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  • sort arrow is always showing up once sorting is used

    - by kksachin
    we have several pages as tabs where datatable is used in most of the pages.when we sort on a particular coulmn and exit the page and re enter this page the arrow appears(up /down based on how we left) Although the data is not sorted in the direction the arrow shows.i have set preserveSort and preserveDataMode to false. The arrow is set to true in the column's t:commandSortHeader tag in all the pages. is this a bug or am i missing any setting?I have tried to set forceId to false in t:commandSortHeader but of now use.

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  • Can this django query be improved?

    - by Hobhouse
    Given a model structure like this: class Book(models.Model): user = models.ForeignKey(User) class Readingdate(models.Model): book = models.ForeignKey(Book) date = models.DateField() One book may have several readingdates. How do I list books having at least one readingdate within a specific year? I can do this: from_date = datetime.date(2010,1,1) to_date = datetime.date(2010,12,31) book_ids = Readingdate.objects\ .filter(date__range=(from_date,to_date))\ .values_list('book_id', flat=True) books_read_2010 = Book.objects.filter(id__in=book_ids) Is it possible to do this with one queryset, or is this the best way?

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  • Pass param to a silverlight application

    - by Lucas_Santos
    In my javascript I create my <OBJECT> tag var htmlEmbedSilverlight = "<div id='silverlightControlHost'> " + "<object data='data:application/x-silverlight-2,' type='application/x-silverlight-2' width='550px' height='250px'> " + "<param name='source' value='../../ClientBin/FotoEmprestimoChave.xap'/> " + "<param name='onError' value='onSilverlightError' /> " + "<param name='background' value='white' /> " + "<param name='minRuntimeVersion' value='4.0.60310.0' /> " + "<param name='autoUpgrade' value='true' /> " + "<param name='initparams' values='chave_id=" + data + "' /> " + "<a href='http://go.microsoft.com/fwlink/?LinkID=149156&v=4.0.60310.0' style='text-decoration:none'> " + "<img src='http://go.microsoft.com/fwlink/?LinkId=161376' alt='Get Microsoft Silverlight' style='border-style:none'/> " + "</a> " + "</object><iframe id='_sl_historyFrame' style='visibility:hidden;height:0px;width:0px;border:0px'></iframe></div>"; $("#tiraFotoSilverlight").html(htmlEmbedSilverlight); This is a reference to my Silverlight application where I call in my Web Application. The problem is my <param name='initparams' values='chave_id=" + data + "' /> " because in my App.xaml in Silverlight, I have the code below private void Application_Startup(object sender, StartupEventArgs e) { if (e.InitParams != null) { foreach (var item in e.InitParams) { this.Resources.Add(item.Key, item.Value); } } this.RootVisual = new MainPage(); } Where InitParams always has Count = 0 and I don't know why. Can someone help me ? I'm just trying to pass a value to my Silverlight application, without a PostBack. Rendered <object width="550px" height="250px" type="application/x-silverlight-2" data="data:application/x-silverlight-2,"> <param value="../../ClientBin/FotoEmprestimoChave.xap" name="source"> <param value="onSilverlightError" name="onError"> <param value="white" name="background"> <param value="4.0.60310.0" name="minRuntimeVersion"> <param value="true" name="autoUpgrade"> <param values="chave_id=1" name="initparams"> <a style="text-decoration:none" href="http://go.microsoft.com/fwlink/?LinkID=149156&v=4.0.60310.0"> </object>

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  • How to quit / terminate / stop a j2me midlet?

    - by hsmit
    Surprisingly terminating a midlet doesn't work in my application. Maybe it is because I'm using Threads, but destroyApp() and notifyDestroyed() are not sufficient. Take for example the following code: protected void destroyApp(boolean arg0) throws MIDletStateChangeException { System.out.println("destroying"); notifyDestroyed(); } protected void startApp() throws MIDletStateChangeException { try { // init modules controller.initialize(); }catch (Exception e) { viewer.showAlert("error in startApp() init controller"); destroyApp(true); } }

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  • help me understand the method Validator.TryValidateObject()

    - by Benny
    this is the method definition: public static bool TryValidateObject( Object instance, ValidationContext validationContext, ICollection<ValidationResult> validationResults, bool validateAllProperties ) what i am confused is the validateAllProperties parameter, I understand when it is true-validate all properties. What about when it is false, not validate all properties, but which property will be validated?

