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• Java: InitialContext.lookup(String) - what should the value o the parametr be?

  - by bguiz

  To instantiate a Stateful Session Bean inside of a JSP/ servlet, I am using: InitialContext ic = new InitialContext(); SomeStateful state = (SomeStateful) ic.lookup("java:comp/env/SomeStatefulBean"); Trial and error had me prefix the name of my EJB with java:comp/env/, so the above works (on Glassfish 2.1). However I want to know what the proper way to obtain this prefix is. Is there a CLI tool or function somewhere in the admin panel that will allow we to examine/ alter this? Is this platform/ application server dependant? Is there a setting within my ear, EJB-jar or war which I can examine or alter for this? (Forgive the beginner question) Thanks!

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• advantages of Zend_Db_Table vs raw (My)SQL?

  - by sunwukung

  Currently working on a new Zend application and developing the Model. Having worked with Zend_Db_Table before, I opted to replace references in the Model to the Table API with a custom SQL script to take care of data access duties. Now I'm looking at developing a new application/domain model, and I wanted to get some feedback from people re: their experiences with Zend_Db API vs raw SQL, and use cases where it would be preferable to use the API. From a project perspective, the DB platform is unlikely to change from MySQL - so it doesn't need to be particularly abstract - and I assume writing a custom SQL API will be more performant than the assorted classes the Zend DB API requires.

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• Debugging/Running executables in cmake/Visual Studio project

  - by Paul

  We are moving from hand-managed Visual Studio projects to cross platform cmake. We used to open a solutions file, select a project as "Startup Target" and push Ctrl+F5 or F5 debug or run. Now cmake has this install concept. It requires me to run the install target. But the install project doesn't have any executables set so it can not be used to start with debugging. If I set my executable project as a startup target, then install will not run, so I can not debug. I am sure there is a better way of doing this. Any ideas ?

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• Is there a high-level gestures library for iPhone development?

  - by n8gray

  The iPhone platform has a number of common gesture idioms. For example, there are taps, pinches, and swipes, each with varying number of fingers. But when you're developing an app, it's up to you to implement these things based on low-level information about the number and locations of touches. It seems like this is a prime candidate for a library. You would register a delegate, set some parameters like multi-tap interval and swipe threshold, and get calls like swipeStarted/Ended, pinchStarted/Ended, multiTap, etc. Does such a library exist?

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• Open Source CMS with linked sub-sections and users

  - by Teegijee

  I work at a small college that wants to make "sites" for all of the academic departments (~30). I managed to talk them out of their original idea: 30 individual Wordpress installations. What a maintenance nightmare! What I'm looking for is a CMS (preferably Python or PHP, as those are my areas of expertise) that can automagically create a subsection (or subsite, whatever the appropriate vernacular) complete with user and a couple of headings based on a template. So, I could just click a button and have a new subsection for a new department complete with its own authorized user, and default subsection headings/menu/pages. Is this just wishful thinking? I don't mind getting my hands dirty (this would be the whole of my job duties), so what platform would be a good starting point for something like this? Open source is a must for me as I have literally no budget, and I'm probably going to have to dig pretty deep into the application.

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• Creating java executable using JNI ?

  - by Xinus

  I am trying to create executable under windows platform for Java program using JNI ,C/C++ and invocation API, I have already created jar file for my program which includes all dependencies. I want to embed it in exe file, I was successful in running simple main class(present in file system) using JNI invocation API, I am planning to add jar file as resource in C/C++ program. But I don't know how do I run that jar file , One option is create temporary jar file on file system and run it using java, But I do not want to expose my jar file to everyone for security reasons, How can I run serialized jar file on the fly using JNI ?

