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• Rails debugging rails tasks

  - by SMiX

  Hello. How is it possible to debug rake tasks? When I write debugger it does not start: NoMethodError: undefined method `run_init_script' for Debugger:Module from /usr/local/lib/ruby/gems/1.8/gems/ruby-debug-base-0.10.3/lib/ruby-debug-base.rb:239:in `debugger' from (irb):4 If I run rake my:task --debugger rake returns me to console immediately.

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• perl - how to download IMAP mail attachments and save localy

  - by Octopus

  I need suggestions on how can I download attachments from my IMAP mails which having attachments and current date in subject line i.e. YYYYMMDD format and save the attachments at local path. I gone through the perl module 'Mail::IMAPClient' and able to connect to the imap mail server but need help on other tasks. One more thing to note is that my IMAP sever required SSL auth.

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• What’s the strategy to recover data during DAO unit test?

  - by Michael Lu

  When I test DAO module in JUnit, an obvious problem is: how to recover testing data in database? For instance, a record should be deleted in both test methods testA() and testB(), that means precondition of both test methods need an existing record to be deleted. Then my strategy is inserting the record in setUp() method to recover data. What’s your better solution? Or your practical idea in such case? Thanks

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• Sonar integration in hudson, meet "container state was: CONSTRUCTED"

  - by larry cai

  Environment: hudson/sonar/maven2 in ubuntu locally with default parameters And I got the log from hudson below, I can't figure out where is the problem. [INFO] Sonar host: http://localhost:9000 [INFO] Sonar version: 2.0.1 [INFO] [sonar-core:internal {execution: default-internal}] [INFO] Database dialect class org.sonar.api.database.dialect.Derby [INFO] ------------- Analyzing Game of Life business logic module [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Can not execute Sonar Embedded error: Can not analyze the project Cannot stop. Current container state was: CONSTRUCTED [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Can not execute Sonar

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• Why is django giving me an attribute error when I call _set.all() for its children models?

  - by user1876508

  I have two models defined from django.db import models class Blog(models.Model): title = models.CharField(max_length=144) @property def posts(self): self.Post_set.all() class Post(models.Model): title = models.CharField(max_length=144) text = models.TextField() blog = models.ForeignKey('Blog') but the problem is, when I run shell, and enter >>> blog = Blog(title="My blog") >>> post = Post(title="My first post", text="Here is the main text for my blog post", blog=blog) >>> blog.posts I get the error Traceback (most recent call last): File "<console>", line 1, in <module> File "/home/lucas/Programming/Python/Django/djangorestfun/blog/models.py", line 9, in posts self.Post_set.all() AttributeError: 'Blog' object has no attribute 'Post_set' >>> Now I am having the following problem >>> from blog.models import * >>> blog = Blog(title="gewrhter") >>> blog.save() >>> blog.__dict__ {'_state': <django.db.models.base.ModelState object at 0x259be10>, 'id': 1, 'title': 'gewrhter'} >>> blog._state.__dict__ {'adding': False, 'db': 'default'} >>> post = Post(title="sdhxcvb", text="hdbfdgb", blog=blog) >>> post.save() >>> post.__dict__ {'blog_id': 1, 'title': 'sdhxcvb', 'text': 'hdbfdgb', '_blog_cache': <Blog: Blog object>, '_state': <django.db.models.base.ModelState object at 0x259bed0>, 'id': 1} >>> blog.posts >>> print blog.posts None Second update So I followed your guide, but I am still getting nothing. In addition, blog.posts gives me an error. >>> from blog.models import * >>> blog = Blog(title="asdf") >>> blog.save() >>> post = Post(title="asdf", text="sdxcvb", blog=blog) >>> post.save() >>> blog.posts Traceback (most recent call last): File "<console>", line 1, in <module> AttributeError: 'Blog' object has no attribute 'posts' >>> print blog.all_posts None

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• Django : debugging templatetags

  - by interstar

  How on earth do people debug Django templatetags? I created one, based on a working example, my new tag looks the same to me as the existing one. But I just get a 'my_lib' is not a valid tag library: Could not load template library from django.templatetags.my_lib, No module named my_lib I know that this is probably because of something failing when defining the lib. But how do I see what's going on? What do you use to debug this situation?

