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• Getting Permissions error while using stream.publish method of facebook API

  - by tek3

  Hi I want to publsh a post on user's wall but am getting this "permission error" error code 200 when trying to use stream.publish method of facebook api...i hve requested for extended permissions as: http://m.facebook.com/login.php?api%5Fkey="+API_KEY&....&req_perms=read_stream,publish_stream,offline_access but when i make call to the method stream.publish i am getting this permission error..it seems that req_perms in above url is simply getting ignored.. i am passing "method(stream.publish)","api_key","message","session_key","v","sig" as parametres to url http://api.facebook.com/restserver.php? will be greatful if anyone helps meout in this problem or provide me with proper steps for publishing a post on user's wall...the application is being developed on blackbery platform..

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• Outer Join is not working in Linq Query: The method 'Join' cannot follow the method 'SelectMany' or is not supported

  - by Scorpion

  I am writing the Linq query as below: But on run its throwing the following error: The method 'Join' cannot follow the method 'SelectMany' or is not supported. Try writing the query in terms of supported methods or call the 'AsEnumerable' or 'ToList' method before calling unsupported methods. LINQ from a in AccountSet join sm in new_schoolMemberSet on a.AccountId equals sm.new_OrganisationId.Id into ps from suboc in ps.DefaultIfEmpty() join sr in new_schoolRoleSet on suboc.new_SchoolRoleId.Id equals sr.new_schoolRoleId where sr.new_name == "Manager" where a.new_OrganisationType.Value == 430870007 select new { a.AccountId, a.new_OrganisationType.Value } I am expecting the result as below: I never used the Outer join in Linq before. So please correct me if I am doing it wrong. Thanks

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• Spring AOP: how to get the annotations of the adviced method

  - by hubertg

  I'd like to implement declarative security with Spring/AOP and annotations. As you see in the next code sample I have the Restricted Annotations with the paramter "allowedRoles" for defining who is allowed to execute an adviced method. @Restricted(allowedRoles="jira-administrators") public void setPassword(...) throws UserMgmtException { // set password code ... } Now, the problem is that in my Advice I have no access to the defined Annotations: public Object checkPermission(ProceedingJoinPoint pjp) throws Throwable { Signature signature = pjp.getSignature(); System.out.println("Allowed:" + rolesAllowedForJoinPoint(pjp)); ... } private Restricted rolesAllowedForJoinPoint(ProceedingJoinPoint thisJoinPoint) { MethodSignature methodSignature = (MethodSignature) thisJoinPoint.getSignature(); Method targetMethod = methodSignature.getMethod(); return targetMethod.getAnnotation(Restricted.class); } The method above always returns null (there are no annotations found at all). Is there a simple solution to this? I read something about using the AspectJ agent but I would prefer not to use this agent.

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• gmaps4rails version 2 build method

  - by BrainLikeADullPencil

  I installed gmaps4rails for my Rails app, ran the generator, and required the two files like this in my application.js file, along with underscore.js //= require underscore //= require gmaps4rails/gmaps4rails.base //= require gmaps4rails/gmaps4rails.googlemaps adding, as instructed on github https://github.com/apneadiving/Google-Maps-for-Rails, these dependencies in layout.html.erb When I tried to create the demo map from the github page with this code, I got an error that the object doesn't have a build method. Uncaught TypeError: Object # has no method 'build' handler = Gmaps.build('Google'); handler.buildMap({ provider: {}, internal: {id: 'map'}}, function(){ markers = handler.addMarkers([ { "lat": 0, "lng": 0, "picture": { "url": "https://addons.cdn.mozilla.net/img/uploads/addon_icons/13/13028-64.png", "width": 36, "height": 36 }, "infowindow": "hello!" } ]); handler.bounds.extendWith(markers); handler.fitMapToBounds(); }); Indeed, when I look inside the base file that I require in the manifest file there is no build method for that object. How does one create a map in the new version for gmaps4rails?

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• SCJP question: Method ambiguous

  - by Markos Fragkakis

  Take a look at this code: public class Test { public static void main(String... args) { flipFlop("hello", new Integer(4), 2004); // flipFlop("hello", 10, 2004); // this works! } private static void flipFlop(String str, int i, Integer iRef) { System.out.println(str + " (String, int, Integer)"); } private static void flipFlop(String str, int i, int j) { System.out.println(str + " (String, int, int)"); } } The compiler gives an error that the invocation is ambiguous: Description Resource Path Location Type The method flipFlop(String, int, Integer) is ambiguous for the type Test Test.java scjp19 - inheritence/src line 3 Java Problem But if the commented-out line is used ti invoke flip-flop, the method is unambiguously invoked (the second one, because autoboxing comes after using the primitive itself). I would expect the compiler to see that the second argument will be unboxed one way or the other, and judge what method must be invoked depending on the third argument. Why does not this happen? What is the rationale?

