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Last modified by Markus Ruggiero on 2017/02/20 21:13
From version 38.1
edited by bogo
on 2011/11/07 12:55
Change comment: There is no comment for this version
To version 34.1
edited by Johan Henselmans
on 2010/02/12 09:22
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>>url:http://jrebel.com||shape="rect"]] is a tool from [[ZeroTurnaround>>url:http://www.zeroturnaround.com||shape="rect"]] 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 +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 +
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]].
6 +
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.
8 +
3 3  === How to install and use JRebel ===
4 4  
5 -* Get a free 30-day license, a[[open source developer license>>url:http://sales.zeroturnaround.com||shape="rect"]] (Get JRebel for free section) or a paid license from [[ZeroTurnaround>>url:http://www.zeroturnaround.com||shape="rect"]]
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/>>url:http://www.zeroturnaround.com/update-site/||shape="rect"]]
11 +* Download you version from [[ZeroTurnaround>>http://www.zeroturnaround.com]]
12 +* put the jrebel.jar somewhere nice, so you can use it in whatever project you are working
13 +* Go to WOLips->Preferences->Install Software, add http:~/~/www.zeroturnaround.com/update-site/
8 8  
9 -[[image:attach:AddZeroTurnAround.png]]
15 +[[image:AddZeroTurnAround.png]]
10 10  
11 11  * Download the Jrebel Eclipse Integration and perhaps the JRebel Eclipse Debugger Integration from install new Software
12 12  
13 -[[image:attach:InstallSoftware.png]]
19 +[[image:InstallSoftware.png]]
20 +
14 14  
15 15  * Make sure you have checked the JRebel Plugin in WOLips if you download the newest version.
16 16  
17 -[[image:attach:UpdateWOLipsWithJRebel.png]]
24 +[[image:UpdateWOLipsWithJRebel.png]]
18 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.
26 +* Restart Eclipse. You will now have a Jrebel preference item in your eclipse preferences
27 +* Goto to Preferences->JRebel, and point the Path to jrebel.jar to the jrebel.jar location from action 2.
20 20  
29 +[[image:PathToJRebel.png]]
30 +
21 21  You have now installed and setup the stuff that WOLips needs to know about the location of JRebel.jar.
22 22  
23 23  == How do you use it? ==
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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.
37 +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.
41 +Select the tab, and check the check boxes to enable JRebel Agent and (eventually) Enable debug logging.
32 32  
33 -[[image:attach:EnableJRebel.png]]
43 +[[image:EnableJRebel.png]]
34 34  
35 -Start you project from the Run Configuration.
45 +Start you project from the Run Configuration.
36 36  
37 -Suddenly, you will get messages about jrebel being loaded, and some extra information about what settings are available as extra arguments.
47 +Suddenly, you will get messages about jrebel being loaded, and some extra information about what settings are available as extra arguments.
38 38  
39 -{{info}}
40 -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:
49 +Start changing your java code on the fly: watch and start saving time.
41 41  
42 --XX:MaxPermSize=384m
43 -{{/info}}
51 +[[image:JRebelWOLipsLog.png]]
44 44  
45 -Start changing your java code on the fly: watch and start saving time.
46 -
47 -[[image:attach:JRebelWOLipsLog.png]]
48 -
49 49  * Profit! (for the europeans: Extra Time Off!)
50 -
51 -== More information ==
52 -
53 -[[Old screencast from David Avendasora about using JRebel with Eclipse 3.4>>url:http://www.wocommunity.org/podcasts/WOJavaRebel_Setup.mov||shape="rect"]].