Marshall Schor created UIMA-5698:
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Summary: uv3 create type systems with JCas features merged in
Key: UIMA-5698
URL: https://issues.apache.org/jira/browse/UIMA-5698
Project: UIMA
Issue Type: Improvement
Components: Core Java Framework
Affects Versions: 3.0.0SDK-beta
Reporter: Marshall Schor
Assignee: Marshall Schor
Priority: Minor
Fix For: 3.0.0SDK
Some use cases involve setting up (over time) multiple CASs with similar but
not identical type systems, differing in the number of features the types have.
The use case for this also has JCas class definitions defining features. The
following currently fails:
# load type T with no features, load JCas for T with features f1, f2, f3. This
works correctly.
# Now load type T with features f1, f2, f3, using the same classloader that
loaded the JCas for T previously. This fails because the offsets for f1, f2,
f3 in the JCas were computed previously, and cannot be changed (because
existing instances of the JCas class for T would stop working).
Implement a fix for this that works by having the initial setup of the JCas
feature offsets be preceeded by a step which, prior to committing the type
system, loads the JCas classes and programmatically adds in to the type system
any features defined in the JCas but not in the Type system.
Include logging messages showing what's happening.
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