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  • Hooking into comment_text() to add surrounding tag

    - by Stefan Glase
    Trying to hook into the function comment_text() supplied by Wordpress API to wrap the output of every comment into a <div>...</div> container I am running into the following problem: Without my added filter the output of comment_text() looks like this: <p>Hello User!</p> <p>Thank you for your comment.</p> <p>Stefan</p> Thats fine but as I said I would like to have it wrapped into a <div class="comment-text">...</div>. As far as I know the correct way doing this would be in adding a filter to functions.php of my theme and so I did: function stefan_wrap_comment_text($content) { return "<div class=\"comment-text\">". $content ."</div>"; } add_filter('comment_text', 'stefan_wrap_comment_text'); As I can see from the output the given filter works but it has a negative sideeffect to the first paragraph of the content as you can see in the following example. The first paragraph should be <p>Hello User!</p> but looks like this: Hello User!. <div class="comment-text"> Hello User! <p>Thank you for your comment.</p> <p>Stefan</p> </div> Any ideas or hints what I am doing wrong?

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  • Firefox -- Dynamically embedding <svg> element in SVG

    - by zourtney
    I am trying dynamically to append an <svg> element within an existing SVG island on an XHTML page (Firefox 3.6.3). Done manually, this works as expected: <svg xmlns="http://www.w3.org/2000/svg"> <svg xmlns="http://www.w3.org/2000/svg"> ... </svg> </svg> However, if you dynamically add this element using JavaScript, the browser crashes. Simple example: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:svg="http://www.w3.org/2000/svg"> <head> <title>SVG island example</title> <script type="text/javascript"><![CDATA[ function crash( ) { svgs = document.getElementsByTagNameNS( "http://www.w3.org/2000/svg", "svg" ); for ( var i = 0; i < svgs.length; i++ ) { var e = document.createElementNS( "http://www.w3.org/2000/svg", "svg" ); svgs[i].appendChild( e ); } } ]]></script> </head> <body> <svg id="mySVG" xmlns="http://www.w3.org/2000/svg"> </svg> <button onclick="crash()">Crash Firefox</button> </body> </html> Interestingly, if I do a getElementById, it works fine. Interesting, but not particularly helpful in my situation since I'm storing pointers to SVGDocuments. Example: function doesntCrash( ) { var svg = document.getElementById( "mySVG" ); var e = document.createElementNS( "http://www.w3.org/2000/svg", "svg" ); svg.appendChild( e ); } As far as I can tell, this is a Firefox bug. Does anyone have any insight into this matter?

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  • How do I eliminate Error 3002?

    - by Andrew
    Say I have the following table definitions in SQL Server 2008: CREATE TABLE Person (PersonId INT IDENTITY NOT NULL PRIMARY KEY, Name VARCHAR(50) NOT NULL, ManyMoreIrrelevantColumns VARCHAR(MAX) NOT NULL) CREATE TABLE Model (ModelId INT IDENTITY NOT NULL PRIMARY KEY, ModelName VARCHAR(50) NOT NULL, Description VARCHAR(200) NULL) CREATE TABLE ModelScore (ModelId INT NOT NULL REFERENCES Model (ModelId), Score INT NOT NULL, Definition VARCHAR(100) NULL, PRIMARY KEY (ModelId, Score)) CREATE TABLE PersonModelScore (PersonId INT NOT NULL REFERENCES Person (PersonId), ModelId INT NOT NULL, Score INT NOT NULL, PRIMARY KEY (PersonId, ModelId), FOREIGN KEY (ModelId, Score) REFERENCES ModelScore (ModelId, Score)) The idea here is that each Person may have only one ModelScore per Model, but each Person may have a score for any number of defined Models. As far as I can tell, this SQL should enforce these constraints naturally. The ModelScore has a particular "meaning," which is contained in the Definition. Nothing earth-shattering there. Now, I try translating this into Entity Framework using the designer. After updating the model from the database and doing some editing, I have a Person object, a Model object, and a ModelScore object. PersonModelScore, being a join table, is not an object but rather is included as an association with some other name (let's say ModelScorePersonAssociation). The mapping details for the association are as follows: - Association - Maps to PersonModelScore - ModelScore ModelId : Int32 <=> ModelId : int Score : Int32 <=> Score : int - Person PersonId : Int32 <=> PersonId : int On the right-hand side, the ModelId and PersonId values have primary key symbols, but the Score value does not. Upon compilation, I get: Error 3002: Problem in Mapping Fragment starting at line 5190: Potential runtime violation of table PersonModelScore's keys (PersonModelScore.ModelId, PersonModelScore.PersonId): Columns (PersonModelScore.PersonId, PersonModelScore.ModelId) are mapped to EntitySet ModelScorePersonAssociation's properties (ModelScorePersonAssociation.Person.PersonId, ModelScorePersonAssociation.ModelScore.ModelId) on the conceptual side but they do not form the EntitySet's key properties (ModelScorePersonAssociation.ModelScore.ModelId, ModelScorePersonAssociation.ModelScore.Score, ModelScorePersonAssociation.Person.PersonId). What have I done wrong in the designer or otherwise, and how can I fix the error? Many thanks!

