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  • Replacing build.xml with Build.java - using Java and the Ant libraries as a build system

    - by Dean Schulze
    I've grown disillusioned with Groovy based alternatives to Ant. AntBuilder doesn't work from within Eclipse, the Groovy plugin for Eclipse is disappointing, and Gradle just isn't ready yet. The Ant documentation has a section titled "Using Ant Tasks Outside of Ant" which gives a teaser for how to use the Ant libraries from Java code. There's another example here: http://www.mail-archive.com/[email protected]/msg16310.html In theory it seems simple enough to replace build.xml with Build.java. The Ant documentation hints at some undocumented dependencies that I'll have to discover (undocumented from the point of view of using Ant from within Java). Given the level of disappointment with Ant scripting, I wonder why this hasn't been done before. Perhaps it has and isn't a good build system. Has anyone tried writing build files in Java using the Ant libraries?

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  • Node.js REST framework?

    - by Geuis
    Just got node.js running on an ubuntu server instance. Got a couple of simple server apps running. Does anyone know of any REST frameworks that have been built or are in development?

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  • Python ImportError when executing 'import.py', but not when executing 'python import.py'

    - by Martin Del Vecchio
    I am running Cygwin Python version 2.5.2. I have a three-line source file, called import.py: #!/usr/bin/python import xml.etree.ElementTree as ET print "Success!" When I execute "python import.py", it works: C:\Temp>python import.py Success! When I run the python interpreter and type the commands, it works: C:\Temp>python Python 2.5.2 (r252:60911, Dec 2 2008, 09:26:14) [GCC 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)] on cygwin Type "help", "copyright", "credits" or "license" for more information. >>> #!/usr/bin/python ... import xml.etree.ElementTree as ET >>> print "Success!" Success! >>> But when I execute "import.py', it does not work: C:\Temp>which python /usr/bin/python C:\Temp>import.py Traceback (most recent call last): File "C:\Temp\import.py", line 2, in ? import xml.etree.ElementTree as ET ImportError: No module named etree.ElementTree When I remove the first line (#!/usr/bin/python), I get the same error. I need that line in there, though, for when this script runs on Linux. And it works fine on Linux. Any ideas? Thanks.

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  • How to marshal int* in C#?

    - by MartyIX
    Hi, I would like to call this method in unmanaged library: void __stdcall GetConstraints( unsigned int* puiMaxWidth, unsigned int* puiMaxHeight, unsigned int* puiMaxBoxes ); My solution: Delegate definition: [UnmanagedFunctionPointer(CallingConvention.StdCall)] private delegate void GetConstraintsDel(UIntPtr puiMaxWidth, UIntPtr puiMaxHeight, UIntPtr puiMaxBoxes); The call of the method: // PLUGIN NAME GetConstraintsDel getConstraints = (GetConstraintsDel)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetConstraintsDel)); uint maxWidth, maxHeight, maxBoxes; unsafe { UIntPtr a = new UIntPtr(&maxWidth); UIntPtr b = new UIntPtr(&maxHeight); UIntPtr c = new UIntPtr(&maxBoxes); getConstraints(a, b, c); } It works but I have to allow "unsafe" flag. Is there a solution without unsafe code? Or is this solution ok? I don't quite understand the implications of setting the project with unsafe flag. Thanks for help!

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  • WPF Datagrid -DataGridTemplateColumn tab focus issue

    I am using Microsoft WPF datagrid. I have noticed a strange behavior with WPF datagrid DataGridTemplateColumn. When you use the templateColumn in the grid and the template column contains some controls when you tab from the previous column the focus is not automatically given to the first element declared in the template column. The foucs is initally set on the border of the template column and when we tab of once agin the focus goes to the first column. Any workaround for this issue. How can i set the focus to go the first element in the template column of the datagrid when i tab off.

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  • JSF - Unhide jsf component when clicking another component.

