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• Resolving NameErrors -- Getting NameError on RAILS_END in rails_end.rb When using desert plugin and

  - by dr

  What's an effective approach to debug NameErrors in Rails? I'm trying to use the desert plugin (0.5.0) and the edge version of Community_Engine. I've started from scratch and gone through the installation instructions. When I attempt to start my server, I get this error: "Constant RAILS_END from rails_end.rb not found (NameError)". Problem is I cannot find rails_end.rb, nor can I find a google reference to this file or error. I've verified that the required gems are installed and current. I've dug around google and desert, but haven't found any reference to this constant. Any ideas? Thanks Here's my stack trace: => Booting Mongrel => Rails 2.3.2 application starting on http://0.0.0.0:3000 /opt/local/lib/ruby/gems/1.8/gems/desert-0.5.0/lib/desert/rails/ dependencies.rb:15:in `load_missing_constant': Constant RAILS_END from rails_end.rb not found (NameError) from /Users/dmr/.gem/ruby/1.8/gems/activesupport-2.3.2/lib/ active_support/dependencies.rb:80:in `const_missing' from /Users/dmr/.gem/ruby/1.8/gems/activesupport-2.3.2/lib/ active_support/dependencies.rb:92:in `const_missing' from /Users/dmr/dev/lionfold/config/environment.rb:32 from /Users/dmr/.gem/ruby/1.8/gems/rails-2.3.2/lib/ initializer.rb:111:in `run' from /Users/dmr/dev/myapp/config/environment.rb:31 from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/ custom_require.rb:31:in `gem_original_require' from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/ custom_require.rb:31:in `require' from /Users/dmr/.gem/ruby/1.8/gems/activesupport-2.3.2/lib/ active_support/dependencies.rb:156:in `require' from /Users/dmr/.gem/ruby/1.8/gems/activesupport-2.3.2/lib/ active_support/dependencies.rb:521:in `new_constants_in' from /Users/dmr/.gem/ruby/1.8/gems/activesupport-2.3.2/lib/ active_support/dependencies.rb:156:in `require' from /Users/dmr/.gem/ruby/1.8/gems/rails-2.3.2/lib/commands/ server.rb:84 from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/ custom_require.rb:31:in `gem_original_require' from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/ custom_require.rb:31:in `require' from script/server:3

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• "Exception: No extension found at None" when trying on use Selenium Firefox WebDriver on a Mac

  - by Gj

  Any ideas? In [1]: from selenium.firefox.webdriver import WebDriver In [2]: d=WebDriver() --------------------------------------------------------------------------- Exception Traceback (most recent call last) /usr/local/selenium-read-only/<ipython console> in <module>() /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/selenium-2.0_dev-py2.6.egg/selenium/firefox/webdriver.pyc in __init__(self, profile, timeout) 48 profile = FirefoxProfile(name=profile) 49 if not profile: ---> 50 profile = FirefoxProfile() 51 self.browser.launch_browser(profile) 52 RemoteWebDriver.__init__(self, /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/selenium-2.0_dev-py2.6.egg/selenium/firefox/firefox_profile.pyc in __init__(self, name, port, template_profile, extension_path) 72 73 if name == ANONYMOUS_PROFILE_NAME: ---> 74 self._create_anonymous_profile(template_profile) 75 self._refresh_ini() 76 else: /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/selenium-2.0_dev-py2.6.egg/selenium/firefox/firefox_profile.pyc in _create_anonymous_profile(self, template_profile) 82 self._copy_profile_source(template_profile) 83 self._update_user_preference() ---> 84 self.add_extension(extension_zip_path=self.extension_path) 85 self._launch_in_silent() 86 /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/selenium-2.0_dev-py2.6.egg/selenium/firefox/firefox_profile.pyc in add_extension(self, force_create, extension_zip_path) 152 not os.path.exists(extension_source_path)): 153 raise Exception( --> 154 "No extension found at %s" % extension_source_path) 155 156 logging.debug("extension_source_path : %s" % extension_source_path) Exception: No extension found at None

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• Node.js/ v8: How to make my own snapshot to accelerate startup

  - by Anand

  I have a node.js (v0.6.12) application that starts by evaluating a Javascript file, startup.js. It takes a long time to evaluate startup.js, and I'd like to 'bake it in' to a custom build of Node if possible. The v8 source directory distributed with Node, node/deps/v8/src, contains a SconScript that can almost be used to do this. On line 302, we have LIBRARY_FILES = ''' runtime.js v8natives.js array.js string.js uri.js math.js messages.js apinatives.js date.js regexp.js json.js liveedit-debugger.js mirror-debugger.js debug-debugger.js '''.split() Those javascript files are present in the same directory. Something in the build process apparently evaluates them, takes a snapshot of state, and saves it as a byte string in node/out/Release/obj/release/snapshot.cc (on Mac OS). Some customization of the startup snapshot is possible by altering the SconScript. For example, I can change the definition of the builtin Date.toString by altering date.js. I can even add new global variables by adding startup.js to the list of library files, with contents global.test = 1. However, I can't put just any javascript code in startup.js. If it contains Date.toString = 1;, an error results even though the code is valid at the node repl: Build failed: -> task failed (err #2): {task: libv8.a SConstruct -> libv8.a} make: *** [program] Error 1 And it obviously can't make use of code that depends on libraries Node adds to v8. global.underscore = require('underscore'); causes the same error. I'd ideally like a tool, customSnapshot, where customSnapshot startup.js evaluates startup.js with node and then dumps a snapshot to a file, snapshot.cc, which I can put into the node source directory. I can then build node and tell it not to rebuild the snapshot.