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  • Why are floating point values so prolific?

    - by Kibbee
    So, title says it all. Why are floating point values so prolific in computer programming. Due to problems like rounding errors, and not being able to even accurately represent numbers such as 0.1, I really can't see how they got as far as they did. I understand that the computation is faster with floating point numbers, however, I can think of only a few cases that they actually the right data type would be using. If you sat back and think about every time you used a floating point value, how many times did you say, well, some error would be ok, as long as the result was a few microseconds faster. It really makes me think because Jeff was talking about NP completeness, and how heuristics give an answer that is kind of right. And well, computers shouldn't do that. They should give you the answer that is correct. Yet we see floating point values used in many applications where they are completely not valid. What really bugs me, isn't that floating point exists, but that in many languages, there isn't even a viable alternative, non-floating point, decimal value. A lot of programmers when doing financial applications have to fall back to storing the number of cents in an integer field. Which brings with it all kinds of other problems. Why do floats continue to be so prolific, even though they can't represent the real answer, and we expect computers to be accurate? [EDIT] Just to clarify, I was talking about Base 2 floating points, and not base 10 floating points. .Net offers the Decimal data type, which is a base 10 floating point value which offers a much better representation of the numbers we deal with on a daily basis in most computer programs. I find it hard to believe that even modern languages like Java don't support base 10 floating point values, unless you want to move into the realm of things like BigDecimal, which isn't really the right answer either in a lot of situations.

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  • BreezingForms Integrator Finalize Code and $this->execPieceByName('ff_InitLib');

    - by nickyt
    I've started working on a Joomla! project (I'm mainly a C#/ASP.NET kind a guy). I'm using BreezingForms and have created forms, got them working, but now I need to do some additional code in the "Finalize Code" section. I need to access form elements via BreezingForms(FacileForms) API. Here's what I'm doing, but it chokes: $this->execPieceByName('ff_SubmitLib'); // Is this necessary? // load the standard Facile Forms library $this->execPieceByName('ff_InitLib'); // page breaks here. // get the name of the uploaded file $filename = ff_getSubmit('someUploadedFile'); Now I don't know what goes wrong. The page posts back blank. I'm not sure how to debug this in Joomla. I currently do not have access to the server to debug, so I would need to debug remotely at runtime (not ideal I know). My account is of type Administrator for the Joomla backend. As far as I know all the plugins/modules are installed. Any ideas?

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  • How do I get google protocol buffer messages over a socket connection without disconnecting the clie

    - by Dan
    Hi there, I'm attempting to send a .proto message from an iPhone application to a Java server via a socket connection. However so far I'm running into an issue when it comes to the server receiving the data; it only seems to process it after the client connection has been terminated. This points to me that the data is getting sent, but the server is keeping its inputstream open and waiting for more data. Would anyone know how I might go about solving this? The current code (or at least the relevant parts) is as follows: iPhone: Person *person = [[[[Person builder] setId:1] setName:@"Bob"] build]; RequestWrapper *request = [[[RequestWrapper builder] setPerson:person] build]; NSData *data = [request data]; AsyncSocket *socket = [[AsyncSocket alloc] initWithDelegate:self]; if (![socket connectToHost:@"192.168.0.6" onPort:6666 error:nil]){ [self updateLabel:@"Problem connecting to socket!"]; } else { [self updateLabel:@"Sending data to server..."]; [socket writeData:data withTimeout:-1 tag:0]; [self updateLabel:@"Data sent, disconnecting"]; //[socket disconnect]; } Java: try { RequestWrapper wrapper = RequestWrapper.parseFrom(socket.getInputStream()); Person person = wrapper.getPerson(); if (person != null) { System.out.println("Persons name is " + person.getName()); socket.close(); } On running this, it seems to hang on the line where the RequestWrapper is processing the inputStream. I did try replacing the socket writedata method with [request writeToOutputStream:[socket getCFWriteStream]]; Which I thought might work, however I get an error claiming that the "Protocol message contained an invalid tag (zero)". I'm fairly certain that it doesn't contain an invalid tag as the message works when sending it via the writedata method. Any help on the matter would be greatly appreciated! Cheers! Dan (EDIT: I should mention, I am using the metasyntactic gpb code; and the cocoaasyncsocket implementation)