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• (Newbie) Amazon Web Services Apache Server

  - by Samnsparky

  Hello! I am trying to get a feel for the costs imposed by running apache on AWS continually. Assuming that the service is scarcely used, does anyone know how many cpu hours that would eat up in a month just by sitting there and running? I understand that this is slightly impractical but I am trying to figure out what the cost of entry is to deploy an application on this platform (as compared to GAE). I suspect it to be small but I would like to know. Thank you for your help, Sam

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• Microsoft sublanguage string to locale identifier

  - by Jacob

  I can't seem to find a way to convert, or find, a local identifier from a sublanguage string. This site shows the mappings: http://msdn.microsoft.com/en-us/library/dd318693(v=VS.85).aspx I want the user to enter a sublanguage string, such as "France (FR)" and to get the local identifier from this, which in this case would be 0x0484. Or the other way around, if a user enters 0x0480 then to return French (FR). Has anyone encountered this problem before and can point me in the right direction? Otherwise I'm going to be writing a few mapping statements to hard code it and maintain future releases if anything changes. BTW, I'm coding in C++ for Windows platform. Cheers

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• When to use CreateChildControls() vs. embedding in the ASPX

  - by Kelly French

  I'm developing a webpart for SharePoint 2007 and have seen several posts that advise to do all the creation of controls in the code-behind. I'm transitioning from Java J2EE development so I don't have the platform history of .Net/ASP/etc. In other places it shows how you can do the same thing by embedding the control definition into the asp page with tags My question is this: What is the rule governing where to implement controls? Has this rule changed recently, ASP vs ASP.Net or ASP.Net MVC maybe? Is this advice limited to SharePoint development?

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• How do I diff two spreadsheets?

  - by neu242

  We have a lot of spreadsheets (xls) in our subversion repository. These are usually edited with gnumeric or openoffice.org, and are mostly used to populate databases for unit testing with dbUnit. There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely tedious and error prone. I've found Spreadsheet Compare, but it requires Excel 2000 or later. I've also tried to convert the spreadsheets to xml and doing a regular diff, but it really feels as a last resort. Are there any tools for diffing two spreadsheets (xls or ods)? I am primarily looking for a multi-platform/open source tool.

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• Inviting friends in facebook application

  - by Ahmy

  I have a facebook application that is published at facebook platform and i used facebook API to invite friends and i have succeeded in creating invitation form but the problem is that when u invite friend and send invitation and the invitation request sent to the user and the user accept it this friend appears again in the friend list that can be invited again For example : i have friend in my friend list named X and when i send invitation to him the invitation is sent and and X accept the invitation and when i try to send invitation again the friend X appears again in the list that i can select from to send invitation this means that may i send an invitation to this user (X) and he is already playing the game i need to know how to fix this problem so friends appear in the friend list (for invitation )only friends that not use the application. My application at the following link My Game application visit it and see the problem exactly after inviting friends they will appear again is this normal in any game application? thanks in advance for any reply

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• Books on OpenGL ES targeted towards the iPhone

  - by Frank V

  There are a few posts on this site about OpenGL and the iPhone. Some even on books but I think you'll find this question is a bit different. I've searched and searched and have come to the conclusion that there are currently no books that specifically cover OpenGL ES on the iPhone platform. There are books that cover OpenGL ES [2.0] (note: the linked book covers OpenGL ES 2.0 but the iPhone uses OpenGL ES 1.1 which, I understand, is not backward compatible)... but they only have a small section for the iPhone (if any). What I want to know, is if anybody knows of any books that are forthcoming that specifically cover OpenGL ES 1.1 on the iPhone?

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• How to merge/crosslink Javadoc?

  - by Tom Wheeler

  If you have the standard Javadoc for a few different projects, how can you process them to create a single unified set of documentation in which everything is cross-linked? Ideally, the result would be similar to the documentation for the various modules in the NetBeans Platform: http://bits.netbeans.org/dev/javadoc/index.html but I've looked at their build scripts and they're predicated on you building everything from source. I'm looking for something which could also handle linking in Javadoc for third-party libraries, so I'd imagine it would need to be a post-processing operation. I can't be the first person to ever want this. Any ideas?

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• MongoDB vs CouchDB (Speed optimization)

  - by Edward83

  Hi! I made some tests of speed to compare MongoDB and CouchDB. Only inserts were while testing. I got MongoDB 15x faster than CouchDB. I know that it is because of sockets vs http. But, it is very interesting for me how can I optimize inserts in CouchDB? Test platform: Windows XP SP3 32 bit. I used last versions of MongoDB, MongoDB C# Driver and last version of installation package of CouchDB for Windows. Thanks!