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  • Can't get jQuery AutoComplete to work with External JSON

    - by rockinthesixstring
    I'm working on an ASP.NET app where I'm in need of jQuery AutoComplete. Currently there is nothing happening when I type data into the txt63 input box (and before you flame me for using a name like txt63, I know, I know... but it's not my call :D ). Here's my javascript code <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/jquery-ui.min.js" type="text/javascript"></script> <script src="http://jquery-ui.googlecode.com/svn/tags/latest/external/jquery.bgiframe-2.1.1.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/i18n/jquery-ui-i18n.min.js" type="text/javascript"></script> <script language="javascript" type="text/javascript"> var theSource = '../RegionsAutoComplete.axd?PID=<%= hidden62.value %>' $(function () { $('#<%= txt63.ClientID %>').autocomplete({ source: theSource, minLength: 2, select: function (event, ui) { $('#<%= hidden63.ClientID %>').val(ui.item.id); } }); }); and here is my HTTP Handler Namespace BT.Handlers Public Class RegionsAutoComplete : Implements IHttpHandler Public ReadOnly Property IsReusable() As Boolean Implements System.Web.IHttpHandler.IsReusable Get Return False End Get End Property Public Sub ProcessRequest(ByVal context As System.Web.HttpContext) Implements System.Web.IHttpHandler.ProcessRequest 'the page contenttype is plain text context.Response.ContentType = "application/json" context.Response.ContentEncoding = Encoding.UTF8 'set page caching context.Response.Cache.SetExpires(DateTime.Now.AddHours(24)) context.Response.Cache.SetCacheability(HttpCacheability.Public) context.Response.Cache.SetSlidingExpiration(True) context.Response.Cache.VaryByParams("PID") = True Try ' use the RegionsDataContext Using RegionDC As New DAL.RegionsDataContext ' query the database based on the querysting PID Dim q = (From r In RegionDC.bt_Regions _ Where r.PID = context.Request.QueryString("PID") _ Select r.Region, r.ID) ' now we loop through the array ' and write out the ressults Dim sb As New StringBuilder sb.Append("{") For Each item In q sb.Append("""" & item.Region & """: """ & item.ID & """,") Next sb.Append("}") context.Response.Write(sb.ToString) End Using Catch ex As Exception HealthMonitor.Log(ex, False, "This error occurred while populating the autocomplete handler") End Try End Sub End Class End Namespace The rest of my ASPX page has the appropriate controls as I had this working with the old version of the jQuery library. I'm trying to get it working with the new one because I heard that the "dev" CDN was going to be obsolete. Any help or direction will be greatly appreciated.

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  • jframe adding own design jinternal frame error

    - by Van Minh
    I designed a title bar color on my JInternal frame. Then I took attempt to add it to my JFrame, but I cannot. Here is the code of my title bar: public class MyIFtitleBar extends BasicInternalFrameTitlePane { public MyIFtitleBar(JInternalFrame jif) { super(jif); } protected void paintTitleBackground(Graphics g){ g.setColor(Color.pink); g.fillRect(0, 0, getWidth(), getHeight()); } } Here is my JInternal frame. I tried running it in its psvm method, that worked! public class FitnessProg_Frame extends javax.swing.JInternalFrame { public FitnessProg_Frame() { initComponents(); this.setUI(new BasicInternalFrameUI(this){ @Override protected JComponent createNorthPane(JInternalFrame jif) { return new MyIFtitleBar(jif); } }); } @SuppressWarnings("unchecked") private void initComponents() { setBackground(new java.awt.Color(255, 255, 255)); setBorder(new javax.swing.border.MatteBorder(null)); setTitle("Fitness Progarm"); setPreferredSize(new java.awt.Dimension(507, 304)); pack(); } } But when I add it to my JFrame I get an error: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException Here is my JFrame code: public class NewJFrame extends javax.swing.JFrame { public NewJFrame() { initComponents(); FitnessProg_Frame ff = new FitnessProg_Frame(); ff.setVisible(true); mydes.add(ff); // this line made errors } @SuppressWarnings("unchecked") private void initComponents() { mydes = new javax.swing.JDesktopPane(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); javax.swing.GroupLayout mydesLayout = new javax.swing.GroupLayout(mydes); mydes.setLayout(mydesLayout); mydesLayout.setHorizontalGroup( mydesLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 400, Short.MAX_VALUE) ); mydesLayout.setVerticalGroup( mydesLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 300, Short.MAX_VALUE) ); getContentPane().add(mydes, java.awt.BorderLayout.CENTER); pack(); } public static void main(String args[]) { try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new NewJFrame().setVisible(true); } }); } private javax.swing.JDesktopPane mydes; }

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  • Does my TPL partitioner cause a deadlock?

