[jira] Commented: (UIMA-1208) How to get the element type of a uima.cas.FSList feature

["Thilo Goetz (JIRA)" <ui...@incubator.apache.org>]

    [ https://issues.apache.org/jira/browse/UIMA-1208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12641303#action_12641303 ] 

Thilo Goetz commented on UIMA-1208:
-----------------------------------

Also see some email discussion here:
http://mail-archives.apache.org/mod_mbox/incubator-uima-user/200810.mbox/%3Cc650a5e70810171745i1870e1a3x18fec5a8386b2f30@mail.gmail.com%3E

> How to get the element type of a uima.cas.FSList feature
> --------------------------------------------------------
>
>                 Key: UIMA-1208
>                 URL: https://issues.apache.org/jira/browse/UIMA-1208
>             Project: UIMA
>          Issue Type: Bug
>          Components: Core Java Framework
>    Affects Versions: 2.2.2
>         Environment: Fedora 9
>            Reporter: Manuel Fiorelli
>            Priority: Minor
>
> The documentation 
> http://incubator.apache.org/uima/downloads/releaseDocs/2.2.2-incubating/docs/html/references/references.html#ugr.ref.xml.component_descriptor.type_system.features
> states that in the type system descriptor one may use <elementType> to constraint the type of elements in both array and list features.
> However, if one gets the type system of a CAS [myCas.getTypeSystem()],
> 1) if the feature range is an array, he can retrieve the element type through the method Type.getComponentType()
> 2) if the feature range is a list, there seems not to be any way to get the element type, since the method Type.getComponentType() returns null

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