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• Flash CS3/AS3 - How to Mask Nested MovieClips in External Classes

  - by Max Jackson

  I have a number of external class files that make up (or are trying to build) a portfolio. One of the class files for this project is a Menu.as class I tried extends, but I'm yet to use extends to where it doesn't become a ball of tangled holiday cheer. So my main portfolio class (the one where I'm assembling everything) calls an instance of the Menu class. From the Preloader through the Portfolio class into the Menu class is where I'm passing the content because I want to package things properly. This is Menu content, so naturally I want to position it in a properly names spot. I'm trying to reveal this Menu in a mask and I'm getting the old #1009 error. In a trace, this will work: trace(site_mc.menu_mc.mainMask_mc); // returns [object mainMask_mc_4] However, when I try to truncate the string into a single compact_mc... compactMenu_mc = site_mc.menu_mc.mainMask_mc; trace(compact_mc); // it won't trace (#1009). I said to hell with it, but now I need to have one MovieClip mask another. So I figure I can't go all... parent.parent.parent.clip_mc.mask = parent.parent.parent.masked_mc Probably because of datatyping and whatever else. I hate to be vague, but I'm new and have been working like gangbusters for days to get this portfolio up. Any suggestions or pointers on things my noob brain might've missed are given much thanks. :)

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• maintaining a large list in python

  - by Oren

  I need to maintain a large list of python pickleable objects that will quickly execute the following algorithm: The list will have 4 pointers and can: Read\Write each of the 4 pointed nodes Insert new nodes before the pointed nodes Increase a pointer by 1 Pop nodes from the beginning of the list (without overlapping the pointers) Add nodes at the end of the list The list can be very large (300-400 MB), so it shouldnt be contained in the RAM. The nodes are small (100-200 bytes) but can contain various types of data. The most efficient way it can be done, in my opinion, is to implement some paging-mechanism. On the harddrive there will be some database of a linked-list of pages where in every moment up to 5 of them are loaded in the memory. On insertion, if some max-page-size was reached, the page will be splitted to 2 small pages, and on pointer increment, if a pointer is increased beyond its loaded page, the following page will be loaded instead. This is a good solution, but I don't have the time to write it, especially if I want to make it generic and implement all the python-list features. Using a SQL tables is not good either, since I'll need to implement a complex index-key mechanism. I tried ZODB and zc.blist, which implement a BTree based list that can be stored in a ZODB database file, but I don't know how to configure it so the above features will run in reasonable time. I don't need all the multi-threading\transactioning features. No one else will touch the database-file except for my single-thread program. Can anyone explain me how to configure the ZODB\zc.blist so the above features will run fast, or show me a different large-list implementation?

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• Spaces and backslashes in Visual Studio build events

  - by gencha

  I have an application that is supposed to aid my project in terms of pre- and post-build event handling. I'm using ndesk.options for command line argument parsing. Which gave me weird results when my project path contains spaces. I thought this was the fault of ndesk.options but I guess my own application is to blame. I call my application as a post-built event like so: build.exe --in="$(ProjectDir)" --out="c:\out\" A simple foreach over args[] displays the following: --in=c:\my project" --out=c:\out" What happened is that the last " in each parameter was treated as if it was escaped. Thus the trailing backslash was removed. And the whole thing is treated as a single argument. Now I thought I was being smart by simply escaping the first " as well, like so: build.exe --in=\"$(ProjectDir)" --out=\"c:\out\" In that case the resulting args[] look like this: --path="c:\my project" --out="c:\out" The trailing backslash in the parameters is still swallowed and the first parameter is now split up. Passing this args[] to ndesk.options will then yield wrong results. How should the right command line look so that the correct elements end up in the correct args[] slots? Alternatively, how is one supposed to parse command line arguments like these with or without ndesk.options? Any suggestion is welcome. Thanks in advance

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• Java 1.5 crypto on OS X - AccessControlException

