JCasGen uses an older Java model for merging hand-coded code with generated
code, which doesn't support Java beyond the 1.4 level.
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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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