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• Can I call a com object from a referenced .net library in asp.net 3.5

  - by Alon Amir

  Hi, I'm using ASP.NET on C# and I have a referanced library in the same solution in VB which calls a COM object using CreateObject. When I run the site on my comp it works, when I run it on my IIS 6 it gives me a stackoverflow on the method call. Now I have a script wich runs the VB code on the IIS6 and it works just fine. It must be something with the ASP... How can I call Com objects within ASP..., Do I have to do something special? Pls help.

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• Compare two dates with JPA

  - by Kiva

  Hello everybody, I need to compare two dates in a JPQL query but it doesn't work. Here is my query: Query query = em.createQuery("SELECT h FROM PositionHistoric h, SeoDate d WHERE h.primaryKey.siteDb = :site AND h.primaryKey.engineDb = :engine AND h.primaryKey.keywordDb = :keyword AND h.date = d AND d.date <= :date ORDER BY h.date DESC"); My parameter date is a java.util.Date My query return a objects list but the dates are upper and lower to my parameter. Someone kown how to do this ? Thanks.

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• Can you do icon overlays using Java on Windows OS

  - by Saviz

  I would like to manupilate badges or icon overlays using Java on windows. Basically some files on the drive to have overlays depending what state those files are in. This should be visible through windows explorer. Something simillar to how DropBox does things. Is that possible? I've seen several articles on this topic but none of them use Java. They all seem to use C++ or C# or COM objects. I was looking for a Java solution for windows. Of course I'd like to have a Java solution on Mac's too. Not sure if this is possible but before I give up I thought I ask.

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• ASP.NET:Integrating many pages to one using jQuery UI dialog

  - by Shyju

  I have a four ASP.NET pages,Page 1.aspx,Page2.aspx,page3.aspx and page4.aspx.Normally the user will come to Page1 and then enter his data in the form elements.On clicking on the Go button Page 2 will come and so on up to page 4.Now i want to Integrate all of these items to A single page using jQuery LightBox/UI dialog modal popup.In my all pages i have server side code to do some Business logic.So I tried to Put the contents of page 2 in a panel and put it in the UI modal dialog and placed in page 1 and invoke the UI dialog from page 1 's button click.But my problem is I am not sure when i click on the button of the panel which is placed in the UI dialog, will trigger the server side code .I had some problems when i tried it earlier http://stackoverflow.com/questions/876660/asp-net-with-jqueryui-text-box-value-is-getting-as-null-in-button-click-event Please advice Thanks in advance

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• Silverlight 4.0 question - synchronous calls to asmx web service

  - by Anvar

  Hi, I have Silverlight problem. I have to deal with fairly large legacy application that has some web services exposed (regular asmx, not wcf). What I need to do is to build Silverlight app that consumes those web services. Due to business logic I need to have the same web method to be called from Silverlight app synchronously. I was able to build web services consumption but only asynchronously because that would be default Silverlight behavior. Is there a way to make asynchronous calls synchronous in Silverlight? I looked here and googled around but came across only wcf examples. I would appreciate if somebody would get me a code example for regular asmx web service. I use Silverlight 4.0. Thanks!

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• Looking for calculator source code, BSD-licensed

  - by Horace Ho

  I have an urgent project which need many functions of a calculator (plus a few in-house business rule formulas). As I won't have time to re-invent the wheel so I am looking for source code directly. Requirements: BSD licensed (GPL won't help) in c/c++ programming language 32-bit CPU minimum dependency on platform API/data structure best with both RPN and prefix notation supported emulator/simulator code also acceptable (if not impossible to add custom formula) with following functions (from wikipedia) Scientific notation for calculating large numbers floating point arithmetic logarithmic functions, using both base 10 and base e trigonometry functions (some including hyperbolic trigonometry) exponents and roots beyond the square root quick access to constants such as pi and e plus hexadecimal, binary, and octal calculations, including basic Boolean math fractions optional statistics and probability calculations complex numbers programmability equation solving

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• How to access MyProject.MySettings.Default.SomeSetting from xaml?

  - by Shimmy

  I have defined a StringCollection in the Project Settings. I want to use the values in a ComboBox. Is there a way to access it xamly? I tried: <CollectionViewSource Source="{x:Static src:MySettings.Default.MyCollection}" /> <CollectionViewSource x:Key="RoomSections" Source="{x:Static src:MySettings.Default.RoomSections}" /> *src is the xmlns of the project It says: "Type src:MySettings.Default was not found". The thing is that MySettings is a class that offers a Default property which is a thread-safe instance of MySettings, I really want to get the collection from the Default property and not by instantiating a new on. Is there other ways I am not aware of, maybe ObjectDataProvider can access static objects? I thought, maybe I can make in the App.xaml a global resource that return MySettings.Default which is an instance of the MySettings class, and then access all its properties, I will try that out, but I prefer the easy way.