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• App_Code in Web Client Software Factory, Is it a good idea.

  - by Blithe

  Hi guys, Just want to hear some opinion on adding App_Code in Web Client Software Factory (WCSF) project. The main purpose is to put reusable UI rendering codes which can be use by various pages. For WCSF, I guess only controller can share across pages within a module which does not seems to be a good place for UI stuff. Suggestions? :)

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• South migration error: NoMigrations exception for django.contrib.auth

  - by danpalmer

  I have been using South on my project for a while, but I recently did a huge amount of development and changed development machine and I think something messed up in the process. The project works fine, but I can't apply migrations. Whenever I try to apply a migration I get the following traceback: danpalmer:pest Dan$ python manage.py migrate frontend Traceback (most recent call last): File "manage.py", line 11, in <module> execute_manager(settings) File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 362, in execute_manager utility.execute() File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 303, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 195, in run_from_argv self.execute(*args, **options.__dict__) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 222, in execute output = self.handle(*args, **options) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/management/commands/migrate.py", line 102, in handle delete_ghosts = delete_ghosts, File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/__init__.py", line 182, in migrate_app applied = check_migration_histories(applied, delete_ghosts) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/__init__.py", line 85, in check_migration_histories m = h.get_migration() File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/models.py", line 34, in get_migration return self.get_migrations().migration(self.migration) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/models.py", line 31, in get_migrations return Migrations(self.app_name) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/base.py", line 60, in __call__ self.instances[app_label] = super(MigrationsMetaclass, self).__call__(app_label_to_app_module(app_label), **kwds) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/base.py", line 88, in __init__ self.set_application(application, force_creation, verbose_creation) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/base.py", line 159, in set_application raise exceptions.NoMigrations(application) south.exceptions.NoMigrations: Application '<module 'django.contrib.auth' from '/Library/Python/2.6/site-packages/django/contrib/auth/__init__.pyc'>' has no migrations. I am not that experienced with South and I haven't met this error before. The only helpful mention I can find online about this error is for pre-0.7 I think and I am on South 0.7. I ran 'easy_install -U South' just to make sure. Thanks for any help that you can provide. I really appreciate it.

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• C program debugging in gdb problem

  - by JosiP

  I'm trying to run my app on gdb. Therefore I compiled it with the 'g' option. But when I'm running gdb ./app I get: DW_FORM_strp pointing outside of .debug_str section [in module /home/w/app] And I cannot do any break: (gdb) break main No symbol table is loaded. Use the "file" command. (gdb) .

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• Zend Router Route Regex with Search params

  - by balan-mahadevan

  Hi , Trying to grab the params after ?. I need them to add to the Zend_Paginator. ex: http://www.example.com/test/show?name=xxx&age=20&sex=m Building a paginator for search results. Is there any solution for that ? $router = new Zend_Controller_Router_Route_Regex( 'test/show\?(.*)', array( 'controller' = 'test', 'action' = 'show', 'module' = 'user' ), array( 1 = 'q' ), 'test/show%s' ); $router_prev->addRoute('view',$router);

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• manual install perl-5.10.1-3.tar.bz2 on cygwin

  - by Jason

  Hi, I have the binaries: perl-5.10.1-3.tar.bz2 and I don't have access (admin privileges) to run setup.exe for cygwin, my question is how can I install manually inside cygwin the module for perl: perl-5.10.1-3.tar.bz2 ? (or maybe can I get the sources and compile? can someone tell me please how?) thanks

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• Mocking ImportError in Python

  - by Attila Oláh

  I'm trying this for almost two hours now, without any luck. I have a module that looks like this: try: from zope.cpomonent import queryUtility # and things like this except ImportError: # do some fallback operations <-- how to test this? Later in the code: try: queryUtility(foo) except NameError: # do some fallback actions <-- this one is easy with mocking # zope.component.queryUtility to raise a NameError Any ideas?