    - by Ben
    Hi, I'm trying to have a button that brings up an upload dialog. The way i'm trying to achieve this is similar to this: <h:outputText value="Click Me" id="testit"> <a4j:support reRender="hideme" event="onclick" action="#{actions.switchTestRendered}"/> </h:outputText> <h:outputText id="hideme" value="back" rendered="#{actions.testRendered}"/> With code in the backing bean: private boolean testRendered = false; public String switchTestRendered(){ setTestRendered(!isTestRendered()); System.out.println("Current Status:"+isTestRendered()); return "success"; } public void setTestRendered(boolean testRendered) { this.testRendered = testRendered; } public boolean isTestRendered() { return testRendered; } When I press the 'click me' label I can see that the switchTestRendered is run but the 'hideme' component does not reveal. Any suggestions? Thanks!

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  • Android ListView TextSize

    - by zaid
    my listview.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout android:id="@+id/RelativeLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:myapp="http://schemas.android.com/apk/res/zaid.quotes.dlama"> <ListView android:id="@+id/ListView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_marginBottom="50dp" android:paddingTop="50dp"></ListView> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/Back" android:layout_alignParentBottom="true" android:text="Go Back"></Button> <LinearLayout android:layout_width="wrap_content" android:id="@+id/LinearLayout01" android:layout_height="wrap_content" android:layout_alignParentTop="true"> <com.admob.android.ads.AdView android:id="@+id/ad" android:layout_width="fill_parent" android:layout_height="wrap_content" myapp:backgroundColor="#000000" myapp:primaryTextColor="#FFFFFF" myapp:secondaryTextColor="#CCCCCC" android:layout_alignParentTop="true" /> </LinearLayout> </RelativeLayout> the current size of the text in the listview is large. and i cant seem to figure out how to change the text size.

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  • Visual Studio 2010 and javascript debugging in external javascript files (embedded and minified).

    - by OKB
    Hi, The asp.net web application I'm working on is written in asp.net 3.5, the web app solution is upgraded from VS 2008 (don't know if that matter). The solution had javascript in the aspx files before I moved the javascript to external files. Now what I have done is to set all the javascript files to be embedded resource (except the jquery.js file) and I want to minify them when building for release by using the MS Ajax Minifier. I want to use the minified javascript files when I'm in the RELEASE mode and when I'm in DEBUG mode I want to use the "normal" versions. My problem now is that I'm unable to debug the javascript code in debug mode. When I set a break point a javascript function, VS is not breaking at all when the function is executed. I have added this entry in my web.config: <system.web> <compilation defaultLanguage="c#" debug="true" /> </system.web> Here how I register the jquery in an aspx-file: <asp:ScriptManagerProxy ID="ScriptManagerProxy1" runat="server"> <Scripts> <asp:ScriptReference Path="~/Javascript/jquery.js"/> </Scripts> </asp:ScriptManagerProxy> External javascript registration in the code-behind: #if DEBUG [assembly: WebResource("braArkivWeb.Javascript.jquery.js", "text/javascript")] [assembly: WebResource(braArkivWeb.ArkivdelSearch.JavaScriptResource, "text/javascript")] #else [assembly: WebResource("braArkivWeb.Javascript.jquery.min.js", "text/javascript")] [assembly: WebResource(braArkivWeb.ArkivdelSearch.JavaScriptMinResource, "text/javascript")] #endif public partial class ArkivdelSearch : Page { public const string JavaScriptResource = "braArkivWeb.ArkivdelSearch.js"; public const string JavaScriptMinResource = "braArkivWeb.ArkivdelSearch.min.js"; protected void Page_Init(object sender, EventArgs e) { InitPageClientScript(); } private void InitPageClientScript() { #if DEBUG this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), "braArkivWeb.Javascript.jquery.js"); this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), JavaScriptResource); #else this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), "braArkivWeb.Javascript.jquery.min.js"); this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), JavaScriptMinResource); #endif StringBuilder sb = new StringBuilder(); Page.ClientScript.RegisterStartupScript(typeof(ArkivdelSearch), "initArkivdelSearch", sb.ToString(), true); } } In the project file I have added this code to minify the javascripts: <!-- Minify all JavaScript files that were embedded as resources --> <UsingTask TaskName="AjaxMin" AssemblyFile="$(MSBuildProjectDirectory)\..\..\SharedLib\AjaxMinTask.dll" /> <PropertyGroup> <ResGenDependsOn> MinifyJavaScript; $(ResGenDependsOn) </ResGenDependsOn> </PropertyGroup> <Target Name="MinifyJavaScript" Condition=" '$(ConfigurationName)'=='Release' "> <Copy SourceFiles="@(EmbeddedResource)" DestinationFolder="$(IntermediateOutputPath)" Condition="'%(Extension)'=='.js'"> <Output TaskParameter="DestinationFiles" ItemName="EmbeddedJavaScriptResource" /> </Copy> <AjaxMin JsSourceFiles="@(EmbeddedJavaScriptResource)" JsSourceExtensionPattern="\.js$" JsTargetExtension=".js" /> <ItemGroup> <EmbeddedResource Remove="@(EmbeddedResource)" Condition="'%(Extension)'=='.js'" /> <EmbeddedResource Include="@(EmbeddedJavaScriptResource)" /> <FileWrites Include="@(EmbeddedJavaScriptResource)" /> </ItemGroup> </Target> Do you see what I'm doing wrong? Or what I'm missing in order to be able to debug my javascript code? Best Regards, OKB

