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• Maven: Multiple class with the same path implemented in different jar

  - by Phuong Nguyen de ManCity fan

  I'm running into trouble with having multiple class with the same path (i.e. same name, same package!!!). For some reason, gwt-dev comes with its own version of org.apache.xerces.jaxp.DocumentBuilderFactoryImpl and javax.xml.parsers.DocumentBuilderFactory. At the same time, spring also depends on these classes but from different jar. I don't know what should be, but look like xalan & xml-api are the two dependencies that spring depends on (these dependency are optional) Funny thing is that eclipse can run the same code (it's a unit test) without problem, but surefire cannot. So I guess the problem is due to the way each runner consider the priority of each jar. Now come to the question: How can I setup my POM so that I can sure that when ever any code running inside my app, then class from a jar will be selected over class from other jar? Thanks.

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• In Log4Net XML configuration is Priority the same thing as Level?

  - by Michael Levy

  I inherited some code that uses the priority element under the root in its xml configuraiton. This is just like the example at http://iserialized.com/log4net-for-noobs/ which shows: <root> <priority value="ALL" /> <appender-ref ref="LogFileAppender" /> <appender-ref ref="ConsoleAppender"/> </root> However, the log4net configuration examples at http://logging.apache.org/log4net/release/manual/configuration.html always show it using the level element: <root> <level value="DEBUG" /> <appender-ref ref="A1" /> </root> In this type of configuration is <priority> the same as <level> ? Can someone point me to somewhere in the docs where this is explained?

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• Getting all the cookies including those from google analytics from one webpage

  - by DixieFlatline

  Hello! I use apache 4 java libs for http get connections. I get all cookies from 2 other pages. But one other webpage contains google analytics cookies(utma,utmz...) and classic session id cookie (checked with firebug). When i try to get the cookies i only get sesson id cookie. Is there any trick to get all the cookies from java in connection with google analytics? If i want to make a http post, it seems that i have to send google analytics cookies too. I can copy my code if somebody wants, but it works on other pages(for printing cookies). Thank you

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• How to configure grails and shiro to mark cookies secure?

  - by j4y

  I'm using Grails 2.2.4 with the Shiro plugin (v1.1.4) and would like to mark the cookies as secure so the session information won't be sent over http. This is the attribute I want to set: securityManager.sessionManager.sessionIdCookie.secure = true The shiro source says to use the Grails bean property override mechanism, which is grails-app/conf/spring/resources.groovy How can I override just the one setting? // If the legacy 'security.shiro.filter.config' option is set, // use our custom INI-based filter... if (application.config.security.shiro.filter.config) { log.warn "security.shiro.filter.config option is deprecated. Use Grails' bean property override mechanism instead." 'filter-class'('org.apache.shiro.grails.LegacyShiroFilter') 'init-param' { 'param-name'('securityManagerBeanName') 'param-value'('shiroSecurityManager') }

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• PHP ZF: I can't debug my IndexController.php actions code

  - by overthetop

  Hi I'm new to php and I'm using xampp, eclipse pdt, xdebug. I've set xdebug so that I can debug my site on apache but when I click 'debug as web page' in the eclipse ide only the breakpoint in the public/index.php and in the views get hit. If I put a breakpoin here public function indexAction() { // action body $this->view->s = "deam"; } the debugger don't stop?! why is that? I can't debug the most important part of my application. :( Plese help me with this.

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• Lightweight messaging (async invocations) in Java

  - by Sergey Mikhanov

  I am looking for lightweight messaging framework in Java. My task is to process events in a SEDA’s manner: I know that some stages of the processing could be completed quickly, and others not, and would like to decouple these stages of processing. Let’s say I have components A and B and processing engine (be this container or whatever else) invokes component A, which in turn invokes component B. I do not care if execution time of component B will be 2s, but I do care if execution time of component A is below 50ms, for example. Therefore, it seems most reasonable for component A to submit a message to B, which B will process at the desired time. I am aware of different JMS implementations and Apache ActiveMQ: they are too heavyweight for this. I searched for some lightweight messaging (with really basic features like messages serialization and simplest routing) to no avail. Do you have anything to recommend in this issue?

