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From "Marshall Schor (JIRA)" <...@uima.apache.org>
Subject [jira] [Closed] (UIMA-4687) UV3 improve JCas feature id use for index corruption checking and journaling
Date Tue, 06 Dec 2016 15:18:58 GMT

     [ https://issues.apache.org/jira/browse/UIMA-4687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Marshall Schor closed UIMA-4687.
    Resolution: Fixed

> UV3 improve JCas feature id use for index corruption checking and journaling
> ----------------------------------------------------------------------------
>                 Key: UIMA-4687
>                 URL: https://issues.apache.org/jira/browse/UIMA-4687
>             Project: UIMA
>          Issue Type: Sub-task
>          Components: Core Java Framework
>            Reporter: Marshall Schor
>            Assignee: Marshall Schor
>            Priority: Minor
>             Fix For: 3.0.0SDKexp
> When setting (changing) values for features, sometimes index corruption checking needs
to be done, and sometimes changes need to be journaled.  Both of these need to identify the
feature involved.  This operation should be fast and memory-cache-friendly (e.g. not involve
following a long chain of dereferencings).  
> Add static final fields that represent features used by a particular JCas class, which
have names derived from the short-feature-name, and won't collide with other names, and set
these using the same JCasRegistry mechanism to unique values within a class loader.  This
allows the same JCas cover classes to be used with different type systems.  
> Change the corruption testing logic to use BitSets and have a version which uses these
indexes as well as one which uses the FeatureImpl featureCode.  Keep one extra table mapping
these codes to FeatureImpls, per type system. 

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