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• Java,Tomcat,Sessions - JSessionId disappears

  - by Bob

  Hi, I'm having a problem with java sessions. I'm developing a simple web app, where I have to use sessions and session attributes. Everything is fine until I close my browser. When I close my browser the JSessionId disappears. Here's my code: request.getSession().setMaxInactiveInterval(30*60); //it's 30 minutes request.getSession().setAttribute("someinteger", 10); It works great, but when I shut down the browser, and reopen it I can't find the jsessionId (before I closed the browser I could find it in the 'localhost' section). The strange thing is I can still find the "someinteger" cookie. What is the problem? What am I doing wrong? I'm using this, too: link text, and it shows that JSESSIONID cookie expires : "SESSION", and "someinteger" expires in 30 minutes Thanks in advance.

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• Monodevelop: `Waiting for debugger to connect...`

  - by Nicolas Raoul

  I am trying to debug this Mono desktop software in Monodevelop. I imported the SLN file, ran Build all with success, but when I press the Debug button I get this popup that stays waiting forever saying Waiting for debugger to connect...: The output says: User assembly '/home/nico/src/SparkleShare/SparkleShare/bin/SparkleShare.exe' is missing. Debugger will now debug all code, not just user code. Am I doing something wrong? Monodevelop 2.8.6.3 on Ubuntu 2012.04. Nothing special appears on the console with monodevelop -v -v -v. When I press Run instead of Debug, the app crashes immediately saying The application exited with code: 255, but I need Debug to find where the problem is. Note: It is not the same problem as this question, which is about MonoTouch waiting for a phone simulator... the suggestions over there are about the simulator or updating XCode... no simulator nor XCode here.

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• Where did System.Design go?

  - by Nilbert

  I am making a C# project in which I am using ScintillaNet, and it says: The referenced assembly "ScintillaNet" could not be resolved because it has a dependency on "System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project. I tried adding a reference to System.Design, but it doesn't exist in my list. Do I need to download it somewhere? I have MS Visual Studio 10.

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• Any tutorial for Python PalmDB library?

  - by roddik

  Hello, I've downloaded the Python PalmDB lib, but can't find any info on how to use it. I've tried reading docstrings and so far I've been able to come up with the following code: from pprint import pprint from PalmDB.PalmDatabase import PalmDatabase pdb = PalmDatabase() with open('testdb.pdb','rb') as data: pdb.fromByteArray(data.read()) pprint(dir(pdb)) pprint(pdb.attributes) print pdb.__doc__ #print pdb.records print pdb.records[10].toXML() which gives me the xml representation of a record (?) with some nasty long payload attribute, which doesn't resemble any kind of human-readable text to me. I just want to read the contents of the pdb file. Is there a guide/tutorial for this library? What would you do to figure out the proper way to make things done in my situation?

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• In python, what is the fastest way to determine if a string is an email or an integer?

  - by ensnare

  I'd like to be able to pull users from a database using either a supplied e-mail address or the user id (an integer). To do this, I have to detect if the supplied string is an integer, or an e-mail. Looking for the fastest way to do this. Thanks. def __init__(self, data): #populate class data self._fetchInfo(data) def _fetchInfo(self, data): #If an email #SELECT ... WHERE email = 'data' #or if a user_id #SELECT ... WHERE id = 'data' #Fill class attributes self._id = row['id'] self._email = row['id'] ...

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• Disabling Submit Button in ASP.NET 3.5 Application with JavaScript breaks BlackBerry submission

  - by ahsteele

  The following code is being used to disable a Submit button once it has been clicked. This works great on desktop browsers and most BlackBerry mobile browsers. Submit.Attributes.Add("onclick", "javascript:this.disabled=true;" + ClientScript.GetPostBackEventReference(Submit, null)); Unfortunately, when using a BlackBerry Storm clicking the submit button causes the device to just reload the page. If I remove this code the Storm browser submits the page just fine. I need to disable the button when the browser is capable of doing so but do not want to affect browsers that are not JavaScript capable. I realize I could add the jQuery framework and only attach the event client side, but am trying to look for the simplest fix (read least intrusive) as this is a legacy application. Any suggestions?

