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Last modified by Markus Ruggiero on 2017/02/20 21:13
From version 36.1
edited by bogo
on 2011/11/07 12:55
Change comment: There is no comment for this version
To version 30.1
edited by Johan Henselmans
on 2010/02/12 09:08
Change comment: There is no comment for this version

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1 -XWiki.bogo
1 +XWiki.johanhenselmans
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1 -[[JRebel>>http://jrebel.com]] is a tool from [[ZeroTurnaround>>http://www.zeroturnaround.com]] that makes it possible for Java developers to instantly see any code change made to an app //without// redeploying. JRebel lets you see code changes instantly, versioning classes and resources individually and updating one at a time instead of as a lump application redeploy.
1 +JRebel (previously called javarebel is a tool from [[ZeroTurnaround>>http://www.zeroturnaround.com]]).
2 2  
3 -=== How to install and use JRebel ===
3 +It is a java library that makes it possible to change java code while running a project in WOLips and see the results without having to restart. It is a great timesaver.
4 4  
5 -* Get a free 30-day license, a[[open source developer license>>http://sales.zeroturnaround.com]] (Get JRebel for free section) or a paid license from [[ZeroTurnaround>>http://www.zeroturnaround.com]]
6 -* Put the license file (jrebel.lic) into a directory named .jrebel in your home directory. ( /.jrebel/jrebel.lic )
7 -* Get the JRebel plugin. Go to Eclipse->Preferences->Available Software Sites, add [[http://www.zeroturnaround.com/update-site/]]
5 +If you are running Eclipse 3.4, you should have a look at the screencast from David Avendasora at [[http://www.wocommunity.org/podcasts/WOJavaRebel_Setup.mov]].
8 8  
9 -[[image:AddZeroTurnAround.png]]
7 +If you are running WOLips 3.5.1 or bigger, you are lucky: the JRebel plugin is included in the current WOLips for there versions.
10 10  
11 -* Download the Jrebel Eclipse Integration and perhaps the JRebel Eclipse Debugger Integration from install new Software
9 +How to install and use JRebel
12 12  
13 -[[image:InstallSoftware.png]]
11 +1. Download you version from [[ZeroTurnaround>>http://www.zeroturnaround.com]]
12 +1. put the jrebel.jar somewhere nice, so you can use it in whatever project you are working
13 +1. Go to WOLips->Preferences->Install Software, add http:~/~/www.zeroturnaround.com/update-site/
14 +1. Download the Jrebel Eclipse Integration and perhaps the JRebel Eclipse Debugger Integration from install new Software,
15 +1. Make sure you have checked the JRebel Plugin in WOLips if you download the newest version.
16 +1. Goto to preferences->JRebel, and point the Path to jrebel.jar to the jrebel.jar location from action 2.
14 14  
15 -* Make sure you have checked the JRebel Plugin in WOLips if you download the newest version.
16 -
17 -[[image:UpdateWOLipsWithJRebel.png]]
18 -
19 -* Restart Eclipse. You will now have a Jrebel preference item in your eclipse preferences and JRebel is ready for use with your projects.
20 -
21 21  You have now installed and setup the stuff that WOLips needs to know about the location of JRebel.jar.
22 22  
23 -== How do you use it? ==
20 +How do you use it?
24 24  
25 25  Well that has become very simple since the inclusion of Quinton Dolan's JRebel plugin in WOLips.
26 26  
27 -For a project in which want to use jrebel to change java code while running, go to the run configuration of the project, under the contextual menu Run As->Run Configurations.
24 +For a project in which want to use jrebel to change java code while running, go to the run configuration of the project, under the contextual menu Run As->Run Configurations.
28 28  
29 29  In the Run Configuration of a WOApplication you will notice an extra Tab, called JRebel.
30 30  
31 -Select the tab, and check the check boxes to enable JRebel Agent and (eventually) Enable debug logging.
28 +Select the tab, and check the check boxes to enable JRebel Agent and (eventually) Enable debug logging.
32 32  
33 -[[image:EnableJRebel.png]]
30 +Start you project from the Run Configuration.
34 34  
35 -Start you project from the Run Configuration.
32 +Suddenly, you will get messages about jrebel being loaded, and some extra information about what settings are available as extra arguments.
36 36  
37 -Suddenly, you will get messages about jrebel being loaded, and some extra information about what settings are available as extra arguments.
34 +Start changing your java code on the fly: watch and start saving time.
38 38  
39 -{{info}}
40 -
41 -If you get out of memory error with respect to "Perm Gen space", just allocate more Perm Gen memory in command line launch args in your launch configuration. For example:
42 -
43 -\-XX:MaxPermSize=384m
44 -
45 -{{/info}}
46 -
47 -Start changing your java code on the fly: watch and start saving time.
48 -
49 -[[image:JRebelWOLipsLog.png]]
50 -
51 -* Profit (for the europeans: Extra Time Off)
52 -
53 -== More information ==
54 -
55 -[[Old screencast from David Avendasora about using JRebel with Eclipse 3.4>>http://www.wocommunity.org/podcasts/WOJavaRebel_Setup.mov]].
36 +Profit! (for the europeans: Extra Time Off!)