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• Problem Linking Boost Filesystem Library in Microsoft Visual C++

  - by Scott

  Hello. I am having trouble getting my project to link to the Boost (version 1.37.0) Filesystem lib file in Microsoft Visual C++ 2008 Express Edition. The Filesystem library is not a header-only library. I have been following the Getting Started on Windows guide posted on the official boost web page. Here are the steps I have taken: I used bjam to build the complete set of lib files using: bjam --build-dir="C:\Program Files\boost\build-boost" --toolset=msvc --build-type=complete I copied the /libs directory (located in C:\Program Files\boost\build-boost\boost\bin.v2) to C:\Program Files\boost\boost_1_37_0\libs. In Visual C++, under Project Properties Additional Library Directories I added these paths: C:\Program Files\boost\boost_1_37_0\libs C:\Program Files\boost\boost_1_37_0\libs\filesystem\build\msvc-9.0express\debug\link-static\threading-multi I added the second one out of desperation. It is the exact directory where libboost_system-vc90-mt-gd-1_37.lib resides. In Configuration Properties C/C++ General Additional Include Directories I added the following path: C:\Program Files\boost\boost_1_37_0 Then, to put the icing on the cake, under Tools Options VC++ Directories Library files, I added the same directories mentioned in step 3. Despite all this, when I build my project I get the following error: fatal error LNK1104: cannot open file 'libboost_system-vc90-mt-gd-1_37.lib' Additionally, here is the code that I am attempting to compile as well as a screen shot of the aformentioned directory where the (assumedly correct) lib file resides: #include "boost/filesystem.hpp" // includes all needed Boost.Filesystem declarations #include <iostream> // for std::cout using boost::filesystem; // for ease of tutorial presentation; // a namespace alias is preferred practice in real code using namespace std; int main() { cout << "Hello, world!" << endl; return 0; } Can anyone help me out? Let me know if you need to know anything else. As always, thanks in advance.

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• How to overload operator<< for qDebug

  - by iyo

  Hi, I'm trying to create more useful debug messages for my class where store data. My code is looking something like this #include <QAbstractTableModel> #include <QDebug> /** * Model for storing data. */ class DataModel : public QAbstractTableModel { // for debugging purposes friend QDebug & operator<< (const QDebug &d, DataModel model); //other stuff }; /** * Overloading operator for debugging purposes */ QDebug & operator<< (QDebug &d, DataModel model) { d << "Hello world!"; return d; } I expect qDebug() << model will print "Hello world!". However, there is alway something like "QAbstractTableModel(0x1c7e520)" on the output. Do you have any idea what's wrong?

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• Sending multi-part email from Google App Engine using Spring's JavaMailSender fails

  - by hleinone

  It works without the multi-part (modified from the example in Spring documentation): final MimeMessagePreparator preparator = new MimeMessagePreparator() { public void prepare(final MimeMessage mimeMessage) throws Exception { final MimeMessageHelper message = new MimeMessageHelper( mimeMessage); message.setTo(toAddress); message.setFrom(fromAddress); message.setSubject(subject); final String htmlText = FreeMarkerTemplateUtils .processTemplateIntoString(configuration .getTemplate(htmlTemplate), model); message.setText(htmlText, true); } }; mailSender.send(preparator); But once I change it to: final MimeMessagePreparator preparator = new MimeMessagePreparator() { public void prepare(final MimeMessage mimeMessage) throws Exception { final MimeMessageHelper message = new MimeMessageHelper( mimeMessage, true); ... message.setText(plainText, htmlText); } }; mailSender.send(preparator); I get: Failed message 1: javax.mail.MessagingException: Converting attachment data failed at com.google.appengine.api.mail.stdimpl.GMTransport.sendMessage(GMTransport.java:231) at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:402) ... This is especially difficult since the GMTransport is proprietary Google class and no sources are available, which would make it a bit easier to debug. Anyone have any ideas what to try next? My bean config, for helping you to help me: <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl" p:username="${mail.username}" p:password="${mail.password}" p:protocol="gm" />

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• How to read LARGE Sqlite file to be copied into Android emulator, or device from assets folder?

  - by Peter SHINe ???