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• Servlet receives null from Remote EJB3 Session Bean

  - by Hank

  I'm sure this is a beginner error... So I have a JEE6 application with entities, facades (implementing the persistence layer) and Stateless Session Beans (EJB3) with Remote interfaces (providing access to the entities via facades). This is working fine. Via the SLSB I can retrieve and manipulate entities. Now, I'm trying to do this from a Web Application (deployed on the same Glassfish, entity+interface definitions from JEE app imported as separate jar). I have a Servlet, that receives an instance of the SLSB injected. I get it to retrieve an entity, and the following happens (I can see it in the logs): the remote SLSB gets instantiated, its method called SLSB instantiates the facade, calls the 'get' method facade retrieves object from DB, returns it SLSB returns the object to the caller (all is good until here) calling servlet receives .. null !! What is going wrong? This should work, right? MyServlet: public class MyServlet extends HttpServlet { @EJB private CampaignControllerRemote campaignController; // remote SLSB protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/plain"); PrintWriter out = response.getWriter(); try { Campaign c = campaignController.getCampaign(5L); // id of an existing campaign out.println("Got "+ c.getId()); // c is null !! } finally { out.close(); } } ... } Pls let me know if you want to see other code, and I'll update the post.

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• Prevent checkins to SVN

  - by Joseph Mastey

  My team uses SVN for our software platform, and we create tags periodically to help keep module versions straight. Best practice, as I understand it, is not to modify a tag once it has been created. However, it seems that sometimes the temptation is too great and a modification is made to one of the tags. Is there a way to prevent these kinds of checkins, or at least make them a complete pain so that we can discourage them automatically? Thanks, Joe

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• call parent constructor in ruby

  - by Stas

  Hi! How can I call parents constructor ? module C attr_accessor :c, :cc def initialization c, cc @c, @cc = c, cc end end class B attr_accessor :b, :bb def initialization b, bb @b, @bb = b, bb end end class A < B include C attr_accessor :a, :aa def initialization (a, b, c, aa, bb, cc) #call B::initialization - ? #call C::initialization - ? @a, @aa = a, aa end end Thanks.

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• What are codepad.org's Perl runner limitations?

  - by Lemurik

  Sometimes I see people use http://codepad.org as a way to quickly run/test their Perl snippets (it supports doing that with a wide variety of languages, from C to Scheme to Perl). It's pretty obvious that there must be some limitations as to what code/features can be tested with codepad - does anyone know what those limitations are for Perl runner? I'll get the ball rolling on my own observation: not every CPAN module is available :(

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• Graph layouting with Perl

  - by jonny

  Ok, I have a flowchart definition (basically, array of nodes and edges for each node). Now I want to calculate coordinates for every task in the flow, preferably hierarchycal style. I need something like Graph::Easy::Layout but I have no idea how to get nodes coordinates: I render nodes myself and I only want to retrieve box coordinates/size. Any suggestions? What I need is a cpan module avialable even in Debian repository.

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• refering Tomcat JNDI datasource in persistence.xml

  - by binary_runner

  in server.xml I've defined global resource (I'm using Tomcat 6): <GlobalNamingResources> <Resource name="jdbc/myds" auth="Container" type="javax.sql.DataSource" maxActive="10" maxIdle="3" maxWait="10000" username="sa" password="" driverClassName="org.h2.Driver" url="jdbc:h2:~/.myds/data/db" /> </GlobalNamingResources> I see in catalina.out that this is bound, so I suppose it's OK. In my web app I have the link to the datasource, I'm not sure it's OK: <Context> <ResourceLink global='jdbc/myds' name='jdbc/myds' type="javax.sql.Datasource"/> </Context> and in application there is persistence.xml : <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0"> <persistence-unit name="oam" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <non-jta-data-source>jdbc/myds</non-jta-data-source> <!-- class definitions here, nothing else --> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect"/> </properties> </persistence-unit> </persistence> It shuld be OK, but most probably this or the ResourceLink definition is wrong because I'm getting: javax.naming.NameNotFoundException: Name jdbc is not bound in this Context What's wrong and why this does not work ?

