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From Tim Miller <>
Subject Re: Eclipse, Maven and JCasGen
Date Fri, 28 Sep 2012 17:22:19 GMT
I'm having trouble recreating the behavior.  You just have the trunk 
checked out and make a change in eclipse and it re-runs jcasgen? Anyone 
else seeing this before we try to fix it?

On 09/28/2012 11:58 AM, Steven Bethard wrote:
> Have any of you working on the new cTAKES trunk noticed JCasGen constantly running? I
have Eclipse set to "Build Automatically" and I'm constantly seeing tasks running in the background
in my Progress view that look like:
> Compiling ctakes-type-system/target/generated-sources/...
> Refreshing ctakes-type-system/target/generated-sources/...
> These tasks run, complete and then immediately start again, and as a result, my Eclipse
runs very slowly. Are other people experiencing this too?
> I think the solution is to create a real jcasgen-maven-plugin and a proper m2e connector
that only runs JCasGen when the type system has changed (or on project import, or if target/generated-sources/jcasgen
is missing, etc.).
> What do you all think? Does this approach sound okay? I have a working plugin and m2e
connector, but I didn't want to just commit the change because if I do, everyone will have
to install the m2e connector in their Eclipse environment. So I figured we should discuss
it first.
> Steve
> P.S. For anyone was experiencing the same problem, could you try out the following fix?
> (1) Apply the attached patch to cTAKES trunk, which uses the jcasgen-maven-plugin in
the pom.xml files instead of the exec-maven-plugin and build-helper-maven-plugin:
>      $ svn patch ctakes-jcasgen-maven-plugin.diff
> (2) Open Eclipse, and refresh your cTAKES checkout. You should see a bunch of errors
in the Problems view that look like "Project configuration is not up-to-date with pom.xml.
Run Maven->Update Project or use Quick Fix."
> (3) Update the Maven projects as suggested.
> (4) You should now see some new errors that look like: "Plugin execution not covered
by lifecycle configuration: org.cleartk:jcasgen-maven-plugin:0.9.0:generate (execution: default,
phase: generate-sources)"
> (5) Install the m2e connector for the jcasgen-maven-plugin. Go to Help -> Install
New Software…, add the update site
and install the "m2e connector for JCasGen Maven plugin". Eclipse will restart.
> (6) Update the Maven projects again, as in step (3). The errors should all be gone now.
> Some things to try to make sure the fix worked:
> (1) Check that  JCasGen is no longer be constantly running in the background. Go to the
Progress view and make sure that eventually you see just "No operations to display at this
> (2) Modify a few non-type-system files and and make sure (in the Progress view again)
that JCasGen does not run.
> (3) Modify a type system, and make sure that JCasGen *does* run. An easy way to check
this is to change an annotation or feature name and make sure you got some new compile errors.

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