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  • Memory leak while asynchronously loading BitmapSource images

    - by harry
    I have a fair few images that I'm loading into a ListBox in my WPF application. Originally I was using GDI to resize the images (the originals take up far too much memory). That was fine, except they were taking about 400ms per image. Not so fine. So in search of another solution I found a method that uses TransformedBitmap (which inherits from BitmapSource). That's great, I thought, I can use that. Except I'm now getting memory leaks somewhere... I'm loading the images asynchronously using a BackgroundWorker like so: BitmapSource bs = ImageUtils.ResizeBitmapSource(ImageUtils.GetImageSource(photo.FullName)); //BitmapSource bs = ImageUtils.GetImageSource(photo.FullName); bs.Freeze(); this.dispatcher.Invoke(new Action(() => { photo.Source = bs; })); GetImageSource just gets the Bitmap from the path and then converts to BitmapSource. Here's the code snippet for ResizeBitmapSource: const int thumbnailSize = 200; int width; int height; if (bs.Width > bs.Height) { width = thumbnailSize; height = (int)(bs.Height * thumbnailSize / bs.Width); } else { height = thumbnailSize; width = (int)(bs.Width * thumbnailSize / bs.Height); } BitmapSource tbBitmap = new TransformedBitmap(bs, new ScaleTransform(width / bs.Width, height / bs.Height, 0, 0)); return tbBitmap; That code is essentially the code from: http://rongchaua.net/blog/c-wpf-fast-image-resize/ Any ideas what could be causing the leak?

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  • Java error: Bad version number in .class file error when trying to run Cassandra on OS X

    - by Sam Lee
    I am trying to get Cassandra to work on OS X. When I run bin/cassandra, I get the following error: ~/apache-cassandra-incubating-0.4.1-src > bin/cassandra -f Listening for transport dt_socket at address: 8888 Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:675) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:316) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374) From what I could determine by searching, this error is related to incompatible versions of Java. However, as far as I can tell, I have the latest version of Java: ~/apache-cassandra-incubating-0.4.1-src > java -version java version "1.6.0_13" Java(TM) SE Runtime Environment (build 1.6.0_13-b03-211) Java HotSpot(TM) 64-Bit Server VM (build 11.3-b02-83, mixed mode) ~/apache-cassandra-incubating-0.4.1-src > javac -version javac 1.6.0_13 ~/Downloads/apache-cassandra-incubating-0.4.1-src > echo $JAVA_HOME /System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home Any ideas on what I'm doing wrong?

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  • WebSVN with VisualSVN Server, anyone gotten authentication to work?

    - by Lasse V. Karlsen
    I have a VisualSVN Server installed on a Windows server, serving several repositories. Since the web-viewer built into VisualSVN server is a minimalistic subversion browser, I'd like to install WebSVN on top of my repositories. The problem, however, is that I can't seem to get authentication to work. Ideally I'd like my current repository authentication as specified in VisualSVN to work with WebSVN, so that though I see all the repository names in WebSVN, I can't actually browse into them without the right credentials. By visiting the cached copy of the topmost link on this google query you can see what I've found so far that looks promising. (the main blog page seems to have been destroyed, domain of the topmost page I'm referring to is the-wizzard.de) There I found some php functions I could tack onto one of the php files in WebSVN. I followed the modifications there, but all I succeeded in doing was make WebSVN ask me for a username and password and no matter what I input, it won't let me in. Unfortunately, php and apache is largely black magic to me. So, has anyone successfully integrated WebSVN with VisualSVN hosted repositories?