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• Separation of static and dynamic content in Java EE applications

  - by Dan

  We work with IBM products and we typically use IBM Http Servers (read Apache) as a reverse proxy for our application servers. For performance reasons we serve static content (.gif, .jpg, .css, .html etc.) from our http servers, to ease the burden a bit from the application server. So far, we have to distribute files to http server and configure it manually (writing custom scripts at best.) The problem is the effort needed to keep everything in synch, especially when you need to update the app. Does any Java EE product support this “out of the box”? Is there a way to have application server do this automatically, like in cluster configuration for example, where master node is in charge of distributing the application to other nodes and for keeping everything in synch.

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• PHP Launch Execute Files Concurrently

  - by Ozzy

  Hi all. Basically, I was doing some testing using apache bench. The file i was testing takes 2 seconds to execute (its optimised, it connects to an external server hence the slowdown) Basically I found that the more concurrent useres i emulated, the more executions of the file i could do per second. Is there anyway that i can do something like this in php? : <?php execute_file('file.php'); execute_file('file.php'); execute_file('file.php'); execute_file('file.php'); execute_file('file.php'); ?> That would execute the file 5 times but would NOT wait for the files to finish downloading so the above example would quickly call the 5 functions then exit. Im assuming somesort of timeout would be used?

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• Using Lucene to Query File properties in Windows

  - by sneha

  Hi All, I am planning to use Apache lucense in one of my projects, I want to index files based on the file properties (I won’t be indexing the data) and I want lucense to query the index so that I can quickly find list of files to based on the properties . E.g: give me all the files with access time greater than 10/10/2005 and access time less than 10/04/2010 and file created by james. Can i use Lucene for these kind of projects ? or i better of using windows search (the foor print is very heavy almost 5 MB :( ) and i have to bundling this as part of my application is seems to tough. Can you please suggest is there any better alternatives here?

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• Weirdest PHP error

  - by yes123

  I found in my error log this [12-Nov-2011 19:22:26] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:31] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:39] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:40] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:46] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:51] PHP Warning: Attempt to assign property of non-object in on line 1768776801 Of course I don't have any script with 1 bn lines. PHP Version 5.3.3-7 Apache 2 The other weird thing is that I have a set_error_handler( 'myHandler' ); To write in the error log other inforamtion too, but with this error it seems PHP just ignores my error_handler =/ I don't have any code that can generate this errore before my call to set_error_handler

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• Pig: Count number of keys in a map

  - by Donald Miner

  I'd like to count the number of keys in a map in Pig. I could write a UDF to do this, but I was hoping there would be an easier way. data = LOAD 'hbase://MARS1' USING org.apache.pig.backend.hadoop.hbase.HBaseStorage( 'A:*', '-loadKey true -caching=100000') AS (id:bytearray, A_map:map[]); In the code above, I want to basically build a histogram of id and how many items in column family A that key has. In hoping, I tried c = FOREACH data GENERATE id, COUNT(A_map); but that unsurprisingly didn't work. Or, perhaps someone can suggest a better way to do this entirely. If I can't figure this out soon I'll just write a Java MapReduce job or a Pig UDF.

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• I'm mplement http live streaming video from my webserver to iPhone. Will I get rejected for bandwid

  - by yujean

  Apache webserver setup added: AddType application/x-mpegURL .m3u8 AddType video/MP2T .ts to "httpd.conf" file. Movie file preparation I have 3 movie files (9mb - 25mb each). Used QuickTime to convert movies into iPhone format. Used mediafilesegmenter to convert .m4v into 10-second segments of .ts files, with an accompanying .m3u8 file. Placed these in a folder on webserver. iPhone App implementation Created UIWebView whose URL points to http://71.191.59.68/~yujean/stream.html Simulator accesses the site and streams the movie-files just fine. Question Will I still get rejected by apple for bandwidth issues over the 3G and/or Edge network? Do I need to somehow check which network the end-user is on first? And then provide a different movie accordingly? If so, how do I do that ...? Thank you in advance, Eugene

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• Will PHP Die In Web Page Development World?

