Ted Leung on the air
Ted Leung on the air: Open Source, Java, Python, and ...
Ted Leung on the air: Open Source, Java, Python, and ...
Thu, 16 Jan 2003
I couldn't resist...
I hacked a proof-of-concept
to compute jar dependencies based on attributes in jar file manifests.
I'm not tackling the hard problems like versioning, or setting up a
distributed, mirrored, repository. I figure this is a good starting point that could get
refactored into a real solution. Or not.
It works like this. When jar files are created, place three new attrbutes in the manifest: jar-id: a string representing a unique id for this jar
jar-version: a string representing the version identifier for this jar
jar-dependencies: a comma separated list of jar-id#jar-version tuples which
specifies the jars that this jar directly depends on
If all jars embedded this information, then we just compute the set of dependencies needed by the application (root) jar, get those that we don't have, compute their dependencies, and repeat until we have all the jars.
[15:26] |
[computers/programming/java] |
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TB |
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It works like this. When jar files are created, place three new attrbutes in the manifest: jar-id: a string representing a unique id for this jar
jar-version: a string representing the version identifier for this jar
jar-dependencies: a comma separated list of jar-id#jar-version tuples which
specifies the jars that this jar directly depends on
If all jars embedded this information, then we just compute the set of dependencies needed by the application (root) jar, get those that we don't have, compute their dependencies, and repeat until we have all the jars.
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