  I guess many people already read this article: Using your own SQLite database in Android applications: http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/comment-page-2/#comment-12368 However it's keep bringing IOException at while ((length = myInput.read(buffer))>0){ myOutput.write(buffer, 0, length); } I’am trying to use a large DB file. It’s as big as 8MB I built it using sqlite3 in Mac OS X, inserted UTF-8 encoded strings (for I am using Korean), added android_meta table with ko_KR as locale, as instructed above. However, When I debug, it keeps showing IOException at length=myInput.read(buffer) I suspect it’s caused by trying to read a big file. If not, I have no clue why. I tested the same code using much smaller text file, and it worked fine. Can anyone help me out on this? I’ve searched many places, but no place gave me the clear answer, or good solution. Good meaning efficient or easy. I will try use BufferedInput(Output)Stream, but if the simpler one cannot work, I don’t think this will work either. Can anyone explain the fundamental limits in file input/output in Android, and the right way around it, possibly? I will really appreciate anyone’s considerate answer. Thank you. WITH MORE DETAIL: private void copyDataBase() throws IOException{ //Open your local db as the input stream InputStream myInput = myContext.getAssets().open(DB_NAME); // Path to the just created empty db String outFileName = DB_PATH + DB_NAME; //Open the empty db as the output stream OutputStream myOutput = new FileOutputStream(outFileName); //transfer bytes from the inputfile to the outputfile byte[] buffer = new byte[1024]; int length; while ((length = myInput.read(buffer))>0){ myOutput.write(buffer, 0, length); } //Close the streams myOutput.flush(); myOutput.close(); myInput.close(); }

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• Android : SQL Lite insertion or create table issue

  - by Ram

  Team, can anyone please help me to understand what could be the problem in the below snippet of code? It fails after insertion 2 and insertion 3 debug statements I have the contentValues in the Array list, I am iterating the arraylist and inserting the content values in to the database. Log.d("database","before insertion 1 "); liteDatabase = this.openOrCreateDatabase("Sales", MODE_PRIVATE, null); Log.d("database","before insertion 2 "); liteDatabase .execSQL("Create table activity ( ActivityId VARCHAR,Created VARCHAR,AMTaps_X VARCHAR,AMTemperature_X VARCHAR,AccountId VARCHAR,AccountLocation VARCHAR,AccountName VARCHAR,Classification VARCHAR,ActivityType VARCHAR,COTaps_X VARCHAR,COTemperature_X VARCHAR,Comment VARCHAR,ContactWorkPhone VARCHAR,CreatedByName VARCHAR,DSCycleNo_X VARCHAR,DSRouteNo_X VARCHAR,DSSequenceNo_X VARCHAR,Description VARCHAR,HETaps_X VARCHAR,HETemperature_X VARCHAR,Pro_Setup VARCHAR,LastUpdated VARCHAR,LastUpdatedBy VARCHAR,Licensee VARCHAR,MUTaps_X VARCHAR,MUTemperature_X VARCHAR,Objective VARCHAR,OwnerFirstName VARCHAR,OwnerLastName VARCHAR,PhoneNumber VARCHAR,Planned VARCHAR,PlannedCleanActualDt_X VARCHAR,PlannedCleanReason_X VARCHAR,PrimaryOwnedBy VARCHAR,Pro_Name VARCHAR,ServiceRepTerritory_X VARCHAR,ServiceRep_X VARCHAR,Status VARCHAR,Type VARCHAR,HEINDSTapAuditDate VARCHAR,HEINEmployeeType VARCHAR)"); Log.d("database","before insertion 3 "); int counter = 0; int size = arrayList.size(); for (counter = 0; counter < size; counter++) { ContentValues contentValues = (ContentValues) arrayList .get(counter); liteDatabase.insert("activity", "activityInfo", contentValues); Log.d("database", "Database insertion is done"); } }

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• Unit testing and mocking email sender in Python with Google AppEngine

  - by CVertex

  I'm a newbie to python and the app engine. I have this code that sends an email based on request params after some auth logic. in my Unit tests (i'm using GAEUnit), how do I confirm an email with specific contents were sent? - i.e. how do I mock the emailer with a fake emailer to verify send was called? class EmailHandler(webapp.RequestHandler): def bad_input(self): self.response.set_status(400) self.response.headers['Content-Type'] = 'text/plain' self.response.out.write("<html><body>bad input </body></html>") def get(self): to_addr = self.request.get("to") subj = self.request.get("subject") msg = self.request.get("body") if not mail.is_email_valid(to_addr): # Return an error message... # self.bad_input() pass # authenticate here message = mail.EmailMessage() message.sender = "[email protected]" message.to = to_addr message.subject = subj message.body = msg message.send() self.response.headers['Content-Type'] = 'text/plain' self.response.out.write("<html><body>success!</body></html>") And the unit tests, import unittest from webtest import TestApp from google.appengine.ext import webapp from email import EmailHandler class SendingEmails(unittest.TestCase): def setUp(self): self.application = webapp.WSGIApplication([('/', EmailHandler)], debug=True) def test_success(self): app = TestApp(self.application) response = app.get('http://localhost:8080/[email protected]&body=blah_blah_blah&subject=mySubject') self.assertEqual('200 OK', response.status) self.assertTrue('success' in response) # somehow, assert email was sent

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• Deadlock in ThreadPoolExecutor