  - by bpapa

  I'm trying to do a Google App Engine project on OS X (latest and greatest). I'm using classes from javax.crypto, and I'm seeing an AccessControlException thrown when I try to initialize an instance of the Mac class. Here's the stack trace: WARNING: Nested in java.lang.ExceptionInInitializerError: java.security.AccessControlException: access denied (java.lang.RuntimePermission loadLibrary.keychain) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:264) at java.security.AccessController.checkPermission(AccessController.java:427) at java.lang.SecurityManager.checkPermission(SecurityManager.java:532) at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:76) at java.lang.SecurityManager.checkLink(SecurityManager.java:818) at java.lang.Runtime.loadLibrary0(Runtime.java:816) at java.lang.System.loadLibrary(System.java:993) at com.apple.crypto.provider.HmacCore.<clinit>(HmacCore.java:26) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:494) at java.lang.Class.newInstance0(Class.java:350) at java.lang.Class.newInstance(Class.java:303) at java.security.Provider$Service.newInstance(Provider.java:1130) at javax.crypto.Mac.a(DashoA12275) at javax.crypto.Mac.init(DashoA12275) Any ideas on 1 - what went wrong and how fix it 2 - if it's not fixable (I know Apple has not been the best supporter of Java in recent years), what's an alternative approach?

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• Formatting and pretty printing dates with jquery

  - by Tauren

  I need to display dates in a couple different ways in an app built with jquery. In some situations, I need the typical "yyyy-mm-dd hh:mma" type of formatting, with all of it's different permutations. In other cases, I need to show dates "pretty printed" similar to how StackOverflow does them: 5 seconds ago 12 minutes ago 3 hours ago yesterday 2 days ago My application already uses JQuery UI DatePicker which includes a formatDate() function, but as far as I can tell, there is no way to use it outside of the datepicker. I want to format dates that aren't associated with a datepicker. Is it possible to do this using DatePicker? The DateJS library can parse dates like "12 minutes ago", but as far as I can tell, it cannot take a Date object and format strings like this. It can format the typical "yyyy-mm-dd" types of formats. This library seems pretty heavy as well. John Resig's Pretty Dates looks like it can provide the pretty printing ("2 hours ago"), but it doesn't do the standard formatting. Is there not a single plugin that can do all of this? Is there a way to leverage the DatePicker code so I don't have to load multiple codebases that do the same things?

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• WPF Update Binding when Bound directly to DataContext w/ Converter

  - by Adam

  Normally when you want a databound control to 'update,' you use the "PropertyChanged" event to signal to the interface that the data has changed behind the scenes. For instance, you could have a textblock that is bound to the datacontext with a property "DisplayText" <TextBlock Text="{Binding Path=DisplayText}"/> From here, if the DataContext raises the PropertyChanged event with PropertyName "DisplayText," then this textblock's text should update (assuming you didn't change the Mode of the binding). However, I have a more complicated binding that uses many properties off of the datacontext to determine the final look and feel of the control. To accomplish this, I bind directly to the datacontext and use a converter. In this case I am working with an image source. <Image Source="{Binding Converter={StaticResource ImageConverter}}"/> As you can see, I use a {Binding} with no path to bind directly to the datacontext, and I use an ImageConverter to select the image I'm looking for. But now I have no way (that I know of) to tell that binding to update. I tried raising the propertychanged event with "." as the propertyname, which did not work. Is this possible? Do I have to wrap up the converting logic into a property that the binding can attach to, or is there a way to tell the binding to refresh (without explicitly refreshing the binding)? Any help would be greatly appreciated. Thanks! -Adam

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• Workflow Foundation (WF) -- Why does Visual Studio's designer not use my custom ActivityDesignerThem

