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  • Linq to sql Error "Data at the root level is invalid " for nullable xml column

    - by Mukesh
    I have Created a table like CREATE TABLE [dbo].[tab1]( [Id] [int] NOT NULL, [Name] [varchar](100) NOT NULL, [Meta] [xml] NULL, CONSTRAINT [PK_tab1] PRIMARY KEY CLUSTERED ( [Id] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] When I am doing linq to sql query to fetch a data it throw an error "data at the root level is invalid linq". In further investigation I come to know that the meta column is null in that case. In real it is nullable Do I have to remove the nullable and set some blank root node as default or there is some another way to get rid of the error. My linq Query which throws error var obj1= (from obj in dbContext.tab1s where obj.id== 123 select obj).FirstOrDefault<Tab1>();

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  • How to -> Visual Studio 2010 Add In Manager

    - by Jeremy Thompson
    Hi, Sorry for such a simple question, but how do I use the Add-In Manager in VS2010? I want to add this "SmartPaster" addin: http://inedo.com/Downloads/SmartPaster.aspx or http://www.mediafire.com/?mzyjamytnlq What do I do with these 3 files to get them listed in the Add-In Manager dialog? SmartPaster2010.AddIn, SmartPaster2010.dll, SmartPaster2010.xml Edit: http://msdn.microsoft.com/en-us/library/19dax6cz.aspx says: "To install the add-in on another computer, the .addin file must be placed in a location where Visual Studio checks for add-ins. These locations are listed in the Options dialog box, in the Environment node, on the Add-in/Macros Security page." I went to Tools Options Environment Add-In/Macro Security, checked some paths put the AddIn files in a couple of these directoryies, restart VS2010 but still no luck!

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  • Debian Package Control file Question.

    - by AJ
    Hello, I need to create a debian package for a java application. In my package there a .jar file which is executable , a script which will run this jar file and a .so file for fmod. I read the tutorial provided at http://tldp.org/HOWTO/html_single/Debian-Binary-Package-Building-HOWTO/ My question is in control file there is a Depends field which basically mentions the packages that need to installed in order to install my application. How do i find which packages are required for my application. I followed the instructions provided in the link for one of the .so and did ~/Desktop/PennTotalRecall/native/fmod/lib/linux64$ dpkg -S libfmodex64-4.28.09.so dpkg: libfmodex64-4.28.09.so not found. It gives above result. Also my application requires java 1.5 to be installed in order for it to run. How do I specify in my debian package. Thanks, AJ

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  • XPCOM support in Android webkit browser?

    - by Krish
    Does the Android WebKit supports the XPCOM framework or NPRuntime API`s as like Firefox? How to implement JavaScript in the Android WebKit plug-in? Update: I am writing a media player plug-in for the Android WebKit browser and my plug-in needs to get the command from the web page through JavaScript (some actions like play/pause/stop/resize are issued as JavaScript commands from the browser). My plug-in is written in native C code. Are there any examples or sample plug-in available for JavaScript communication?

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  • Interaction between Java and Android

    - by Grasper
    I am currently trying to research how to use Android with an existing java based system. Basically, I need to communicate to/from an Android application. The system currently passes object data from computer to computer using ActiveMQ as the JMS provider. On one of the computers is a display which shows object data to the user. What we want to do now is use a phone (running Android) as another option to show this object data to a user with wifi/network access. Ideally we would like to have a native application on the Android that would listen to the ActiveMQ topic and publish to another Topic and read/write/display the object data, but from some research I have done, I am not sure if this is possible. What are some other ways to approach this problem? The android Phone needs to be able to send/receive data. I have been using the AndroidEmulator for testing.

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  • Message pump in .NET Windows service

    - by Pickles
    I have a Windows Service written in C# that handles all of our external hardware I/O for a kiosk application. One of our new devices is a USB device that comes with an API in a native DLL. I have a proper P/Invoke wrapper class created. However, this API must be initialized with an HWnd to a windows application because it uses the message pump to raise asynchronous events. Besides putting in a request to the hardware manufacturer to provide us with an API that does not depend on a Windows message pump, is there any way to manually instantiate a message pump in a new thread in my Windows Service that I can pass into this API? Do I actually have to create a full Application class, or is there a lower level .NET class that encapsulates a message pump?

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  • Confused about Huffman Trees

    - by ShrimpCrackers
    A quick tutorial on generating a huffman tree Confused about Huffman Trees. Near the end of that link above, it shows the tree with 2 elements left, and then the completed tree. I'm confused about the way that it is branched. Is there a specific way a huffman tree needs to be branched? For example, 57:* with its right child 35:* is branched off to the right. Could it have been 35 branched to the left with 22 branched to the right? Also, why wasn't 22:* paired up with 15:4 - it just paired with 20:5 to create a new tree. From initial obersvations it seems the tree does not need to be balanced or have any specific order other than that the frequencies of a leaf add up to the value of the parent node. Could two people creating a huffman tree with the same data end up with different encoding values?

