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https://issues.apache.org/jira/browse/UIMA-4666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor updated UIMA-4666:
---------------------------------
    Description: 
Changes to JCasGen approach.

Allow users an easy migration from existing JCasGen classes
  - a reporting tool that identifies existing JCas gen classes being used
  - tooling support for setting up "merged" JCasGen class definitions from 
multiple sources
    -- Goal: support PEARs having different (but mergable) JCasGen definitions

Internal: only one class per type - the xxx_type class is removed in UV3
  - document migration path for users previously using xxx_type capabilities 
for low-level CAS operation

Document use-cases for JCasGen customization and changes possible due to new 
support for JavaObjects as data in Features.

Document the use-cases supported, including
  - A single set of JCasGen classes used for different type systems
  - External semi-manual merging of JCasGen classes from PEARs and their
    containers
  - Continuing to have JCasGen optional

  was:
Changes to JCasGen approach.

Document the use-cases supported, including
  - A single set of JCasGen classes used for different type systems
  - External semi-manual merging of JCasGen classes from PEARs and their
    containers
  - Continuing to have JCasGen optional


> UV3 JCasGen
> -----------
>
>                 Key: UIMA-4666
>                 URL: https://issues.apache.org/jira/browse/UIMA-4666
>             Project: UIMA
>          Issue Type: Story
>            Reporter: Marshall Schor
>
> Changes to JCasGen approach.
> Allow users an easy migration from existing JCasGen classes
>   - a reporting tool that identifies existing JCas gen classes being used
>   - tooling support for setting up "merged" JCasGen class definitions from 
> multiple sources
>     -- Goal: support PEARs having different (but mergable) JCasGen definitions
> Internal: only one class per type - the xxx_type class is removed in UV3
>   - document migration path for users previously using xxx_type capabilities 
> for low-level CAS operation
> Document use-cases for JCasGen customization and changes possible due to new 
> support for JavaObjects as data in Features.
> Document the use-cases supported, including
>   - A single set of JCasGen classes used for different type systems
>   - External semi-manual merging of JCasGen classes from PEARs and their
>     containers
>   - Continuing to have JCasGen optional



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