  - by stakx

  Problem: I am trying to customize a custom Workflow Foundation activity (called CustomActivity) so that it will display with a specific background color. What I've got so far: First, I'm defining a custom ActivityDesignerTheme as follows: public class CustomActivityTheme : ActivityDesignerTheme { public CustomActivityTheme(WorkflowTheme theme) : base(theme) { this.BackColorStart = Color.FromArgb(0xff, 0xf4, 0xf4, 0xf4); this.BackColorEnd = Color.FromArgb(0xff, 0xc0, 0xc0, 0xc0); this.BackgroundStyle = LinearGradientMode.Horizontal; } } Then, I am applying this theme to a custom ActivityDesigner (apparently the theme must be applied to a designer, and not to an activity): [ActivityDesignerTheme(typeof(CustomActivityTheme))] public class CustomActivityDesigner : SequentialActivityDesigner { ... } Ultimately, I am applying the custom designer to my custom Activity: [Designer(typeof(CustomActivityDesigner))] public partial class CustomActivity : SequenceActivity { ... } Now, according to some code examples that I've seen, this should do the trick. However, when I include an instance of my CustomActivity in a workflow, my custom theme is not applied and it is displayed in the Visual Studio Designer as any standard activity would (white background etc.). I tried re-compiling and even re-starting Visual Studio a couple of times, just to make sure the used assembly is up-to-date, but to no avail. My question: What am I missing? Why does Visual Studio's Workflow Designer not respect the CustomActivityTheme when it displays a CustomActivity?

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• OpenEjb DeploymentLoader.getWebDescriptors NullPointerException

  - by jwmajors81

  I am currently getting the following error when I try to startup an EAR that includes OpenEJB. The error is: java.lang.NullPointerException at org.apache.openejb.config.DeploymentLoader.getWebDescriptors(DeploymentLoader.java:1057) at org.apache.openejb.config.DeploymentLoader.discoverModuleType(DeploymentLoader.java:1162) at org.apache.openejb.config.DeploymentsResolver.processUrls(DeploymentsResolver.java:294) at org.apache.openejb.config.DeploymentsResolver.loadFromClasspath(DeploymentsResolver.java:248) at org.apache.openejb.spring.ClassPathApplication.loadApplications(ClassPathApplication.java:56) at org.apache.openejb.spring.AbstractApplication.deployApplication(AbstractApplication.java:106) at org.apache.openejb.spring.OpenEJB.deployApplication(OpenEJB.java:342) at org.apache.openejb.spring.AbstractApplication.start(AbstractApplication.java:94) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:618) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:340) The environment consists of: - Spring 3.0 - OpenEJB 3.1 - WebSphere 6.1 (Without EJB/Web Service feature packs) - OpenEJB-Spring jar The app-config.xml that configures Spring and OpenEJB looks like: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd" Also please note that I do have a JUnit test that runs against the app-config.xml specified above that can successfully load the application context file. It is just when I deploy it to WebSphere I encounter the error provided at the beginning of this message. Any assistance would be greatly appreciated. Thanks, Jeremy

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• How to select from tableA sum of grouped numbers from tableB above their sums average in Oracle?

  - by Nazgulled

  I have data like this: tableA.ID --------- 1 2 3 tableB.ID tableB.NUM -------------------- 1 10 1 15 2 18 3 12 2 15 3 13 1 12 I need to select tableA IDs where the sum of their NUMs in tableB is above the average of all tableA IDs sums. In other words: SUM ID=1 -> 10+15+12 = 37 SUM ID=2 -> 18+12+15 = 45 SUM ID=3 -> 12+13 = 25 AVG ALL IDs -> (37+45+25)/3 = 35 The SELECT must only show ID 1 and 2 because 37 35, 45 35 but 25 < 35. This is my current query which is working fine: SELECT tableA.ID FROM tableA, tableB WHERE tableA.ID = tableB.ID HAVING SUM(tableB.NUM) > ( SELECT AVG(MY_SUM) FROM ( SELECT SUM(tableB.NUM) MY_SUM FROM tableA, tableB WHERE tableA.ID = tableB.ID GROUP BY tableA.ID ) ) GROUP BY tableA.ID But I have a feeling there might be a better way without all those nested SELECTs. Perhaps 2, but 3 feels like too much. I'm probably wrong though. For instance, why can't I do something simple like this: SELECT tableA.ID FROM tableA, tableB WHERE tableA.ID = tableB.ID HAVING SUM(tableB.NUM) > AVG(SUM(tableB.NUM)) GROUP BY tableA.ID Or this: SELECT tableA.ID, SUM(tableB.NUM) MY_SUM FROM tableA, tableB WHERE tableA.ID = tableB.ID HAVING MY_SUM > AVG(MY_SUM) GROUP BY tableA.ID

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• Problem creating a mosaic of images using JAI