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  • AjaxControlToolkit TabContainer with weird rendering behavior

    - by sohum
    I've built a web application that contains a page that uses the AjaxControlToolkit's TabContainer/TabPanel objects. I've developed a custom stylesheet, as well. I'm developing using Visual Studio 2010. The following is the behavior of my application: VS2010 Development Server (localhost:XXXXX): Works as expected with the custom stylesheet. Local IIS: The TabContainer rendered but the stylesheet wasn't applied. I fixed this by doing a CTRL+F5. It seems that IIS caches stylesheets pretty aggressively. Remote Server: The TabContainer and TabPanel are completely hidden. Looking at the HTML, all of them have their visibility set to hidden. The way I got my files onto my remote server were as follows (I haven't yet set up WebDAV or remote publishing because the server is a Windows 7 box and as far as I am aware does not support FrontPage Extensions): The entire solution is under source code control (SVN). Checked in all pending changes (including projects, aspx files, css, AjaxControlToolkit binaries) Synced on the server. Rebuilt everything on server. Deployed to local IIS on server (which is externally accessible). Both on the local IIS on the server and the development server on the server, the TabContainers are completely hidden. Looking at the SVN status on the server project, only the "AjaxControlToolkit.dll" is under source-code control. All the locale-specific DLLs are not on the server. Could this be a potential issue? I'm not sure what's going on and would appreciate any help. Thanks!

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  • Algorithm for converting hierarchical flat data (w/ ParentID) into sorted flat list w/ indentation l

    - by eagle
    I have the following structure: MyClass { guid ID guid ParentID string Name } I'd like to create an array which contains the elements in the order they should be displayed in a hierarchy (e.g. according to their "left" values), as well as a hash which maps the guid to the indentation level. For example: ID Name ParentID ------------------------ 1 Cats 2 2 Animal NULL 3 Tiger 1 4 Book NULL 5 Airplane NULL This would essentially produce the following objects: // Array is an array of all the elements sorted by the way you would see them in a fully expanded tree Array[0] = "Airplane" Array[1] = "Animal" Array[2] = "Cats" Array[3] = "Tiger" Array[4] = "Book" // IndentationLevel is a hash of GUIDs to IndentationLevels. IndentationLevel["1"] = 1 IndentationLevel["2"] = 0 IndentationLevel["3"] = 2 IndentationLevel["4"] = 0 IndentationLevel["5"] = 0 For clarity, this is what the hierarchy looks like: Airplane Animal Cats Tiger Book I'd like to iterate through the items the least amount of times possible. I also don't want to create a hierarchical data structure. I'd prefer to use arrays, hashes, stacks, or queues. The two objectives are: Store a hash of the ID to the indentation level. Sort the list that holds all the objects according to their left values. When I get the list of elements, they are in no particular order. Siblings should be ordered by their Name property. Update: This may seem like I haven't tried coming up with a solution myself and simply want others to do the work for me. However, I have tried coming up with three different solutions, and I've gotten stuck on each. One reason might be that I've tried to avoid recursion (maybe wrongly so). I'm not posting the partial solutions I have so far since they are incorrect and may badly influence the solutions of others.

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  • Hibernate "JOIN ... ON"?

    - by CaptainAwesomePants
    I have an application that uses Hibernate for its domain objects. One part of the app is common between a few apps, and it has no knowledge of the other systems. In order to handle relations, our class looks like this: @Entity public class SystemEvent { @Id @GeneratedValue public int entity_id; @Column(name="event_type") public String eventType; @Column(name="related_id") public int relatedObjectId; } relatedObjectId holds a foreign key to one of several different objects, depending on the type of event. When a system wants to know about events that are relevant to its interests, it grabs all the system events with eventType "NewAccounts" or some such thing, and it knows that all of those relatedObjectIds are IDs to a "User" object or similar. Unfortunately, this has caused a problem down the line. I can't figure out a way to tell Hibernate about this mapping, which means that HQL queries can't do joins. I'd really like to create an HQL query that looks like this: SELECT users FROM SystemEvent event join Users newUsers where event.eventType = 'SignUp' However, Hibernate has no knowledge of the relationship between SystemEvent and Users, and as far as I can tell, there's no way to tell it. So here's my question: Is there any way to tell Hibernate about a relationship when your domain objects reference each other via ID numbers and not class references?