    - by Scott Chamberlain
    I am starting to write my first parallel applications. This partitioner will enumerate over a IDataReader pulling chunkSize records at a time from the data-source. protected class DataSourcePartitioner<object[]> : System.Collections.Concurrent.Partitioner<object[]> { private readonly System.Data.IDataReader _Input; private readonly int _ChunkSize; public DataSourcePartitioner(System.Data.IDataReader input, int chunkSize = 10000) : base() { if (chunkSize < 1) throw new ArgumentOutOfRangeException("chunkSize"); _Input = input; _ChunkSize = chunkSize; } public override bool SupportsDynamicPartitions { get { return true; } } public override IList<IEnumerator<object[]>> GetPartitions(int partitionCount) { var dynamicPartitions = GetDynamicPartitions(); var partitions = new IEnumerator<object[]>[partitionCount]; for (int i = 0; i < partitionCount; i++) { partitions[i] = dynamicPartitions.GetEnumerator(); } return partitions; } public override IEnumerable<object[]> GetDynamicPartitions() { return new ListDynamicPartitions(_Input, _ChunkSize); } private class ListDynamicPartitions : IEnumerable<object[]> { private System.Data.IDataReader _Input; int _ChunkSize; private object _ChunkLock = new object(); public ListDynamicPartitions(System.Data.IDataReader input, int chunkSize) { _Input = input; _ChunkSize = chunkSize; } public IEnumerator<object[]> GetEnumerator() { while (true) { List<object[]> chunk = new List<object[]>(_ChunkSize); lock(_Input) { for (int i = 0; i < _ChunkSize; ++i) { if (!_Input.Read()) break; var values = new object[_Input.FieldCount]; _Input.GetValues(values); chunk.Add(values); } if (chunk.Count == 0) yield break; } var chunkEnumerator = chunk.GetEnumerator(); lock(_ChunkLock) //Will this cause a deadlock? { while (chunkEnumerator.MoveNext()) { yield return chunkEnumerator.Current; } } } } IEnumerator IEnumerable.GetEnumerator() { return ((IEnumerable<object[]>)this).GetEnumerator(); } } } I wanted IEnumerable object it passed back to be thread safe (the .Net example was so I am assuming PLINQ and TPL could need it) will the lock on _ChunkLock near the bottom help provide thread safety or will it cause a deadlock? From the documentation I could not tell if the lock would be released on the yeld return. Also if there is built in functionality to .net that will do what I am trying to do I would much rather use that. And if you find any other problems with the code I would appreciate it.

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  • How to Update TreeViewItem's IsExpanded property to false in code behind?

    - by viky
    I am working with WPF TreeView control. I am creating a hierarchical data structure and assigning it to ItemsSource and it will generate TreeviewItems automatically. By default I use IsExpanded of TreeViewItem to true. But in a particular case, I want to set IsExpanded property to false. So that treeview loading doesn't take time to generate all items. How can I set that in code since I don't have reference to TreeViewItem's instance at that time?

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  • Regular Expression in PHP

    - by Patrick Gates
    I need a regular in expression in PHP that I can plug into preg_match_all and find if an @ sign and any character number or letter follows right after that. So if I put "@patrick hello there" it will come up true, if I put in "I saw her @ the mall" it will be false. Thank you :)

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  • Interpret a rule applying multiple xpath queries on multiple XML documents

    - by Damien
    Hi, I need to build a component which would take a few XML documents in input and check the following kind of rules: XML1:/bookstore/book[price>35.00] != null and (XML2:/city/name = 'Montreal' or XML3://customer[@language] contains 'en') Basically my component should be able to: substitute the XML tokens with the corresponding XML document(before colon) apply xpath query on this XML document check the xpath output against expected result ("=", "!=", "contains") follow the basic syntax ("and", "or" and parentheses) tell if the rule is true or false Do you know any library which could help me? maybe JavaCC? Thanks

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  • is rand() is perdicatable in C++

    - by singh
    Hi When i run below program i always get same values each time..Is rand is not a true random function. int main() { while(1) { getch(); cout<<rand()<<endl; } } In each run i am getting below values. 41 18467 6334 26500 19169 15724 ......

