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• Create and Call an ASP.NET Asynchronous Web Service and call it from JavaScript

  - by nickyt

  Environment: ASP.NET web applicaition jQuery, ASP.NET AJAX Currently using ASP.NET Web Services The title says it all. One, how do i create an ASP.NET web service that is asynchronous? I've seen many articles, that show example with IAsyncResult and BeginMyWebServiceMethod and EndMyWebServiceMethod, some using ThreadPool etc. I would just like to know what is the simplest way to make an asynchronous web service method call (ideally without having to implement other classes, if possible). To me it should be as simple as adding an attribute to the method (but I think that is wishful thinking), e.g. public SomeWebService : WebService { [Asynchronous] public static bool SomeCheck() { // code } } I'm open to using WCF if that makes it easier (we converted to ASP.NET 3.5 around Christmas time). Once I have the asynchronous web service created, what is the best way to call it from client-side script? Via jQuery's $ajax or ASP.NET's auto generated class for a web service that is script method?

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• FLVParser problem

  - by mujer-esponja

  Hi! I am using apache tika 7.0, one of the classes, called FLVParser, which is used to extrac metadata from videos. But, when i try to use one of the methos in the class, i get this error in Eclipse: Multiple markers at this line Syntax error on token "parse", Identifier expected after this token Syntax error on token(s), misplaced construct(s) I don't know exactly the meaning of this, and i don't know how to continue. I add the poiece of code also: FLVParser VideoParser = new FLVParser(); VideoParser.parse(); //Here is the error message Any ideas, please?? I made the imports in the right way and the mave dependencies are right aswell. Thanks in advance!

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• Problem with assigning elements of a class array to individual variables in MATLAB

  - by Marc

  This is a bit of a duplicate of this question, this question, and this question, however those solutions don't work, so I'm asking mine. I've got an array of locally defined classes and I'd like to assign it to multiple, individual variables. This pattern doesn't work: %a is 2x1 of MyClass temp = mat2cell(a); [x,y] = temp{:}; %throws: ??? Insufficient number of outputs from right hand side of equal sign to satisfy assignment. Because temp is a single cell, with my 2x1 array in one cell, rather than a 2x1 cell array with one element of each of my original array in one cell. Any ideas?

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• Sort and Group in LINQ

  - by Jono

  I apologise in advance if this has been answered before; it seems so fundamental to me yet I haven't turned up the answer in any of my searches. I have a list of string tuples, say (P1,P2) I'd like to know if there's a LINQ statement where I could group by P1 (in ascending order), and have that group contain all the P2 values for the group (in descending order). For input: ("A","B"), ("A","C"), ("D","B") I'd like to get two groups: "A" and "D" (in that order, every time) where group "A" contains "C" and "B" (in that order, every time) and group "D" contains, well, "B". Is this possible with the built-in LINQ classes or do I need to iterate the groups and sort them myself? Sounds like hard work~

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• Reverting back to previous ADT plugin

  - by sdfwer

  Now I was wondering if anyone has been able to accomplish reverting to a previous ADT plugin. The reason for this is because I am using an open source jar and I am getting the following errors on my LogCat such as: unable to resolve virtual method unable to find class referenced in signature unable to resolve new-instance The effect of this causes an error on running my android application on the debugger. I was using android ADT 15 before now I am updated to 17. Please help on finding a solution to resolve the issue. Edit* Forgot to add in The error "java.lang.NoClassDefFoundError". In simple terms it can't find classes or methods the attached jar even though it allows it.

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• Extending Windows Desktop using C#

  - by Lijo

  Hi Team, I am trying to customize my Windows XP’s desktop using C# code. This is my first venture of this kind. Could you please point me to some documentation that will Give the names of classes that can be used for extending/customizing Windows’ desktop Some example code What I am trying to do specifically is as follows I am planning to customize the desktop. When I unlock my computer (by entering user name and password) the files should come(by flying) into their required places. Initially the files are to be located in the right end corner. Thanks Lijo Cheeran Joseph

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• Transactions in hibernate

  - by kumar1425

  Hi I new to hibernate In my project, i need to handle transactions. How to handle declarative transactions with in two classes Examples: //class 1 class A{ createA() { insert(A); } } //class 2 class B { createB() { insert(B); } } //class 3 @Transaction(Exception.class) class C { test() { create(A); create(B); } } As per the above code is there any possibility to handle transactions, in such a way that if the insert in classA success and the insert in the classB fails then the transaction should rollback and remove the record inserted in the table A corresponding to the Class A please help me with this using declarative transactions.... Thanks in adavace....

