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• JMS Acknowledge Asynchronous Message

  - by x1a0

  Hi, How do I acknowledge a message when I am using a message listener? I get the following error when I try to do an acknowledge in my message listener. A synchronous method call is not permitted when a session is being used asynchronously: 'acknowledge'

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• passing LIMIT as parameters to MySQL sproc

  - by Kyle

  I'm creating a paging class and need to pass in two parameters to my MySQL stored procedure for the LIMIT clause. I'm passing them in as INTs and trying something like this SELECT * FROM `MyTable` LIMIT MyFirstParamInt, MySecondParamInt it gives me an error when I try and save the sproc though. Is there a way to do this that I'm just missing? Or am I going to have to EVAL the whole query and EXECUTE it?

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• C++ print value of a pointer

  - by user69514

  I have an array of double pointers, but every time I try do print one of the values the address gets printed. How do I print the actual value? cout << arr[i] ? cout << &arr[i] ? they both print the address Does anyone know?

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• Sqlite3 and PDO problem with ORDER BY

  - by Maenny

  Hi, I try to use the SQL statement SELECT * FROM table ORDER BY column via an PDO-Object in PHP. Problem is, that I always get an error (Call to a member function fetchall() on a non-object - that means, the query did not return a PDO-object) when using the names of all columnname EXCEPT for ID. When I query SELECT * FROM table ORDER BY ID it works. ID is the PRIMARY INTEGER KEY, all other columns are TEXT or NUMERIC, neither of them would works with the ORDER BY clause. Any ideas?

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• Singleton & Multithreading in Java

  - by vivek jagtap

  What is the preferred way to work with Singleton class in multithreaded environment? Suppose if I have 3 thread, and all they try to access getInstance() method of singleton class at the same time - What would happen if no synchronization is maintained? Is it good practice to use synchronized getInstance() method or use synchronized block inside getInstance(). Please advise if there is any other way out.

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• How is the default constructor of System.Drawing.Graphics removed?

  - by Albert Iordache

  When I try to create an object of Graphics, why doesn't the following work? System.Drawing.Graphics graphicsObj = new System.Drawing.Graphics(); (I am aware that I could create a private System.Windows.Forms.Panel Obj; and then do CreateGraphics() if I wanted it to work) I tried to find a custom constructor for Graphics, but I couldn't find one. Where did Microsoft define it, or how did it block it?

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• Make instance of class in java at runtime

  - by Milan

  In my program I generate classes dynamically but when I try: Class service = Class.forName("com.MyClass"); I recieve java.lang.ClassNotFoundException If I run one more time the program (in Eclipse), then it is working. Does anybody see the problem

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• File Operations in Android NDK

  - by EnderX

  I am using the Android NDK to make an application primarily in C for performance reasons, but it appears that file operations such as fopen do not work correctly in Android. Whenever I try to use these functions, the application crashes. How do I create/write to a file with the Android NDK?

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• how can i pass 2 arrays as datas in googlechart

  - by gin

  I'm using google charts easy php class (here's the link of it) and i want to draw Multiple Vertical Bar Chart, as the documentation says "Separate multiple data sets with |" so i try this , but nothing happens $chart1=new googleChart($a | $b ,'bary' ); *note that both $a & $b are arrays i would appreciate any help :)

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• How I can Optimize this mySQL transaction within java code?

  - by worldpython

  Dear All, I am new to MySql database. I've large table(ID,...). I select ID frequently with java code and.And that make a heavy load on transaction select from tableName where ID=someID notes: 1.Database could be 100,000 records 2.I can't cache result 3.ID is a primary key 4.I try to optimize time needed to return result from query. Any ideas for optimization ? thanks in advance

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• Opera 10 supports html5 audio tag but Opera 11?

  - by tengyong

  I have been working on a HTML5 project and I recently noticed Opera 10.60 supports audio tag perfectly but not latest version of Opera (version 11.00 build 1156). you may try with URL: http://moztw.org/demo/audioplayer/ with Opera 11.00. I can see the audio player without problem but it just doesn't play the music. My HTML code is as simple as :- <audio controls src="media/vincent.ogg" type="audio/ogg"></audio>

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• What are your favorite Vim tricks?

  - by Joe Van Dyk

  Post your favorite Vim tricks (or plug-ins or scripts). One trick per answer. Try to come up with something other than the basics, btw. :D

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• uncheck all checkboxes except the one with a class?

  - by Dejan.S

  hi i try to check/uncheck all checkboxes that don't got a class to them. This is the code I got but it check the class boxes to. $(document).ready(function() { $('#ctl00_ContentPlaceHolder1_repReceivers_ctl00_chxAll').click( function() { if (!$("input[type='checkbox']").hasClass("testclass")) { $("input[type='checkbox']").attr('checked', $('#ctl00_ContentPlaceHolder1_repReceivers_ctl00_chxAll').is(':checked')); }}); }); any ideas where I go wrong?

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• Where to announce a project aimed exclusively at developers?