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  • ASP.NET MVC File Upload Error - "The input is not a valid Base-64 string"

    - by Justin
    Hey all, I'm trying to add a file upload control to my ASP.NET MVC 2 form but after I select a jpg and click Save, it gives the following error: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters. Here's the view: <% using (Html.BeginForm("Save", "Developers", FormMethod.Post, new {enctype = "multipart/form-data"})) { %> <%: Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <div class="editor-label"> Login Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.LoginName) %> <%: Html.ValidationMessageFor(model => model.LoginName) %> </div> <div class="editor-label"> Password </div> <div class="editor-field"> <%: Html.Password("Password") %> <%: Html.ValidationMessageFor(model => model.Password) %> </div> <div class="editor-label"> First Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.FirstName) %> <%: Html.ValidationMessageFor(model => model.FirstName) %> </div> <div class="editor-label"> Last Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.LastName) %> <%: Html.ValidationMessageFor(model => model.LastName) %> </div> <div class="editor-label"> Photo </div> <div class="editor-field"> <input id="Photo" name="Photo" type="file" /> </div> <p> <%: Html.Hidden("DeveloperID") %> <%: Html.Hidden("CreateDate") %> <input type="submit" value="Save" /> </p> </fieldset> <% } %> And the controller: //POST: /Secure/Developers/Save/ [AcceptVerbs(HttpVerbs.Post)] public ActionResult Save(Developer developer) { //get profile photo. var upload = Request.Files["Photo"]; if (upload.ContentLength > 0) { string savedFileName = Path.Combine( ConfigurationManager.AppSettings["FileUploadDirectory"], "Developer_" + developer.FirstName + "_" + developer.LastName + ".jpg"); upload.SaveAs(savedFileName); } developer.UpdateDate = DateTime.Now; if (developer.DeveloperID == 0) {//inserting new developer. DataContext.DeveloperData.Insert(developer); } else {//attaching existing developer. DataContext.DeveloperData.Attach(developer); } //save changes. DataContext.SaveChanges(); //redirect to developer list. return RedirectToAction("Index"); } Thanks, Justin

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  • WinDbg .for loop

    - by Scott
    I am having trouble getting the WinDbg .for command to work. I would like to dump an array of c++ structs. ?? gpTranData->mpApplCodes[0] works for a single entry but I would like to loop through n of these. .for ($t0=0;$t0<(gpTranData->miApplCodeCount);$t0++){ ?? &gpTranData->mpApplCodes[$t0] } sound logical to me but I get Numeric expression missing from '>miApplCodeCount);$t0++){ ?? &gpTranData->m_pApplCodes[$t0] }' Any ideas? Scott

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  • jQuery UI Dialog Error: b("<div></div>").addClass("ui-widget-overlay") is undefined

