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how to programatically resolve .classpath entries [message #629491]

Tue, 28 September 2010 13:26

cam_neely

Messages: 1
Registered: September 2010

Junior Member

Hi,
I have not been able to get any results in prior searches, so I thought I'd post and see if someone could help.

We are trying to make our build dynamic so we don't have to hard-code dependent jars.

What we are trying to do is take advantage of the .classpath file to build a list of the jar dependencies of the project. But with the variables in that file, it becomes impossible without then hard-coding the variable value.

i.e. :

<classpathentry kind="var" path="SOME_EXTERNAL_LIB/some-jar.jar"/>

how to resolve SOME_EXTERNAL_LIB?

Is there a way to do this programatically by hooking into some Eclipse API class?

Thanks

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Re: how to programatically resolve .classpath entries [message #632474 is a reply to message #629491]

Wed, 13 October 2010 06:01

Walter Harley

Messages: 847
Registered: July 2009

Senior Member

cam_neely wrote:
> Hi,
> I have not been able to get any results in prior searches, so I thought
> I'd post and see if someone could help.
>
> We are trying to make our build dynamic so we don't have to hard-code
> dependent jars.
>
> What we are trying to do is take advantage of the .classpath file to
> build a list of the jar dependencies of the project. But with the
> variables in that file, it becomes impossible without then hard-coding
> the variable value.
>
> i.e. :
> <classpathentry kind="var" path="SOME_EXTERNAL_LIB/some-jar.jar"/>
>
> how to resolve SOME_EXTERNAL_LIB?
>
> Is there a way to do this programatically by hooking into some Eclipse
> API class?
>
> Thanks

You may want to look into Ivy or Maven to manage your dependencies.

But anyway, yes, the JDT exposes methods like IJavaProject.getClasspath() that
can do what you want. (Compare with getRawClasspath(), which does not resolve
the variables.)

Or, you can launch Eclipse itself, headless (no UI) to do your build.

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