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• XSS as attack vector even if XSS data not stored?

  - by Klaas van Schelven

  I have a question about XSS Can forms be used as a vector for XSS even if the data is not stored in the database and used at a later point? i.e. in php the code would be this: <form input="text" value="<?= @$_POST['my_field'] ?>" name='my_field'> Showing an alert box (demonstrate that JS can be run) on your own browser is trivial with the code above. But is this exploitable across browsers as well? The only scenario I see is where you trick someone into visiting a certain page, i.e. a combination of CSRF and XSS. "Stored in a database and used at a later point": the scenario I understand about CSS is where you're able to post data to a site that runs JavaScript and is shown on a page in a browser that has greater/different privileges than your own. But, to be clear, this is not wat I'm talking about above.

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• I need help translating this portion of the ECMAScript grammar?

  - by ChaosPandion

  I've been working on my own implementation of ECMAScript for quite some time now. I have basically done everything by hand to help gain a deep understanding of the process. Repeated attempts to analyze and understand this portion of the grammar have failed so I've been working on the run time instead. Now I am at a point were I will be working on object literals so I really need to polish my syntactic analyzer. Can anyone put this in terms a language parser novice could understand? My biggest source of confusion is the following: new MemberExpression Arguments This is supposed to be a member expression, but this seemingly conflicts with the following: NewExpression : MemberExpression new NewExpression Is a new expression a member expression or a left hand side expression? To be honest I am having trouble laying out the proper C# classes for the concrete grammar. MemberExpression : PrimaryExpression FunctionExpression MemberExpression [ Expression ] MemberExpression . IdentifierName new MemberExpression Arguments NewExpression : MemberExpression new NewExpression CallExpression : MemberExpression Arguments CallExpression Arguments CallExpression [ Expression ] CallExpression . IdentifierName LeftHandSideExpression : NewExpression CallExpression

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• Migrating from Forms to WPF

  - by Jason Williams

  We're considering migrating a WinForms app to WPF, but are just starting on the WPF learning curve now that 4.0 is out. What I'd like to do is migrate our application commands (cut, copy, paste, etc) to a WPF-like command-binding system, while still running as a WinForms app - but in such a way as to make the migration easy when we go ahead with WPF. The ideal approach would be to implement our commands using the WPF command interfaces, classes and events directly, and simply hooking the WinForms events up to them with our own dispatcher. Has anyone tried something like this or know if it might be possible?

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• What is the relationship between IRimTable and PersistenceStore?

  - by Martin

  The BlackBerry Desktop API has the interface IRimTable which apparently maps an "application database" on a BlackBerry device to a virtual structure (i.e, IRimTable has IRimRecords, each of which has IRimField) that developer can browse the handheld device data when it is connected to a desktop computer. Meanwhile, applications in the handheld device can store its data in PersistenceStore databases. The point where I'm stuck is the PersistenceStore API doesn't define any Table or Records or Fields. Does anybody knows what is the relationship between these two classes? And how does the mapping work (if at all) ?

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• Pure-JavaScript projects in NetBeans?

  - by Matt Zukowski

  This seems like it ought to be obvious, yet I can't figure it out. I do a lot of JavaScript coding, and I really like NetBeans. Unfortunately I can't figure out how to create a "JavaScript" project in NetBeans. If I go to File - New Project, my only options are "Java", "Ruby", and "NetBeans Modules". I don't want any of these. My project consists mostly of JavaScript, with a little bit of CSS. I ususally just end up creating a "Ruby" project, but this seems retarded, since I don't actually have any Ruby code. Why isn't there an option to create a "JavaScript" or "Web" project, or at least a "Generic" project that doesn't revolve around a specific language? Am I missing something here?

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• Using XSL-FO and HTML?

