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https://issues.apache.org/jira/browse/UIMA-1524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15484827#comment-15484827
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Marshall Schor commented on UIMA-1524:
--------------------------------------
We could overlay the additional capabilities of Annotation Indexes on the
stream APIs, via a few extra methods, something like this:
{code}
int filteredTextSum = index.stream() //create a stream from an index
.reverse()
.boundedBy(boundingAnnotation) // like subiterator
.boundsRespectTypePriorities(true) // default is false
.strict(true) // default is false; same as nonOverlappingFSs(true)
.mapToInt(f -> f.getEnd() - f.getBegin()) // get the length of the
covered text
.sum(); // add all of these</code>
{code}
Things like reverse() and boundedBy() are not normal stream operators, of
course.
> JFSIndexRepository should be enhanced with new generic methods
> --------------------------------------------------------------
>
> Key: UIMA-1524
> URL: https://issues.apache.org/jira/browse/UIMA-1524
> Project: UIMA
> Issue Type: Improvement
> Components: Core Java Framework
> Affects Versions: 2.3
> Reporter: Joern Kottmann
>
> Existing methods should be overloaded with an additional Class argument to
> specify the exact return type. This changes make down casting of returned
> objects unnecessary.
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