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  • LINQ - IEnumerable.Join on Anonymous Result Set in VB.NET

    - by user337501
    I've long since built a way around this, but it still keeps bugging me... it doesnt help that my grasp of dynamic LINQ queries is still shakey. For the example: Parent has fields (ParentKey, ParentField) Child has fields (ChildKey, ParentKey, ChildField) Pet has fields (PetKey, ChildKey, PetField) Child has a foreign key reference to Parent on Child.ParentKey = Parent.ParentKey Pet has a foreign key reference to Child on Pet.Childkey = Child.ChildKey Simple enough eh? Lets say I have LINQ like this... Dim Q = FROM p in DataContext.Parent _ Join c In DataContext.Child On c.ParentKey = p.ParentKey Consider this a "base query" on which I will perform other filtering actions. Now I want to join the Pet table like this: Q = Q.Join(DataContext.Pet, _ Function(a) a.c.ChildKey, _ Function(p As Pet) p.ChildKey, _ Function(a, p As Pet) p.ChildKey = a.c.ChildKey) The above Join call doesnt work. I sort of understand why it doesnt work, but hopefully it'll show you how I tried to accomplish this task. After all this was done I would have appended a Select to finish the job. Any ideas on a better way to do this? I tried it with the PredicateBuilder with little success. I might not know how to use it right but it felt like it wasnt gonna handle the joining.

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  • Handle exceptions with WPF and MVVM

    - by Jon Cahill
    I am attempting to build an application using WPF and the MVVM pattern. I have my Views being populated from my ViewModel purely through databinding. I want to have a central place to handle all exceptions which occur in my application so I can notify the user and log the error appropriately. I know about Dispatcher.UnhandledException but this does not do the job as exception that occur during databinding are logged to the output windows. Because my View is databound to my ViewModel the entire application is pretty much controlled via databinding so I have no way to log my errors. Is there a way to generically handle the exceptions raised during databinding, without having to put try blocks around all my ViewModel public's? Example View: <Window x:Class="Test.TestView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="TestView" Height="600" Width="800" WindowStartupLocation="CenterScreen"> <Window.Resources> <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" /> </Window.Resources> <StackPanel VerticalAlignment="Center"> <Label Visibility="{Binding DisplayLabel, Converter={StaticResource BooleanToVisibilityConverter}}">My Label</Label> </StackPanel> </Window> The ViewModel: public class TestViewModel { public bool DisplayLabel { get { throw new NotImplementedException(); } } } It is an internal application so I do not want to use Wer as I have seen previously recommended.

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  • MVP, WinForms - how to avoid bloated view, presenter and presentation model

    - by MatteS
    When implementing MVP pattern in winforms I often find bloated view interfaces with too many properties, setters and getters. An easy example with be a view with 3 buttons and 7 textboxes, all having value, enabled and visible properties exposed from the view. Adding validation results for this, and you could easily end up with an interface with 40ish properties. Using the Presentation Model, there'll be a model with the same number of properties aswell. How do you easily sync the view and the presentation model without having bloated presenter logic that pass all the values back and forth? (With that 80ish line presenter code, imagine with the presenter test that mocks the model and view will look like..160ish lines of code just to mock that transfer.) Is there any framework to handle this without resorting to winforms databinding? (you might want to use different views than a winforms view. According to some, this sync should be the presenters job..) Would you use AutoMapper? Maybe im asking the wrong questions, but it seems to me MVP easily gets bloated without some good solution here..

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  • want to add url links to .csv datafeed using python

    - by abs
    Hi all ive looked through the current related questions but have not managed to find anything similar to my needs. Im in the process of creating a affiliate store using zencart - now one of the issues is that zencart is not designed for redirects and affiliate stores but it can be done. I will be changing the store so it acts like a showcase store showing prices. There is a mod called easy populate which allows me to upload datafeeds. This is all well and good however my affiliate link will not be in each product. I can do it manually after uploading the data feed and going to each product and then adding it as an image with a redirect link - However when there are over 500 items its going to be a long repetitive and time consuming job. I have been told that I can add the links to the data feed before uploading it to zencart and this should be done using python. Ive been reading about python for several days now and feel im looking for the wrong things. I was wondering if someone could please advise the simplest way for me to get this done. I hope the question makes sense thanks abs