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• Good example usage of get_or _create in Django views and raising a Form error

  - by Rik Wade

  I would like to use get_or_create to check whether an object already exists in my database. If it does not, then it will be created. If it does exist, then I will not create the new object, but need to raise a form error to inform the user that they need to enter different data (for example, a different username). The view contains: p, created = Person.objects.get_or_create( email = registration_form.cleaned_data['email'], defaults = { 'creationDate': datetime.datetime.now(), 'dateOfBirth': datetime.date(1970,1,1) }) So 'p' will contain the existing Person if it exists, or the new Person if not. I would like to act on the boolean value in 'created' in order to skip over saving the Person and re-display the registration_form and raise an appropriate form validation error. The alternative I'm considering is doing a check in a custom Form validation method to see whether a Person exists with the data in the provided 'email' field, and just raising a validation error.

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• Classes / instances in Ontology

  - by SODA

  Hi, I'm trying to comprehend ontology basics. Here's an example: car (class) 2009 VW CC (sub-class or instance?) My neighbor's 2009 VW CC (instance) My issue is understanding what is "2009 VW CC" (as a car model). If you're making product model a sub-class in the ontology - all of a sudden your ontology becomes bloated with thousands of subclasses of a "car". That's redundant. At the same time we can't say "2009 VW CC" is an instance, at least it's not material instance of a class. Does it make sense to distinguish between regular instances and material (distinct physical objects)? At the other hand, if both are instances (of different nature so to say), then how can instance inherit properties / relations of a non-class?

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• java.net.SocketTimeoutException: Read timed out

  - by Rafael Soto

  Hi Folks, I have an application with client server architecture. The client use Java Web Start with Java Swing / AWT and the sert uses HTTP server / Servlet with Tomcat. The communication is made from the serialization of objects, create a ObjectOutput serializes a byte array and send to the server respectively called the ObjectInputStream and deserializes. The application follows communicating correctly to a certain time of concurrency where starting to show error "SocketException read timeout". The erro happens when the server invoke the method ObjectInputStream.getObject() in my servlet doPost method. The tomcat will come slow and the errors start to decrease server response time until the crash time where i must restart the server and after everything works. Someone went through this problem ?

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• django-admin formfield_for_* change default value per/depending on instance

  - by Nick Ma.

  Hi, I'm trying to change the default value of a foreignkey-formfield to set a Value of an other model depending on the logged in user. But I'm racking my brain on it... This: Changing ForeignKey’s defaults in admin site would an option to change the empty_label, but I need the default_value. #Now I tried the following without errors but it didn't had the desired effect: class EmployeeAdmin(admin.ModelAdmin): ... def formfield_for_foreignkey(self, db_field, request=None, **kwargs): formfields= super(EmployeeAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs) if request.user.is_superuser: return formfields if db_field.name == "company": #This is the RELEVANT LINE kwargs["initial"] = request.user.default_company return db_field.formfield(**kwargs) admin.site.register(Employee, EmployeeAdmin) ################################################################## # REMAINING Setups if someone would like to know it but i think # irrelevant concerning the problem ################################################################## from django.contrib.auth.models import User, UserManager class CompanyUser(User): ... objects = UserManager() company = models.ManyToManyField(Company) default_company= models.ForeignKey(Company, related_name='default_company') #I registered the CompanyUser instead of the standard User, # thats all up and working ... class Employee(models.Model): company = models.ForeignKey(Company) ... Hint: kwargs["default"] ... doesn't exist. Thanks in advance, Nick

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• How can I marshall between XLOPER and VARIANT?

  - by Tim

  I'm working on an Excel plugin (XLL), which communicates with COM objects. So, I have to marshall between XLOPER and VARIANT. I've got most of this working, but arrays are definitely a pain. I need to support 1- and 2D arrays. I imagine someone has already had to deal with this before. Is there some library available to simplify this? Are there good tools for dealing with VARIANT, SAFEARRAY, and XLOPER (and XLOPER12)?