  - by IanW

  Hello I'm trying to use JAI to create a single mosaic consisting of 4 TIF images each of which is 5000 x 5000. The code I have written is as follows .. RenderedOp mosaic=null; ParameterBlock pbMosaic=new ParameterBlock(); pbMosaic.add(MosaicDescriptor.MOSAIC_TYPE_OVERLAY); RenderedOp in=null; // Get 4 tiles and add them to the Mosaic in=returnRenderedOp(path,"northwest.tif"); pbMosaic.addSource(in); in=returnRenderedOp(path,"northeast.tif"); pbMosaic.addSource(in); in=returnRenderedOp(path,"southwest.tif"); pbMosaic.addSource(in); in=returnRenderedOp(path,"southeast.tif"); pbMosaic.addSource(in); // Setup the ImageLayout ImageLayout imageLayout=new ImageLayout(0,0,10000,10000); imageLayout.setTileWidth(5000); imageLayout.setTileHeight(5000); imageLayout.setColorModel(in.getColorModel()); imageLayout.setSampleModel(in.getSampleModel()); mosaic=JAI.create("mosaic",pbMosaic,new RenderingHints(JAI.KEY_IMAGE_LAYOUT,imageLayout)); The problem is that all 4 images are being positioned in the same place in the top left hand corner of the mosaic so the other three quarters of it is empty. Can anyone tell me how I can choose the position of each picture that makes up the mosaic so each appears in the correct place ? Thanks Ian

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• Mingling C++ classes with Objective C classes

  - by Joey

  I am using the iphone SDK and coding primarily in C++ while using parts of the SDK in obj-c. Is it possible to designate a C++ class in situations where an obj-c class is needed? For instance: 1) when setting delegates to obj-c objects. I cannot make a C++ class derive from a Delegate protocol so this and possibly other reasons prevent me from making my C++ class a delegate for various obj-c objects. What I do as a solution is create an obj-c adapter class that contains a ptr to the C++ class and is used as the delegate (notifying the C++ class when it is called). It feels cumbersome to write these every time I need to get delegate notifications to a C++ class. 2) when setting selectors This goes hand in hand with item 1. Say I want to set a callback to fire when something is done, like a button press or a setAnimationDidStopSelector in the UIView animation functionality. It would be nice to be able to designate a C++ function along with the relevant delegate for setAnimationDelegate. Well, I suspect this isn't readily possible, but if anyone has any suggestions on how to do it if it is, or on how to write such things more easily, I would love to hear them. Thanks.

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• ASIHTTPRequest POST splits up header + data?

  - by chris.o.

  Hi, I am using ASIHTTPRequest to POST data to a remote server on iPhone 4.2.1. When I make the following post request to our server, I get a 400 response (I removed the IP address): NSString dataString = @"data1=00&data2=00&data3=00"; ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:<ipremoved>]]]; [request appendPostData:[dataString dataUsingEncoding:NSUTF8StringEncoding]]; [request setRequestMethod:@"POST"]; [request addRequestHeader:@"User-Agent" value:@"iphone app"]; [request addRequestHeader:@"Content-Type" value:@"application/octet-stream"]; request.delegate = self; [request startAsynchronous]; When I send the same data using curl, I receive a 200 response: curl -H "User-Agent: iphone app" -H "Accept:" -H "Content-Type:application/octet-stream" --data-ascii "data1=00&data2=00&data3=00" --location <ipremoved> -v My colleague is stating that, in the failure case, the ASIHTTPRequest requires two socket reads: one for the header and one for the data. Apparently the server is not presently equipped to parse this correctly, so I am trying to work around it. If I setup a proxy between iPhone and my Mac and run Paros (to see packets), the problem goes away. Paros combine the header and data so that it is all acquired by the server in a single socket read. I've tried a few things suggested in other posts including disabling persistent connections, but I am not having any luck. I've also tried doing a ASIHTTPFormRequest, but the server does not like the generated data format. Any suggestions would be appreciated. Thanks.

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• How to avoid XCode framework weak-linking problems?

  - by Frank R.