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  • jQuery DataTables: Problems with POST Server Side JSON output

    - by Tim
    Hello Everyone, I am trying to get my datatable to take a POST JSON output from my server. This is my client side code <script> $(document).ready(function() { $('#example').dataTable( { "bProcessing": true, "bServerSide": true, "sAjaxSource": "http://localhost/staff/jobs/my_jobs", "fnServerData": function ( sSource, aoData, fnCallback ) { $.ajax( { "dataType": 'json', "type": "POST", "url": sSource, "data": aoData, "success": fnCallback } ); } } ); } ); </script> Now I have copied and pasted the server side code found in the DataTables examples found here. When I change my sAjaxSource to view this page the table doesn't move beyond 'processing'. When I view the JSON directly I see this output. {"sEcho": 1, "iTotalRecords": 1, "iTotalDisplayRecords": 1, "aaData": [ ["Trident","First Ever Job"]] } Just for fun I went to the POST server-side example and copied some of the JSON they are using for their example and just PHP echoed it straight out of another page. This is the output of that page. {"sEcho": 1, "iTotalRecords": 1, "iTotalDisplayRecords": 1, "aaData": [ ["Trident","Internet Explorer 4.0"]] } Here is where it gets interesting. The JSON that has been processed by the server fails to work yet the JSON simply echo'd by the same server on a different page does work... yet both are almost identical in outputs. I hope someone can shed some light on this because as the tree said to the lumberjack... I'm stumped. Thanks, Tim

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  • SQL Server Express 2005 Merge Replication using RMO causes Null Reference exception

    - by Craig Shearer
    I'm trying to use RMO to programmatically perform merge synchronization. I've basically copied the SQL Server example code, as follows: // Create a connection to the Subscriber. ServerConnection conn = new ServerConnection(subscriberName); MergePullSubscription subscription; try { // Connect to the Subscriber. conn.Connect(); // Define the pull subscription. subscription = new MergePullSubscription(subscriptionDbName, publisherName, publicationDbName, publicationName, conn, false); // If the pull subscription exists, then start the synchronization. if (subscription.LoadProperties()) { // Check that we have enough metadata to start the agent. if (subscription.PublisherSecurity != null || subscription.DistributorSecurity != null) { subscription.SynchronizationAgent.Synchronize(); } else { throw new ApplicationException("There is insufficent metadata to " + "synchronize the subscription. Recreate the subscription with " + "the agent job or supply the required agent properties at run time."); } } else { // Do something here if the pull subscription does not exist. throw new ApplicationException(String.Format( "A subscription to '{0}' does not exist on {1}", publicationName, subscriberName)); } } catch (Exception ex) { // Implement appropriate error handling here. throw new ApplicationException("The subscription could not be " + "synchronized. Verify that the subscription has " + "been defined correctly.", ex); } finally { conn.Disconnect(); } I've got the server merge publication defined correctly, but when I run the above code, I get a null reference exception on the call to: subscription.SynchronizationAgent.Synchronize(); The stack trace is as follows: at Microsoft.SqlServer.Replication.MergeSynchronizationAgent.StatusEventSinkMethod(String message, Int32 percent, Int32* returnValue) at Test.ConsoleTest.Program.SynchronizePullSubscription() in F:\Visual Studio Projects\Test\source\Test.ConsoleTest\Program.cs:line 124 It seems, from the stack trace, like something to do with the Status event, but I don't have a handler defined, and defining one makes no difference.

