInvoke( () => lblDisplay.Text = e.Object.ToString() ); } Now everything works fine, but I wasn't expecting my callback to be running on a different thread. Will I always have to use the Dispatcher class in order to modify anything within my class or is this just limited to UI elements? I've not familiar with the Dispatcher class at all so I'm looking to understand it more.

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