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  • Bash: easy way to put a configurable load on a system?

    - by WizardOfOdds
    In order to test how a program reacts when system resources become scarce (mainly the CPU but I'm interested in disk I/O too), I'd like to put an arbitrary load on the system. Currently I'm doing something like this: #!/bin/bash while true do echo "a" >> a.txt md5 a.txt done I could also start mp3-encoding audio files, or whatever. What would be an easy and small Bash script that could be used to simulate an arbitrary load, ideally configurable using parameter(s)?

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  • Can I do a URL Rewrite to a different Tomcat instance?

    - by RodeoClown
    Is is possible to use Tuckey's URL Rewrite to rewrite to a different Tomcat instance? I have it working using crossContext="true" rewriting to a different servlet on the same tomcat instance, but our production server has multiple tomcat instances running and I want to rewrite to one of them instead? If it's not possible using the URL Rewrite filter, is there another way of doing it? Thanks.

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  • UpdatePanel Full Postback

    - by Korivo
    Greetings, here is the scenario. I have and .aspx page with and updatepanel like this <asp:UpdatePanel id="uPanelMain" runat="server"> <ContentTemplate> <uc:Calendar id="ucCalendar" runat="server" Visible="true" /> <uc:Scoring id="ucScoring" runat="server" Visible="false" /> </ContentTemplate> The control ucCalendar is loaded first and it contains a grid like this <asp:DataGrid CssClass="grid" ID="gridGames" runat="server" AutoGenerateColumns="False" HeaderStyle-CssClass="gridHeader" ItemStyle-CssClass="gridScoringRow" GridLines="None" ItemStyle-BackColor="#EEEEEE" AlternatingItemStyle-BackColor="#F5F5F5" OnEditCommand="doScoreGame" OnDeleteCommand="doEditGame" OnCancelCommand="printLineup" OnItemDataBound="gridDataBound"> <Columns> <asp:TemplateColumn > <ItemTemplate> <asp:CheckBox ID="chkDelete" runat="server" /> </ItemTemplate> </asp:TemplateColumn> <asp:BoundColumn DataField="idGame" Visible="false" /> <asp:BoundColumn DataField="isClose" Visible="false" /> <asp:TemplateColumn HeaderText="Status"> <ItemTemplate> <asp:Image ID="imgStatus" runat="server" ImageUrl="~/img/icoX.png" alt="icoStatus" /> </ItemTemplate> </asp:TemplateColumn> <asp:TemplateColumn> <ItemTemplate> <asp:LinkButton ID="linkScore" runat="server" CommandName="Edit" Text="Score" /> </ItemTemplate> </asp:TemplateColumn> </Columns> </asp:DataGrid> So when i click the "linkButton", the codebehind of the userControl calls a public method in the .aspx as this: From the userControl protected void doScoreGame(object sender, DataGridCommandEventArgs e) { ((GM)this.Page).showScoring(null, null); } From the .aspx page public void showScoring(object sender, EventArgs e) { removeLastLoadedControl(); ucScoring.Visible = true; } So, here comes the problem: There are two postbacks taking place when I change the visible attribute of the ucScoring control. The first postback is fine, it's handled by the updatePanel. The second postback is a full postback, and i really don't understand why it is happening. I'm really lost here, please help! Thanks Mat

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  • Why oh why doesn't my asp.net treeview update?

