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https://issues.apache.org/jira/browse/UIMA-6153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16987914#comment-16987914
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Marshall Schor commented on UIMA-6153:
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I am quite curious about the slowdown, and look forward (eagerly !) to learning
what's causing it.
In version 3 I would think there normally would be very little difference,
since the FeatureStructures are represented by actual JCasGen'd class objects.
So something unusual may be happening in your particular use case.
> select.covering should bind to AnnotationFS
> -------------------------------------------
>
> Key: UIMA-6153
> URL: https://issues.apache.org/jira/browse/UIMA-6153
> Project: UIMA
> Issue Type: Improvement
> Components: UIMA
> Affects Versions: 3.1.1SDK
> Reporter: Richard Eckart de Castilho
> Priority: Major
>
> The following code does not compile because select.covering() uses TOP
> instead of AnnotationFS as the generic type. Consequently, getBegin() and
> getEnd() are not available on the "s" used in the filter expressions. But
> since covering() only makes sense for annotations, binding the generic type
> to TOP doesn't seem to make much sense:
> {{return aCas.select(getType(aCas, Sentence.class)).covering(aBegin1,
> aBegin1)}}
> {{ .filter(s -> s.getBegin() <= aBegin1 && aBegin1 < s.getEnd())}}
> {{ .filter(s -> s.getBegin() <= aBegin2 && aBegin2 <
> s.getEnd()).findFirst()}}
> {{ .isPresent();}}
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