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• ExecuteStoreQuery passing parameter to StoreProcedure

  - by KDM

  Could someone help with passing a parameter object into my ExecuteStoreQuery. Im executing this from my Entities db and then creating my procedure on the fly is this possible and is my SQL correct. i need to pass a Id paramater value into my sql statement var node = db.ExecuteStoreQuery<Node>(@" @Id int // not sure about this declaration for paramater with c as ( select Id, Name, ParentId,[0] as level from Department d union all select d.Id, d.Name, d.ParentId, [level] + 1 from Department d join c on d.ParentId = c.Id) select * from c where c.Id = @Id" "Departments", System.Data.Objects.MergeOption.NoTracking, new object{ Id: department.Id} // <--paramater object not working);

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• glTexImage2D behavior on iPhone and other OpenGL ES platforms

  - by spurserh

  Hello, I am doing some work which involves drawing video frames in real time in OpenGL ES. Right now I am using glTexImage2D to transfer the data, in the absence of Pixel Buffer Objects and the like. I suspect that the use of glTexImage2D with one or two frames of look-ahead, that is, using several textures so that the glTexImage2D call can be initiated a frame or two ahead, will allow for sufficient parallelism to play in real time if the system is capable of it at all. Is my assumption true that the driver will handle the actual data transfer to the hardware asynchronously after glTexImage2D returns, assuming I don't try to use the texture or call glFinish/glFlush? Is there a better way to do this with OpenGL ES? Thank you very much, Sean

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• Object/Module not found: RDS from VB6 app to a Win2003 server

  - by Cyberherbalist

  I have a rather legacy application EXE written in VB6 and running on a Windows 2000 server that uses RDS (Remote Data Services) to access a business object DLL (also written in VB6) running on a Windows 2003 server. The DLL has never run on this server (we're moving the component off the old W2K server), but it is registered and defined as a component on the W2k+3 server. The specific code where the DLL is being called is: Private m_rdsDS As RDS.DataSpace Dim oARImport As Object Set oARImport = m_rdsDS.CreateObject("ARBatches.BL_ARBatches", txtWebServer) MsgBox oARImport.AddBatches(m_vConnParms, arbParseString, LinesFromFile) The CreateObject appears to work fine, but calling the method AddBatches raises the error number 8209 "Internet Server Error: Object/module not found." I'm leaning towards the idea that there is a permission issue somewhere at the root of the problem, but if this were the case, why wouldn't it say "You don't have permission"? I'd really like to rewrite the whole app but "they" won't let me.

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• XAML Serialization object not using asp.net shadow copy

  - by mrwayne

  Hi, I'm having a problem where i use the XAML serializer / deserializer for a configuration type file that i have. The problem that i'm getting, is that the XAML serializer is returning objects from the assembly in the /Bin directory, while the rest of the web application is using assembly's stored in the ..../Temporary Files/.. directory. Is there any way to prevent this from happening? Is this a bug in the XAML serializer / assembly loading routines? Every time i compile i need to stop and start the asp.net application so the shadow copy and the bin are exactly the same file. Even when not making a change to the dll and recompiling still causes the problem. Any thoughts on how to get around this problem? Currently i've tried turning shadow copy off, but then i have the same problem of needing to shut down / start up the web app every time i compile. Help!

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• How can I use a custom ValidationAttribute to ensure two properties match?

  - by Brandon Linton

  We're using xVal and the standard DataAnnotationsValidationRunner described here to collect validation errors from our domain objects and view models in ASP.NET MVC. I'd like to have a way to have that validation runner identify when two properties don't match through the use of custom DataAnnotations. Right now I'm forced into doing it outside of the runner, this way: if (!(model.FieldOne == model.FieldTwo)) errors.Add(new ErrorInfo("FieldTwo", "FieldOne must match FieldTwo", model.FieldTwo)); My question is: can this be done using property-level validation attributes, or am I forced into using class-level attributes (in which case, I'd have to modify the runner...and my follow up question would be how best to retrieve them in that case). Thanks!

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• Delayed "rendering" of WPF/Silverlight Dependency Properties?

  - by Aardvark

  Is there a way to know the first time a Dependency Property is accessed through XAML binding so I can actually "render" the value of the property when needed? I have an object (class derived from Control) that has several PointCollection Dependency Properties that may contain 100's or 1000's of points. Each property may arrange the points differently for use in different types shapes (Polyline, Polygon, etc - its more complicated then this, but you get the idea). Via a Template different XAML objects use TemplateBinding to access these properties. Since my object uses a Template I never know what XAML shapes may be in use for my object - so I never know what Properties they may or may not bind to. I'd like to only fill-in these PointCollections when they are actually needed. Normally in .NET I'd but some logic in the Property's getter, but these are bypassed by XAML data binding. I need a WPF AND Silverlight compatible solution. I'd love a solution that avoids any additional complexities for the users of my object.

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• setting a timeout using a manually created forms authentication ticket

  - by Nicklamort

  The constructors for manually creating FormsAuthenticationTicket objects force us to set an "expiration" value, and this value overrides the "timeout" setting in web.config in my tags, which is not what I want, because now the user doesn't timeout. The "session" just expires at the given time. I need to manually create my ticket for UserData reasons, and it is just the way I decided to build my app. I guess I could spend a whole lot of time and redo the way my app. authorizes, and store the "userdata" elsewhere... but this seems extremely tedious for something so small.. Is there anyway to manually create an Auth Ticket and still maintain timeout settings?! And by timeout, I mean resetting the timer on user activity. Not a fixed timeout! Please help!