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  • WCF for a shared data access

    - by Audrius
    Hi all, I have a little experience with WCF and would like to get your opinion/suggestion on how the following problem can be solved: A web service needs to be accessible from multiple clients simultaneously and service needs to return a result from a shared data set. The concrete project I'm working on has to store a list of IP addresses/ranges. This list will be queried by a bunch of web servers for a validation purposes and we speak of a couple of thousand or more queries per minute. My initial draft approach was to use Windows service as a WCF host with service contract implementing class that is decorated with ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple) that has a list object and a custom locking for accessing it. So basically I have a WCF service singleton with a list = shared data - multiple clients. What I do not like about it is that data and communication layers are merged into one and performance wise this doesn't feel "right". What I really really (- want is Windows service running an instance of IP list holding container class object, a second service running WCF service contract implementation and a way the latter querying the former in a nice way with a minimal blocking. Using another WCF channel would not really take me far away from the initial draft implementation or would it? What approach would you take? Project is still in a very early stage so complete design re-do is not out of question. All ideas are appreciated. Thanks! UPDATE: The data set will be changed dynamically. Web service will have a separate method to add IP or IP range and on top of that there will be a scheduled task that will trigger data cleanup every 10-15 minutes according to some rules. UPDATE 2: a separate benchmark project will be kicked up that should use MSSQL as a data backend (instead on in-memory list).

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  • Extract known pattern substring from NSString (without regex)

    - by d11wtq
    I'm really tempted to drop RegexKit (or my own libpcre wrapper) into my project in order to do this, but before I do that I want to know how Cocoa developers manage to do half of this basic stuff without really convoluted code or without linking with RegexKit or another regular expression library. I find it gobsmacking that Cocoa does not include any regular expression matching features. I've so accustomed to using regular expressions for all kinds of things that I'm lost without them. I can do what I need without them, but the code would be rather convoluted. So, Cocoa devs, I ask you, what's the "Cocoa way" to do this... The problem is an everyday problem in programming as far as I'm concerned. Cocoa must have ways of doing this with the built-in features. Note that the position of the elements I want to match changes, and sometimes "quotes" are present. Whitespace is variable. Take the following strings: Content-Type: application/xml; charset=utf-8 Content-Type: text/html; charset="iso-8859-1" Content-Type: text/plain; charset=us-ascii Content-Type: text/plain; name="example.txt"; charset=utf-8 From all of these strings, how would you go about determining the mime type (e.g. text/plain) and the charset (e.g. utf-8) using just the built-in Cocoa classes? I'd end up performing a series of -rangeOfString: and substring calls, with conditional checks to deal with the optional quotes etc. Is there a way to do this with NSScanner? The NSScanner class seems to have a pretty naive API to me. Something like C's sscanf() that works for NSString objects would be an ideal fit. Most of my string parsing needs are simple such as this example so maybe regular expressions, while I'm accustomed to them, are overkill?

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  • WPF Background Thread Invocation

    - by jeffn825
    Maybe I'm mis-remembering how Winforms works or I'm overcomplicating the hell out of this, but here's my problem. I have a WPF client app application that talks to a server over WCF. The current user may "log out" of the WPF client, which closes all open screens, leaves only the navigation pane, and minimizes the program window. When the user re-maximizes the program window, they are prompted to log in. Simple. But sometimes things happen on background threads - like every 5 minutes the client tries to make a WCF calls that refreshes some cached data. And what if the user is logged out when this 5 minute timer triggers? Well, then the user should be prompted to log back in...and this must of course happen on the UI thread. private static ISecurityContext securityContext; public static ISecurityContext SecurityContext { get { if (securityContext == null) { // Login method shows a window and prompts the user to log in Application.Current.Dispatcher.Invoke((Action)Login); } return securityContext; } } So far so good, right? But what happens when multiple threads hit this spot of code? Well, my first intuition was that since I'm syncrhonizing across the Application.Current.Dispatcher, I should be fine, and whichever thread hit first would be responsible for showing the login form and getting the user logged in... Not the case... Thread 1 will hit the code and call ShowDialog on the login form Thread 2 will also hit the code and will call Login as soon as Thread 1 has called ShowDialog, since calling ShowDialog unblocked Thread 1 (I believe because of the way the WPF message pump works) All I want is a synchronized way of getting the user logged back into the application...what am I missing here? Thanks in advance.