    - by Brendan
    I'm using an ASP.net treeview on a page with a custom XmlDataSource. When the user clicks on a node of the tree, a detailsview pops up and edits a bunch of things about the underlying object. All this works properly, and the underlying object gets updated in my background object-management classes. Yay! However, my treeview just isn't updating the display. Either immediately (which i would like it to), or on full page re-load (which is the minimal useful level i need it to be at). Am i subclassing XmlDataSource poorly? I really don't know. Can anyone point me in a good direction? Thanks! The markup looks about like this (chaff removed): <data:DefinitionDataSource runat="server" ID="DefinitionTreeSource" RootDefinitionID="uri:1"></data:DefinitionDataSource> <asp:TreeView ID="TreeView" runat="server" DataSourceID="DefinitionTreeSource"> <DataBindings> <asp:TreeNodeBinding DataMember="definition" TextField="name" ValueField="id" /> </DataBindings> </asp:TreeView> <asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="Id" DataSourceID="DefinitionSource" DefaultMode="Edit"> <Fields> <asp:BoundField DataField="Name" HeaderText="Name" HeaderStyle-Wrap="false" SortExpression="Name" /> <asp:CommandField ShowCancelButton="False" ShowInsertButton="True" ShowEditButton="True" ButtonType="Button" /> </Fields> </asp:DetailsView> And the DefinitionTreeSource code looks like this: public class DefinitionDataSource : XmlDataSource { public string RootDefinitionID { get { if (ViewState["RootDefinitionID"] != null) return ViewState["RootDefinitionID"] as String; return null; } set { if (!Object.Equals(ViewState["RootDefinitionID"], value)) { ViewState["RootDefinitionID"] = value; DataBind(); } } } public DefinitionDataSource() { } public override void DataBind() { base.DataBind(); setData(); } private void setData() { String defXML = "<?xml version=\"1.0\" ?>"; Test.Management.TestManager.Definition root = Test.Management.TestManager.Definition.GetDefinitionById(RootDefinitionID); if (root != null) this.Data = defXML + root.ToXMLString(); else this.Data = defXML + "<definition id=\"null\" name=\"Set Root Node\" />"; } } }

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  • validate uniqueness amongst multiple subclasses with Single Table Inheritance

    - by irkenInvader
    I have a Card model that has many Sets and a Set model that has many Cards through a Membership model: class Card < ActiveRecord::Base has_many :memberships has_many :sets, :through => :memberships end class Membership < ActiveRecord::Base belongs_to :card belongs_to :set validates_uniqueness_of :card_id, :scope => :set_id end class Set < ActiveRecord::Base has_many :memberships has_many :cards, :through => :memberships validates_presence_of :cards end I also have some sub-classes of the above using Single Table Inheritance: class FooCard < Card end class BarCard < Card end and class Expansion < Set end class GameSet < Set validates_size_of :cards, :is => 10 end All of the above is working as I intend. What I'm trying to figure out is how to validate that a Card can only belong to a single Expansion. I want the following to be invalid: some_cards = FooCard.all( :limit => 25 ) first_expansion = Expansion.new second_expansion = Expansion.new first_expansion.cards = some_cards second_expansion.cards = some_cards first_expansion.save # Valid second_expansion.save # **Should be invalid** However, GameSets should allow this behavior: other_cards = FooCard.all( :limit => 10 ) first_set = GameSet.new second_set = GameSet.new first_set.cards = other_cards # Valid second_set.cards = other_cards # Also valid I'm guessing that a validates_uniqueness_of call is needed somewhere, but I'm not sure where to put it. Any suggestions? UPDATE 1 I modified the Expansion class as sugested: class Expansion < Set validate :validates_uniqueness_of_cards def validates_uniqueness_of_cards membership = Membership.find( :first, :include => :set, :conditions => [ "card_id IN (?) AND sets.type = ?", self.cards.map(&:id), "Expansion" ] ) errors.add_to_base("a Card can only belong to a single Expansion") unless membership.nil? end end This works when creating initial expansions to validate that no current expansions contain the cards. However, this (falsely) invalidates future updates to the expansion with new cards. In other words: old_exp = Expansion.find(1) old_exp.card_ids # returns [1,2,3,4,5] new_exp = Expansion.new new_exp.card_ids = [6,7,8,9,10] new_exp.save # returns true new_exp.card_ids << [11,12] # no other Expansion contains these cards new_exp.valid? # returns false ... SHOULD be true

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  • Default MVC Web Application Database

    - by wows
    When setting up a new ASP.NET MVC Web Application, the default connection string inside Web.Config is something like this: connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true" I'm just wanting to play around with logging in and registering, etc but when I run the app it obviously can't find a SQL database. What database with what tables do I need to setup to do this? I have SQL Server 2005 Standard installed on my system, is that enough? Thanks.

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  • Asynchronous IO in Java?

    - by thr
    What options for async io (socket-based) are there in java other then java.nio? Also does java.nio use threads in the backround (as I think .NET's async-socket-library does, maybe it's been changed) or is it "true" async io using a proper select call?

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  • How do I Print a dynamically created Flex component/chart that is not being displayed on the screen?

