Marshall Schor created UIMA-5030:
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Summary: UV3 Pear Support
Key: UIMA-5030
URL: https://issues.apache.org/jira/browse/UIMA-5030
Project: UIMA
Issue Type: Sub-task
Components: Core Java Framework
Reporter: Marshall Schor
Assignee: Marshall Schor
Fix For: 3.0.0SDKexp
Pear support for UV3 is based on the concept of a variant of main Java Feature
Structure class, indicated by a bit in the _flags. The variant used for Pears
(called trampoline), when there is a different JCas cover class for a type (due
to the PEAR having a different classpath for loading these), the variant
instance is constructed like a normal one except for the flag setting and for
not having its own int/Object arrays for features; instead it shares those with
the base feature structure instance.
We use similar mechanisms as in V2 to manage this. To locate the trampoline we
use the same jcas hash map mechanism as in V2, and switch in and out various
instances of those maps as pear boundaries are crossed (same as in V2).
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