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• Creating lib file from java jar using mingw/gcj

  - by Xinus

  I am trying to convert jar file to native lib file using mingw-gcj under windows platform it is thrown me the error as C:\testDir\libs>gcj -o glassfish-embedded-all-3.1-SNAPSHOT.lib glassfish-embedde d-all-3.1-SNAPSHOT.jar com/sun/codemodel/JAnonymousClass.java: In class 'com.sun.codemodel.JAnonymousCl ass': com/sun/codemodel/JAnonymousClass.java: In constructor '(com.sun.codemodel.JClas s,com.sun.codemodel.JCodeModel)': In file included from com/sun/codemodel/CodeWriter.java:15, from <built-in>:3: com/sun/codemodel/JAnonymousClass.java:21: error: verification failed at PC=3: c onstant pool index out of range com/sun/codemodel/JAnonymousClass.java:21: confused by earlier errors, bailing o ut Is it related to some java 1.6 issue or bug in gcj /

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• how to wrap text in html?

  - by amanda

  in jquery accordion control I am displaying one image along with description.but description is coming below the image.I want to display inline with the image. my code- <div> <p> <!-- avatar --> <img src="images/manage.jpg" alt="" /> <!-- /avatar --> Airlink's Managed Services supports a "build-operate-transfer" model, enabling service providers to quickly and cost-effectively build out a large-scale, broadband wireless network by initially outsourcing operational functions to Pronto and eventually transferring operations in-house, if desired. </br></p> As part of the service, Airlink provides all the back-office operations for customers from its Network Operations Center (NOC), leveraging its leading UniFi OSS platform.</p> <p> <a href = "#" >Read More.. </a> </p> </div>

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• Missing Project Template after installing ASP.NET MVC 2

  - by DotNetHacker

  Hi, I have downloaded the ASP.NET MVC 2 Release version (using Web Platform Installer) as well as the downloading the file directly from the link in WPI. No error messages are reported after the install. When I go into Visual Web Developer and select Create New project I only the project reference to ASP.NET MVC version 1.0 and not version 2 (for clarity I have all the other project types, this is just in reference to the MVC projects). I have restarted, uninstalled and restarted and installed my PC multiple times and it still won't play. When clicking add a reference I can see the MVC.dll version 2.0.0.0 and add that no problem, but cannot manually upgrade the project since the ProjectTypeGuid used is not recognized. For reference I am using Visual Web Developer 2008 on Windows XP. ASP.NET MVC version 1.0 is working fine and without issue. Hope someone else can help. DNH

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• Escape doube and single backslashes in a string in Ruby

  - by Nick Gorbikoff

  Hello. I'm trying to access a network path in my ruby script on a windows platform in a format like this. \\servername\some windows share\folder 1\folder2\ Now If I try to use this as a path, it won't work. Single backslashes are not properly escaped for this script. path = "\\servername\some windows share\folder 1\folder2\" d = Dir.new(path) I tried everything I could think of to properly escape slashes in the path. However I can't escape that single backslash - because of it's special meaning. I tried single quotes, double quotes, escaping backslash itself, using alternate quotes such as %Q{} or %q{}, using ascii to char conversion. Nothing works in a sense that I'm not doing it right. :-) Right now the temp solution is to Map a network drive N:\ pointing to that path and access it that way, but that not a solution. Does anyone have any idea how to properly escape single backslashes? Thank you

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• How to calculate a operation's time in micro second precision

  - by Sanjeet Daga

  I want to calculate performance of a function in micro second precision on Windows platform. Now Windows itself has milisecond granuality, so how can I achieve this. I tried following sample, but not getting correct results. LARGE_INTEGER ticksPerSecond = {0}; LARGE_INTEGER tick_1 = {0}; LARGE_INTEGER tick_2 = {0}; double uSec = 1000000; // Get the frequency QueryPerformanceFrequency(&ticksPerSecond); //Calculate per uSec freq double uFreq = ticksPerSecond.QuadPart/uSec; // Get counter b4 start of op QueryPerformanceCounter(&tick_1); // The ope itself Sleep(10); // Get counter after opfinished QueryPerformanceCounter(&tick_2); // And now the op time in uSec double diff = (tick_2.QuadPart/uFreq) - (tick_1.QuadPart/uFreq);

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• Designing a frontend/backend architecture

  - by wrp

  What are some good information sources on designing programs with a client/server architecture? This is for development of a desktop application, not a Web service. The only books I have found on client/server apps deal with the case of a thin client connecting to a remote database. Two good examples of what I mean are Mathematica and SuperCollider. I'm looking for platform- and language-agnostic discussion of the issues in developing a frontend/backend system. Especially useful topics would be allocation of responsibilities and options for message passing.