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• Problem with implementing removeAll for List of custom object

  - by Jay

  Hello everyone, I have a scenario in my code where I need to compare two Lists and remove from the first list, objects which are present in the second list. Akin to how the "removeAll" object works for List. Since my List is created on a custom object, the removeAll method won't work for me. I have tried various methods to make this work: - implemented equals() and hashCode for the custom object comprising the list - implemented the Comparable Interface for the custom object - implemented the Comparator Interface for the custom object I've even tried using the Apache Common's CollectionUtils and ListUtils methods (subtract, intersect, removeAll). None seem to work. I understand I will perhaps need to write some custom removal code. But not sure how to go about doing that. Any pointers helping me move in the right direction will be really appreciated. Thanks, Jay

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• Distributing APNS providers

  - by Sam

  I'm writing a business-focused iPhone app which includes a self-hosted server component. I'd like to include push notification functionality in the server; reading through the programming guide it looks as if this would involve either: Distributing the provider certificate with the server component - this doesn't sound like a terribly good idea (even if Apple permits it?) Hosting a shared notification provider and forwarding notifications to APNS from the servers. For an ongoing, high-availability service, this is likely to require including a subscription pricing component, which I would prefer to avoid. Require customers to apply for their own provider certificate. However, it's not clear whether multiple organisations are allowed to apply for provider certificates with a single bundle ID, and it would significantly increase the barrier to adoption. APNS looks to me as if it's specifically geared for centrally hosted services. Is anyone distributing self-hosted notification providers? Are there any other options?

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• Bullet Physics, when to choose which DynamicsWorld?

  - by Sqeaky

  I have a few general questions about the bullet physics library. Here is my current understanding in a nutshell: btDiscreteDynamicsWorld - Simplest physics world, only handles rigid bodies, maybe it has better performance. btSoftRigidDynamicsWorld - The only physics world that can work with large jello moulds btContinuousDynamicsWorld - If you have really fast objects this will prevent them from prenetrating each other or flying through each other, but is otherwise like a btDiscreteDynamicsWorld. Is my understanding of the btDiscreetDynamicsWorld, btContinuousDynamicsWorld and btSoftRigidDynamicsWorld classes in terms of functionality, purpose, and performance correct? Why does the user manual recommend the btDiscreteDynamicsWorld class? btSoftRigidDynamicsWorld appears to be the only world that can handle soft bodies, so what if we wanted Continuous Physics integration and Soft bodies? How fast is fast enough to consider using a btContinuousDynamicsWorld, and what are the drawbacks of using one? Edit: My Buddy Mako also posted this question on The Bullet forums: http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=4863

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• Load django template from the database

  - by Björn Lindqvist

  Hello, Im trying to render a django template from a database outside of djangos normal request-response structure. But it appears to be non-trivial due to the way django templates are compiled. I want to do something like this: >>> s = Template.objects.get(pk = 123).content >>> some_method_to_render(s, {'a' : 123, 'b' : 456}) >>> ... the rendered output here ... How do you do this?

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• Django and Reportlab Question

  - by Hellnar

  Hello, I have written this small Django view to return pdf. @login_required def code_view(request,myid): try: deal = Deal.objects.get(id=myid) except: raise Http404 header = deal.header code = deal.code response = HttpResponse(mimetype='application/pdf') response['Content-Disposition'] = 'attachment; filename=code.pdf' p = canvas.Canvas(response) p.drawString(10, 800, header) p.drawString(10, 700, code) p.showPage() p.save() return response And my questions: Utf-8 characters are not shown correctly within the pdf. How can I include an image ? How can I include a very basic html such as: . <ul> <li>List One</li> <li>List Two</li> <li>List Three</li> </ul>

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• XStream <-> Alternative binary formats (e.g. protocol buffers)

  - by sehugg

  We currently use XStream for encoding our web service inputs/outputs in XML. However we are considering switching to a binary format with code generator for multiple languages (protobuf, Thrift, Hessian, etc) to make supporting new clients easier and less reliant on hand-coding (also to better support our message formats which include binary data). However most of our objects on the server are POJOs with XStream handling the serialization via reflection and annotations, and most of these libraries assume they will be generating the POJOs themselves. I can think of a few ways to interface an alternative library: Write an XStream marshaler for the target format. Write custom code to marshal the POJOs to/from the classes generated by the alternative library. Subclass the generated classes to implement the POJO logic. May require some rewriting. (Also did I mention we want to use Terracotta?) Use another library that supports both reflection (like XStream) and code generation. However I'm not sure which serialization library would be best suited to the above techniques.

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