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https://issues.apache.org/jira/browse/UIMA-510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12513727
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Marshall Schor commented on UIMA-510:
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Investigation shows that the EMF merge code was updated to handle Java 1.5 (and
later?) as of EMF 2.2, which corresponds to Eclipse 3.2. How serious a problem
is it if we have
Eclipse 3.2 as the minimum level of Eclipse we run with?
> JCasGen uses an older Java model for merging hand-coded code with generated
> code, which doesn't support Java beyond the 1.4 level.
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: UIMA-510
> URL: https://issues.apache.org/jira/browse/UIMA-510
> Project: UIMA
> Issue Type: Bug
> Components: Tools
> Affects Versions: 2.1, 2.2
> Reporter: Marshall Schor
>
> JCasGen has a "merge" functionality to merge user-written code in previous
> versions of the generated JCas cover classes, with regenerated versions of
> these cover classes, so as to preserve the user-written code (new code or
> modifications). The functionality is provided by EMF. EMF started issuing
> warning messages that the Java modelling package it uses, "JDOM", was not
> updated for Java versions beyond Java 1.4. Because of this, running JCasGen
> gives the following message in the Eclipse Error Log: Using the JDOM API when
> the source compatibility is not set to '1.4' or lower can cause unpredictable
> results.
> The fix is to see if our use of EMF for this can be modified to use JDT's AST
> APIs instead. For EMF itself, there is a property for the Facade Helper
> Class in the GenModel that can be switched to
> org.eclipse.emf.codegen.merge.java.facade.ast.ASTFacadeHelper - this might be
> where to start looking.
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