  Hi, I'm building an application that takes advantage of Mac OS X 10.6-only technologies, but without giving up backwards compatibility to 10.5 Leopard. The way I do this is by setting the 10.6 SDK as the base SDK, weak-linking all frameworks and setting the deployment target to 10.5 as described in: http://developer.apple.com/mac/library/DOCUMENTATION/MacOSX/Conceptual/BPFrameworks/Concepts/WeakLinking.html This works fine; before making a call that is Snow Leopard-only I need to check that the selector or indeed the class actually exist. Or I can just check the OS version before making the call. The problem is that this is incredibly fragile. If I make a single call that is 10.6 only I blow Leopard-compatibility. So using even the normal code code completion feature can be dangerous. My question: is there any way of checking which calls are not defined on 10.5 before doing a release build? Some kind of static analysis, or even just a trick (a target set the other SDK?) would do. I obviously should test on a Leopard machine before releasing anything, but even so I can't possibly go through all paths of the program before every release. Any advice would be appreciated. Best regards, Frank

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• Axis2 webservice (aar archive) properties file

  - by XpiritO

  Hi there, guys. I'm currently developing a set of SOAP webservices over Axis2, deployed over a clustered WebLogic 10.3.2 environment. My webservices use some user settings that I want to be editable without the need for recompiling and regenerating the AAR archive. With this in mind, I chose to put them into a properties file that is loaded and consumed in runtime. Unfortunately, I'm having some questions about this: As far as I know, to achieve what I want, the only option is to put the properties file into the ../axis2/WEB-INF/classes directory of each one of the deployments (on each WebLogic instance) I currently have on my clustered configuration, and then load the file, as follows (or equivalent, this has not been verified for optimization): InputStreamReader fMainProp = new InputStreamReader(this.getClass().getResourceAsStream("myfile.properties")); Properties mainProp = new Properties(); mainProp.load(fMainProp); This is not as practical as I wanted it to be, because each time I want to alter some setting on the properties file, I have to edit each one of the files (deployed over different WebLogic instances) and there is a high probability of modifying one of these files without modifying the others. What I would like to know is if there is any (better) alternative to accomplish what I want, minimizing the potential conflict of configuration that is created by distributing and replicating the properties file through multiple WebLogic instances.

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• Constant NSDictionary/NSArray for class methods.

  - by Jeff B

  I am trying to code a global lookup table of sorts. I have game data that is stored in character/string format in a plist, but which needs to be in integer/id format when it is loaded. For instance, in the level data file, a "p" means player. In the game code a player is represented as the integer 1. This let's me do some bitwise operations, etc. I am simplifying greatly here, but trying to get the point across. Also, there is a conversion to coordinates for the sprite on a sprite sheet. Right now this string-integer, integer-string, integer-coordinate, etc. conversion is taking place in several places in code using a case statement. This stinks, of course, and I would rather do it with a dictionary lookup. I created a class called levelInfo, and want to define the dictionary for this conversion, and then class methods to call when I need to do a conversion, or otherwise deal with level data. NSString *levelObjects = @"empty,player,object,thing,doohickey"; int levelIDs[] = [0,1,2,4,8]; // etc etc @implementation LevelInfo +(int) crateIDfromChar: (char) crateChar { int idx = [[crateTypes componentsSeparatedByString:@","] indexOfObject: crateChar]; return levelIDs[idx]; } +(NSString *) crateStringFromID: (int) crateID { return [[crateTypes componentsSeparatedByString:@","] objectAtIndex: crateID]; } @end Is there a better way to do this? It feels wrong to basically build these temporary arrays, or dictionaries, or whatever for each call to do this translation. And I don't know of a way to declare a constant NSArray or NSDictionary. Please, tell me a better way....

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• Force x86 CLR on 'Any CPU' .NET assembly

  - by jeffora

  In .NET, the 'Platform Target: Any CPU' compiler option allows a .NET assembly to run as 64bit on a x64 machine, and 32bit on an x86 machine. It is also possible to force an assembly to run as x86 on an x64 machine using the 'Platform Target: x86' compiler option. Is it possible to run an assembly with the 'Any CPU' flag, but determine whether it should be run in the x86 or x64 CLR? Normally this decision is made by the CLR/OS Loader (as is my understanding) based on the bitness of the underlying system. I am trying to write a C# .NET application that can interact with (read: inject code into) other running processes. x64 processes can only inject into other x64 processes, and the same with x86. Ideally, I would like to take advantage of JIT compilation and the Any CPU option to allow a single application to be used to inject into either x64 or x86 processes (on an x64 machine). The idea is that the application would be compiled as Any CPU. On an x64 machine it would run as x64. If the target process is x86, it should relaunch itself, forcing the CLR to run it as x86. Is this possible?