    - by Mithun
    I have the below code for my a Dialog box for a which contains a dropdown field KPMS.ServiceRequests.Status = { showOptions : function(requestId, userId, requestType) { var url = BASE_URL+'service_requests/status_options/'; $("#dialog-modal").dialog("destroy"); $("#dialog-modal").load(url, {"request_id": requestId, "user_id": userId, "request_type":requestType}).dialog( { modal: true, title: "Update Status", buttons: { Cancel : function() { $(this).dialog('close'); }, Update: function() { alert(1); } } } ); } } There is an anchor tag to populate the Dialog <a onclick="KPMS.ServiceRequests.Status.showOptions(9, 11, 'SR'); return false;" title="Update status" href="http://localhost/kitco/pms/#9"><img alt="[E]" title="Update" src="http://localhost/kitco/pms/images/edit.png"></a> My problem is When i click the link for the first time the dialog box is populating properly. Then I closed the dialog using the cancel button, then again clicked the link to open the dialog and closed it. For the third click on the link I'm getting the below Javascript error, and Dialog box is not opened Error: b("<div></div>").addClass("ui-widget-overlay") is undefined Source File: http://localhost/kitco/pms/js/jquery-ui-1.8rc3.custom.min.js Line: 199 How to solve this problem?

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  • Having the output of a Console App in Visual Studio instead of the Console

    - by devoured elysium
    When doing "Console" apps in Java with Eclipse, I see the output being put in a text box on the IDE itself, instead of having a Console popping up like in Visual Studio. This comes in handy, as even after the program has exited, I can still make good use of the text that was written in it, as it doesn't get erased until I run it again. Is it possible to achieve anything like that with Visual Studio? I know that instead of doing System.Console.WriteLine(str); I can do System.Diagnostics.Debug.WriteLine(str); but it is not quite the same thing, as you get a lot of "junk" in the Output window, as all the loaded symbols and such. Even better, is it possible to have everything done in the IDE itself, when you run your app, instead of having the Console running? Thanks

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  • iTextSharp 5.0 Footer is not displaying

    - by Rick Make
    I am trying to create a simple footer that would display on the bottom of each page of the pdf document. I created a class that inherits from PdfPageEventHelper and it is set properly because the OnEndPage() method is called. But my temporary footer is not displaying. Is there something wrong that I am doing in my OnEndPage() method: public override void OnEndPage(PdfWriter writer, Document document) { base.OnEndPage(writer, document); int pageN = writer.PageNumber; String text = "Page " + pageN + " of "; float len = bf.GetWidthPoint(text, 8); Rectangle pageSize = document.PageSize; cb.SetRGBColorFill(100, 100, 100); cb.BeginText(); cb.SetFontAndSize(bf, 8); cb.SetTextMatrix(pageSize.GetLeft(40), pageSize.GetBottom(30)); cb.ShowText(text); cb.EndText(); cb.AddTemplate(template, pageSize.GetLeft(40) + len, pageSize.GetBottom(30)); cb.BeginText(); cb.SetFontAndSize(bf, 8); cb.ShowTextAligned(PdfContentByte.ALIGN_RIGHT, "Printed On " + PrintTime.ToString(), pageSize.GetRight(40), pageSize.GetBottom(30), 0); cb.EndText(); }

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  • MSChart on ASP.NET MVC 2

