[jira] [Created] (UIMA-5573) uv3 change JCas feature slot initialization to be more lazy

["Marshall Schor (JIRA)" <de...@uima.apache.org>]

Marshall Schor created UIMA-5573:
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             Summary: uv3 change JCas feature slot initialization to be more lazy
                 Key: UIMA-5573
                 URL: https://issues.apache.org/jira/browse/UIMA-5573
             Project: UIMA
          Issue Type: Improvement
          Components: Core Java Framework
    Affects Versions: 3.0.0SDK-alpha02
            Reporter: Marshall Schor
            Assignee: Marshall Schor
            Priority: Minor
             Fix For: 3.0.0SDK-beta


The current implementation of JCas classes requires that a type system associated with a JCas class be committed before the JCas class is loaded.  This causes some existing code to fail, because they're causing a JCas class to be loaded before the type system is committed (see UIMA-5554).  

The reason for this design in v3 was to enable the computation of the offsets for accessing features in feature structures to be done once and saved in static final int values, for efficiency. 
Find a new approach, which is as efficient, but is more lazy - allowing JCas classes to be loaded, and later a corresponding type system commit to be run.



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