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  • "Admin module" taking over [Yii framework]

    - by Flavius
    Hi I have an "admin" module and I want it to serve "dynamic controllers", i.e. to provide a default behaviour for controllers which don't really exist ("virtual controllers"). I've invented a lightweight messaging mechanism for loose communication between modules. I'd like to use it such that when e.g. ?r=admin/users/index is requested, it will call the "virtual controller" "UserController" of AdminModule, which would, by default, use this messaging mechanism to notify the real module "UsersModule" it can answer to the request. I thought about simulating this behaviour in AdminModule::init(), but at that point I have no way of deciding whether the action can be processed by a real controller or not, or at least I don't know how to do it. This is because of the way Yii works: bottom-up, the controller is the one that renders the view AND the application layout (or the module's, if it exists), for example. I don't think the module even has a word to say about handling a given controller+action or not. To recap, I'm looking for a kind of CWebModule::missingController($controllerId,$actionId), just like CController::missingAction($actionId), or a workaround to simulate that. That would possibly be in CWebModule::init() or somewhere where I can find out whether the controller actually exists, in which case it's his job to handle it the $actionID and $controllerID whether the module $controllerID exists (I didn't type it wrong, in r=admin/users/index, "users" is the actual module, as specified in the application's config).

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  • XMPP and Android interaction

    - by Ameya Phadke
    I am currently finding about how to build a XMPP client application on android 2.0.I came across this link which somewhat talks about the same problem.I am a newbie to android dev and thus found the solution given there to be difficult to digest. The system currently has Active MQ as a JMS provider.My job is to fed the messages coming from JMS to the XMPP server and then develope XMPP client on android 2.0 which will listen and show notification to the events pushed by the server. I have following concerns(which might sound foolish) 1.How do I push the events from JMS to the XMPP server which will in turn push them on android? 2.Which XMPP server implementation I should use?I have 3 options * Openfire: Very mature (was a commercial product), but sounds like it's heavyweight, written in Java * Prosody: Lightweight and easy to use, written in Lua. Doesn't have PubSub module yet * Tigase: Also lightweight, written in Java, supports PubSub How do I test and setup these servers.Do I need PubSub funcationality for my app? 3.For XMPP client I came across Smack API given here which is updated like 2 years back.Can anyone please tell me how do I make use of it for Android 2.0.If possible can anyone please mail me latest working Smack jar files. Thanks, Ameya

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  • Advice for last year college graduates

    - by Tomh
    Hey guys, I know there are many "advice" questions around this site. But I wanted to to narrow mine down to last year college students, in my case my last year as Master student in computer science. So far is a list of things I've done during my time in college (which I can recommend others to do aswell): Code a lot I've written several hobby projects, had part time jobs, entered the Imagine cup from Microsoft, took programming extensive courses and did freelance gigs. Read a lot I've bought most top books from the recommended book topics here, to be honest I have not read them all. learn different languages I've tried several languages including Haskell, Java, Python, Ruby, Lisp, Prolog, C#, PHP, JS, AS3 and possibly some more I forgot. Tried to start a blog Joel recommends to learn how to write, I tried starting a couple of blogs to improve upon this, I gave up on all instances after writing about three posts. It was just not my thing... Have a portfolio of launched projects/programs I'm busy with this, have a couple of finished, working projects I worked on to show to people. So this is my last year. Is there anything else you can recommend a last year college student to do before hitting the job market? Personally I'm tempted to spend my time on the following: Practice algorithm design Learn and memorize the usage of the low level API's of your favorite language Polish your portfolio Why? Because those first two will make sure you pass the majority of the interviews, here in Holland (I could be wrong). I rather not spend my time on those first two points, but I have to be realistic and thats just my experience on what kind of questions you'll get when you apply. The third point is my hope that I won't have to answer questions about the amount of standard types in c# for example if they can see I get projects done and launched. But I'm still graduating, so I don't know anything :), and many of you might be hiring grads on a recent base and could tell me and other interested people what you wish that the recent grads you interviewed would have done before they applied.

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  • Intellij Javafx artifact - how do you make it?

    - by Louis Sayers
    I've been trying all day to turn my javafx application into a jar file. I'm using Java 1.7 update 7. Oracle has some information, but it just seems scattered all over the place. Intellij is almost doing the job, but I get the following error: java.lang.NoClassDefFoundError: javafx/application/Application Which seems to say that I need to tell java where the jfxrt.jar is... If I add this jar to my classpath info for the manifest build in intellij - ctrl+shift+alt+s - Artifacts - Output Layout tab - Class Path, then I get another error: Could not find or load main class com.downloadpinterest.code.Main It seems strange to have to include jfxrt.jar in my class path though... I've tried to create an ant script as well, but I feel like IntelliJ is 90% of the way there - and I just need a bit of help to figure out why I need to include jfxrt.jar, and why my Main class isn't being found (I'm guessing I need to add it to the classpath somehow?). Could anyone clue me up as to what is happening? I had a basic gui before which worked fine, but JavaFX seems to be making life complicated!