  - by Vitaly

  Encountered a situation when ThreadPoolExecutor is parked in execute(Runnable) function while all the ThreadPool threads are waiting in getTask func, workQueue is empty. Does anybody have any ideas? The ThreadPoolExecutor is created with ArrayBlockingQueue, corePoolSize == maximumPoolSize = 4 [Edit] To be more precise, the thread is blocked in ThreadPoolExecutor.exec(Runnable command) func. It has the task to execute, but doesn't do it. [Edit2] The executor is blocked somewhere inside the working queue (ArrayBlockingQueue). [Edit3] The callstack: thread = front_end(224) at sun.misc.Unsafe.park(Native methord) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:747) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:778) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1114) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262) at java.util.concurrent.ArrayBlockingQueue.offer(ArrayBlockingQueue.java:224) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:653) at net.listenThread.WorkersPool.execute(WorkersPool.java:45) at the same time the workQueue is empty (checked using remote debug) [Edit4] Code working with ThreadPoolExecutor: public WorkersPool(int size) { pool = new ThreadPoolExecutor(size, size, IDLE_WORKER_THREAD_TIMEOUT, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(WORK_QUEUE_CAPACITY), new ThreadFactory() { @NotNull private final AtomicInteger threadsCount = new AtomicInteger(0); @NotNull public Thread newThread(@NotNull Runnable r) { final Thread thread = new Thread(r); thread.setName("net_worker_" + threadsCount.incrementAndGet()); return thread; } }, new RejectedExecutionHandler() { public void rejectedExecution(@Nullable Runnable r, @Nullable ThreadPoolExecutor executor) { Verify.warning("new task " + r + " is discarded"); } }); } public void execute(@NotNull Runnable task) { pool.execute(task); } public void stopWorkers() throws WorkersTerminationFailedException { pool.shutdownNow(); try { pool.awaitTermination(THREAD_TERMINATION_WAIT_TIME, TimeUnit.SECONDS); } catch (InterruptedException e) { throw new WorkersTerminationFailedException("Workers-pool termination failed", e); } } }

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• C++ LNK2019 error with constructors and destructors in derived classes

  - by BLH

  I have two classes, one inherited from the other. When I compile, I get the following errors: 1Entity.obj : error LNK2019: unresolved external symbol "public: __thiscall Utility::Parsables::Base::Base(void)" (??0Base@Parsables@Utility@@QAE@XZ) referenced in function "public: __thiscall Utility::Parsables::Entity::Entity(void)" (??0Entity@Parsables@Utility@@QAE@XZ) 1Entity.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall Utility::Parsables::Base::~Base(void)" (??1Base@Parsables@Utility@@UAE@XZ) referenced in function "public: virtual __thiscall Utility::Parsables::Entity::~Entity(void)" (??1Entity@Parsables@Utility@@UAE@XZ) 1D:\Programming\Projects\Caffeine\Debug\Caffeine.exe : fatal error LNK1120: 2 unresolved externals I really can't figure out what's going on.. can anyone see what I'm doing wrong? I'm using Visual C++ Express 2008. Here are the files.. "include/Utility/Parsables/Base.hpp" #ifndef CAFFEINE_UTILITY_PARSABLES_BASE_HPP #define CAFFEINE_UTILITY_PARSABLES_BASE_HPP namespace Utility { namespace Parsables { class Base { public: Base( void ); virtual ~Base( void ); }; } } #endif //CAFFEINE_UTILITY_PARSABLES_BASE_HPP "src/Utility/Parsables/Base.cpp" #include "Utility/Parsables/Base.hpp" namespace Utility { namespace Parsables { Base::Base( void ) { } Base::~Base( void ) { } } } "include/Utility/Parsables/Entity.hpp" #ifndef CAFFEINE_UTILITY_PARSABLES_ENTITY_HPP #define CAFFEINE_UTILITY_PARSABLES_ENTITY_HPP #include "Utility/Parsables/Base.hpp" namespace Utility { namespace Parsables { class Entity : public Base { public: Entity( void ); virtual ~Entity( void ); }; } } #endif //CAFFEINE_UTILITY_PARSABLES_ENTITY_HPP "src/Utility/Parsables/Entity.cpp" #include "Utility/Parsables/Entity.hpp" namespace Utility { namespace Parsables { Entity::Entity( void ) { } Entity::~Entity( void ) { } } }

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• Can someone help me with this StructureMap error i'm getting?

  - by Pure.Krome

  Hi folks, I'm trying to wire up a simple ASP.NET MVC2 controller class to my own LoggingService. Code compiles fine, but I get the following runtime error :- {"StructureMap Exception Code: 202 No Default Instance defined for PluginFamily System.Type, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"} what the? mscorlib ???? Here's some sample code of my wiring up .. protected void Application_Start() { MvcHandler.DisableMvcResponseHeader = true; BootstrapStructureMap(); ControllerBuilder.Current.SetControllerFactory( new StructureMapControllerFactory()); RegisterRoutes(RouteTable.Routes); } private static void BootstrapStructureMap() { ObjectFactory.Initialize(x => x.For<ILoggingService>().Use<Log4NetLoggingService>()); } and finally the controller, simplified for this question ... public class SearchController : Controller { private readonly ILoggingService _log { get; set; } public SearchController(ILoggingService loggingService) : base(loggingService) { // Error checking removed for brevity. _log = loggingService; _log.Tag = "SearchController"; } ... } and the structuremap factory (main method), also way simplified for this question... protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType) { IController result = null; if (controllerType != null) { try { result = ObjectFactory.GetInstance(controllerType) as Controller; } catch (Exception exception) { if (exception is StructureMapException) { Debug.WriteLine(ObjectFactory.WhatDoIHave()); } } } } hmm. I just don't get it. StructureMap version 2.6.1.0 ASP.NET MVC 2. Any ideas?