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• Internal and External Bug-Tracking Setup

  - by devdude

  Most of you certainly use some kind of bugtracker. Maybe internally only, once a customer files a bug via email or phone you add a new ticket by yourself. Sometimes weekly project meetings can be great source of new tickets coming preferably in flavors of excel sheets that the PM on the other side of the table loves to maintain and chase after you. The more advanced (and transparent) version: Allow the customer to file (and see the progress of) his bugs directly into you bugtracker. Systems like JIRA allow you to use profiles to have certain access rights, etc. But now the question: The bug raised by a user not necessary translates into 1 bug in a specific module/method/EJB/class. The version of the (your) web application he uses does not translate into the version of the class that is causing the error. How you maintain the internal part of the ticket with all the nasty techy details and the same time the make-the-user-feel-good ticket (need more info, accepted, in progress,..) ? Creating 2 tickets for internal and external ? Link them ? Any smart recipes to share ?

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• How we can lock a table using PHP / Drupal

  - by Kamal Challa

  Hi iam developing a module in Drupal, which needs to have a locking machanism, When one user operating on form submission other should nt take action, How do i can achieve this in php/drupal iam using mysql database with MyISAM/INNODB Please help me Thanks in advance Kamal

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• How to use 3rd party libraries in glassfish?

  - by Hank

  I need to connect to a MongoDB instance from my EJB3 application, running on glassfish 3.0.1. The Mongo project provides a set of drivers, and I'm able to use them in a standalone Java application. How would I use them in a JEE application? Or maybe better phrasing: how would I make a 3rd party library available to my application when it runs in an EJB container? At the moment, I'm getting a java.lang.NoClassDefFoundError when deploying a bean that tries to import from the library: [#|2010-03-24T11:42:15.164+0100|SEVERE|glassfishv3.0|global|_ThreadID=28;_ThreadName=Thread-1;|Class [ com/mongodb/DBObject ] not found. Error while loading [ class mvs.core.LocationCacheService ]|#] [#|2010-03-24T11:42:15.164+0100|WARNING|glassfishv3.0|javax.enterprise.system.tools.deployment.org.glassfish.deployment.common|_ThreadID=28;_ThreadName=Thread-1;|Error in annotation processing: java.lang.NoClassDefFoundError: com/mongodb/DBObject|#] [#|2010-03-24T11:42:15.259+0100|SEVERE|glassfishv3.0|javax.enterprise.system.core.com.sun.enterprise.v3.server|_ThreadID=28;_ThreadName=Thread-1;|Exception while loading the app org.glassfish.deployment.common.DeploymentException: java.lang.NoClassDefFoundError: com/mongodb/DBObject at org.glassfish.weld.WeldDeployer.event(WeldDeployer.java:171) at org.glassfish.kernel.event.EventsImpl.send(EventsImpl.java:125) at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:224) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:338) I tried adding it to the NetBeans project (Properties - Libraries - Compile - Add Jar, enable 'Package'), and I also tried manually copying the jar file to $GF_HOME/glassfish/domains/domain1/lib (where the mysql-connector already resides). Do I need to 'register' the library with the container? Reference it via Annotation? Extend the classpath of the container to include the library?

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• How to link C# and C++ assemblies into a single executable

  - by swingkid

  I have VS2008 solution containg a project that generates a C# executable that references a project that generates a dll containing both C++/CLI and unmanaged C++. I would like to merge these into a single executable, as the C++ dll contains security code that I want to embed in the main executable. I cannot use ILMerge, as the dll contains both managed and unmanaged code. The suggested solution seems to be to use link.exe to link the C# assembly with the C++ object files. This is what I am trying to do. I manually edited the project file for the c# executable to generate a netmodule. I added a post build step to the executable project to run link.exe to link the c# netmodule and the compiled C++ object files together, then run mt.exe to merge the assembly manifests created by both projects. This runs successfully, but the exe still contains a reference to and uses the c++ types defined in the dll generated by the normal build process for the C++ project. I then specified /NOASSEMBLY in the project settings for the C++ dll, so it also generates a netmodule. In the C# project, I removed the reference to the C++ project, but added a project dependancy in the solution. I manually edited the C# project file to include similar to: <ItemGroup> <AddModules Include="..\Debug\librarycode.netmodule" /> </ItemGroup> i.e. to reference the C++ netmodule that is now generated by the C++ project. However, now the linker step in my post build event fails with: error LNK2027: unresolved module reference 'librarycode.netmodule' fatal error LNK1311: 1 unresolved module references: This is entirely understandable, as I am not linking in the librarycode netmodule; I am linking in the C++ object files used to generate the netmodule instead. So in short, how do I merge a c# executable and C++ object files into a single assembly? What have I missed? My source of reference so far (appart from the link.exe command link reference etc on MSDN) are the two following articles: http://blogs.msdn.com/texblog/archive/2007/04/05/linking-native-c-into-c-applications.aspx http://www.hanselman.com/blog/MixingLanguagesInASingleAssemblyInVisualStudioSeamlesslyWithILMergeAndMSBuild.aspx I have a demonstration solution that shows my workings so far, if this helps. Thank you very much in advance.