    - by Adron
    I upgraded my MVC Application using MSChart to MVC 2 and have ended up with broken image links for the charts. See my blog entry here: http://blog.adronbhall.com/post/2010/04/12/MVC-2-Breaks-my-Charts.aspx I get no build errors anymore, and have completed the following steps. First, I setup the following web.config lines. add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting" assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" and add path="ChartImg.axd" verb="GET,HEAD" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" (NOTE: I took the chevrons off so the lines would appear) The next thing I did was create this page with the following code. Which should, according to it working in MVC<1, showed 4 charts. <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %> <%@ Import Namespace="Scorecard.Views" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> Scorecard </asp:Content> <asp:Content ID="applicationTitle" ContentPlaceHolderID="ContentPlaceHolderApplicationName" runat="server"> <%=Html.Encode(ViewData["ApplicationTitle"])%> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <form id="form1" runat="server"> <h2> Web Analysis Scorecard </h2> <table> <tr> <td> <% ChartHelper chartHelper = new ChartHelper("Top Countries", (double[])ViewData["TopCountryCounts"], (string[])ViewData["TopCountries"], SeriesChartType.Pie); Chart chartPieTwo = chartHelper.ResultingChart; // Explode data point with label "USA" chartPieTwo.Series["DefaultSeries"].Points[3]["Exploded"] = "true"; chartHelper.RenderChart(this); %> </td> <td> <% chartHelper = new ChartHelper("View Cart Trend", (double[])ViewData["LineValues"], (string[])ViewData["TopEngines"], SeriesChartType.Line); chartHelper.RenderChart(this); %> </td> </tr> <tr> <td> <% chartHelper = new ChartHelper("Yesterday's Page Views", (double[])ViewData["ColumnStats"], (string[])ViewData["ColumnStatHeaders"], SeriesChartType.Column); chartHelper.RenderChart(this); %> </td> <td> <% double[] theValues = (double[])ViewData["ColumnStats"]; double[] newValues = new double[] { 0, 0, 0, 0 }; int count = 0; int daysInMonth = DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month); foreach (double d in theValues) { newValues[count] += d * daysInMonth; count++; } chartHelper = new ChartHelper("Current Month Page Views", newValues, (string[])ViewData["ColumnStatHeaders"], SeriesChartType.Bar); chartHelper.RenderChart(this); %> </td> </tr> </table> </form>

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  • Android Home Screen Widget (icon, label - style)

    - by dmulligan
    I'm trying to create an icon/widget (1 cell x 1 cell) that can be placed on the home screen of android. The widget will look and act exactly like the other standard shortcuts in android. It will have an icon and under that a label, it will be selectable with the trackball (highlight able) it will be highlighted when it is selected/clicked. How do I go about creating this home screen widget? Do I have to create the widget myself using code/xml or is there some standard xml, style, theme, code that I can use to ensure that the widget will have the same style/theme as the other home screen widgets? I currently have the following res/drawable/corners.xml <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/Corners"> <stroke android:width="4dp" android:color="#CC222222" /> <padding android:left="4dp" android:top="1dp" android:right="4dp" android:bottom="1dp" /> <corners android:radius="4dp" /> </shape> res/layout/widget.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/Widget" android:layout_width="72dip" android:layout_height="72dip" android:orientation="vertical" android:focusable="true" android:gravity="center_horizontal" style="@android:style/Widget" > <ImageView android:id="@+id/WidgetIcon" android:src="@drawable/icon" android:layout_width="fill_parent" android:layout_height="50dip" android:paddingTop="3dip" android:gravity="center" /> <TextView android:id="@+id/WidgetLabel" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="@string/app_name" android:textSize="15dip" android:background="@drawable/corners" /> </LinearLayout> The resulting widget looks some what close, but its not selectable, it doesn't get highlighted when clicked and the label isn't exactly in the correct location or the correct style. Any ideas, if there is a correct way to do this, or should I just keep working away on the above until I am closer?

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  • Change font size macvim?

    - by Alex
    Hi there, I'm using macvim and I love it. I also happen to really like the default font. My question is: How do I change the font size in my .gvimrc? I want it to be bigger, without changing the font from the default. All the examples I've seen specify a font then a ':' then the size. So how do I just change the size not the font itself? Thanks!

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  • WPF Orthographic Camera. Region of view

    - by Evgeny
    Hello. I added Orthographic Camera to my project. I want to show my chart on screen proportional. For example height is 4 and width 4 (region from -2 to 2). I set width to 4 and it perfectly fit my square in widht. but i have problem with height. The chart top and bottom is always out of screen space. Why this happens and how to set to camera view the same width and height ? Camera position: 0,0,5 Viewport have size: 571.5x497 On image we can see on vertical axis points from 2 to -2 but on vertical much more. How to make them same? Image: http://i076.radikal.ru/1003/96/273c74ed9add.png Sorry for my English.