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  • Entity Framework connection metadata extraction

    - by James
    Hi, I am using the EntityFramework POCO adapter and since there are limitations to what microsoft gives access to with regards to the meta data, i am manually extracting the information i need out of the xml. The only problem is i want to get the ssdl, msl, csdl file names to load without having to directly check for the connection string node in app.config. In short where in the ObjectContext/EntityConnection can i get access to these file names? Worst case scenario i need to get the connection name from the EntityConnection object then load this from app.config and parse the string itself and extract the filenames myself. (But i obviously don't want to do that). Thanks

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  • FIPS-compliant encryption in .NET 2.0

    - by Odrade
    We have a .NET 2.0 application that uses the RijindaelManaged class to encrypt some sensitive data. This was fine until we ran into some machines that require the use of FIPS-compliant algorithms. We'd like to switch to AesCryptoServiceProvider, but most of our target machines haven't upgraded past .NET 2.0. Requiring an upgrade is out of the question. After all, upgrades are scary! Is there any way we could use AesCryptoServiceProvider in a .NET 2.0 application? Since 3.5 uses the 2.0 CLR, I was hoping there might be a way to build the needed libraries into the app. Failing that, could someone point me to a reference on the native API that's wrapped by AesCryptoServiceProvider?

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  • Problems with HMAC when switching to Java 6

    - by Pablo Fernandez
    We have recently switched to java6 and it's mandatory in the project. One of our apps that used to work is failing, with this stacktrace (relevant part) java.lang.NoClassDefFoundError: Could not initialize class com.apple.crypto.provider.HmacSHA1 sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) java.lang.reflect.Constructor.newInstance(Constructor.java:513) java.lang.Class.newInstance0(Class.java:355) java.lang.Class.newInstance(Class.java:308) java.security.Provider$Service.newInstance(Provider.java:1221) javax.crypto.Mac.a(DashoA13*..) javax.crypto.Mac.init(DashoA13*..) Has anyone had this problem before? Thanks a lot

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  • Can I get the matched DOM string with PHP and DOMDocument?

    - by alex
    I've got my HTML inside of $html. dom = new DOMDocument(); $dom->loadHTML($html); $xpath = new DOMXPath($dom); $tags = $xpath->query('//div[@id="header"]'); foreach($tags as $tag) { var_dump($tag->nodeValue); // the innerHTML of that element var_dump($tag); // object(DOMElement)#3 (0) { } } Is there a way to get that node, or remove it? Basically, I'm parsing an existing website and need to remove elements from it. What method do I call to do that? Thanks

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  • ASP.Net Response Filter Clashing with SharePoint 2010 Publishing Site Defaults

    - by Jason Weber
    Hello everyone, I'm debugging an HttpModule with an ASP.NET response filter. This dynamically rewrites portions of rendered SharePoint WCM pages. The publishing pages render fine in SP2007 on both Server 2003 and Server 2008. However the equivalent pages fail to render in SP2010 B2 on Server 2008 R2 / IIS7. The following error is returned by ASP.NET: Post cache substitution is not compatible with modules in the IIS integrated pipeline that modify the response buffers. Either a native module in the pipeline has modified an HTTP_DATA_CHUNK structure associated with a managed post cache substitution callback, or a managed filter has modified the response. This error is consistent with KB #2014472. However: Caching is disabled for anonymous & authenticated access at the site collection level There do not appear to be any Substitution controls on either the master or layout page The IIS 7 settings are all stock default This is happening e.g. on /pages/default.aspx. It seems likely I'm missing something cache related...but what?

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  • Using code in both Actionscript3 and Javascript

    - by Ian
    Here's an interesting architectural query. I have a piece of code that needs to run on the server (under Node.js) and on the client (in a Flash 10 app written with Actionscript 3). The code is mostly fairly intricate object manipulation, it doesn't make any API calls, and works fine in both contexts. So far the project is just a demo, so I've been happy to copy and paste the code into both places. But it might be quite interesting to move forward with this. So how would you do it? I assume there is no easy way to get the Flash SDK (has to build without an IDE) to read and do something useful with a .js file. My only thought is that I could write a code-generator that takes the .js file and places it in an ActionScript wrapper. Are there any obvious approaches that I've missed? Just to pre-empt an obvious answer, I know about cross-platform languages like HaXe.