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• Weblogic 10.3, JDBC, Oracle, SQL - Table or View does not exist

  - by shelfoo

  Hi, I've got a really odd issue that I've not had any success googling for. It started happening with no changes to the DB, connection settings, code etc. Problem is, when accessing a servlet, one of the EJB's is doing a direct SQL call, very simple "select \n" + " value, \n" + " other_value \n" + " from \n" + " some_table \n" + " where some_condition = ? " That's obviously not the direct SQL, but pretty close. For some reason, this started returning an error stating "ORA-00942: table or view does not exist". The table exists, and the kicker is if I hook in a debugger, change a space or something minor (not changing the query itself) in the query, and hot-deploy the change, it works fine. This isn't the first time I've run across this. It only seems to happen in dev environments (haven't seen it in q/a, sandbox, or production yet), is not always replicable, and driving me seriously insane. By not always replicable I mean that occasionally a clean build & redeploy will sometimes fix the problem, but not always. It's not always the same table (although if the error occurs it continues with the same query). Just throwing a feeler out there to see if anybody has run into issues like this before, and what they may have discovered to fix it.

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• Ajax call file or files

  - by WAC0020

  I have a module setup that uses ajax calls, should I have one file for all my ajax calls or should all the calls have their own file? Example of what I mean: index.php ------ With the ajax calls Should I have one file such as 'ajax.php' that has functions for update, delete, and edit. Or should I have update.php, delete.php, and edit.php?

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• gcc precompiled headers weird behaviour with -c option

  - by pachanga

  Folks, I'm using gcc-4.4.1 on Linux and before trying precompiled headers in a really large project I decided to test them on simple program. They "kinda work" but I'm not happy with results and I'm sure there is something wrong about my setup. First of all, I wrote a simple program(main.cpp) to test if they work at all: #include <boost/bind.hpp> #include <boost/function.hpp> #include <boost/type_traits.hpp> int main() { return 0; } Then I created the precompiled headers file pre.h(in the same directory) as follows: #include <boost/bind.hpp> #include <boost/function.hpp> #include <boost/type_traits.hpp> ...and compiled it: $ g++ -I. pre.h (pre.h.gch was created) After that I measured compile time with and without precompiled headers: with pch $ time g++ -I. -include pre.h main.cpp real 0m0.128s user 0m0.088s sys 0m0.048s without pch $ time g++ -I. main.cpp real 0m0.838s user 0m0.784s sys 0m0.056s So far so good! Almost 7 times faster, that's impressive! Now let's try something more realistic. All my sources are built with -c option and for some reason I can't make pch play nicely with it. You can reproduce this with the following steps below... I created the test module foo.cpp as follows: #include <boost/bind.hpp> #include <boost/function.hpp> #include <boost/type_traits.hpp> int whatever() { return 0; } Here are the timings of my attempts to build the module foo.cpp with and without pch: with pch $ time g++ -I. -include pre.h -c foo.cpp real 0m0.357s user 0m0.348s sys 0m0.012s without pch $ time g++ -I. -c foo.cpp real 0m0.330s user 0m0.292s sys 0m0.044s That's quite strange, looks like there is no speed up at all!(I ran timings for several times). It turned out precompiled headers were not used at all in this case, I checked it with -H option(output of "g++ -I. -include pre.h -c foo.cpp -H" didn't list pre.h.gch at all). What am I doing wrong?

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