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  • Thread resource sharing

    - by David
    I'm struggling with multi-threaded programming... I have an application that talks to an external device via a CAN to USB module. I've got the application talking on the CAN bus just fine, but there is a requirement for the application to transmit a "heartbeat" message every second. This sounds like a perfect time to use threads, so I created a thread that wakes up every second and sends the heartbeat. The problem I'm having is sharing the CAN bus interface. The heartbeat must only be sent when the bus is idle. How do I share the resource? Here is pseudo code showing what I have so far: TMainThread { Init: CanBusApi =new TCanBusApi; MutexMain =CreateMutex( "CanBusApiMutexName" ); HeartbeatThread =new THeartbeatThread( CanBusApi ); Execution: WaitForSingleObject( MutexMain ); CanBusApi->DoSomething(); ReleaseMutex( MutexMain ); } THeartbeatThread( CanBusApi ) { Init: MutexHeart =CreateMutex( "CanBusApiMutexName" ); Execution: Sleep( 1000 ); WaitForSingleObject( MutexHeart ); CanBusApi->DoHeartBeat(); ReleaseMutex( MutexHeart ); } The problem I'm seeing is that when DoHeartBeat is called, it causes the main thread to block while waiting for MutexMain as expected, but DoHeartBeat also stops. DoHeartBeat doesn't complete until after WaitForSingleObject(MutexMain) times out in failure. Does DoHeartBeat execute in the context of the MainThread or HeartBeatThread? It seems to be executing in MainThread. What am I doing wrong? Is there a better way? Thanks, David

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  • CKEditor createFakeParserElement: writeHtml is not a function

    - by Phil Sturgeon
    I am trying to write a plugin for CKEditor that is basically just a iframe with PHP content. The user browses around, selects the video they want and then they click insert. The problem is that I need to create a "fake element" for this video, as inserting a video directly seems to show up as a Flash object, and we need to make it look a little different. I have copied together some code from the Flash plugin.js (remember this is all undocumented and uncommented) and so far come up with this: function insertFakeElement( html ) { editor = window.parent.instance; var realElement = CKEDITOR.dom.element.createFromHtml( html ); var fakeElement = editor.createFakeParserElement( realElement, 'cke_video', 'object', true ), fakeStyle = fakeElement.attributes.style || ''; var width = realElement.attributes.width, height = realElement.attributes.height; if ( typeof width != 'undefined' ) fakeStyle = fakeElement.attributes.style = fakeStyle + 'width:' + cssifyLength( width ) + ';'; if ( typeof height != 'undefined' ) fakeStyle = fakeElement.attributes.style = fakeStyle + 'height:' + cssifyLength( height ) + ';'; editor.insertHTML(fakeElement.getHtml()); } The line "giving me jip" is: var fakeElement = editor.createFakeParserElement( realElement, 'cke_video', 'object', true ), It errors here saying: l.writeHtml is not a function [Break on this error] if(o)o.addRules(l);}});})();a.editor.p..."',o,'_text" The .js file is minified and I have no idea how the source files all fit together so I can't track down the cause of this error. Does anybody know what I am doing wrong?

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  • help in the Donalds B. Johnson's algorithm, i cannot understand the pseudo code (PART II)

    - by Pitelk
    Hi all , i cannot understand a certain part of the paper published by Donald Johnson about finding cycles (Circuits) in a graph. More specific i cannot understand what is the matrix Ak which is mentioned in the following line of the pseudo code : Ak:=adjacency structure of strong component K with least vertex in subgraph of G induced by {s,s+1,....n}; to make things worse some lines after is mentins " for i in Vk do " without declaring what the Vk is... As far i have understand we have the following: 1) in general, a strong component is a sub-graph of a graph, in which for every node of this sub-graph there is a path to any node of the sub-graph (in other words you can access any node of the sub-graph from any other node of the sub-graph) 2) a sub-graph induced by a list of nodes is a graph containing all these nodes plus all the edges connecting these nodes. in paper the mathematical definition is " F is a subgraph of G induced by W if W is subset of V and F = (W,{u,y)|u,y in W and (u,y) in E)}) where u,y are edges , E is the set of all the edges in the graph, W is a set of nodes. 3)in the code implementation the nodes are named by integer numbers 1 ... n. 4) I suspect that the Vk is the set of nodes of the strong component K. now to the question. Lets say we have a graph G= (V,E) with V = {1,2,3,4,5,6,7,8,9} which it can be divided into 3 strong components the SC1 = {1,4,7,8} SC2= {2,3,9} SC3 = {5,6} (and their edges) Can anybody give me an example for s =1, s= 2, s= 5 what if going to be the Vk and Ak according to the code? The pseudo code is in my previous question in http://stackoverflow.com/questions/2908575/help-in-the-donalds-b-johnsons-algorithm-i-cannot-understand-the-pseudo-code and the paper can be found at http://stackoverflow.com/questions/2908575/help-in-the-donalds-b-johnsons-algorithm-i-cannot-understand-the-pseudo-code thank you in advance

