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From "Richard Eckart de Castilho (JIRA)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-5115) uv3 select() api for iterators and streams over CAS contents
Date Wed, 21 Sep 2016 17:17:20 GMT

    [ https://issues.apache.org/jira/browse/UIMA-5115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15510558#comment-15510558
] 

Richard Eckart de Castilho commented on UIMA-5115:
--------------------------------------------------

The offsets of two FSes are the same iff (fs1.begin == fs2.begin && fs1.end == fs2.end).
If the end differs, offsets are not the same.

If there are multiple annotations of the same type at a given (offset) position, we need to
decide what to do. I think for the case of at, covering, and coveredBy, we already agreed
that we'd return all at the same position except the reference annotation.

For following and preceeding, it is a slightly different case. Is AnnoFS1 following/preceding
AnnoFS2 if they both have the same offset? At least if type priorities are disabled, I'd tend
towards saying no. That is the way how it is currently implemented in uimaFIT. selectFollowing
currently seeks forward in the index until it reaches the first annotation that starts at/after
the end of the reference annotation.

It *might* make sense to refine that a bit if type priorities are active... not sure.


> uv3 select() api for iterators and streams over CAS contents
> ------------------------------------------------------------
>
>                 Key: UIMA-5115
>                 URL: https://issues.apache.org/jira/browse/UIMA-5115
>             Project: UIMA
>          Issue Type: New Feature
>          Components: Core Java Framework
>            Reporter: Marshall Schor
>            Priority: Minor
>             Fix For: 3.0.0SDKexp
>
>
> Design and implement a select() API based on uimaFIT's select, integrated well with Java
8 concepts.  Initial discussions in UIMA-1524.  Wiki with diagram: https://cwiki.apache.org/confluence/display/UIMA/UV3+Iterator+support



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