  - by Morgan Cheng

  I know that PHP is still the most popular web programming language in the world. This question just want to bring some of my concerns about PHP. PHP is naturally bound to C10K problem. Since PHP (generally run in Apache) cannot be event-driven or asynchronous, each HTTP request will occupy at least one thread or process. This makes it resistant to be more scalable. Currently, a lot of web sites (like Facebook) with high performance and scalability still depends on PHP in their front end servers. I suppose it is due to legacy reason. Is it possible that PHP will be replaced by language more suitable for C10K?

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• .NET & ASP vs PHP

  - by gargantaun

  Earlier today I asked wether it would be a good idea to develop websites using C#. Most of the answers pointed towards .NET and ASP. Currently I develop with PHP. I've dabbled with Python and RoR but I always come back to PHP. This is the first time I've looked at .NET and ASP. A bucket load of Google searches later I'm not really seeing much support for ASP online but then it all seems a bit Biased towards PHP/Apache/MySQL. It looks like there's a fair amount of .NET and ASP folk around here so I figured it's worth a shot asking for their input in attempt to try and address the balance in my own head. It can't all be bad. What advantages are there to .NET and ASP over PHP?

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• Any foundation to administrate an Android open source application?

  - by Nicolas Raoul

  Our open source application is quite popular, and we are many developers. The app uses my Android Market account, and I shared the keys with a developer. But if both of us disappear, the application's Market account will be lost, and all users trapped. Giving the keys to all developers is not a solution either, for security reasons. Is there a foundation (like in Mozilla Foundation or Apache Foundation) that could accept to hold our Android Market account and release new versions in accordance with their own guidelines and our community consensus? There are quite a lot of Open Source foundations, but I could not find any that tackles this particular aspect of Android applications.

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• Java Swing app hangs when run in normal mode but runs fine in debug mode

  - by snocorp

  I am writing a basic Java application with a Swing front-end. Basically it loads some data from a Derby database via Apache Cayenne and then displays it in a JTable. I'm doing my development in Eclipse and I don't think it's important but I'm using Maven for dependencies. Now this works fine when I run using Debug but it seems to hang the display thread when I use the Run button. I've done a thread dump and I'm not 100% certain but everything looks good. I used Java VisualVM and the threads look fine there as well. Strangely it seems to work intermittently. It's pretty consistent though and easy to reproduce. If anyone has any ideas, I'm all out of them.

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• How to pass an xpath into an xquery function declaration

  - by topmulch

  Hi all, I use Apache Tomcat's Exist DB as an XML database and am trying to construct a sequence by passing the following xpath, defined in FLWOR's 'let' clause: $xpath := $root/second/third into a locally defined function declaration, like so: declare function local:someFunction($uuid as xs:string?, $xpath as xs:anyAtomicType?) { let $varOne := $xpath/fourth[@uuid = $uuid]/fifthRight let $varTwo := $xpath/fourth[@uuid = $uuid]/fifthLeft let $combined := ($varOne,$varTwo) return $combined }; Of course, when entering this in the exist xquery sandbox, I get Type: xs:anyAtomicType is not defined. What should I use in place of it, or should I do this a different way? Thanks in advance for any suggestions.

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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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• .htaccess not working in subfolder

  - by Staffan Estberg

  Hello, I have a couple of sites that are currently under development and I've put them under a specific subfolder for clients/co-workers to view - "http://dev.staffanestberg.com/site-name/". I've run into some problems getting the sites working with .htaccess. I can reach the index page by typing in the url for a site folder but neither img/style/js/etc linking or page rewriting works. Looking for a solution to this, Apache's "RewriteBase" seems to be the most likely one, however I can't get it to work. Tried RewriteBase http://dev.staffanestberg.com/site-name/ RewriteBase /site-name What would be the correct method? Thanks in advance, -Staffan

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• XAMPP mail not working with PHP mail() function.

