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https://issues.apache.org/jira/browse/UIMA-125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12463588
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Adam Lally commented on UIMA-125:
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Eddie's the expert, but my understanding is that you CAN deserialize a v1.x
XCAS in v2.x, without having to do anything special. It should just work. I
think we even have test cases for that, there are some example v1 XCASes in
uimaj-core/src/test/resources/ExampleCas.
The problem for service compatibility is that v2 cannot *generate* v1-style
XCASes, and v1 of course can't read v2-style XCASes. So we have one-way
communication only.
> Apache UIMA client should be able to communicate with IBM UIMA (1.x or 2.0)
> service
> -----------------------------------------------------------------------------------
>
> Key: UIMA-125
> URL: https://issues.apache.org/jira/browse/UIMA-125
> Project: UIMA
> Issue Type: Improvement
> Components: Transport Adapters - SOAP, Vinci
> Reporter: Adam Lally
> Assigned To: Eddie Epstein
> Fix For: 2.1
>
>
> For ease of migration it is important that an application running Apache UIMA
> should be able to call services deployed under previous versions of UIMA.
> Previous discussions with Eddie have indicated this would be fairly
> straightforward for single-Sofa CASes, not necessarily for CASes containing
> multiple Sofas. Possibly support for single-Sofa CASes only is sufficient,
> as that would still help migration for the vast majority of UIMA users.
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