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https://issues.apache.org/jira/browse/UIMA-4062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267834#comment-14267834
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Peter Klügl commented on UIMA-4062:
-----------------------------------

Sorry, I haven't found much time for this right now. I added a short code 
fragment to ExternalWordListExpression/ExternalWordTableExpression. It uses two 
null args in the getStringValue method, but I don't think that this will cause 
problems since both are only used for smart stuff in matching rules, and the 
expressions here should only occur in declaration statements. (However, it's 
possible that I missed something). We could maybe enforce that the external 
implementation of the table/list performs these argument conversions...

> Plugable external resources on UIMA RUTA
> ----------------------------------------
>
>                 Key: UIMA-4062
>                 URL: https://issues.apache.org/jira/browse/UIMA-4062
>             Project: UIMA
>          Issue Type: Improvement
>          Components: ruta
>    Affects Versions: 2.2.1ruta
>            Reporter: Silvestre Losada
>            Assignee: Peter Klügl
>              Labels: enhancement, uima
>             Fix For: 2.2.2ruta
>
>
> Currently UIMA ruta has WORDLIST and WORDTABLE, it is a list or table of text 
> items that can used to detect occurrences. This is nice feature and very 
> powerfull, however there is no way to plug my own WORDLIST/WORDTABLE 
> implementation, for example WORDLIST that find matches in database table or 
> in  lucene index etc...
> I think that the WORDLIST/WORTABLE implementation can be defined as UIMA 
> external resource, in resources section, and then pass a reference to 
> WORDLIST/WORDTABLE in ruta script. The other option is to specify the class 
> that implements WORDLIST/WORDTABLE to RutaEnvionment and instantiate it in 
> ruta environment using Reflection.



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