  - by doublep

  Where do I announce a free software project that is aimed exclusively at developers? If it was an end-user application, I could try freshmeant.net, for instance. But how to make a developer-only low-level library "known to the world"? [not sure this is not off-topic here...]

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• How to pass parameters for OPENDATASOURCE

  - by Rapunzo

  I can connect to a linked server with this: SELECT testNo, soruTuruId, soruNo, cevap , degerlendirenTcNo, degerlendirilenTcNo FROM OPENDATASOURCE('SQLOLEDB', 'Data Source=192.168.150.42;User ID=readerUser;Password=1').akreditasyon.dbo.tblPerfCevap But I have to pass the password as parameter. and I try like this: SET @connectionString = 'Data Source=192.168.150.42;User ID=readerUser;Password='+@pw SELECT testNo, soruTuruId, soruNo, cevap , degerlendirenTcNo, degerlendirilenTcNo FROM OPENDATASOURCE('SQLOLEDB', @connectionString ).akreditasyon.dbo.tblPerfCevap and SELECT testNo, soruTuruId, soruNo, cevap , degerlendirenTcNo, degerlendirilenTcNo FROM OPENDATASOURCE('SQLOLEDB', 'Data Source=192.168.150.42;User ID=readerUser;Password='+@pw ).akreditasyon.dbo.tblPerfCevap but didnt work:S does anyone have an idea?

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• .Net Linq - Join together all item of a List

  - by Melursus

  How can I write a Linq expression that select item from a List and join them together ? Example IList<string> data = new List<string>(); data.Add("MyData1"); data.Add("MyData2"); string result = //some linq query... I try data.Select(x => x + ","); //result = "MyData1, MyData2"

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• Store request.headers in a serialized model attribute

  - by Horace Loeb

  Here's my model: class Comment < ActiveRecord::Base serialize :request_headers end But when I try to do @comment.request_headers = request.headers I get a TypeError (can't dump anonymous class Class) exception. Another way to ask my question: how can I convert request.headers into a Hash? It uses a Hash under the covers so this should be easy, no?

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• Library to edit odt documents in php

  - by neo

  I try to edit ODT-documents programmaticly in PHP. In fact I just want to do some text replacement and adding new rows in a table. I know that a normal ODF document is an archive containing XML-files. But before I reinvent the wheel: is there any library which does most of the tasks? Or should I just parse the XML-file in a DOM-parser and modify it?

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• DataSet size best practices - are there any general rules?

  - by Galwegian

  I'm working on a desktop application that will produce several in-memory datasets as an intermediary before being committed to a database. Obviously I'm going to try to keep the size of these to a minimum, but are there any guidelines on thresholds I shouldn't cross for good functionality on an 'average' machine? Thanks for any help.

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• Using Boost on ubuntu

  - by Dexter

  I've heard a lot of good comments about Boost in the past and thought I would give it a try. So I downloaded all the required packages from the package manager in Ubuntu 9.04. Now I'm having trouble finding out how to actually use the darn libraries. Does anyone know of a good tutorial on Boost that goes all the way from Hello World to Advanced Topics, and also covers how to compile programs using g++ on ubuntu?

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• Why is this line breaking Rails with Passenger on DreamHost?

  - by Frew

  Ok, so I have a Rails app set up on DreamHost and I had it working a while ago and now it's broken. I don't know a lot about deployment environments or anything like that so please forgive my ignorance. Anyway, it looks like the app is crashing at this line in config/environment.rb: require File.join(File.dirname(__FILE__), 'boot') config/boot.rb is pretty much normal, but I'll include it here anyway. # Don't change this file! # Configure your app in config/environment.rb and config/environments/*.rb RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT) module Rails class << self def boot! unless booted? preinitialize pick_boot.run end end def booted? defined? Rails::Initializer end def pick_boot (vendor_rails? ? VendorBoot : GemBoot).new end def vendor_rails? File.exist?("#{RAILS_ROOT}/vendor/rails") end def preinitialize load(preinitializer_path) if File.exist?(preinitializer_path) end def preinitializer_path "#{RAILS_ROOT}/config/preinitializer.rb" end end class Boot def run load_initializer Rails::Initializer.run(:set_load_path) end end class VendorBoot < Boot def load_initializer require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer" Rails::Initializer.run(:install_gem_spec_stubs) end end class GemBoot < Boot def load_initializer self.class.load_rubygems load_rails_gem require 'initializer' end def load_rails_gem if version = self.class.gem_version gem 'rails', version else gem 'rails' end rescue Gem::LoadError => load_error $stderr.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.) exit 1 end class << self def rubygems_version Gem::RubyGemsVersion if defined? Gem::RubyGemsVersion end def gem_version if defined? RAILS_GEM_VERSION RAILS_GEM_VERSION elsif ENV.include?('RAILS_GEM_VERSION') ENV['RAILS_GEM_VERSION'] else parse_gem_version(read_environment_rb) end end def load_rubygems require 'rubygems' min_version = '1.1.1' unless rubygems_version >= min_version $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.) exit 1 end rescue LoadError $stderr.puts %Q(Rails requires RubyGems >= #{min_version}. Please install RubyGems and try again: http://rubygems.rubyforge.org) exit 1 end def parse_gem_version(text) $1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/ end private def read_environment_rb File.read("#{RAILS_ROOT}/config/environment.rb") end end end end # All that for this: Rails.boot! Does anyone have any ideas? I am not getting any errors in the log or on the page. -fREW