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• Deployments and TFS, general questions

  - by Velika

  SOX requires that we have a separate group deploy our ASP.NET web to production. Currently, that group has access to our current code repository in VSS and uses VSS to deploy code that has been checked into VSS. How are deployments typically done for web applications? As a developer, I have used the Deploy function in Visual Studio to deploy code to a network share which corresponds to a IS virtual folder, but I don't think we can expect that the deployment group will be purchasing a copy of Visual Studio just to do deployments. We could check the code into TFS, but what is the minimum software that that group would need to perform the deployment? Would a Team Explorer Client Access suffice? I am aware that Team System has functionality to automate the building of an application. Do people typically deploy to Production by copying aspx and dlls files from the QA environment to production or do you normally deploy from TFS or even VS directly? It seems to me that the preferred approach would be to deploy from the QA environment, since that is the environment that must have been approved for release or that those files should be checked into TFS and the deployed from TFS, assuming you can deploy from TFS. What confuses me is whether bin (binary) files that are local to the project-do they go into TFS? Is so, doesn't this create problems for other developers in that only 1 developers-the one with the binary checked - can actually debug because debugging requires write access to the binaries? Does this mean that the binaries shouldn't be checked into TFS? But eventually, if you deploy from TFS, the binaries HAVE to be added to TFS. Are they added as a separate (compiled) application node? If so,m this sounds real ugly. I would assume not. How does one ensure that the binaries match the source code that we mark with a particular version number? Obviously, I'm clueless. Can someone give me a general idea of how you handle version control and deployments in particular using TFS?

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• Is there a disassembler + debugger for java (ala OllyDbg / SoftICE for assembler)?

  - by Ran Biron

  Is there a utility similar to OllyDbg / SoftICE for java? I.e. execute class (from jar / with class path) and, without source code, show the disassembly of the intermediate code with ability to step through / step over / search for references / edit specific intermediate code in memory / apply edit to file... If not, is it even possible to write something like this (assuming we're willing to live without hotspot for the debug duration)? Edit: I'm not talking about JAD or JD or Cavaj. These are fine decompilers, but I don't want a decompiler for several reasons, most notable is that their output is incorrect (at best, sometimes just plain wrong). I'm not looking for a magical "compiled bytes to java code" - I want to see the actual bytes that are about to be executed. Also, I'd like the ability to change those bytes (just like in an assembly debugger) and, hopefully, write the changed part back to the class file. Edit2: I know javap exists - but it does only one way (and without any sort of analysis). Example (code taken from the vmspec documentation): From java code, we use "javac" to compile this: void setIt(int value) { i = value; } int getIt() { return i; } to a java .class file. Using javap -c I can get this output: Method void setIt(int) 0 aload_0 1 iload_1 2 putfield #4 5 return Method int getIt() 0 aload_0 1 getfield #4 4 ireturn This is OK for the disassembly part (not really good without analysis - "field #4 is Example.i"), but I can't find the two other "tools": A debugger that goes over the instructions themselves (with stack, memory dumps, etc), allowing me to examine the actual code and environment. A way to reverse the process - edit the disassembled code and recreate the .class file (with the edited code).

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• Java mail attachment not working on Tomcat