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  • How to prevent Windows XP from stealing my input Ctrl-Space which is meant for Emacs

    - by Dean
    I am learning and using Emacs. What I found annoying is that Ctrl-Space input will be stolen by Windows XP to switch the language bar instead of setting the mark in Emacs. The "language bar" is the native input languages selection such as Chinese keyboard other than English keyboard. Is there a way to temporarily prevent XP from stealing it? I have disabled the language bar from "Regional and language options" from Control Panel but the problem still exists. It doesn't happen on my Windows 2000 desktop at office but it happens on my work Windows XP laptop. Thank you very much.

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  • Interrupt an Http Request blocked in read() on Android

    - by twk
    Using the Apache Http stack on Android, I'm trying to force a thread out of a call to read. This is what the stack looks like: OSNetworkSystem.receiveStreamImpl(FileDescriptor, byte[], int, int, int) line: not available [native method] OSNetworkSystem.receiveStream(FileDescriptor, byte[], int, int, int) line: 478 PlainSocketImpl.read(byte[], int, int) line: 565 SocketInputStream.read(byte[], int, int) line: 87 SocketInputBuffer(AbstractSessionInputBuffer).fillBuffer() line: 103 SocketInputBuffer(AbstractSessionInputBuffer).read(byte[], int, int) line: 134 IdentityInputStream.read(byte[], int, int) line: 86 EofSensorInputStream.read(byte[], int, int) line: 159 Fetcher.readStream() line: 89 I've tried InputStream.close(), Thread.Interrupt(), and HttpUriRequest.abort(), without any success. Any ideas? I'm also open to some kind of non-blocking IO, but I don't see any way to do that with the HttpUriRequest object. Thanks!

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  • DOS batch command to read some info from text file

    - by Ray
    Hello All, I am trying to read some info from a text file by using windows command line, and save it to a variable just like "set info =1234" Below is the content of the txt file, actually I just need the revision number, and the location of it is always the same line 5, and from column 11 to 15. In the sample it's 1234, and I am wondering is there a way to save it to a variable in Dos command line. Thanks a lot! svninfo.txt: Path: . URL: https://www.abc.com Repository Root: https://www.abc.com/svn Repository UUID: 12345678-8b61-fa43-97dc-123456789 Revision: 1234 Node Kind: directory Schedule: normal Last Changed Author: abc Last Changed Rev: 1234 Last Changed Date: 2010-04-01 18:19:54 -0700 (Thu, 01 Apr 2010)

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  • [java] Efficiency of while(true) ServerSocket Listen

    - by Submerged
    I am wondering if a typical while(true) ServerSocket listen loop takes an entire core to wait and accept a client connection (Even when implementing runnable and using Thread .start()) I am implementing a type of distributed computing cluster and each computer needs every core it has for computation. A Master node needs to communicate with these computers (invoking static methods that modify the algorithm's functioning). The reason I need to use sockets is due to the cross platform / cross language capabilities. In some cases, PHP will be invoking these java static methods. I used a java profiler (YourKit) and I can see my running ServerSocket listen thread and it never sleeps and it's always running. Is there a better approach to do what I want? Or, will the performance hit be negligible? Please, feel free to offer any suggestion if you can think of a better way (I've tried RMI, but it isn't supported cross-language. Thanks everyone

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  • Methods for ensuring security between users in multi-user applications

    - by Emilio
    I'm writing a multiuser application (.NET - C#) in which each user's data is separated from the others and there is no data that's common between users. It's critical to ensure that no user has access to another user's data. What are some approaches for implementing security at the database level and/or in the application architecture to to accomplish this? For example (and this is totally made up - I'm not suggesting it's a good or bad approach) including a userID column in all data tables might be an approach. I'm developing the app in C# (asp.net) and SQL Server 2008. I'm looking for options that are are either native in the tools I'm using or general patterns.

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  • Multipart question: Mapping between xml and Json using xpath

    - by scope-creep
    This is a JSON mapping question from a json newbie. Currently i'm reading xml using xpath in C#, and the xpath are returning either the element or attribute node values, as is the schema's want. I want to write out some of the returned values into a json formatted file. I know i can faneigle the xpath expression to return the element or attribute names, so I can built the appropriate name/value json structure before serialization, but I was I'm wondering if their was some way of doing a mapping between the xml and json. The xml schema is fairly big, so potentially the mapping will be big, meaning a ton of cumbersom coding to make it work. Is their any way to automap somehow? I was planning to use json.net, which seems flexible enough, although their may be a better approach. Any help would be appreciated. Bob.