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• Is there any open source tool that automatically 'detects' email threading like Gmail?

  - by Chris W.

  For instance, if the original message (message 1) is... Hey Jon, Want to go get some pizza? -Bill And the reply (message 2) is... Bill, Sorry, I can't make lunch today. Jonathon Parks, CTO Acme Systems On Wed, Feb 24, 2010 at 4:43 PM, Bill Waters wrote: Hey John, Want to go get some pizza? -Bill In Gmail, the system (a) detects that message 2 is a reply to message 1 and turns this into a 'thread' of sorts and (b) detects where the replied portion of the message actually is and hides it from the user. (In this case the hidden portion would start at "On Wed, Feb..." and continue to the end of the message.) Obviously, in this simple example it would be easy to detect the "On <Date, <Name wrote:" or the "" character prefixes. But many email systems have many different style of marking replies (not to mention HTML emails). I get the feeling that you would have to have some damn smart string parsing algorithms to get anywhere near how good GMail's is. Does this technology already exist in an open source project somewhere? Either in some library devoted to this exclusively or perhaps in some open source email client that does similar message threading? Thanks.

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• Making an AJAX WCF Web Service request during an Async Postback

  - by nekno

  I want to provide status updates during a long-running task on an ASP.NET WebForms page with AJAX. Is there a way to get the ScriptManager to execute and process a script for a web service request during an async postback? I have a script on the page that makes a web service request. It runs on page load and periodically using setInterval(). It's running correctly before the async postback is initiated, but it stops running during the async postback, and doesn't run again until after the async postback completes. I have an UpdatePanel with a button to trigger an async postback, which executes the long-running task. I also have an instance of an AJAX WCF Web service that is working correctly to fetch data and present it on the page but, like I said, it doesn't fetch and present the data until after the async postback completes. During the async postback, the long-running task sends updates from the page to the web service. The problem is that I can debug and step through the web service and see that the status updates are correctly set, but the updates aren't retrieved by the client script until the async postback completes. It seems the Script Manager is busy executing the async postback, so it doesn't run my other JavaScript via setInterval() until the postback completes. Is there a way to get the Script Manager, or otherwise, to run the script to fetch data from the WCF web service during the async postback? I've tried various methods of using the PageRequestManager to run the script on the client-side BeginRequest event for the async postback, but it runs the script, then stops processing the code that should be running via setInterval() while the page request executes.

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• How to pass a reference to a JS function as an argument to an ExternalInterface call?

  - by Ryan Wilson

  Summary I want to be able to call a JavaScript function from a Flex app using ExternalInterface and pass a reference to a different JavaScript function as an argument. Base Example Given the following JavaScript: function foo(callback) { // ... do some stuff callback(); } function bar() { // do some stuff that should happen after a call to foo } I want to call foo from my flex app using ExternalInterface and pass a reference to bar as the callback. Why Really,foo is not my function (but, rather, FB.Connect.showBookmarkDialog), which due to restrictions on Facebook iframe apps can only be called on a button click. My button, for design reasons, is in the Flex app. Fortunately, it's possible to call ExternalInterface.call("FB.Connect.showBookmarkDialog", callback) to display the bookmark dialog. But, FB.Connect.showBookmarkDialog requires a JS callback so, should I want to receive a callback (which I do), I need to pass a reference to a JS function as the single argument. Real Example MXML: <mx:Button click="showBookmarkDialog();" /> ActionScript: function showBookmarkDialog() : void { ExternalInterface.registerCallback( "onBookmarkDialogClosed", onBookmarkDialogClosed ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", /* ref to JS function onBookmarkDialogClosed ? */ ); } function onBookmarkDialogClosed(success:Boolean) : void { // sweet, we made it back } JavaScript: function onBookmarkDialogClosed() { var success; // determine value of success getSWF().onBookmarkDialogClosed(success); } Failed Experiments I have tried... ExternalInterface.call( "FB.Connect.showBookmarkDialog", "onBookmarkDialogClosed" ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", onBookmarkDialogClosed ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", function() : void { ExternalInterface.call("onBookmarkDialogClosed"); } ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", function() { this["onBookmarkDialogClosed"](); } ); Of note: Passing a string as the argument to an ExternalInterface call results in FB's JS basically trying to do `"onBookmarkDialogClosed"()` which, needless to say, will not work. Passing a function as the argument results in a function object on the other side (confirmable with `typeof`), but it seems to be an empty function; namely, `function Function() {}`