  - by losintikfos

  Hello guys, I have an application which e-mails confirmations. The email part utilises Commons Mail API. The simple code which does the send mail is as shown below; import org.apache.commons.mail.*; ... // Create the attachment EmailAttachment attachment = new EmailAttachment(); attachment.setURL(new URL("http://cashew.org/doc.pdf")); attachment.setDisposition(EmailAttachment.ATTACHMENT); attachment.setDescription("Testing attach"); attachment.setName("doc.pdf"); // Create the email message MultiPartEmail email = new MultiPartEmail(); email.setHostName("mail.cashew.com"); email.addTo("[email protected]"); email.setFrom("[email protected]"); email.setSubject("Testing); email.setMsg("testing message"); // add the attachment email.attach(attachment); // send the email email.send(); My problem is, when I execute this application from Eclipse, I get email sent with attachment without any issues. But when i deploy the application to Tomcat server (I have tried both version 5 & 6 no joy), the e-mail is sent with below content; ------=_Part_0_25002283.1275298567928 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit testing Regards, los ------=_Part_0_25002283.1275298567928 Content-Type: application/pdf; name="doc.pdf" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="doc.pdf" Content-Description: Testing attach JVBERi0xLjQNJeLjz9MNCjYzIDAgb2JqDTw8L0xpbmVhcml6ZWQgMS9MIDMxMzE4Mi9PIDY1L0Ug Mjg2NjY5L04gMS9UIDMxMTgwMi9IIFsgMjgzNiAzNzZdPj4NZW5kb2JqDSAgICAgICAgICAgICAg DQp4cmVmDQo2MyAxMjcNCjAwMDAwMDAwMTYgMDAwMDAgbg0KMDAwMDAwMzM4MCAwMDAwMCBuDQow MDAwMDAzNTIzIDAwMDAwIG4NCjAwMDAwMDQzMDcgMDAwMDAgbg0KMDAwMDAwNTEwOSAwMDAwMCBu DQowMDAwMDA2Mjc5IDAwMDAwIG4NCjAwMDAwMDY0MTAgMDAwMDAgbg0KMDAwMDAwNjU0NiAwMDAw MCBuDQowMDAwMDA3OTY3IDAwMDAwIG4NCjAwMDAwMDkwMjMgMDAwMDAgbg0KMDAwMDAwOTk0OSAw MDAwMCBuDQowMDAwMDExMDAwIDAwMDAwIG4NCjAwMDAwMTIwNTkgMDAwMDAgbg0KMDAwMDAxMjky MCAwMDAwMCBuDQowMDAwMDEyOTU0IDAwMDAwIG4NCjAwMDAwMTI5ODIgMDAwMDAgbg0KMDAwMDAx ....... CnN0YXJ0eHJlZg0KMTE2DQolJUVPRg0K ------=_Part_0_25002283.1275298567928-- One thing also I have noticed is, the header information donot show TO and Subject values. Hmm pretty wierd. I have to point out that, above is not generated of DEBUG, it is the actual message recieved in my outlook client. Can someone help me please! Do anyone knows what's going on?

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• what's an effective way to build a csproj file in code?

  - by jcollum

  I'd like to avoid a command line for this. I've been using the MSBuild API ( Microsoft.Build.Framework and Microsoft.Build.BuildEngine) with code that looks like this: this.buildEngine = new Engine(); BuildPropertyGroup props = new BuildPropertyGroup(); props.SetProperty("Configuration", "Debug"); this.buildEngine.RegisterLogger(this.logger); Project proj = new Project(this.buildEngine); proj.LoadXml(this.projectFileAndPath, ProjectLoadSettings.None); this.buildEngine.BuildProject(proj, "Build"); However I've run into enough problems that I can't find answers for that I'm really wondering if I'm doing this right. First, I can't find the output (there's no bin directory in any of the places where I figured the dll's would end up). Second, I tried building a project that I had made in VS2008 and the line proj.LoadXml( fails for invalid xml encoding. But of course the xml file is valid, since VS2008 can build it (I checked). At this point I'm beginning to wonder if I've picked up some code that's way out of date or a methodology that's been superseded by something else. Opinions?

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• Munging non-printable characters to dots using string.translate()

  - by Jim Dennis

  So I've done this before and it's a surprising ugly bit of code for such a seemingly simple task. The goal is to translate any non-printable character into a . (dot). For my purposes "printable" does exclude the last few characters from string.printable (new-lines, tabs, and so on). This is for printing things like the old MS-DOS debug "hex dump" format ... or anything similar to that (where additional whitespace will mangle the intended dump layout). I know I can use string.translate() and, to use that, I need a translation table. So I use string.maketrans() for that. Here's the best I could come up with: filter = string.maketrans( string.translate(string.maketrans('',''), string.maketrans('',''),string.printable[:-5]), '.'*len(string.translate(string.maketrans('',''), string.maketrans('',''),string.printable[:-5]))) ... which is an unreadable mess (though it does work). From there you can call use something like: for each_line in sometext: print string.translate(each_line, filter) ... and be happy. (So long as you don't look under the hood). Now it is more readable if I break that horrid expression into separate statements: ascii = string.maketrans('','') # The whole ASCII character set nonprintable = string.translate(ascii, ascii, string.printable[:-5]) # Optional delchars argument filter = string.maketrans(nonprintable, '.' * len(nonprintable)) And it's tempting to do that just for legibility. However, I keep thinking there has to be a more elegant way to express this!

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• FLTK in Cygwin using Eclipse (Linking errors)

  - by qpingu

  I have this assignment due that requires the usage of FLTK. The code is given to us and it should compile straight off of the bat, but I am having linking errors and do not know which other libraries I need to include. I currently have "opengl32", "fltk_gl", "glu32", and "fltk" included (-l), each of which seem to reduce the number of errors. I compiled FLTK using make with no specified options. Including all of the produced library files doesn't fix the problem, and I'm convinced that it's just some Windows specific problem. Compile log: **** Build of configuration Debug for project CG5 **** make all Building target: CG5.exe Invoking: Cygwin C++ Linker g++ -o"CG5.exe" ./src/draw_routines.o ./src/gl_window.o ./src/my_shapes.o ./src/shape.o ./src/shapes_ui.o ./src/tesselation.o -lopengl32 -lfltk_z -lfltk_gl -lglu32 -lfltk /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x197): undefined reference to `_SelectPalette@12' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x1a7): undefined reference to `_RealizePalette@4' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x1fe): undefined reference to `_glDrawBuffer@4' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x20d): undefined reference to `_glReadBuffer@4' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x23a): undefined reference to `_glGetIntegerv@8' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x2c3): undefined reference to `_glOrtho@48' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../libfltk_gl.a(Fl_Gl_Window.o):Fl_Gl_Window.cxx:(.text+0x2f3): undefined reference to `_SwapBuffers@4' ...and lots more Thanks a ton for the help. EDIT: These first few lines are obviously OpenGL related, although I'm still not sure what additional libraries need to be included.