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• WPF - Drag from withing DataTemplate

  - by Gustavo Cavalcanti

  I have a ListBox displaying employees with a DataTemplate - it looks very similar to this screenshot. I want to be able to click on the employee photo, drag it and drop it somewhere out of the ListBox. How can I do that? I am not sure how to capture the PreviewMouseLeftButtonDown event of the Image, since it's inside the DataTemplate. Edit: The DataTemplate lives in a separate assembly and the drag/drop logic needs to be in the Window that has the ListBox. Edit2: I am thinking that the right way of doing this is using commands, am I right? Thanks!

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• How to complie x64 asp.net website?

  - by Eran Betzalel

  I'm trying to compile (using Visual Studio) an ASP.Net website with the Chilkat library. The compilation fails due to this error: Could not load file or assembly 'ChilkatDotNet2, Version=9.0.8.0, Culture=neutral, PublicKeyToken=eb5fc1fc52ef09bd' or one of its dependencies. An attempt was made to load a program with an incorrect format. I've been told that this error occurs because of platform noncompliance. The weird thing is that although the compilation fails, the site works once accessed from a browser. My theory is that the IIS compilation uses csc.exe compiler from the Framework64 (64 bit) folder while the Visual Studio uses csc.exe compiler from the Framework (32 bit) folder. If this is acually it, how can I configure my Visual studio to run with the 64 bit compiler for ASP.Net sites? This is my current development configuration: Windows 7 (x64). Visual Studio 2008 Pro (x86 of course...). Chilkat library (x64) IIS/Asp.net (x64).

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• 'schema' design for a social network

  - by Alan B

  I'm working on a proof of concept app for a twitter style social network with about 500k users. I'm unsure of how best to design the 'schema' should I embed a user's subscriptions or have a separate 'subscriptions' collection and use db references? If I embed, I still have to perform a query to get all of a user's followers. e.g. Given the following user: { "username" : "alan", "photo": "123.jpg", "subscriptions" : [ {"username" : "john", "status" : "accepted"}, {"username" : "paul", "status" : "pending"} ] } to find all of alan's subscribers, I'd have to run something like this: db.users.find({'subscriptions.username' : 'alan'}); from a performance point of view, is that any worse or better than having a separate subscriptions collection? also, when displaying a list of subscriptions/subscribers, I am currently having problems with n+1 because the subscription document tells me the username of the target user but not other attributes I may need such as the profile photo. Are there any recommended practices for such situations? thanks Alan

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• XPath does not pass brower compatibility checks in InfoPath 2007

  - by drivendevelopment

  Why do the targetField attributes below fail the browser compatibility checker in InfoPath 2007. Is there another way to write the statement so that it will work on Browser Enabled forms? <xsf:ruleSets> <xsf:ruleSet name="ruleSet_1"> <xsf:rule caption="Rule 1" isEnabled="yes"> <xsf:assignmentAction targetField="my:group1/my:group2[1]/my:field3" expression="my:field1"></xsf:assignmentAction> </xsf:rule> <xsf:rule caption="Rule 2" isEnabled="yes"> <xsf:assignmentAction targetField="my:group1/my:group2[2]/my:field3" expression="my:field2"></xsf:assignmentAction> </xsf:rule> </xsf:ruleSet> </xsf:ruleSets>

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• Rails request forgery protection settings

  - by Vitaly

  Hey, please help a newbie in Rails :) I have protect_from_forgery call (which is given by default) with no attributes in my ApplicationController class. Basically here's the code: class ApplicationController < ActionController::Base helper :all # include all helpers, all the time protect_from_forgery helper_method :current_user_session, :current_user filter_parameter_logging :password, :password_confirmation What I assume it should do is: it should prevent any POST requests without correct authenticity_token. But when I send post request with jQuery like the one below, it works fine (there's update statement that is executed in the database)! $.post($(this).attr("href"), { _method: "PUT", data: { test: true } }); I see in console that there's no authenticity_token among sent parameters, but request is still considered valid. Why is that?

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• Determining if a .NET type is dynamic (created using Reflection.Emit)

  - by Diego Mijelshon

  While the .NET 4 framework provides the Assembly.IsDynamic method, that's not the case with .NET 2.0/3.5. The use case is simple: for logging purposes, I want to determine the underlying type name of an entity that might be wrapped by a dynamic proxy without having any references to NHibernate or Castle (which know about the proxy) For example, I might have a CatProxYadaYada, but I'm interested in Cat. What's the easiest way to get that type? I was thinking of this skeleton: var type = obj.GetType(); while (IsProxy_Dynamic_Whatever(obj)) type = type.BaseType; return type;

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• How do I get a list of child elements from XDocument object?