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  • Remove ActiveRecord in Rails 3 (beta)

    - by Splash
    Now that Rails 3 beta is out, I thought I'd have a look at rewriting an app I have just started work on in Rails 3 beta, both to get a feel for it and get a bit of a head-start. The app uses MongoDB and MongoMapper for all of its models nad therefore has no need for ActiveRecord. In the previous version, I am unloading activerecord in the following way: config.frameworks -= [ :active_record ] # inside environment.rb In the latest version this does not work - it just throws an error: /Library/Ruby/Gems/1.8/gems/railties-3.0.0.beta/lib/rails/configuration.rb:126:in `frameworks': config.frameworks in no longer supported. See the generated config/boot.rb for steps on how to limit the frameworks that will be loaded (RuntimeError) from *snip* Of course, I have looked at the boot.rb as it suggested, but as far as I can see, there is no clue here as to how I might go about unloading AR. The reason I need to do this is because not only is it silly to be loading something I don't want, but it is complaining about its inability to make a DB connection even when I try to run a generator for a controller. This is because I've wiped database.yml and replaced it with connection details for MongoDB in order to use this gist for using database.yml for MongoDB connection details. Not sure why it needs to be able to initiate a DB connection at all just to generate a controller anyway.... Is anyone aware of the correct Rails 3 way of doing this?

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  • NoSuchMethod exception thrown in GWT

    - by eb1
    I'm starting to get my feet wet in the latest Google Web Toolkit using the Eclipse plugin on OS X 10.5.8. So far I've been able to get the client up and running, which is great. The server, though, is a different matter. I'm trying to link to a .jar file that has some classes I want to use in a server ServiceImpl class, but it seems to have glommed onto a previous iteration of the .jar - I've added a method, rebuilt the jar, removed the jar from the libraries tab on the GWT project's build path (as well as on the exports) and reincluded the jar. No luck - I'm still getting: [WARN] Exception while dispatching incoming RPC call com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract org.gwtapplication.client.LWDocument org.gwtapplication.client.DocumentService.getDocument()' threw an unexpected exception: java.lang.NoSuchMethodError: org.externalmodel.MyReallyValidClass.toSomething()Ljava/lang/String; at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:378) at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:581) ... Caused by: java.lang.NoSuchMethodError: org.externalmodel.MyReallyValidClass.toSomething()Ljava/lang/String; at org.application.server.DocumentServiceImpl.getDocument(DocumentServiceImpl.java:45) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) Eclipse's code sense has no problems resolving the MyReallyValidClass.toSomething() call, and there are no errors with other calls into the externalmodel classes. Any clue where I should be looking?

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  • How to dynamically set control IDs inside a repeater template?

    - by Bryan
    Here is a perplexing issue I have not seen a good answer to on StackOverflow, although there a couple stabs at it... I have a situation where I'd like to do this: <asp:Repeater ID="MyRepeater" runat="server" OnItemDataBound="MyRepeater_ItemDataBound"> <ItemTemplate> <li id="id?"> All the other stuff </li> </ItemTemplate> </asp:Repeater> The question... is how do I get the ID of my <li> elements to be id1, id2, id3, etc., based on the ItemIndex they are bound to? So far the most... er..."elegant" solution I've come up with is to replace the <li> with an asp:Literal and dump the <li...>' text. But that just feels... so wrong. And no, I'm not using ASP.NET 4.0, which I've read will provide this functionality.

