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From "Daniel Truemper (JIRA)" <...@uima.apache.org>
Subject [jira] Commented: (UIMA-1793) jcasgen: load the descriptor from the classpath
Date Tue, 15 Jun 2010 09:53:24 GMT

    [ https://issues.apache.org/jira/browse/UIMA-1793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878912#action_12878912

Daniel Truemper commented on UIMA-1793:

This is another version of the patch using the "jar:" URL handler. Works for me and the Jg
unittests do not complain. But: I am unsure about the MalformedUrlException since it will
be reported as "fileNotFound". I'd have to dig deeper into the error handling at that particular
place in the code to add another custom error message. Any pointers to that?


> jcasgen: load the descriptor from the classpath
> -----------------------------------------------
>                 Key: UIMA-1793
>                 URL: https://issues.apache.org/jira/browse/UIMA-1793
>             Project: UIMA
>          Issue Type: Improvement
>          Components: Tools
>    Affects Versions: 2.2.2CE, 2.2.2AS, 2.2.2S, 2.1, 2.2, 2.2.1, 2.2.2
>            Reporter: Daniel Truemper
>            Priority: Critical
>             Fix For: 2.3.1
>         Attachments: uima-tools-jg2.patch, uimaj-tools-jg.patch
> Hi,
> I would like to propose a small patch to the Jg class (org.apache.uima.tools.jcasgen.Jg).
At the moment it is only possible to generate the source code for the typesystem when the
corresponding descriptor file is located somewhere on your disk. I have the use case, where
I want the typesystem descriptor to be contained inside a (company wide) jar. That means,
I need to load the typesystem descriptor from the classpath.
> The attached patch adds a little bit of extra info to the "-jcasgeninput" parameter ind
the "main1" method. If the value starts with "classpath:" the patch will try to look for everything
after "classpath:" with its ClassLoader. If the ClassLoader can find the resource and the
"outputDirectory" is not null, everything works. If the ClassLoader cannot find the resource,
the corresponding error is generated.
> If the "-jcasgeninput" parameter does not start with "classpath:" everything works as
before, only that the file is being converted to an URL instance that is given to the XMLInputSource
> What I am not sure about it the use of the "xmlSourceFileName" member variable and what
it should contain if the descriptor is loaded from the classpath. Actually I don't even know
what this variable does...
> I have not found any unittest for this class. So the code is tested with my maven mojo
and works as expected. If anyone can provide me with more info about how to test the Eclipse
plugin I could also test this, but I certainly need help there...
> Any comments? Best
> Daniel

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