  - by Nick

  Hello.. I am trying to get all of the "video" elements and their attributes from an XML file that looks like this: <?xml version="1.0" encoding="utf-8" ?> <videos> <video title="video1" path="videos\video1.wma"/> <video title="video2" path="videos\video2.wma"/> <video title="video3" path="videos\video3.wma"/> </videos> The following will only select the root node and all of the children. I would like to get all of the 'video' elements into the IEnumerable. Can someone tell me what I'm doing wrong? IEnumerable<XElement> elements = from xml in _xdoc.Descendants("videos") select xml; The above returns a collection with a length == 1. It contains the root element and all the children.

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• How to bind a List of a DataObject to a Grid with BindingSources?

  - by citronas

  In an assembly I created a class like the following: [DataObject(true)] public class A { public int Foo{get;set;} [DataObjectMethod[DataObjectMethodType.Select)] public static List<A> GetAllA(string ConnectionString) { // return filled List<A> } } Now I want to display this List with a Gridcontrol under Winforms. I though of a DataGrid. Though I'm coming from ASP.net I'd first think of this.dataGridView1.DataSource = A.GetAllA(ConnectionString) Works, but I'd prefer a better databinding with BindingSources. (Because I've always heard that thats the way to go) I managed to drop a BindingSource onto the form and set the DataSource property to class A. But where can I set the SelectMethod and its parameters? If I set DataSource property of the dataGridView to the BindingSource, it will only display an empty line. Is this the right way to go? Will it only require some additional clicks in the wizard, or do I need to read tons of documentation to get this working?

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• Why is FxCop warning about an overflow (CA2233) in this C# code?

  - by matt

  I have the following function to get an int from a high-byte and a low-byte: public static int FromBytes(byte high, byte low) { return high * (byte.MaxValue + 1) + low; } When I analyze the assembly with FxCop, I get the following critical warning: CA2233: OperationsShouldNotOverflow Arithmetic operations should not be done without first validating the operands to prevent overflow. I can't see how this could possibly overflow, so I am just assuming FxCop is being overzealous. Am I missing something? And what steps could be taken to correct what I have (or at least make the FxCop warning go away!)?

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• Trying to compile VS2008 project on Win 64 bit which is custom Powershell PSSnapin

  - by Boris Kleynbok

  Library Project compiles fine for ANY CPU in VS2008 running on Win 7 64 -bit. Now in the post build following command fails when attemptiong to register library dll: PS C:\Windows\Microsoft.NET\Framework64\v2.0.50727 .\installutil C:\path\Project.dll Exception occurred while initializing the installation: System.BadImageFormatException: Could not load file or assembly 'file:///C:\path\Project.dll' or one of its dependencies. An attempt was made to load a program with an incorrect format.. Do I need to compile the project as x64 I was under impression that AnyCPU will take care of it. Alo my library does have dependencies. Do they also need to be compiled as x64 bit? Any help is appreciated.

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• Why doesn't .NET find the OpenSSL.NET dll?

  - by Lazlo

  EDIT (the whole question, it was too unclear) I want to use OpenSSL.NET The OpenSSL.NET install instructions page: INSTALL Make sure you have libeay32.dll and ssleay32.dll in the current working directory of your application or in your PATH. DONE In your .NET project, add a reference to the ManagedOpenSsl.dll assembly. DONE I have put libeay32.dll and ssleay32.dll in both my bin/Debug and bin/Release directories. I have also put them in system32. Here is my FULL code: using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { try { OpenSSL.Crypto.RSA rsa = new OpenSSL.Crypto.RSA(); } catch (Exception e) { Console.WriteLine(e.InnerException.Message); } Console.Read(); } } } I get the following error: (Unable to load DLL 'libeay32') Here is the Process Monitor log (upon request): What am I doing wrong? Why isn't the DLL found?