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  • How to write an iphone application to control a device that exposes a telnet api

    - by MAC
    Hi! I have to write an iphone application that controls a device. This device exposes a telnet based interface. The application should ideally have user access control and customizability for each user. I was thinking of writing C++ classes that would communicate with the device using sockets. This functionality can then be exposed through web-services that can be called by the iphone application. However as i looked into it deeper, the api allows you to register for events using telnet and then you can receive notification when those events occur. That kinda put a spanner in the works for me. I for one dont know a "push" scenario can work with webservices. First off i have never programmed for the iphone so far. So i am not really sure what can be done. So i was thinking if instead of having a webserver to go through, why not have the application independently running on the iphone, directly communicating with the device using sockets. The question though is, is that possible and second i am thinking it would raise a security aspect. First we could control security as everything was going through our central server. Is there a way to handle security (in the sense who has access to the device) without having a central server. I am sorry that this seems like an unorganized post, but iam trying to brainstorm here. Looking forward to hear your opinions.

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  • NHibernate - joining on a subquery using ICriteria

    - by owensymes.mp
    I have a SQL query that I need to represent using NHibernate's ICriteria API. SELECT u.Id as Id, u.Login as Login, u.FirstName as FirstName, u.LastName as LastName, gm.UserGroupId_FK as UserGroupId, inner.Data1, inner.Data2, inner.Data3 FROM dbo.User u inner join dbo.GroupMember gm on u.Id = gm.UserAnchorId_FK left join ( SELECT di.UserAnchorId_FK, sum(di.Data1) as Data1, sum(di.Data2) as Data2, sum(di.Data3) as Data3 FROM dbo.DailyInfo di WHERE di.Date between '2009-04-01' and '2009-06-01' GROUP BY di.UserAnchorId_FK ) inner ON inner.UserAnchorId_FK = u.Id WHERE gm.UserGroupId_FK = 195 Attempts so far have included mapping 'User' and 'DailyInfo' classes (my entities) and making a DailyInfo object a property of the User object. However, how to map the foreign key relationship between them is still a mystery, ie <one-to-one></one-to-one> <one-to-many></one-to-many> <generator class="foreign"><param name="property">Id</param></generator> (!) Solutions on the web are generally to do with subqueries within a WHERE clause, however I need to left join on this subquery instead to ensure NULL values are returned for rows that do not join. I have the feeling that I should be using a Criteria for the outer query, then forming a 'join' with a DetachedCriteria to represent the subquery?

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  • javascript removeChild(this) from input[type="submit"] onclick breaks future use of form.submit() un

    - by maximumduncan
    I have come across some strange behaviour, and I'm assuming a bug in firefox, when removing a input submit element from the DOM from within the click event. The following code reproduces the issue: <form name="test_form"> <input type="submit" value="remove me" onclick="this.parentNode.removeChild(this);" /> <input type="submit" value="submit normally" /> <input type="button" value="submit via js" onclick="document.test_form.submit();" /> </form> To reproduce: Click "remove me" Click "submit via js". Note that the form does not get submitted, this is the problem. Click "submit normally". Note that the form still gets submitted normally. It appears that, under Firefox, if you remove a submit button from within the click event it puts the form in an invalid state so that any future calls to form.submit() are simply ignored. But it is a javascript-specific issue as normal submit buttons within this form still function fine. To be honest, this is such a simple example of this issue that I was expecting the internet to be awash with other people exeriencing it, but so far searching has yealded nothing useful. Has anyone else experienced this and if so, did you get to the bottom of it? Many thanks

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  • ClickOnce permissions

    - by stephenfalken
    We recently updated our main website. This included creating a new directory to hold the new site; then, some of the existing subdirectories needed to be copied over. Some of the virtual directories below the main site are clickonce publishing locations. These have been 100% successful publishing locations for 3 years now. We would update the application in Visual Studio and then publish... painless. Very long story short, since we've copied the directories to the new main site location on disk, all of our clickonce sites except one will no longer publish. They all fail with an error saying "you are not authorized to perform the current operation". This is immeidately after we set permissions to Full Control for my domain user group. I've checked everything I know how to check as far as permissions go and made the non-working ones' permissions match the one that does work, but no joy. We had problems on Friday and I fixed the one site that does work, but I can't remember how I fixed it; all I remember is that it took a long time screwing with it to make it work. Could there be some arcane setting in IIS that has been omitted? Is there a simple list of things to check anywhere on the Net? ClickOnce information is scattered among 50,000 URLs and I haven't been able to figure it out again. Thanks

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