  - by buggy1985

  Hi, I'm trying to transform some XML-data to HTML with XSLT for my bachelor thesis. My professor wants me to consider XSL-FO too, or at least to write some word about it. But I'm very noob to this. So my questions are: Can I combine FO with HTML? Can I use FO istead of HTML and CSS? If yes, how will my browser render this? Are there any examples/tutorials on how to transform xml into web pages with FO? Thank you very much.

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• Process for linking static ObjC libraries in XCode

  - by madmik3

  I'm trying to link to a static library and I keep getting linker errors. I've found a few sites that post examples but I have not been able to see what I am doing wrong. First I create a project that will link to my lib add existing files find my .xcodeproj file select "Copy items into destination groups folder"... Select my host project as Add To Targets. Then I add a direct dependency to my host app expand targets double click MyHost.app click + under direct dependencies select my lib Then I set build flags double click MyHost application icon in Groups and Files. click the build tab then I set the OtherLinerFlag to -ObjC then I set Header Search Paths to my header file location for my static library. I pass the compile stage but any classes in my static lib cause linker error: literal-pointer@_OBJC@_cls_refs@SomeClass in MyHost.o thanks!

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• Generic Any/Attach/Add function for Entity Framework

  - by Matt Thrower

  Looking through my EF classes, they're littered with code that looks like this: if (_myContext.[EntityType].Any(d => d.RowId == dc.RowId)) { _myContext.[EntityType].Attach(dc); _myContext.Entry(dc).State = EntityState.Modified; } else { _myContext.[EntityType].Add(dc); } It's the same thing over and over, and is clearly itching to be handled by a generic function. However, I'm not sure how you'd go about handling the need for it to deal with a variety of unexpected entity types. A good example to get me started would be most appreciated.

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• Inject WCF proxy with credentials using StructureMap

  - by Steve Horn

  I have a service proxy generated by svcutil which generated an interface(IStudentContract) and a concrete type implementing (StudentContractClient). I'd like to have instances of StudentContractClient injected into my classes via StructureMap. My proxy also needs to have credentials supplied as seen in this passing unit test: <Test()> _ Public Sub Then_the_web_service_call_should_not_throw_an_exception() Dim studentServiceProxy As New StudentContractClient Dim credential As New NetworkCredential credential.Domain = ConfigurationManager.AppSettings("something") credential.UserName = ConfigurationManager.AppSettings("something") credential.Password = ConfigurationManager.AppSettings("something") studentServiceProxy.ClientCredentials.Windows.ClientCredential = credential Dim result = studentServiceProxy.GetCurrentTeachersByStudentSepid(26899) result.Count.ShouldEqual(4) End Sub My question is what would the structuremap configuration look like to have instances of IStudentContract injected with the credentials supplied? Thanks for any help!

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• Getting Prepared/Planning

  - by The.Anti.9

  For the first time, I am trying to create a rather large .NET project. I think the largest one I have made so far was about 6 classes, but this one is already at 14. For the section I'm starting to work on, I'm having some trouble putting everything together in my head, which is what I normally do. I think it's just a little too complex for that. I want to plan it out, and I want some way to visualize it and be able to play with it and manipulate the structure easily. Is there any sort of (free) program I can use to do this?

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• Ruby on Rails: How to find all items with a hash that contain a specific value...

  - by kingjeffrey

  Suppose I have three models: Student, SchoolClass, and DayOfWeek. There is a HABTM relationship between Student and SchoolClass, and between SchoolClass and DayOfWeek. What I'd like to do is find all school classes belonging to a given student that meet on Monday. Now I suppose I could do something like: @student = Student.find(:student_id) @student_classes = @student.school_classes.find(:all) @student_classes_on_monday = Array.new @student_classes.each do |student_class| if student_class.day_of_week.include?("Monday") @student_classes_on_monday << student_class end end But there has to be a more elegant way. Can you help me find it?

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• Django says the "id may not be NULL" but why is it?

  - by Oli

  I'm going crazy today. I just tried to insert a new record and it threw back a "post_blogpost.id may not be NULL" error. Here's my model: class BlogPost(models.Model): title = models.CharField(max_length=100) slug = models.SlugField(max_length=100) who = models.ForeignKey(User, default=1) when = models.DateTimeField() intro = models.TextField(blank=True, null=True) content = models.TextField(blank=True, null=True) counter = models.PositiveIntegerField(default=0) published = models.BooleanField(default=False) css = models.TextField(blank=True, null=True) class Meta: ordering = ('-when', 'id') There are a number of functions beneath the model too but I won't include them in full here. Their names are: content_cache_key, clear_cache, __unicode__, reads, read, processed_content. I'm adding through the admin... And I'm running out of hair.