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• Display action-specific authorisation message for [Authorize] attribute

  - by FreshCode

  Is there a way to display an action-specific authorisation message for when an [Authorize] or [Authorize(Roles="Administrator")] attribute redirects the user to the sign-in page? Ideally, [Authorize(Roles="Administrator", Message="I'm sorry Dave. I'm afraid I can't let you do that.")] public ActionResult SomeAdminFunction() { // do admin stuff return View(); } As I understand it, attributes are not meant to add functionality, but this seems purely informational. One could do this inside the action, but it seems inelegant compared to the use of an attribute. Alternatively, if (!Request.IsAuthenticated) { if (!User.IsInRole("Administrator")) SetMessage("You need to be an administrator to destroy worlds."); // write message to session stack return RedirectToAction("SignIn", "Account"); } Is there an existing way to do this or do I need to override the [Authorize] attribute?

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• Good tools which generate NUnit unit tests for .NET assemblies in Visual Studio 2008

  - by andy

  Hey guys, I'm pretty new to Unit Testing so bare with me. I realize that best best practice is not to auto generate unit tests, however I'd like to use Code Generation to set-up the basic skeleton of the tests. Now, I know Visual Studio 2008 already has the built in "create tests", however, it just creates a flat list of all the classes it's going to test... and it's not for NUnit right? Ideally, I'd like the code generation to follow the folder AND namespace structure of the assembly its generating tests for. Can you guys recommend any good tools which generate NUnit unit tests for .NET assemblies in Visual Studio 2008? cheers!

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• custom converter in XStream

  - by Raja Chandra Rangineni

  Hi All, I am using XStream to serialize my Objects to XML format. The formatted xml that I get is as below: node1, node2, node 3 are attributes of pojo,DetailDollars DetailDollars node1 100 /node1 node2 25 /node2 node3 10 /node3 /DetailDollars I have requirement where in I have to calucluate a percentage, for example 100/ 25 and add the new node to the existing ones. So, the final output should be : DetailDollars node1 100 /node1 node2 25 /node2 node3 10 /node3 node4 4 /node4 DetailDollars I wrote a custom converter and registered to my xstream object. public void marshal(..){ writer.startNode("node4"); writer.setValue(getNode1()/ getnode2() ); writer.endNode(); } But, the xml stream I get has only the new node: DetailDollars node4 4 /node4 /DetailDollars I am not sure which xstream api would get me the desired format. could you please help me with this . Thanks, Raja chandra Rangineni.

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• Atomikos with Hibernate will exhaust db connections

  - by peter

  I am testing an application (Spring 2.5, Hibernate 3.5.0 Beta, Atomikos 3.6.2, and Postgreql 8.4.2) with the configuration for the DAO listed below. The problem that I see is that the pool of 10 connections with the dataSource gets exhausted after the 10's transaction. I know 'hibernate.connection.release_mode' has no effect unless the session is obtained with openSession rather then using a contextual session. I am wandering if anyone has found a way to instruct atomikos code to release connections after any transaction. Thank you Peter <bean id="dataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close"> <property name="uniqueResourceName"><value>XADBMS</value></property> <property name="xaDataSourceClassName"> <value>org.postgresql.xa.PGXADataSource</value> </property> <property name="xaProperties"> <props> <prop key="databaseName">${jdbc.name}</prop> <prop key="serverName">${jdbc.server}</prop> <prop key="portNumber">${jdbc.port}</prop> <prop key="user">${jdbc.username}</prop> <prop key="password">${jdbc.password}</prop> </props> </property> <property name="poolSize"><value>10</value></property> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource"> <ref bean="dataSource" /> </property> <property name="mappingResources"> <list> <value>Abc.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop> <prop key="hibernate.show_sql">on</prop> <prop key="hibernate.format_sql">true</prop> <prop key="hibernate.connection.isolation">3</prop> <prop key="hibernate.current_session_context_class">jta</prop> <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</prop> <prop key="hibernate.transaction.manager_lookup_class">com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup</prop> <prop key="hibernate.connection.release_mode">auto</prop> <prop key="hibernate.current_session_context_class">org.hibernate.context.JTASessionContext</prop> <prop key="hibernate.transaction.auto_close_session">true</prop> </props> </property> </bean> <!-- Transaction definition here --> <bean id="userTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp" init-method="init" destroy-method="shutdownForce"> <constructor-arg> <props> <prop key="com.atomikos.icatch.service"> com.atomikos.icatch.standalone.UserTransactionServiceFactory </prop> </props> </constructor-arg> </bean> <!-- Construct Atomikos UserTransactionManager, needed to configure Spring --> <bean id="AtomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close" depends-on="userTransactionService"> <property name="forceShutdown" value="false" /> </bean> <!-- Also use Atomikos UserTransactionImp, needed to configure Spring --> <bean id="AtomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp" depends-on="userTransactionService"> <property name="transactionTimeout" value="300" /> </bean> <!-- Configure the Spring framework to use JTA transactions from Atomikos --> <bean id="txManager" class="org.springframework.transaction.jta.JtaTransactionManager" depends-on="userTransactionService"> <property name="transactionManager" ref="AtomikosTransactionManager" /> <property name="userTransaction" ref="AtomikosUserTransaction" /> </bean> <!-- the transactional advice (what 'happens'; see the <aop:advisor/> bean below) --> <tx:advice id="txAdvice" transaction-manager="txManager"> <tx:attributes> <!-- all methods starting with 'get' are read-only --> <tx:method name="get*" read-only="true" propagation="REQUIRED"/> <!-- other methods use the default transaction settings (see below) --> <tx:method name="*" propagation="REQUIRED"/> </tx:attributes> </tx:advice> <aop:config> <aop:advisor pointcut="execution(* *.*.AbcDao.*(..))" advice-ref="txAdvice"/> </aop:config> <!-- DAO objects --> <bean id="abcDao" class="test.dao.impl.HibernateAbcDao" scope="singleton"> <property name="sessionFactory" ref="sessionFactory"/> </bean>

