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From Edward Johnson <ejohn...@coderyte.com>
Subject Re: Accessing type system features within perl
Date Fri, 04 Mar 2011 21:15:48 GMT
Thanks,  that helps a lot.

I ran across a message from 2006: http://www.ibm.com/developerworks/forums/thread.jspa?messageID=13856521
that in the comments suggests "there are Perl ties to make FSIterators look like arrays and
FeatureStructures look like hashes."  Is this feature still available?


Edward.


----- Original Message -----
> The argument for $annotation->getStringValue() is a Feature object.
> Presumably your type system has created a feature named
> "annotatorName" for some Type derived from uima.tcas.Annotation. To
> access that feature in Perl, first get a handle to that Feature object
> in the typeSystemInit method, something like:
> $main::annotnamefeat =
> $main::mytype->getFeatureByBaseName("annotatorName");
> where $main::mytype is the Type object for your custom type.
> 
> You can test this by modifying sample.pl, first in typeSystemInit:
> $main::keybeginfeat =
> $main::keywordtype->getFeatureByBaseName("begin");
> 
> then in in the loop at the bottom listing annotations created, add:
> print "(begin)= (", $anno->getIntValue($main::keybeginfeat),")\n";
> 
> Eddie
> 
> On Wed, Mar 2, 2011 at 12:08 PM, Edward Johnson
> <ejohnson@coderyte.com> wrote:
> > I am having difficulty getting/setting a types features from within
> > a perl annotator. I have tried a few things without success:
> >
> > print $annotation->getStringValue('annotatorName'),"\n";
> > TypeError in method 'FeatureStructure_getStringValue', argument 2 of
> > type 'Feature const &'
> >
> > print $annotation->getFSValue('annotatorName')\n";
> > TypeError in method 'FeatureStructure_getFSValue', argument 2 of
> > type 'Feature const &'
> >
> > print $annotation->{'annotatorName'}\n";
> > Can't locate auto/perltator/AnnotationFS/swig_annota.al in @INC
> > (@INC contains: ...) at perltator.pm line 33
> >
> > The first two messages suggest that I should be passing a Feature
> > object instead of a string, however, there doesn't appear to be a
> > way to set the Feature object's name.
> >
> > In the above examples, the type was created with an xml descriptor
> > and has a string feature named 'annotatorName'.
> >
> > Could someone tell me the correct way to do this?
> >
> > Thank you.
> >  Edward.
> >

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