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• Generic wrapper for System.Web.Caching.Cache functions

  - by David Neale

  I've created a generic wrapper for using the Cache object: public class Cache<T> where T : class { public Cache Cache {get;set;} public CachedKeys Key {get;set;} public Cache(Cache cache, CachedKeys key){ Cache = cache; Key = key; } public void AddToCache(T obj){ Cache.Add(Key.ToString(), obj, null, DateTime.Now.AddMinutes(5), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null); } public bool TryGetFromCache(out T cachedData) { cachedData = Cache[Key.ToString()] as T; return cachedData != null; } public void RemoveFromCache() { Cache.Remove(Key.ToString()); } } The CachedKeys enumeration is just a list of keys that can be used to cache data. The trouble is, to call it is quite convuluted: var cache = new Cache<MyObject>(Page.Cache, CachedKeys.MyKey); MyObject myObject = null; if(!cache.TryGetFromCache(out myObject)){ //get data... cache.AddToCache(data); //add to cache return data; } return myObject; I only store one instance of each of my objects in the cache. Therefore, is there any way that I can create an extension method that accepts the type of object to Cache and uses (via Reflection) its Name as the cache key? public static Cache<T> GetCache(this Cache cache, Type cacheType){ Cache<cacheType> Cache = new Cache<cacheType>(cache, cacheType.Name); } Of course, there's two errors here: Extension methods must be defined in a non-generic static class The type or namespace name 'cacheType' could not be found This is clearly not the right approach but I thought I'd show my working. Could somebody guide me in the right direction?

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• Getting a ResultSet/RefCursor over a database link

  - by JonathanJ

  From the answers to http://stackoverflow.com/questions/1122175/calling-a-stored-proc-over-a-dblink it seems that it is not possible to call a stored procedure and get the ResultSet/RefCursor back if you are making the SP call across a remote DB link. We are also using Oracle 10g. We can successfully get single value results across the link, and can successfully call the SP and get the results locally but we get the same 'ORA-24338: statement handle not executed' error when reading the ResultSet from the remote DB. My question - is there any workaround to using the stored procedure? Is a shared view a better solution? Piped rows? Sample Stored Procedure: CREATE OR REPLACE PACKAGE BODY example_SP IS PROCEDURE get_terminals(p_CD_community IN community.CD_community%TYPE, p_cursor OUT SYS_REFCURSOR) IS BEGIN OPEN p_cursor FOR SELECT cd_terminal FROM terminal t, community c WHERE c.cd_community = p_CD_community AND t.id_community = c.id_community; END; END example_SP; / Sample Java code that works locally but not remotely: Connection conn = DBConnectionManagerFactory.getDBConnectionManager().getConnection(); CallableStatement cstmt = null; ResultSet rs = null; String community = "EXAMPLE"; try { cstmt = conn.prepareCall("{call example_SP.get_terminals@remote_address(?,?)}"); cstmt.setString(1, community); cstmt.registerOutParameter(2, OracleTypes.CURSOR); cstmt.execute(); rs = (ResultSet)cstmt.getObject(2); while (rs.next()) { LogUtil.getLog().logInfo("Terminal code=" + rs.getString( "cd_terminal" )); } }

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• finding "line-breaks" in textarea that is word-wrapping ARABIC text