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  • Dealing with "Coder's Block" (or blank form syndrome)

    - by robsoft
    I know this is the sort of somewhat open-ended question that we're discouraged from asking, but there are lots of open-ended questions around already, and this is something quite relevant to me right now. Do you ever get those times when you're about to start work on a new function/feature of an established system, and you get "coder's block"?. It's like a mental freeze at the sight of a large, completely unpopulated dialog, or an empty code file with just the stub reference headers etc. Do you ever have that 'ulp' moment that seems to sap all your momentum and leave you wide open to distractions (surfing the web for inspiration, checking out 'crackoverflow' etc)? Not that I'd wish it on anyone, but hopefully some of you do, and hopefully some of you can suggest tips or strategies for overcoming the situation, regaining your momentum and becoming productive again. I usually try to reduce what I'm about to do down to absurdly small steps, in the hope that as the job becomes just a series of 'doh' tasks, I'll kickstart myself into working through them. However sometimes, particularly when a deadline is looming, I'll get overwhelmed by this approach as I realise I probably don't have enough time to do all of those tiny steps properly. Those are the darkest moments, (often literally) just before dawn! This situation can be particularly crippling if you mostly work alone, too. Any thoughts or suggestions? Any methods that you found helpful yourself?

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  • Why a Swing app stops my Java servlet ?

    - by Frank
    I have a Swing runnable app which updates messages, then I have a Java servlet that gets messages from Paypal IPN (Instant Payment Notification), when the servlet starts up, in the init(), I starts the Swing runnable app which opens a desktop window, but 30 minutes later an error in the Swing caused the servlet to stop, how can that happen ? Because the runnable is running on it's own thread, servlet started that thread, why an error in that thread will cause the servlet to stop ? public class License_Manager extends JPanel implements Runnable { License_Manager() { Do_GUI(); ... start(); } public static void main(String[] args) { // Schedule a job for the event-dispatching thread : creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } }); } } public class PayPal_Servlet extends HttpServlet { public void init(ServletConfig config) throws ServletException { super.init(config); License_Manager.main(null); } protected void processRequest(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException { } } And besides the error don't even have anything to do with my code, it looks like this : Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 17 = 0 at java.util.Vector.elementAt(Vector.java:427) at javax.swing.DefaultListModel.getElementAt(DefaultListModel.java:70) at javax.swing.plaf.basic.BasicListUI.paintCell(BasicListUI.java:191) at javax.swing.plaf.basic.BasicListUI.paintImpl(BasicListUI.java:304) at javax.swing.plaf.basic.BasicListUI.paint(BasicListUI.java:227) at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143) at javax.swing.JComponent.paintComponent(JComponent.java:763) at javax.swing.JComponent.paint(JComponent.java:1029) at javax.swing.JComponent.paintChildren(JComponent.java:864) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JViewport.paint(JViewport.java:747) at javax.swing.JComponent.paintChildren(JComponent.java:864) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124) at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278) at javax.swing.RepaintManager.paint(RepaintManager.java:1220) at javax.swing.JComponent._paintImmediately(JComponent.java:5072) at javax.swing.JComponent.paintImmediately(JComponent.java:4882) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:803) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714) at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:694) at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

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  • solr JOIN query

    - by Sfairas
    I need to run a JOIN query on a solr index. I've got two xmls that I have indexed, person.xml and subject.xml. Person: <doc> <field name="id">P39126</field> <field name="family">Smith</field> <field name="given">John</field> <field name="subject">S1276</field> <field name="subject">S1312</field> </doc> Subject: <doc> <field name="id">S1276</field> <field name="topic">Abnormalities, Human</field> </doc> I need to only display information from the person doc but each query should match fields in both person and subject. In the case the query matches only the subject doc I need to display all docs from the person that have a matching id. Is this possible to do without running two seperate queries? Something like a JOIN query would do the job. Any help?

