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https://issues.apache.org/jira/browse/UIMA-2758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13655312#comment-13655312
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Richard Eckart de Castilho commented on UIMA-2758:
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In initialize() not, but if you run a component based on CasAnnotator_ImplBase
there's at least the typeSystemInit() "event".
> TextMarker: Provide support for tree structures and parse trees in rule
> language
> --------------------------------------------------------------------------------
>
> Key: UIMA-2758
> URL: https://issues.apache.org/jira/browse/UIMA-2758
> Project: UIMA
> Issue Type: New Feature
> Components: ruta
> Reporter: Peter Klügl
> Assignee: Peter Klügl
>
> Manipulation of features which refer to annotations and matching on simple
> features is currently supported, but matching on the complex values of some
> feature is not. A first step can be something like (Type Person with feature
> "title" of type Annotation):
> Person.title;
> This rule matches on all annotations, which are values of features of
> annotations of the type Person.
> This new language element can also be used for syntactic sugar when checking
> primitive feature values:
> Person.begin=0 (A Person annotation, which starts a offset 0)
> This can only be a first step towards supporting tree structures. Maybe there
> is no way around something for explicitly and directly referring to certain
> annotations (which is not possible right now, but is done by using the type).
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