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  • Javascript Uncaught Error: INDEX_SIZE_ERR: DOM Exception 1

    - by Travis
    The site is: http://www.clubloc.com/ And it works in firefox but not in google chrome. Internet explorer also has problems but thats pretty much a given when using HTML5 Canvas. Anyways I'm trying to figure out why it throws the error: Uncaught Error: INDEX_SIZE_ERR: DOM Exception 1 When the arrays clearly have all those elements, I even logged their size and it says 100. Any help/guidance would be greatly appreciated.

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  • How to get a folder from CAML Query?

    - by Vijay
    I have a List which has a two level hierarchy of folders. Something like this: List Folder_1 SubFolder_1 Item 1_1_1 Item 1_1_2 SubFolder_2 Item 1_2_1 Item 1_2_2 Item 1_2_3 Folder_2 SubFolder_1 Item 2_1_1 Item 2_1_2 Item 2_1_3 SubFolder_2 Item 2_2_1 Item 2_2_2 I want to add a list item to a folder depending on some criteria. I don't want to loop through all folders as the number of folders is more. So, I thought of running a CAML query to get the folder. Below CAML Query gives me all folders in the list: <Where> <Eq> <FieldRef Name='FSObjType' /> <Value Type='int'>0</Value> </Eq> </Where> How can I add another condition to the above query so that I can get a specific folder when I know the exact folder name?

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  • Smarty: Display a random sentence from array

    - by Martind
    I have a smarty template, that I want to display a random sentence on each reload. I could do it with this: in php file: $sentences = array('Hello you', 'Hi mate', 'Welcome'); shuffle($sentences); $smarty->assign('sentence', $sentences[0]); in template file: <h1>{$sentence}</h1> Is it possible to do all this in the template instead? Since this isn't exactly programming logic but more a presentation logic, i would like it all in the template like so: <h1>{'Hello you', 'Hi mate', 'Welcome'| selectRandom }</h1> Something like that?

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  • OAuth in Rails - google, twitter, facebook, connect for login like stackoverflow login

    - by Sam
    Rails has the rest autho plugin which works well but is there a solution for incorporating twitter, facebook, google, yahoo, etc... Seems like each on has its own plugin and demands and mixing them is going to be a mess. This is for logging in users like how Stackoverflow gets things done not for using the robust features of the APIs. What I want to do is do what stackoverflow did for login but in rails.

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  • Fixing predicated NSFetchedResultsController/NSFetchRequest performance with SQLite backend?

    - by Jaanus
    I have a series of NSFetchedResultsControllers powering some table views, and their performance on device was abysmal, on the order of seconds. Since it all runs on main thread, it's blocking my app at startup, which is not great. I investigated and turns out the predicate is the problem: NSPredicate *somePredicate = [NSPredicate predicateWithFormat:@"ANY somethings == %@", something]; [fetchRequest setPredicate:somePredicate]; I.e the fetch entity, call it "things", has a many-to-many relation with entity "something". This predicate is a filter that limits the results to only things that have a relation with a particular "something". When I removed the predicate for testing, fetch time (the initial performFetch: call) dropped (for some extreme cases) from 4 seconds to around 100ms or less, which is acceptable. I am troubled by this, though, as it negates a lot of the benefit I was hoping to gain with Core Data and NSFRC, which otherwise seems like a powerful tool. So, my question is, how can I optimize this performance? Am I using the predicate wrong? Should I modify the model/schema somehow? And what other ways there are to fix this? Is this kind of degraded performance to be expected? (There are on the order of hundreds of <1KB objects.) EDIT WITH DETAILS: Here's the code: [fetchRequest setFetchLimit:200]; NSLog(@"before fetch"); BOOL success = [frc performFetch:&error]; if (!success) { NSLog(@"Fetch request error: %@", error); } NSLog(@"after fetch"); Updated logs (previously, I had some application inefficiencies degrading the performance here. These are the updated logs that should be as close to optimal as you can get under my current environment): 2010-02-05 12:45:22.138 Special Ppl[429:207] before fetch 2010-02-05 12:45:22.144 Special Ppl[429:207] CoreData: sql: SELECT DISTINCT 0, t0.Z_PK, t0.Z_OPT, <model fields> FROM ZTHING t0 LEFT OUTER JOIN Z_1THINGS t1 ON t0.Z_PK = t1.Z_2THINGS WHERE t1.Z_1SOMETHINGS = ? ORDER BY t0.ZID DESC LIMIT 200 2010-02-05 12:45:22.663 Special Ppl[429:207] CoreData: annotation: sql connection fetch time: 0.5094s 2010-02-05 12:45:22.668 Special Ppl[429:207] CoreData: annotation: total fetch execution time: 0.5240s for 198 rows. 2010-02-05 12:45:22.706 Special Ppl[429:207] after fetch If I do the same fetch without predicate (by commenting out the two lines in the beginning of the question): 2010-02-05 12:44:10.398 Special Ppl[414:207] before fetch 2010-02-05 12:44:10.405 Special Ppl[414:207] CoreData: sql: SELECT 0, t0.Z_PK, t0.Z_OPT, <model fields> FROM ZTHING t0 ORDER BY t0.ZID DESC LIMIT 200 2010-02-05 12:44:10.426 Special Ppl[414:207] CoreData: annotation: sql connection fetch time: 0.0125s 2010-02-05 12:44:10.431 Special Ppl[414:207] CoreData: annotation: total fetch execution time: 0.0262s for 200 rows. 2010-02-05 12:44:10.457 Special Ppl[414:207] after fetch 20-fold difference in times. 500ms is not that great, and there does not seem to be a way to do it in background thread or otherwise optimize that I can think of. (Apart from going to a binary store where this becomes a non-issue, so I might do that. Binary store performance is consistently ~100ms for the above 200-object predicated query.) (I nested another question here previously, which I now moved away).