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  • Security error accessing Service outside of FlexBuilder

    - by MikeHoss
    I'm very new to Flex and I have what I think it a head-scratcher. I am building a little Flash app that will consume some web services over HTTP. When I am in Flexbuilder and run my app there, it works fine. When I goto to my FlexBuilder project on my OS and double-click on it, it works fine. When I zip up my bin-debug file, I get this error: Security error accessing url faultCode:Channel.Security.Error faultString: 'Security error accessing url' faultDetail:'Destination: DefaultHTTP' So I googled that and got information on about the crossdomain.xml file. Well, I can't put a crossdomain file in the service I am calling, but I can put one somewhere else. So I put the following lines in Flex app: Security.allowDomain("vx1391"); Security.loadPolicyFile("http://vx1391:8080/job/Remote%20FIT%20Runner/ws/trunk/flash-cross-domain.xml"); My cross-domain.xml file is wide-open: &lt;cross-domain-policy&gt; &lt;allow-access-from domain="*"/&gt; </cross-domain-policy> Which I know is bad in a prod enivironment, but right now I just need to get this working locally but outside of FlexBuilder. Anyone want to help out this Flex-noob?

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  • How to keep track of TextPointer in WPF RichTextBox?

    - by Alan Spark
    I'm trying to get my head around the TextPointer class in a WPF RichTextBox. I would like to be able to keep track of them so that I can associate information with areas in the text. I am currently working with a very simple example to try and figure out what is going on. In the PreviewKeyDown event I am storing the caret position and then in the PreviewKeyUp event I am creating a TextRange based on the before and after caret positions. Here is a code sample that illustrates what I am trying to do: // The caret position before typing private TextPointer caretBefore = null; private void rtbTest_PreviewKeyDown(object sender, KeyEventArgs e) { // Store caret position caretBefore = rtbTest.CaretPosition; } private void rtbTest_PreviewKeyUp(object sender, KeyEventArgs e) { // Get text between before and after caret positions TextRange tr = new TextRange(caretBefore, rtbTest.CaretPosition); MessageBox.Show(tr.Text); } The problem is that the text that I get is blank. For example, if I type the character 'a' then I would expect to find the text "a" in the TextRange. Does anyone know what is going wrong? It could be something very simple but I've spent an afternoon getting nowhere. I am trying to embrace the new WPF technology but find that the RichTextBox in particular is so complicated that it makes even doing simple things like this difficult. If anyone has any links that do a good job of explaining the TextPointer, I would appreciate it if you can let me know.

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  • Linq IQueryable variables

    - by kevinw
    Hi i have a function that should return me a string but what is is doing is bringing me back the sql expression that i am using on the database what have i done wrong public static IQueryable XMLtoProcess(string strConnection) { Datalayer.HameserveDataContext db = new HameserveDataContext(strConnection); var xml = from x in db.JobImports where x.Processed == false select new { x.Content }; return xml; } this is the code sample this is what i should be getting back <PMZEDITRI TRI_TXNNO="11127" TRI_TXNSEQ="1" TRI_CODE="600" TRI_SUBTYPE="1" TRI_STATUS="Busy" TRI_CRDATE="2008-02-25T00:00:00.0000000-00:00" TRI_CRTIME="54540" TRI_PRTIME="0" TRI_BATCH="" TRI_REF="" TRI_CPY="main" C1="DEPL" C2="007311856/001" C3="14:55" C4="CUB2201" C5="MR WILLIAM HOGG" C6="CS12085393" C7="CS" C8="Blocked drain" C9="Scheme: CIS Home Rescue edi tests" C10="MR WILLIAM HOGG" C11="74 CROMARTY" C12="OUSTON" C13="CHESTER LE STREET" C14="COUNTY DURHAM" C15="" C16="DH2 1JY" C17="" C18="" C19="" C20="" C21="CIS" C22="0018586965 ||" C23="BD" C24="W/DE/BD" C25="EX-DIRECTORY" C26="" C27="/" C28="CIS Home Rescue" C29="CIS Home Rescue Plus Insd" C30="Homeserve Claims Management Ltd|Upon successful completion of this repair the contractor must submit an itemised and costed Homeserve Claims Management Ltd Job Sheet." N1="79.9000" N2="68.0000" N3="11.9000" N4="0" N5="0" N6="0" D1="2008-02-25T00:00:00.0000000-00:00" T2="EX-DIRECTORY" T4="Blocked drain" TRI_SYSID="9" TRI_RETRY="3" TRI_RETRYTIME="0" /> can anyone help me please