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• Surface Detection in 2d Game?

  - by GamiShini

  I'm working on a 2D Platform game, and I was wondering what's the best (performance-wise) way to implement Surface (Collision) Detection. So far I'm thinking of constructing a list of level objects constructed of a list of lines, and I draw tiles along the lines. ( http://img375.imageshack.us/img375/1704/lines.png ). I'm thinking every object holds the ID of the surface that he walks on, in order to easily manipulate his y position while walking up/downhill. Something like this: //Player/MovableObject class MoveLeft() { this.Position.Y = Helper.GetSurfaceById(this.SurfaceId).GetYWhenXIs(this.Position.X) } So the logic I use to detect "droping/walking on surface" is a simple point (player's lower legs)-touches-line (surface) check (with some safety approximation - let`s say 1-2 pixels over the line). Is this approach OK? I`ve been having difficulty trying to find reading material for this problem, so feel free to drop links/advice.

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• Read binary data from a MDB-file running under LAMP

  - by BusterX

  I need to be able to connect to an MDB-file in a LAMP-environment (running on Linux) and ultimately insert converted data into a Mysql db. The data I need to access is stored as a BLOB (Long Binary Data according to Access) in the MDB file. I have not yet been able to actually have a look at the data but I have been told that the BLOB consists of byte strings. Something along the lines of: 0x1c 0x10 0x27 0x00 0x00 I need to parse the byte strings and convert these to a format that is human readable. I do have access to the documentation that explains the various byte strings. So this is really two questions: How do a get access to the MDB file via PHP* (running under LAMP) and read the BLOB (I do not have access to a Windows-platform)? What would be the best way to parse the binary data (in PHP*) once I am able to connect to the MDB-file? *Or are there other methods/languages that are more appropriate?

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• Why is silverlight so slow? (Especially when compared to Flash)

  - by Sahat

  I hope I don't have to explain what is Silverlight to SO community. Anyway TemplateMonster.com has recently released new Silverlight themes that have been ported from Flash. Silverlight Templates | Template Monster I've noticed a significant lag on my Macbook Pro 13" in loading the template page in Silverlight. And not just Template Monster templates but other silverlight applications on the web as well. Now why is that? I've been hearing how great Silverlight is and how it's a great business platform blah blah blah. And now Microsoft plans to build Windows Phone 7 on top of Silverlight framework. As much as I want to praise Silverlight, so far it's been nothing but a disappointment to me. Could someone enlighten me, what is so great about Silverlight, and why should I put up with that starting up lag? Silverlight was really next up on my "stuff to learn" list this summer, but now I am not so sure...

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• Can't find AVD or SDK manager in Eclipse

  - by zigzag

  Seems like I'm having some problems after updating my android sdk tools and platform-tools using the sdk manager. The problem is that, after updating, I found that the avd or sdk options in the windows dropdown menu in eclipse are gone! And, I can't find any option to create an android project from file-new projects any more. I tried removing the ADT from eclipse and the software site "https://dl-ssl.google.com/android/eclipse/" from "available software sites" and then reinstalled the ADT from "https://dl-ssl.google.com/android/eclipse/" using help-install new software. The installation was successful, but I still don't have any option for shortcuts to the SDK manager or the AVD in eclipse, and neither can I create a new android project. By the way, the android perspectives are not gone, they are still here. Also, I can manually open the avd and sdk manager from the directory where I have installed them. Can anyone please show me a workaround? Any help would be greatly appreciated.

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• How to flush data in php and disconnect user but keep the script alive

  - by Rodrigo

  This is a trick question, while developing a php+ajax application i felt into some long queries, nothing wrong with them, but they could be done in background. I know that there's a way to just send a reply to user while throwing the real processing to another process by exec(), however it dosen't feels right for me, this might generate exploits and it's not pratical on making it compatible with virtual servers and cross platform. PHP offers the ob_* functions although they help on flushing the cache, but the user will keep connected until the script is running. I'm wondering if there's an alternate to exec to keep a script running after sending data to user and closing connection/thread with apache, or a less "dirty" way to have processing data sent to another script.

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