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  • Application Specific Paths for DLL Loading when DLL is loaded dynamically

    - by MartinHT
    Hi: I am building a program that uses a very simple plugin system. This is the code I'm using to load the possible plugins: public interface IPlugin { string Name { get; } string Description { get; } bool Execute(System.Windows.Forms.IWin32Window parent); } private void loadPlugins() { int idx = 0; string[] pluginFolders = getPluginFolders(); Array.ForEach(pluginFolders, folder => { string[] pluginFiles = getPluginFiles(folder); Array.ForEach(pluginFiles, file => { try { System.Reflection.Assembly assembly = System.Reflection.Assembly.LoadFile(file); Array.ForEach(assembly.GetTypes(), type => { if(type.GetInterface("PluginExecutor.IPlugin") != null) { IPlugin plugin = assembly.CreateInstance(type.ToString()) as IPlugin; if(plugin != null) lista.Add(new PluginItem(plugin.Name, plugin.Description, file, plugin)); } }); } catch(Exception) { } }); }); } When the user selects a particular plugin from the list, I launch the plugin's Execute method. So far, so good! As you can see the plugins are loaded from a folder, and within the folder are several dll's that are needed but the plugin. My problem is that I can't get the plugin to 'see' the dlls, it just searches the launching applications startup folder, but not the folder where the plugin was loaded from. I have tried several methods: 1. Changing the Current Directory to the plugins folder. 2. Using an inter-op call to SetDllDirectory 3. Adding an entry in the registry to point to a folder where I want it to look (see code below) None of these methods work. What am I missing? As I load the dll plugin dynamically, it does not seem to obey any of the above mentioned methods. What else can I try? Regards, MartinH. //HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths Microsoft.Win32.RegistryKey appPaths = Microsoft.Win32.Registry.LocalMachine.CreateSubKey( string.Format( @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\{0}", System.IO.Path.GetFileName(Application.ExecutablePath)), Microsoft.Win32.RegistryKeyPermissionCheck.ReadWriteSubTree); appPaths.SetValue(string.Empty, Application.ExecutablePath); object path = appPaths.GetValue("Path"); if(path == null) appPaths.SetValue("Path", System.IO.Path.GetDirectoryName(pluginItem.FileName)); else { string strPath = string.Format("{0};{1}", path, System.IO.Path.GetDirectoryName(pluginItem.FileName)); appPaths.SetValue("Path", strPath); } appPaths.Flush();

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