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  • Validate MVC 2 form using Data annotations and Linq-to-SQL, before the model binder kicks in (with D

    - by Stefanvds
    I'm using linq to SQL and MVC2 with data annotations and I'm having some problems on validation of some types. For example: [DisplayName("Geplande sessies")] [PositiefGeheelGetal(ErrorMessage = "Ongeldige ingave. Positief geheel getal verwacht")] public string Proj_GeplandeSessies { get; set; } This is an integer, and I'm validating to get a positive number from the form. public class PositiefGeheelGetalAttribute : RegularExpressionAttribute { public PositiefGeheelGetalAttribute() : base(@"\d{1,7}") { } } Now the problem is that when I write text in the input, I don't get to see THIS error, but I get the errormessage from the modelbinder saying "The value 'Tomorrow' is not valid for Geplande sessies." The code in the controller: [HttpPost] public ActionResult Create(Projecten p) { if (ModelState.IsValid) { _db.Projectens.InsertOnSubmit(p); _db.SubmitChanges(); return RedirectToAction("Index"); } else { SelectList s = new SelectList(_db.Verbonds, "Verb_ID", "Verb_Naam"); ViewData["Verbonden"] = s; } return View(); } What I want is being able to run the Data Annotations before the Model binder, but that sounds pretty much impossible. What I really want is that my self-written error messages show up on the screen. I have the same problem with a DateTime, which i want the users to write in the specific form 'dd/MM/yyyy' and i have a regex for that. but again, by the time the data-annotations do their job, all i get is a DateTime Object, and not the original string. So if the input is not a date, the regex does not even run, cos the data annotations just get a null, cos the model binder couldn't make it to a DateTime. Does anyone have an idea how to make this work?

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  • C# Thread Pool Cross-Thread Communication

    - by Goober
    The Scenario I have a windows forms application containing a MAINFORM with a listbox on it. The MAINFORM also has a THREAD POOL that creates new threads and fires them off to do lots of different bits of processing. Whilst each of these different worker threads is doing its job, I want to report this progress back to my MAINFORM, however, I can't because it requires Cross-Thread communication. Progress So far all of the tutorials etc. that I have seen relating to this topic involve custom(ish) threading implementations, whereas I literally have a fairly basic(ish) standard THREAD POOL implementation. Since I don't want to really modify any of my code (since the application runs like a beast with no quarms) - I'm after some advice as to how I can go about doing this cross-thread communication. ALTERNATIVELY - How to implement a different "LOGTOSCREEN" method altogether (obviously still bearing in mind the cross-thread communication thing). WARNING: I use this website at work, where we are locked down to IE6 only, and the javascript thus fails, meaning I cannot click accept on any answers during work, and thus my acceptance rate is low. I can't do anything about it I'm afraid, sorry. EDIT: I DO NOT HAVE INSTALL RIGHTS ON MY COMPUTER AT WORK. I do have firefox but the proxy at work fails when using this site on firefox. FURTHER EDIT: I DO NOT WANT TO CHANGE MY THREADING IMPLEMENTATION. AT ALL! - Accept to enable cross-thread communication....why would a backgroundworker help here!?