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• Compiler doesn't find methods from base class

  - by Paul

  I am having a problem with my virtual methods in a derived class. Here are my (simplified) C++ classes. class Base virtual method accept( MyVisitor1* v ) { /*implementation is here*/ }; virtual method accept( MyVisitor2* v ) { /*implementation is here*/ }; virtual method accept( MyVisitor3* v ) { /*implementation is here*/ }; class DerivedClass virtual method accept( MyVisitor2* v ) { /*implementation is here*/ }; The following use causes VS 2005 to give: "error C2664: 'DerivedClass::accept' : cannot convert parameter 1 from 'Visitor1*' to 'Visitor2 *'". DerivedClass c; MyVisitor1 v1; c.accept(v1); I was expecting the compiler to find and call Base::accept(MyVisitor1) for my DerivedClass as well. Obviously this is not working, but I don't understand why. Any ideas? Thanks, Paul

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• Maximizing the number of threads to fully utilize all available resources without hindering overall

  - by Matt

  Let's say I have to generate a bunch of result files, and I want to make it as fast as possible. Each result file is generated independently of any other result file; in fact, one could say that each result file is agnostic to every other result file. The resources used to generate each result file is also unique to each. How can I dynamically decide the optimal number of threads to run simultaneously in order to minimize the overall run time? Is my only option to write my own thread manager that watches performance counters and adjust accordingly or does there exists some solid classes that already accomplish this?

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• Interface and base class mix, the right way to implement this

  - by Lerxst

  I have some user controls which I want to specify properties and methods for. They inherit from a base class, because they all have properties such as "Foo" and "Bar", and the reason I used a base class is so that I dont have to manually implement all of these properties in each derived class. However, I want to have a method that is only in the derived classes, not in the base class, as the base class doesn't know how to "do" the method, so I am thinking of using an interface for this. If i put it in the base class, I have to define some body to return a value (which would be invalid), and always make sure that the overriding method is not calling the base. method Is the right way to go about this to use both the base class and an interface to expose the method? It seems very round-about, but every way i think about doing it seems wrong... Let me know if the question is not clear, it's probably a dumb question but I want to do this right.

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• DocuSign Connect xsd [on hold]

  - by Brian

  I'm trying to parse xml inbound to our system from the DocuSign Connect service (which publishes status updates to a given web service). I typiclly use jaxb to process xml but as far as I know I need xsd's in order to generate the jaxb. I don't have (or can't find) xsd's from DocuSign in order to do this. I could use other java classes/libraries to parse the xml but without xsd's I'd have to guess at types, restrictions and formats. Is there a way to generate jaxb without having xsd's?

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• deserialization on client sied in Domain Service

  - by ankit

  i have 2 classes. Person and Contact. Person class has property named "ContactNumber" which returns the Contact type, and this property is marked as "Datamember" for serialization. i have marked Contact type as "DAtaContract". on client side i am able to get the values, but when i try to insert a value and then do submit, i get the below exception. Failed to deserialize change-set. Failed to convert value of type 'Dictionary`2' to type 'Contact' Stack Trace is: at System.Web.Ria.DataServiceSubmitRequest.GetChangeSet(DomainService domainService) at System.Web.Ria.DataServiceSubmitRequest.Invoke(DomainService domainService) at System.Web.Ria.DataService.System.Web.IHttpHandler.ProcessRequest(HttpContext context) can anyone give me the solution ?

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• Sparx Enterprise Architect conversion (from source to UML)

  - by user228938

  I need to make a UML class diagram for a project. I used Sparx Enterprise Architect in the past to generate source code from a diagram so I'm using that. The project is complete so all of the code is done and I don't really want to write all the classes / functions manually, so I was trying to generate the diagram from the source code but can't seem to find a way to do it. I searched online and on their website but nothing. Any help appreciated. Thanks in advance.

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