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• Problem installing mod_jk on Ubuntu karmic apache httpd 2.2.12 and tomcat 6

  - by Deny Prasetyo

  I have a problem when configuring mod_jk on ubuntu i use apache httpd 2.2.12 and tomcat 6 I installed apache httpd and lib mod_jk from synaptic and use default configuration. Here my mod_jk.conf Load mod_jk module Update this path to match your modules location LoadModule jk_module /usr/lib/apache2/modules/mod_jk.so Where to find workers.properties Update this path to match your conf directory location JkWorkersFile /etc/apache2/workers.properties Where to put jk logs Update this path to match your logs directory location JkLogFile /etc/apache2/logs/mod_jk.log Set the jk log level [debug/error/info] JkLogLevel info Select the log format JkLogStampFormat "[%a %b %d %H:%M:%S %Y]" JkOptions indicate to send SSL KEY SIZE, JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories JkRequestLogFormat set the request format JkRequestLogFormat "%w %V %T" Send everything for context /ws to worker ajp13 JkMount /themark ajp13 JkMount /themark/* ajp13 Send everything for context /jsp-examples to worker ajp13 JkMount /static ajp13 JkMount /static/* ajp13 Send everything for context /servelts-examples to worker ajp13 JkMount /servlets-examples ajp13 JkMount /servlets-examples/* ajp13 and this my workers.properties Define 1 real worker named ajp13 worker.list=ajp13 Set properties for worker named ajp13 to use ajp13 protocol, and run on port 8009 worker.ajp13.type=ajp13 worker.ajp13.host=localhost worker.ajp13.port=8009 worker.ajp13.lbfactor=50 worker.ajp13.cachesize=10 worker.ajp13.cache_timeout=600 worker.ajp13.socket_keepalive=1 worker.ajp13.socket_timeout=300 when i start apache httpd and tomcat 6. it seem that mod_jk load successfully and tomcat 6 recognized the ajp connector. here my tomcat 6 log INFO: Starting Coyote HTTP/1.1 on http-8080 Mar 29, 2010 11:48:34 AM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Mar 29, 2010 11:48:34 AM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/16 config=null here my mod_jk.log [Mon Mar 29 11:06:53 2010][6688:3499775792] [info] init_jk::mod_jk.c (2830): mod_jk/1.2.26 initialized [Mon Mar 29 11:16:59 2010][18277:1983043376] [info] init_jk::mod_jk.c (2830): mod_jk/1.2.26 initialized [Mon Mar 29 11:16:59 2010][18278:1983043376] [info] init_jk::mod_jk.c (2830): mod_jk/1.2.26 initialized but when i access http://localhost/themark it won't work. it seems that apache httpd can load the mod_jk module but it can listen the ajp. is there somebody ever had same problem? nb: i use the same config in windows using xampplite and it works well

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• Binding UpdateSourceTrigger=Explicit, updates source at program startup

  - by GTD

  I have following code: <Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Grid> <TextBox Text="{Binding Path=Name, Mode=OneWayToSource, UpdateSourceTrigger=Explicit, FallbackValue=default text}" KeyUp="TextBox_KeyUp" x:Name="textBox1"/> </Grid> public partial class Window1 : Window { public Window1() { InitializeComponent(); } private void TextBox_KeyUp(object sender, KeyEventArgs e) { if (e.Key == Key.Enter) { BindingExpression exp = this.textBox1.GetBindingExpression(TextBox.TextProperty); exp.UpdateSource(); } } } public class ViewModel { public string Name { set { Debug.WriteLine("setting name: " + value); } } } public partial class App : Application { protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); Window1 window = new Window1(); window.DataContext = new ViewModel(); window.Show(); } } I want to update source only when "Enter" key is pressed in textbox. This works fine. However binding updates source at program startup. How can I avoid this? Am I missing something?

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• WCF done broke.