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• Customizing an item's view in SharePoint Designer

  - by agnieszka

  I've created a list called Newsletters (columns: Title, Date and News - a multi lookup to a News list), and a DataFormWebPart displaying an item from this list. Now I'm modifing the XSLT transformation to change the displayed view. At the moment an item is simply displayed with its Title, Date and News attributes, where News attribute is displayed as a list of News items titles - this is the default. Instead of the titles, I would like to also display these news' Content. The problem is that I have no idea how to get to these elements. The News attribute is being referred in xslt simply as <xsl:value-of select="@News"/> and I can't get to the elements that lie behind it. Any suggestions on how I can do it?

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• How to control allowed HTML tags in WMD Editor?

  - by Toto

  I am trying to some-how set the valid HTML tags and attributes users would be able to use in WMD Editor in my site. For example, I want to forbid the user to directly set the font size, color, typeface and so on, which is trivial to do with the default settings typing something like: <span style="font-size: 45px; color:#FF0000">Some intrusive text here</span>. I think the way to implement this is through the "wmd_options", but I have not found any documentation or reference regarding this, giving the fact that the 'Options demo' seems to be the only public documentation and it does not show how should I do what I have described above. I've send this same question to [email protected] but didn't get any reply. As stackoverflow uses this editor someone reading this or maybe Jeff knows the answer ;) Thanks in advance!

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• How can I test to see if a class contains a particular attribute?

  - by BryanWheelock

  How can I test to see if a class contains a particular attribute? In [14]: user = User.objects.get(pk=2) In [18]: user.__dict__ Out[18]: {'date_joined': datetime.datetime(2010, 3, 17, 15, 20, 45), 'email': u'[email protected]', 'first_name': u'', 'id': 2L, 'is_active': 1, 'is_staff': 0, 'is_superuser': 0, 'last_login': datetime.datetime(2010, 3, 17, 16, 15, 35), 'last_name': u'', 'password': u'sha1$44a2055f5', 'username': u'DickCheney'} In [25]: hasattr(user, 'username') Out[25]: True In [26]: hasattr(User, 'username') Out[26]: False I'm having a weird bug where more attributes are showing up than I actually define. I want to conditionally stop this. e.g. if not hasattr(User, 'karma'): User.add_to_class('karma', models.PositiveIntegerField(default=1))

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• Convert XMLDocument to String

  - by mnh

  Here is how I'm currently converting XMLDocument to String StringWriter stringWriter = new StringWriter(); XmlTextWriter xmlTextWriter = new XmlTextWriter(stringWriter); xmlDoc.WriteTo(xmlTextWriter); return stringWriter.ToString(); The problem with this method is that if I have " ((quotes) which I have in attributes) it escapes them. For Instance: <Campaign name="ABC"> </Campaign> Above is the expected XML. But it returns <Campaign name=\"ABC\"> </Campaign> I can do String.Replace "\" but is that method okay? Are there any side-effects? Will it work fine if the XML itself contains a "\"

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