ext-service classes not picked up on Ubuntu 12.04 64bits

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 6.1.0 CE GA1
• Fix Version/s: 6.1.1 CE GA2
• Component/s: Legacy > Extension Environment
• Labels:
  • ext
  • ubuntu
• Environment: Development: OS X 10.7.4 & OS X 10.8.0, Eclipse 3.7.2, Liferay IDE 1.5.3.v201205280937, Liferay SDK 6.1.0 GA1 ; Deployment: ; a) OS X Server 10.7.4, Tomcat bundle ; b) Ubuntu 12.04 64bits, Tomcat bundle
• Similar Issues: Show 5 results ; ;

  LPS-29565	Forked processes aren't picking up Ext modifications
  LPS-5404	PortletAutoDeployListener picks up "vanilla" WAR files even if they aren't portlet applications
  LPS-1791	Allow extensions to portal.properties to be picked up from liferay.home
  LPS-22377	user.contry and user.language not picked up from portal-ext.properties?
  LPS-6122	Display text in Language properties of plugins can't be picked up properly in Control Panel

Hello,

I run OS X 10.7.3 and 10.8.0 on my local machine

I have
1) downloaded the tomcat bundle
2) downloaded the sdk
3) installed the Liferay IDE in Eclipse 3.7.2
4) created an ext plugin and changed some classes in ext-impl (VelocityVariablesImpl, WebServerServlet, LoginAction and LoginUtil) and in ext-service (NavItem)
5) I have build and deployed the ext on a local liferay tomcat bundle
===> everything works fine

6) I have build (war file) the ext environment and copied the war file to an XServe running 10.7.4 and a tomcat bundle
7) I have copied the war file to the deploy folder and stop/started the tomcat server
===> everything works fine

8) I have installed a virtual machine in vSphere running Ubuntu 12.04 LTS 64 bits
9) I have downloaded and installed the Sun/Oracle JDK 1.6.0_33
10) I have downloaded the tomcat bundle and unzipped it
11) I have set the java using update-alternatives and setting the $JAVA_HOME in /etc/profile
12) I have copied my war file to the Ubuntu server
13) I have deployed my ext to the tomcat
===> the classes in ext-impl are being used by tomcat, the classes in ext-service are NOT being used

14) I have tar'ed the liferay tomcat bundle on the Xserve (that works fine) and copied it to the Ubuntu and untar'ed it
===> the classes in ext-service are NOT being used

The classes in ext-service are deployed in a jar file under TOMCAT/lib/ext the jar file is named ext-technolink-ext-service.jar. I if leave the file in lib/ext, the classes are NOT being used, if I copy the jar file into TOMCAT/lib, then the classes are in fact being used.

I had noticed that if I install the openjdk (6 or 7) using apt-get on ubuntu, liferay is failing in custom themes that rely on SASS. It seems that JRuby doesn't work correctly with openjdk. Therefore I relied on the Sun/Oracle JDK to run the tomcat.

Why is the ext not working on Ubuntu when it works perfectly well on both my local machine and the XServe?

Any help is greatly appreciated.

Alex

[Oliver Bayer]

Hi Alex,

thanks for raising this issue. I'm running into the same issue. I've found a quick-and-dirty workaround described in the following forum thread:
http://www.liferay.com/community/forums/-/message_boards/message/16295178

HTH Oli

[Alex Weirig]

Hi Olivier,

good to hear I'm not the only one ... I was wondering if I did something wrong but since Liferay worked on all other machines I guessed not.

I "worked-around" the problem by creating a symbolic link in the $TOMCAT/lib/ folder that points to the ext's jar file in $TOMCAT/lib/ext.

Unfortunately the people at Liferay seem to no longer follow their JIRA as this ticket has been opened over a month ago and nobody answered...

Alex

[Mika Koivisto]

Sorry for the delayed response. You shouldn't override classes directly using Ext plugin. It is totally up to the application server classloader on what order it loads the jar files so it's unpredictable. You should rather extend the original class and change configuration to use your new class. I know that's not always possible with some utilities. In those cases you may have to use some workaround like extracting the classes to WEB-INF/classes or putting them to another directory that the application server loads before the directory that contains the jar you want to override. Those cases are not supported by Ext.