  - by SteveCav

  WCF is completely fouled up on my machine. I start a new sln in VS2008. Add a project (WCF Service Lib).Build the project (builds ok). debug the project -- it gets halfway through the progress bar and bombs out with the error below (real path changed to "my mex path" so codeproject doesn't think its spam). I'm assuming it's file permissions but don't know where to start. Any ideas?: Error: Cannot obtain Metadata from my mex path If this is a Windows (R) Communication Foundation service to which you have access, please check that you have enabled metadata publishing at the specified address. For help enabling metadata publishing, please refer to the MSDN documentation at somewhere unhelpful Exchange Error URI: my mex path Metadata contains a reference that cannot be resolved: 'my mex path'. Could not connect to my mex path. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:8731. Unable to connect to the remote server No connection could be made because the target machine actively refused it 127.0.0.1:8731HTTP GET Error URI: my mex path There was an error downloading 'my mex path'. Unable to connect to the remote server No connection could be made because the target machine actively refused it 127.0.0.1:8731

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• Static variables and long running thread on IIS 7.5

  - by Dmitry

  Hello people. Help me solve next problem. I have ASP .NET MVC2 application. I run it on IIS 7.5. In one page user clicks button and handler for this button sends request to server (jquery.ajax). At server action in controller starts new thread (it makes long time import): var thread = new Thread(RefreshCitiesInDatabase); thread.Start(); State of import is available in static variable. New thread changes value of variable in the begin of work. User can check state of import too with the help of this variable, which is used in view. And user sees import's state. When I start this function few minutes everything is okey. On page I see right state of import, quantity of imported records is changed, I see changes in logs. But after few minutes begin troubles. When I refresh page with import state sometimes I see that import is okey but sometimes I see page with default values about import (like application is just started), but after that again I can see page with normal import's state. I tried to attach Visual Studio to IIS process and debug application. But when request comes to controller sometimes static variables have right values and sometimes they have default values (static int has 0, static string has "" etc.). Tell me what I do wrong. May be I must start additional thread in other way? Thanks in advance, Dmitry

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• EOL Special Char not matching

  - by Aurélien Ribon

  Hello, I am trying to find every "a - b, c, d" pattern in an input string. The pattern I am using is the following : "^[ \t]*(\\w+)[ \t]*->[ \t]*(\\w+)((?:,[ \t]*\\w+)*)$" This pattern is a C# pattern, the "\t" refers to a tabulation (its a single escaped litteral, intepreted by the .NET String API), the "\w" refers to the well know regex litteral predefined class, double escaped to be interpreted as a "\w" by the .NET STring API, and then as a "WORD CLASS" by the .NET Regex API. The input is : a -> b b -> c c -> d The function is : private void ParseAndBuildGraph(String input) { MatchCollection mc = Regex.Matches(input, "^[ \t]*(\\w+)[ \t]*->[ \t]*(\\w+)((?:,[ \t]*\\w+)*)$", RegexOptions.Multiline); foreach (Match m in mc) { Debug.WriteLine(m.Value); } } The output is : c -> d Actually, there is a problem with the line ending "$" special char. If I insert a "\r" before "$", it works, but I thought "$" would match any line termination (with the Multiline option), especially a \r\n in a Windows environment. Is it not the case ?

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• Setting up ehcache replication - what multicast settings do I need?

  - by Darren Greaves

  I am trying to set up ehcache replication as documented here: http://ehcache.sourceforge.net/EhcacheUserGuide.html#id.s22.2 This is on a Windows machine but will ultimately run on Solaris in production. The instructions say to set up a provider as follows: <cacheManagerPeerProviderFactory class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory" properties="peerDiscovery=automatic, multicastGroupAddress=230.0.0.1, multicastGroupPort=4446, timeToLive=32"/> And a listener like this: <cacheManagerPeerListenerFactory class="net.sf.ehcache.distribution.RMICacheManagerPeerListenerFactory" properties="hostName=localhost, port=40001, socketTimeoutMillis=2000"/> My questions are: Are the multicast IP address and port arbitrary (I know the address has to live within a specific range but do they have to be specific numbers)? Do they need to be set up in some way by our system administrator (I am on an office network)? I want to test it locally so am running two separate tomcat instances with the above config. What do I need to change in each one? I know both the listeners can't listen on the same port - but what about the provider? Also, are the listener ports arbitrary too? I've tried setting it up as above but in my testing the caches don't appear to be replicated - the value added in one tomcat's cache is not present in the other cache. Is there anything I can do to debug this situation (other than packet sniffing)? Thanks in advance for any help, been tearing my hair out over this one!

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• Creating/Maintaining a large project-agnostic code library

  - by bufferz

  In order to reduce repetition and streamline testing/debugging, I'm trying to find the best way to develop a group of libraries that many projects can utilize. I'd like to keep individual executable relatively small, and have shared libraries for math, database, collections, graphics, etc. that were previously scattered among several projects and in many cases duplicated (bad!). This library is to be in an SVN repo and several programmers will be working on it. This library will be in constant development along with the executables that utilize it. For example, I want a code file in ProjectA to look something like the following: using MyCompany.Math.2D; //static 2D math methods using MyCompany.Math.3D; //static #D math methods using MyCompany.Comms.SQL; //static methods for doing simple SQLDB I/O using MyCompany.Graphics.BitmapOperations; //static methods that play with bitmaps So in my ProjectA solution file in VisualStudio, in order to develop/debug the MyCompany library I have to add several projects (Math, Comms, Graphics). Things get pretty cluttered and Solution files get out of date quickly between programmer SVN commits. I'm just looking for a high level approach to maintaining a large, shared code base in an SCN repository. I am fully willing to radically redesign my approach. I'm looking for that warm fuzzy feeling you get when you're design approach is spot on and development is fluid and natural. And ideas? Thanks!!

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