  - by Irfan jamal

  I have a string of text that I display in a textarea (right-to-left orientation). The user can resize the textarea dynamically (I use jquery for this) and the text will wrap as necessary. When the user hits submit, I will take that text and create an image using PHP, BUT before submitting I would like to know where the "line-breaks" or rather "word-wraps" occur. Everywhere I have looked so far only shows me how to process line-breaks on the php side. I want to make it clear that there ARE NO LINE-BREAKS. What I have is one LONG string that will be word-wrapped in different ways based on the width of the textarea set by the user. I can't use "columns" or any other standard width representation because I have a very complex arabic font that is actually composed of glyphs (characters) of numerous different widths. If anyone knows of a way of accessing where the word wraps occur (either in a textarea or a div if need-be), I'd really like to know. My only other solution is to actually store (in my DB) the width of every single character (somewhat tedious since there are over 200 characters in 600 different fonts, for a total of...some huge number). My hopes aren't high, but I thought I would ask. Thanks i. jamal

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• Post on a logged in users facebook wall

  - by Matt Nathanson

  Hey all, I've created a widget that will essentially unlock a music track, providing you post to either your twitter account, or facebook wall. I've signed up through facebook connect and I am able to successfully post onto my own wall... but the functionality I'm looking for is to be able to take ones username and password and automatically log in to facebook, and send my desired message. Like I said, it posts on my wall successfully, it's just not using the username and password from the field to log in to their respective facebooks and post. <?php $facename = $_POST['facename']; $facepass = $_POST['facepass']; define('FB_APIKEY', 'my_api_key'); define('FB_SECRET', 'my_secret_phrase_'); define('FB_SESSION', 'my_session_id'); require_once('facebook.php'); echo "post on wall"; try { $facebook = new Facebook(FB_APIKEY, FB_SECRET); $facebook->api_client->session_key = FB_SESSION; $fetch = array('friends' => array('pattern' => '.*', 'query' => "select uid2 from friend where uid1={$facename}")); echo $facebook->api_client->admin_setAppProperties(array('preload_fql' => json_encode($fetch))); $message = 'I downloaded Automatic Loveletter\'s new single \'To Die For\' here!'; if( $facebook->api_client->stream_publish($message)) echo "Added on FB Wall"; } catch(Exception $e) { echo $e . "<br />"; } ?> Any help in the right direction is greatly appreciated! Thanks, Matt

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• Blueprint CSS and Separation of Presentation and Content When Designing Forms

  - by Merritt

  Is it possible to use Blueprint CSS and maintain a a respectable level of separation between presentation and content? I like how easy the framework is to use when designing forms, but am worried that the manner in which I use the css classes for columnizing elements is a bad practice. For instance, say I have a 3 field form designed using blueprint: <div class="container"> <form action="" method="post" class="inline"> <fieldset> <legend>Example</legend> <div class="span-3"> <label for="a">Label A:</label> <input type="text" class="text" id="a" name="a" > </div> <div class="span-2"> <label for="b">Label B:</label> <input type="text" class="text" id="b" name="b" > </div> <div class="span-3"> <label for="o">Label O:</label> <input type="checkbox" id="o" name="o" value="true" checked="checked" class="checkbox">checkbox one </div> <div class="span-2 last"> <input type="submit" value="submit" class="button"> </div> </fieldset> </form> </div> Is using a class attribute with names like "span-2", "inline", and "last" a bad practice? Or am I missing the point?

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• Reusing service proxies

  - by Hadi Eskandari

  I have a set of webservices that I connect to using Silverlight Client. I use proxies generated by "Add service reference" or SLSVCUTIL.exe tool to connect to this service. So far, I have only used one single service. Now I want to use another service on the same server. The problem is that, first service generated set of proxy classes for me, and second service will reuse the same set of classes (plus extra services/classes), e.g. CustomerService.SaveCustomer(Customer customer); OrderService.CheckCustomerLevel(Customer customer); The problem is when I add reference to the second service, I can not reuse the same namespace for the second one (VS error), and when I use a different namespace, the generated classes, although are essentially the same, reside in different namespace, hence different and I end up with two Customer classes in two different namespaces. Anyway around this? I just neeed to have two set of services, reusing the Customer class. I have already tried "reuse types in assembly / all assemblies" check mark when generating proxy classes, but it seems to have no effect. any help is greatly appreciated.

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