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  • SharePoint 2010: Set Author (CreatedBy) and Editor (ModifiedBy) in SPFile

    - by user1508154
    I am writing a job to migrate documents to SharePoint 2010 and need to set Author and Editor to the original user for the Source System. The way I have done it was dim ImportFile as SPFile dim ImportFolder as SPFolder dim InternalOperatorUser as SPUser ... ImportFile = ImportFolder.Files.Add(ImportFileName, contents, CreatedBy, ModifiedBy, TimeCreated, TimeModified) ... ImportFile.Item("Author") = InternalOperatorUser ImportFile.Item("Editor") = InternalOperatorUser ImportFile.Item.UpdateOverwriteVersion() ImportFile.Item.SystemUpdate(False) ... That is working fine and it is setting Author and Editor on the ListItem level correctly SPFile.Item("Author") SPFile.Item("Editor") BUT (!!!) SharePoint also stores the Editor on the Attachment level which some tools use as display value instead. This value is set to the system user who is running that script SPFile.Versions.Item(1).CreatedBy This field is readonly. Is there a way to modifiy it so I can set InternalOperatorUser to be the Creator for the Attachment as well. SharePoint 2010 Web only uses the values on the ListItem Attribites which are fine but there are thrid party tools that use the ones on the Attahcment level. Using SharePoint Explorer I could confirm that CreatedBy is set to be the system user. Does anyone here know how to change this value as well? Thanks, Wolfgang

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  • Client-Server Networking Between PHP Client and Java Server

    - by Muhammad Yasir
    Hi there, I have a university project which is already 99% completed. It consists of two parts-website (PHP) and desktop (Java). People have their accounts on the website and they wish to query different information regarding their accounts. They send an SMS which is received by desktop application which queries database of website (MySQL) and sends the reply accordingly. This part is working superbly. The problem is that some times website wishes to instruct the desktop application to send a specific SMS to a particular number. Apparently there seems no way other than putting all the load to the DB server... This is how I made it work. Website puts SMS jobs in a specific table. Java application polls this table again and again and if it finds a job, it executes it. Even this part is working correctly but unfortunately it is not acceptable by my university to poll the DB like this. :( The other approach I could think of is to use client-server one. I tried making Java server and its PHP client. So that whenever an SMS is to be sent, the website opens a socket connection to desktop application and sends two strings (cell # and SMS message). Unfortunately I am unable to do this. I was successfully to make a Java server which works fine when connected by a Java client, similarly my PHP client connects correctly to a PHP server, but when I try to cross them, they start hating each other... PHP shows no error but Java gives StreamCorruptedException when it tries to read header of input stream. Could someone please tell what I can try to make PHP client and Java server work together? Or if the said purpose can be achieved by another means, how? Regards, Yasir

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  • Web crawler update strategy

    - by superb
    I want to crawl useful resource (like background picture .. ) from certain websites. It is not a hard job, especially with the help of some wonderful projects like scrapy. The problem here is I not only just want crawl this site ONE TIME. I also want to keep my crawl long running and crawl the updated resource. So I want to know is there any good strategy for a web crawler to get updated pages? Here's a coarse algorithm I've thought of. I divided the crawl process into rounds. Each round URL repository will give crawler a certain number (like , 10000) of URLs to crawl. And then next round. The detailed steps are: crawler add start URLs to URL repository crawler ask URL repository for at most N URL to crawl crawler fetch the URLs, and update certain information in URL repository, like the page content, the fetch time and whether the content has been changed. just go back to step 2 To further specify that, I still need to solve following question: How to decide the "refresh-ness" of a web page, which indicates the probability that this web page has been updated ? Since that is an open question, hopefully it will brought some fruitful discussion here.

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  • MySQL performance - 100Mb ethernet vs 1Gb ethernet

    - by Rob Penridge
    Hi All I've just started a new job and noticed that the analysts computers are connected to the network at 100Mbps. The ODBC queries we run against the MySQL server can easily return 500MB+ and it seems at times when the servers are under high load the DBAs kill low priority jobs as they are taking too long to run. My question is this... How much of this server time is spent executing the request, and how much time is spent returning the data to the client? Could the query speeds be improved by upgrading the network connections to 1Gbps? (Updated for the why): The database in question was built to accomodate reporting needs and contains massive amounts of data. We usually work with subsets of this data at a granular level in external applications such as SAS or Excel, hence the reason for the large amounts of data being transmitted. The queries are not poorly structured - they are very simple and the appropriate joins/indexes etc are being used. I've removed 'query' from the Title of the post as I realised this question is more to do with general MySQL performance rather than query related performance. I was kind of hoping that someone with a Gigabit connection may be able to actually quantify some results for me here by running a query that returns a decent amount of data, then they could limit their connection speed to 100Mb and rerun the same query. Hopefully this could be done in an environment where loads are reasonably stable so as not to skew the results. If ethernet speed can improve the situation I wanted some quantifiable results to help argue my case for upgrading the network connections. Thanks Rob