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  • Occasional InterruptedException when quitting a Swing application

    - by Joonas Pulakka
    I recently updated my computer to a more powerful one, with a quad-core hyperthreading processor (i7), thus plenty of real concurrency available. Now I'm occasionally getting the following error when quitting (System.exit(0)) an application (with a Swing GUI) that I'm developing: Exception while removing reference: java.lang.InterruptedException java.lang.InterruptedException at java.lang.Object.wait(Native Method) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134) at sun.java2d.Disposer.run(Disposer.java:125) at java.lang.Thread.run(Thread.java:619) Well, given that it started to happen with a more concurrency-capable hardware, and it has to do with threads, and it happens occasionally, it's obviously some kind of timing thing. But the problem is that the stack trace is so short. All I have is the listing above. It doesn't include my own code at all, so it's somewhat hard to guess where the bug is. Has anyone experienced something like this before? Any ideas how to start solving it?

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  • django admin how to limit selectbox values

    - by SledgehammerPL
    model: class Store(models.Model): name = models.CharField(max_length = 20) class Admin: pass def __unicode__(self): return self.name class Stock(Store): products = models.ManyToManyField(Product) class Admin: pass def __unicode__(self): return self.name class Product(models.Model): name = models.CharField(max_length = 128, unique = True) parent = models.ForeignKey('self', null = True, blank = True, related_name='children') (...) def __unicode__(self): return self.name mptt.register(Product, order_insertion_by = ['name']) admin.py: from bar.drinkstore.models import Store, Stock from django.contrib import admin admin.site.register(Store) admin.site.register(Stock) Now when I look at admin site I can select any product from the list. But I'd like to have a limited choice - only leaves. In mptt class there's function: is_leaf_node() -- returns True if the model instance is a leaf node (it has no children), False otherwise. But I have no idea how to connect it I'm trying to make a subclass: in admin.py: from bar.drinkstore.models import Store, Stock from django.contrib import admin admin.site.register(Store) class StockAdmin(admin.ModelAdmin): def queryset(self, request): qs = super(StockAdmin, self).queryset(request).filter(ihavenoideawhatfilter) admin.site.register(Stock, StockAdmin) but I'm not sure if it's right way, and what filter set.

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  • What are possible reasons for java.io.IOException: "The filename, directory name, or volume label sy

    - by Turismo
    I am trying to copy a file using the following code: File targetFile = new File(targetPath + File.separator + filename); ... targetFile.createNewFile(); fileInputStream = new FileInputStream(fileToCopy); fileOutputStream = new FileOutputStream(targetFile); byte[] buffer = new byte[64*1024]; int i = 0; while((i = fileInputStream.read(buffer)) != -1) { fileOutputStream.write(buffer, 0, i); } For some users the targetFile.createNewFile results in this exception: java.io.IOException: The filename, directory name, or volume label syntax is incorrect at java.io.WinNTFileSystem.createFileExclusively(Native Method) at java.io.File.createNewFile(File.java:850) Filename and directory name seem to be correct. The directory targetPath is even checked for existence before the copy code is executed and the filename looks like this: AB_timestamp.xml The user has write permissions to the targetPath and can copy the file without problems using the OS. As I don't have access to a machine this happens on yet and can't reproduce the problem on my own machine I turn to you for hints on the reason for this exception.

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  • How can i get the absolute position of an SVG element inside the SVG tag using javascript?

    - by Morten
    Hi! I am trying to return the absolute position of an element in a SVG. I have tried using basic javascript functions to return the relative position but I only have access to the contentDocument since the SVG is embeded using an OBJECT tag. Because of this I cannot recurse thru the elements to find the position of the element position... Is there any native SVG functions to get the position of an element relative to the SVG element (X=0, Y=0)? Thank you, Morten!

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  • C++ to bytecode compiler for Silverlight CLR?

    - by paleozogt
    I'd like to be able to compile a C/C++ library so that it runs within a safe managed runtime in the Silverlight CLR. There are several tools for doing this with the JVM that allows C++ code to run within a CRT emulation layer (see NestedVM, LLJVM, etc), which effectively allows C++ code to be run within a Java Applet. There's even a tool for this for the Adobe Flash VM (see Alchemy). However, I can't seem to find any tools like this for the CLR. fyi, the MSVC tools don't seem to allow for this: The /clr:pure flag will create C++ code that runs in the CLR, but it isn't safe (because the CRT isn't safe) and /clr:safe requires massive code changes (no native types, etc).

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  • Distributed datastore

    - by Julien Genestoux
    We're trying to add some kind of persistence in our app. The app generates about 250 entries per second. Each of these entries belong to one of 2M files. For each file, we want to keep the last 10 entries, so we can look them up later. The way our client application works : it gets a stream of all the data it fetches the right file (GET) it adds the new content it saves the file back (PUT) We're looking for an efficient way to store this data that can scale horizontally as the amount of data we're getting is doubling every few weeks. We initially looked at S3. It works fine, but becomes very expensive very fast ($1000 monthly just in PUT operations!) We then gave a shot at Riak. But it seems we can't get more than 60 write/sec on each node, which is very very slow. Any other solution out there?

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