Controlling JRebel package scope

Question

I am trying to speed up execution of code being debugged with JRebel. In particular, I notice that framework code is slow. I am wondering whether I can tell JRebel to ignore certain packages, in much the same way that we can setup JProfiler to ignore certain packages and patterns.

Answer 1

You most definitely can.

• Use a system property (or add to jrebel.properties) meant just for that purpose. More information at JRebel agent properties.

  -Drebel.exclude_packages=PACKAGE1,PACKAGE2,...
  

• Specify the excluded packages in rebel.xml using Ant-styled patterns. More information at rebel.xml configuration.

  <?xml version="1.0" encoding="UTF-8"?>
  <application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.zeroturnaround.com" xsi:schemaLocation="http://www.zeroturnaround.com http://update.zeroturnaround.com/jrebel/rebel-2_1.xsd">
    <classpath>
      <dir name="/path/to/module/build/directory/root">
        <exclude name="com/yourapp/package1/internal/**"/>
      </dir>
    </classpath>
  </application>
  

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Both ways work similarly but since the second one enables to customize each module inividually it is generally preferred.