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• C# can I lock a method parameter?

  - by 5YrsLaterDBA

  We have a class variable ArrayList binaryScanData in a class. In all methods having access to it, we put lock(binaryScanData) on it because it is shared. Now we want to move one of those methods out to another util class to make it a static method. We will pass that binaryScanData into the method like this: public static void convertAndSaveRawData(ref MemoryStream output, ref ArrayList binaryScanData) Our questions are followed: how can we sychoronize that binaryScanData? can we do the same as it is originally? ref is necessary? It will only be read in that convertAndSaveRawData method.

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• Capture Touch Event on UITableViewCell and after enter didSelectRowAdTindePath method

  - by Luca

  Hi I want to personalize my UITableView changing background when user tap on a specific cell. I've a dedicated ViewController for each cell and if I implement touchesBegan method in this viewController i can change my cell background without any problem. The problem is that the method "didSelectRowAtIndexPath" of the UITableView is no longer called. How can I call it manually? I am in another viewController and I have no access to that method. or how can propagate to the touch tableView? Thanks a lot

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• Async actions inside Silverlight Method - returning the value

  - by tyndall

  What is the proper way to call an Async framework component - wait for an answer and then return the value. AKA contain the entire request/response in a single method. Example code: public class Experiment { public Experiment() { } public string GetSomeString() { WebClient wc = new WebClient(); wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_DownloadStringCompleted); Uri u = new Uri("http://news.google.com/news?pz=1&cf=all&ned=us&hl=en&topic=t&output=rss"); wc.DownloadStringAsync(u); return "the news RSS from Google"; } private void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e) { //don't really see how this callback method makes it able // to return the answer I'm looking for on the return // statement in the method above. } } MORE INFO: The reason I'm asking this that I have a project I'm working on where I'd like JavaScript code in the browser to use Silverlight like a Facade/Proxy to Web services and complex calculations & operations. I'd like to make the calls to the [ScriptableMembers] in Silvelight synchronously. I don't want Silverlight to callback into the browser's JavaScript

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• Removing duplicates without overriding hash method

  - by Javi

  Hello, I have a List which contains a list of objects and I want to remove from this list all the elements which have the same values in two of their attributes. I had though about doing something like this: List<Class1> myList; .... Set<Class1> mySet = new HashSet<Class1>(); mySet.addAll(myList); and overriding hash method in Class1 so it returns a number which depends only in the attributes I want to consider. The problem is that I need to do a different filtering in another part of the application so I can't override hash method in this way (I would need two different hash methods). What's the most efficient way of doing this filtering without overriding hash method? Thanks

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• iPhone: NSAlert Delegate Method Never Called

  - by Marco

  Hello, I have implemented an NSAlert but the delegate method didDissmissWithButton is never called. This code evokes the NSAlert: NSString *title = [NSString stringWithFormat:@"Keine Internetverbindung"]; NSString *alertMessage = [NSString stringWithFormat:@"Es konnte keine Verbindung zu www.sip.de aufgebaut werden!"]; NSString *ok = [NSString stringWithFormat:@"Ok"]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage delegate:self cancelButtonTitle:ok otherButtonTitles:nil]; [alert show]; [alert release]; and this is the NSAlert delegate method: - (void)alertView:(UIAlertView *)alertView didDisMissWithButtonIndex:(NSInteger)buttonIndex{ exit(3); } The method is never called, what is my mistake?

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• Javascript calling JSF handler method

  - by msharma

  Hi All, I am reading an xml file using javascript and then I need to submit my form so that it calls a particular method in my JSF handler. Usually this can be done on a jsp when user clicks a button by having an actionlistener like so: <h:commandLink styleClass="button" action="#{myHandler.outcome}" actionListener="#{myHandler.doNext}"> <span><h:outputText value="#{text.button_submit}" /></span> </h:commandLink> I am not sure how to call a method like 'doNext' above in the handler from javascript. I cannot do a simple: document.form.submit(); as it then repeats the processing i have already done. I want to read values from an xml file and then call a particular method in handler. Any ideas much appreciated.