  - by user296516

  Hi gusy, I just installed XAMPP, Apache is running, so is MySQL and Mercury. In Dreamweaver I created a php file with a mail($to,$subject,$msg,'From:'.$email); function, but when I ran the file from localhost it showed an error. After playing around with xampp control panel, turning mercury on and off, it's not showing any errors, yet is not send the email either... any ideas? the 'admin' button on the cp for mercury does nothing. Thanks! R

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• In a Maven project, what are reasons for either a nested or a flat directory layout?

  - by Hanno Fietz

  As my Maven project grows, I'm trying to stay on top of the project structure. So far, I have a nested directory layout with 2-3 levels, where there's a POM on each level with module entries corresponding to the directories at that level. POM inheritance (parent property) does not necessarily follow this, and is not relevant for the purpose of this question. Now, while the nested structure seems pretty natural to Maven, and it's nice and clean as long as you are on one particular level, I'm starting to get confused by what I look at in my IDE (Eclipse and IntelliJ IDEA). I had a look at the Apache Felix sources, and they have a pretty complex project in what seems to be a flat directory structure, so I'm wondering if this would be a better way to go. What are some pros and cons for either approach that you have experienced in practice? Note that this question (which I found meanwhile) seems to be very similar. I'll leave it to the community to decide whether this should be closed as a duplicate.

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• Can Tomcat provide seperate (or HTTPS only) sessions for HTTPS requests?

  - by Joe

  I have a web application which contains both secure (SSL) and non-secure pages. A user can login to the site and must appear logged-in in both the SSL and non-SSL areas. (NB. SSL isn't implemented via Tomcat, but via Apache HTTPD servers which sit in front of Tomcat - so Tomcat has no SSL configuration.) The logged-in state is currently maintained via a servlet session (using Tomcat's vanilla session management). The obvious issue with this approach is that the JSESSIONID cookie is transported over both HTTP and HTTPS connections, meaning that it's potentially possible to intercept it and hijack the session. Are there any solutions to this without rolling our own session management (i.e. does Tomcat cater for this situation)? I'm prepared to implement our own session management, but don't want to reinvent something that may already be supported.

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• How to check PHP filecode syntax in PHP?

  - by Tower

  Hi, I am in a need of running the PHP parser for PHP code inside PHP. I am on Windows, and I have tried system("C:\\Program Files (x86)\\PHP\\php.exe -l \"C:/Program Files (x86)/Apache/htdocs/a.php\"", $output); var_dump($output); without luck. The parameter -l should check for correct PHP syntax, and throw errors if some problems exist. Basically, I want to do something similar to this picture: That is, to be able to detect errors in code.

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• Generate Javadoc for interfaces only using Ant script?

  - by ipkiss

  Hi all, I am using Apache Ant to generate Javadoc for my program which has many projects(or modules). However, I just want to generate Javadoc for Interfaces ONLY and I do not know how to check if a file is a class or interface in Ant. Someone suggested me that I should use and specify a list of files to exclude or include. However, there are hundreds of files in my program and specifying a list of class files to exclude is impossible. Does anyone have some ideas, please?

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• How to sanitize log messages in Log4j to save them in database

  - by Rafael

  Hello, I'm trying to save log messages to a central database. In order to do this, I configured the following Appender in log4j's xml configuration: <appender name="DB" class="org.apache.log4j.jdbc.JDBCAppender"> <param name="URL" value="jdbc:postgresql://localhost/logging_test" /> <param name="user" value="test_user" /> <param name="password" value="test_password" /> <param name="sql" value="INSERT INTO log_messages ( log_level, message, log_date ) VALUES ( '%p', '%m', '%d{yyyy-MM-dd HH:mm:ss}' )" /> </appender> This works fine, except some of the messages contain ', and then the appender fails. Is there an easy way to do this?

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