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https://issues.apache.org/jira/browse/UIMA-5030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor resolved UIMA-5030.
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Resolution: Fixed
> 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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