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• Trying to write junit test missing some basisc

  - by Gandalf StormCrow

  When I try to use assertNotLesser or assertNotGreater I get compile error .. and eclipse suggest me to create a new method called like this .. http://junit-addons.sourceforge.net/junitx/framework/ComparableAssert.html I found it here I never used these options before but I need to write this test, I can do it jmock as well but I don't know how .. I need to compare my expected results let say 0, if the real result is greater that the test should fail.

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• Update Statement Updates 0 Rows via the C# Winform Application?

  - by peace

  First of all, please help me out! I can not take this anymore. I could not find where the error is located. Here is my problem: I'm trying to update a row via c# winform application. The update query generated from the application is formatted correctly. I tested it in the sql server environment, it worked well. When i run it from the application i get 0 rows updated. Here is the snippet that generates the update statement using reflection - don't try to figure it out. Carry on reading after the code portion: public void Update(int cusID) { SqlCommand objSqlCommand = new SqlCommand(); Customer cust = new Customer(); string SQL = null; try { if ((cusID != 0)) { foreach (PropertyInfo PropertyItem in this.GetType().GetProperties()) { if (!(PropertyItem.Name.ToString() == cust.PKName)) { if (PropertyItem.Name.ToString() != "TableName") { if (SQL == null) { SQL = PropertyItem.Name.ToString() + " = @" + PropertyItem.Name.ToString(); } else { SQL = SQL + ", " + PropertyItem.Name.ToString() + " = @" + PropertyItem.Name.ToString(); } } else { break; } } } objSqlCommand.CommandText = "UPDATE " + this.TableName + " SET " + SQL + " WHERE " + cust.PKName + " = @cusID AND PhoneNumber = " + "'" + "@phNum" + "'"; foreach (PropertyInfo PropertyItem in this.GetType().GetProperties()) { if (!(PropertyItem.Name.ToString() == cust.PKName)) { if (PropertyItem.Name.ToString() != "TableName") { objSqlCommand.Parameters.AddWithValue("@" + PropertyItem.Name.ToString(), PropertyItem.GetValue(this, null)); } else { break; } } } objSqlCommand.Parameters.AddWithValue("@cusID", cusID); objSqlCommand.Parameters.AddWithValue("@phNum", this.PhoneNumber); DAL.ExecuteSQL(objSqlCommand); } else { //AppEventLog.AddWarning("Primary Key is not provided for Update.") } } catch (Exception ex) { //AppEventLog.AddError(ex.Message.ToString) } } This part below: objSqlCommand.CommandText = "UPDATE " + this.TableName + " SET " + SQL + " WHERE " + cust.PKName + " = @cusID AND PhoneNumber = " + "'" + "@phNum" + "'"; generates dml: UPDATE CustomerPhone SET PhoneTypeID = @PhoneTypeID, PhoneNumber = @PhoneNumber WHERE CustomerID = @cusID AND PhoneNumber = '@phNum' @PhoneTypeID and @PhoneNumber are gotten from two properties. We assigned the value to these properties in the presentation layer from the user input text box. The portion below where fetches the values: objSqlCommand.Parameters.AddWithValue("@" + PropertyItem.Name.ToString(), PropertyItem.GetValue(this, null)); The code below fills the values of WHERE: objSqlCommand.Parameters.AddWithValue("@cusID", cusID); objSqlCommand.Parameters.AddWithValue("@phNum", this.PhoneNumber); The final code should look as: UPDATE CustomerPhone SET PhoneTypeID = 7, PhoneNumber = 999444 WHERE CustomerID = 500 AND PhoneNumber = '911'; Phone type id is 7 - user value that is taken from text box Phone number is 999444 - user value that is taken from text box The above final update statement works on the sql environment, but when running via the application, the execute non query runs ok and gets 0 rows updated! I wonder why?

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• How to display content of one site in another using PHP?

  - by Joyan

  Hello I'm trying to show contents of two websites in one another , someone suggest me to use RSS reader but my question is : is there anything else i could try to show the contents , beside using rss !? i thought i can connect to the database of another website , but that didnt work / thanks in advance

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• which header do i need to send to browser when responding with flash file

  - by user63898

  hello all i build ed simple single threaded web server that i embedded to my application in Qt c++ this server are responding fine with simple html pages , but when i try to response with flash file embedded inside the html all the html string just got printed to the browser my question is what headers and http responses do i need to unable me to serve flash content to the browser Thanks

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