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• WMI: Create Method of the Win32_Service Class

  - by Marco

  Hello, I'm trying to use the Create method of the Win32_Service class, but when I call the InvokeMethod, I receive this exception: System.Management.ManagementException: Invalid method at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObject.InvokeMethod(String methodName, ManagementBaseObject inParameters, InvokeMethodOptions options) at <StartupCode$FSI_0075>.$FSI_0075.main@() This is the code (in F# but it is understable for C# programmers too :)): let scope = new ManagementScope(@"root\cimv2", null) use imageService = Utility.getServiceObject scope "Win32_Service" use inParams = imageService.GetMethodParameters("Create") inParams.["Name"] <- name inParams.["DisplayName"] <- displayName inParams.["PathName"] <- pathName inParams.["ServiceType"] <- 0x10 // Own Process inParams.["ErrorControl"] <- 0 // User is not notified inParams.["StartMode"] <- "Automatic" inParams.["DesktopInteract"] <- false inParams.["StartName"] <- "LocalSystem" inParams.["StartPassword"] <- "" inParams.["ServiceDependencies"] <- null use outParams = imageService.InvokeMethod("Create", inParams, null) The exception is thrown when the last line is executed (I removed the next lines). I think I'm calling correctly the method, so I don't know why the exception is thrown. Can anyone help me? Thanks in advance, Marco

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• How to override equals method in java

  - by Subash Adhikari

  I am trying to override equals method in java. I have a class People which basically has 2 data fields name and age. Now I want to override equals method so that I can check between 2 People objects. My code is as follows public boolean equals(People other){ boolean result; if((other == null) || (getClass() != other.getClass())){ result = false; } // end if else{ People otherPeople = (People)other; result = name.equals(other.name) && age.equals(other.age); } // end else return result; } // end equals But when I write age.equals(other.age) it gives me error as equals method can only compare String and age is Integer. Please help me fix this. Thanks is Advance.

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• Can somebody explain this Objective C method declaration syntax

  - by Doug R

  I'm working through an iPhone development book* without really knowing Objective C. For the most part I'm able to follow what's going on, but there are a few method declarations like the one below that I'm having a bit of trouble parsing. For example: - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger) section { return [self.controllers count]; //controllers is an instance variable of type NSArray in this class } It looks this is a method called numberOfRowsInSection, and it returns an NSInteger, and takes an NSInteger as a parameter which is locally called 'section'. But I don't understand all the references to tableView, or why this takes a parameter when it is not used within the method. Can somebody clarify this? Thanks. *p. 258, Beginning iPhone 3 Development, by Mark and LaMarche, published by Apress

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• Making an Ajax request to a page method in ASP.NET MVC 2

  - by JLago

  I'm trying to call a page method belonging to a MVC Controller from another site, by means of: $.ajax({ type: "GET", url: "http://localhost:54953/Home/ola", data: "", contentType: "application/json; charset=utf-8", dataType: "json", success: function(data) { console.log(data.Name); } }); the method code is as follows, really simple, just to test: public ActionResult ola() { return Json(new ActionInfo() { Name = "ola" },JsonRequestBehavior.AllowGet); } I've seen this aproach being suggested here, and I actually like it a lot, should it work... When I run this, firebug gets a 200 OK, but the data received is null. I've tried a lot of different approaches, like having the data in text (wish grants me "(an empty string)" instead of just "null") or returning string in the server method... Can you tell me what am I doing wrong? Thank you in advance, João

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• Calling a method from within a django model save() override

  - by Jonathan

  I'm overriding a django model save() method. Within the override I'm calling another method of the same class and instance which calculates one of the instance's fields based on other fields of the same instance. class MyClass(models.Model): field1 = models.FloatField() field2 = models.FloatField() field3 = models.FloatField() def calculateField1(self) self.field1 = self.field2 + self.field3 def save(self, *args, **kwargs): self.calculateField1() super(MyClass, self).save(*args, **kwargs) The override method is called when I change the model in admin. Alas I've discovered that within calculateField1() field2 and field3 have the values of the instance from before I edited them in admin. If I enter the instance again in admin and save again, only then field1 receives the correct value as field2 and field3 are already updated. Is this the correct behavior on django's side? If yes, then how can I use the new values within calculateField1? I cannot implement the calculation within the save() as calculateField1() actually quite long and I need it to be called from elsewhere.

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• The method split(String) is undefined for the type String

  - by pi

  I am using Pulse - the Plugin Manager for Eclipse and installed. I have the Eclipse 3.5 for mobile development(Pulsar) profile with a couple other profiles. I realized that the split() method called on a string from code such as below: String data = "one, two, three, four"; data.split(","); generates the error: "The method split(String) is undefined for the type String". I am aware that the split() method did not exist before Java's JRE 1.4 and perhaps could be the cause of the problem. The problem is I don't think I have jre/sdk versions installed. Perhaps there's one in-built with the Pulsar profile and needs editing - but I couldn't tell what settings (and where) needs tweaking. I have checked WindowsPreferencesJavaInstalled JREs and it's set to = jre1.4. Please help thanks.

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• Which method of creating javascript objects is better?