    - by Adam Jones
    I have a several chart components that I have created in Flex. Basically I have set up a special UI that allows the user to select which of these charts they want to print. When they press the print button each of the selected charts is created dynamically then added to a container. Then I send this container off to FlexPrintJob. i.e. private function prePrint():void { var printSelection:Box = new Box(); printSelection.percentHeight = 100; printSelection.percentWidth = 100; printSelection.visible = true; if (this.chkMyChart1.selected) { var rptMyChart1:Chart1Panel = new Chart1Panel(); rptMyChart1.percentHeight = 100; rptMyChart1.percentWidth = 100; rptMyChart1.visible = true; printSelection.addChild(rptMyChart1); } print(printSelection); } private function print(container:Box):void { var job:FlexPrintJob; job = new FlexPrintJob(); if (job.start()) { job.addObject(container, FlexPrintJobScaleType.MATCH_WIDTH); job.send(); } } This code works fine if the chart is actually displayed somewhere on the page but adding it dynamically as shown above does not. The print dialog will appear but nothing happens when I press OK. So I really have two questions: Is it possible to print flex components/charts when they are not visible on the screen? If so, how do I do it / what am I doing wrong? UPDATE: Well, at least one thing wrong is my use of the percentages in the width and height. Using percentages doesn't really make sense when the Box is not contained in another object. Changing the height and width to fixed values actually allows the printing to progress and solves my initial problem. printSelection.height = 100; printSelection.width = 100; But a new problem arises in that instead of seeing my chart, I see a black box instead. I have previously resolved this issue by setting the background colour of the chart to #FFFFFF but this doesn't seem to be working this time. UPDATE 2: I have seen some examples on the adobe site that add the container to the application but don't include it in the layout. This looks like the way to go. i.e. printSelection.includeInLayout = false; addChild(printSelection);

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  • Should all resources in a java web application be uniquely named?

    - by morgancodes
    Trying to understand resources in java-land. I believe the following is true: Resources loaded via the classpath have no namespace, they only have a file name. It's wisest to always load resources via the classpath, never via the file system, even in unit tests. Therefore, resources must always have unique file names, or collisions will occur. Are there flaws in my assumptions or my conclusion?

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  • inline and member initializers

    - by Alexander
    When should I inline a member function and when should I use member initializers? My code is below.. I would like to modify it so I could make use some inline when appropriate and member initializers: #include "Books.h" Book::Book(){ nm = (char*)""; thck = 0; wght = 0; } Book::Book(const char *name, int thickness, int weight){ nm = strdup(name); thck = thickness; wght = weight; } Book::~Book(){ } const char* Book::name(){ return nm; } int Book::thickness(){ return thck; } int Book::weight(){ return wght; } // // Prints information about the book using this format: // "%s (%d mm, %d dg)\n" // void Book::print(){ printf("%s (%d mm, %d dg)\n", nm, thck, wght); } Bookcase::Bookcase(int id){ my_id = id; no_shelf = 0; } int Bookcase::id(){ return my_id; } Bookcase::~Bookcase(){ for (int i = 0; i < no_shelf; i++) delete my_shelf[i]; } bool Bookcase::addShelf(int width, int capacity){ if(no_shelf == 10) return false; else{ my_shelf[no_shelf] = new Shelf(width, capacity); no_shelf++; return true; } } bool Bookcase::add(Book *bp){ int index = -1; int temp_space = -1; for (int i = 0; i < no_shelf; i++){ if (bp->weight() + my_shelf[i]->curCapacity() <= my_shelf[i]->capacity()){ if (bp->thickness() + my_shelf[i]->curWidth() <= my_shelf[i]->width() && temp_space < (my_shelf[i]->width() - my_shelf[i]->curWidth())){ temp_space = (my_shelf[i]->width()- my_shelf[i]->curWidth()); index = i; } } } if (index != -1){ my_shelf[index]->add(bp); return true; }else return false; } void Bookcase::print(){ printf("Bookcase #%d\n", my_id); for (int i = 0; i < no_shelf; i++){ printf("--- Shelf (%d mm, %d dg) ---\n", my_shelf[i]->width(), my_shelf[i]->capacity()); my_shelf[i]->print(); } }

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  • Hibernate querycount query, dont know how to do

    - by kevinb92
    I want to make an hibernate querycount on a table. I have to values, one string and one boolean HibernateUtil.queryCount(VoteOnPublication.class, new String[] {VOTED_PUBLICATION_ID_FIELD, FOR_OR_AGAINST_FIELD}, **********); my voted_publication_id_field is a string, and my for or against field is a boolean. What should i put in my second part of the query ? I first put : new String[] {publication.getId(),true.toString() but that didnt work. i think the new String is the mistake but i dont know what to put

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