[jira] Commented: (UIMA-351) UIMA pear runtime

["Michael Baessler (JIRA)" <ui...@incubator.apache.org>]

    [ https://issues.apache.org/jira/browse/UIMA-351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12482767 ] 

Michael Baessler commented on UIMA-351:
---------------------------------------

I added a first UIMA pear runtime implementation that use the old URISpecifier.



> UIMA pear runtime
> -----------------
>
>                 Key: UIMA-351
>                 URL: https://issues.apache.org/jira/browse/UIMA-351
>             Project: UIMA
>          Issue Type: New Feature
>          Components: Core Java Framework
>    Affects Versions: 2.1
>            Reporter: Michael Baessler
>         Assigned To: Michael Baessler
>             Fix For: 2.2
>
>
> Currently it is not possible to run an installed pear file out of the box in UIMA. I mean by just specifying the pear installation path or something similar.
> To run installed pear files there is a lot of user configuration and implementation necessary. So it would be nice to have a UIMA pear runtime that can run an installed pear file out of the box.
> With the suggestion of having custom resource specifiers <customResourceSpecifier> we can provide an easy way to integrate such a UIMA pear runtime.
> We just have to implement a new PearAnalysisEngineWrapper that extends the AnalysisEngineImplBase class that knows how to start an installed pear file. All the necessary information is available and can be parsed from the metadata of the installed pear. The utilities, e.g. to dynamically load the classes (UIMA extension class loader) is also in place and can be used. So an example of the <customResourceSpecifier> can look like:
> <customResourceSpecifier xmlns="http://uima.apache.org/resourceSpecifier">
>    <resourceClassName>org.apache.PearAnalyisEngineWrapper</resourceClassName>
>    <parameters>
>        <parameter name="installedPear" value="/path/to/the/root/directory/of/the/installed/pear/file"/>
>        <!-- and additional parameters if necessary -->
>    </parameters>
> </customResourceSpecifier>
> This solution will also work out of the box in our tooling. The tools does not have to implement a PEAR runtime engine itself.

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