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  • Structuring projects & dependencies of large winforms applications in C#

    - by Benjol
    UPDATE: This is one of my most-visited questions, and yet I still haven't really found a satisfactory solution for my project. One idea I read in an answer to another question is to create a tool which can build solutions 'on the fly' for projects that you pick from a list. I have yet to try that though. How do you structure a very large application? Multiple smallish projects/assemblies in one big solution? A few big projects? One solution per project? And how do you manage dependencies in the case where you don't have one solution. Note: I'm looking for advice based on experience, not answers you found on Google (I can do that myself). I'm currently working on an application which has upward of 80 dlls, each in its own solution. Managing the dependencies is almost a full time job. There is a custom in-house 'source control' with added functionality for copying dependency dlls all over the place. Seems like a sub-optimum solution to me, but is there a better way? Working on a solution with 80 projects would be pretty rough in practice, I fear. (Context: winforms, not web) EDIT: (If you think this is a different question, leave me a comment) It seems to me that there are interdependencies between: Project/Solution structure for an application Folder/File structure Branch structure for source control (if you use branching) But I have great difficulty separating these out to consider them individually, if that is even possible. I have asked another related question here.

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  • Status of VB6/ Best Desktop Application Language with Native Compliation

    - by Sandeep Jindal
    Hi, I was looking for a Desktop Application Programming Language with one of the biggest constraint: - “ I need to output as native executable”. I explored multiple options: a) Java is not a very good option for desktop programming, but still you can use it. But Java to Exe is a problem. [Only GCJ and Excelsior-Jet provides this][1]. b) .Net platform does not support native compilation. Only very few expensive tools are available which can do the job. c) Python is not an option for native compilation. Right? d) VB6 is the option I am left with. From the above list, if I am correct, VB6 is the only and probably the best option I have. But VB6 itself has issues like: a) It is no more under development since 2003. b) There are questions on support of VB6 IDE with Vista. Thus my questions are: a) From the list of programming language options, do you want to add any more? b) If VB6 is good/best option, looking at its development status, would you suggest using VB6 in this era? Regards Sandeep Jindal

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  • mod_wsgi for multiple trac projects [Windows]

    - by fampinheiro
    Hello, I have a system with windows server 2008, Apache httpd 2.2 and trac 0.11 i'm using mod_wsgi so the apache server do the web server job. Integration with Trac after read this site i found that the most suitable solution was the following (i have in my httpd.conf the line Include conf/extra/httpd-trac.conf) httpd-trac.conf LoadModule wsgi_module modules/mod_wsgi.so WSGIDaemonProcess tracs processes=3 threads=25 maximum-requests=1000 RewriteEngine On RewriteCond %{REQUEST_URI} ^/trac/([^/]+) RewriteCond c:\Project\Services\Trac\%1\conf\trac.ini !-f RewriteRule . - [F] RewriteCond %{REQUEST_URI} ^/trac/([^/]+) RewriteRule . - [E=trac.env_path:c:\Project\Services\Trac\%1] WSGIScriptAliasMatch ^/trac/([^/]+) c:\Project\Trac\trac.wsgi <Directory c:\Project\Trac> WSGIProcessGroup tracs WSGIApplicationGroup %{GLOBAL} Order deny,allow Allow from all </Directory> the problem i encouter is the following: C:\Project\Apache\binhttpd.exe -k start Syntax error on line 3 of C:/Project/Apache/conf/extra/httpd-trac.conf: Invalid command 'WSGIDaemonProcess', perhaps misspelled or defined by a module not included in the server configuration The objective: My objective is to have multiple trac projects with diferente authentication information. If you have other solution than this please tell me =) Thank you for your help.

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