  - by Germaine

  I've seen objects defined in two different ways, which function similarly, but are, of course, fundamentally different. You can do it either like this: var myobject = {property: 'hello', act: function() { this.property += ' world'; }}; and like this: function myobject() { this.property = 'hello'; this.act = function() { this.property += 'world'; } } The second method could create objects like so var newobj = new myobject(); but you could do something similar using the first notation by making the object the return value of a function. The new keyword has the advantage of being able to pass parameters that can be used to initialize the properties of the object, but you could just as easily add an init function to the first kind of object. Just wondering if besides these two differences, if there was a fundamental difference that made one method definitely better than the other method.

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• JQuery .html() method and external scripts

  - by Marco

  Hi, i'm loading, using the JQuery ajax() method, an external page with both html and javascript code: <script type="text/javascript" src="myfile.js"></script> <p>This is some HTML</p> <script type="text/javascript"> alert("This is inline JS"); </script> and setting the results into a div element, using the html() method. While the html() method properly evaluates the inline JS code, it doesn't download and evaluate the external JS file "myfile.js". Any tip for this issue?

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• Method in ICollection in C# that adds all elements of another ICollection to it

  - by drasto

  Is there some method in ICollection in C# that would add all elements of another collection? Right now I have to always write foreach cycle for this: ICollection<Letter> allLetters = ... //some initalization ICollection<Letter> justWrittenLetters = ... //some initalization ... //some code, adding to elements to those ICollections foreach(Letter newLetter in justWrittenLetters){ allLetters.add(newLetter); } My question is, is there method that can replace that cycle? Like for example the method addAll(Collection c) in Java ? So I would write only something like: allLetters.addAll(justWrittenLetters);

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• "SecondViewController" may not respond to '-updatePlayerQueueWithMedia:' Messages without a matching

  - by Pavan

  I don't understand whats happening I get a warning that says "SecondViewController" may not respond to '-updatePlayerQueueWithMedia:' Messages without a matching signature will be assumed to return 'id' and accept '...' as arguments. this is my method - (void)mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems: (MPMediaItemCollection *) mediaItemCollection { [self dismissModalViewControllerAnimated: YES]; [self updatePlayerQueueWithMediaCollection: mediaItemCollection]; } And the actual method which ive written in the same page is - (void) updatePlayerQueueWithMediaCollection: (MPMediaItemCollection *) mediaItemCollection { //and shit happens here. } I don't understand whats happening can someone please help me get rid of this warning.

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• Why is it preferable to call a static method statically from within an instance of the method's clas

  - by javanix

  If I create an instance of a class in Java, why is it preferable to call a static method of that same class statically, rather than using this.method()? I get a warning from Eclipse when I try to call static method staticMethod() from within the custom class's constructor via this.staticMethod(). public MyClass() { this.staticMethod(); } vs public MyClass() { MyClass.staticMethod(); } Can anyone explain why this is a bad thing to do? It seems to me like the compiler should already have allocated an instance of the object, so statically allocating memory would be unneeded overhead.

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• No method found compiler warning

  - by Magic Bullet Dave

  I have create a class from a string, check it is valid and then check if it responds to a particular method. If it does then I call the method. It all works fine, except I get an annoying compiler warning: "warning: no '-setCurrentID:' method found". Am I doing something wrong here? Is there anyway to tell the compiler all is ok and stop it reporting a warning? The here is the code: // Create an instance of the class id viewController = [[NSClassFromString(class) alloc] init]; // Check the class supports the methods to set the row and section if ([viewController respondsToSelector:@selector(setCurrentID:)]) { [viewController setCurrentID:itemID]; } // Push the view controller onto the tab bar stack [self.navigationController pushViewController:viewController animated:YES]; [viewController release]; Cheers Dave

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• Using Server side method from Javascript without AJAX

  - by Aswin Ramakrishnan

  I have a tricky problem. I am in a situation where I need to use a method defined in a .cs file from a javascript function. The problem is we are using .NET 1.1 and AJAX cannot be used for the application. Also, I will need to pass a string from the javascript to the server side method. The page where I am implementing the javascript is a .as Any ideas? I have tried doing a post back and creating a RaisePostBack event handler method (both in the .aspx page and the .ascx user control) but no luck. It will be greatly appreciated if someone could help me out with the problem.

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• REG GENERIC METHOD

  - by googler1

  Hi buddies, I had a thought on using the generic method in c# as like we do in c++. Normally a method looks like this: public static (void/int/string) methodname((datatype) partameter) { return ...; } I had a thought whether can we implement the generics to this method like this: public static <T> methodname(<T> partameter) { return ...; } Using as a generic to define the datatype. Can anyone pls suggest whether the above declaration is correct and can be used in c#? Thanks in advance.

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