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Date: Fri, 12 Jul 2013 17:41:31 -0400
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Subject: Re: Getting all Features for any Annotator
From: Chuong Ngo <cngo.textanalytics@gmail.com>
To: Uima Users Mailing List <user@uima.apache.org>
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Alright, so if I understand correctly, what I need to do is something along
the following:

1)  Get the TypeSystem from the cas:
  TypeSystem typeSystem = cas.getTypeSystem

2)  Get an iterator and iterate over the TypeSystem:
  Iterator<Type> itr = ts.getTypeIterator();
  while(itr.hasNext()) {
    Type type = itr.next();
    ...

3)  For each type, retrieve the qualified name of the type and use it to
retrieve all annotations of that type.  Also grab the list of features for
the type:
    List<Feature> featureList = type.getFeatures();
    AnnotationIndex<AnnotationFS> indexAnn = cas.getAnnotationIndex(type);
    Iterator<AnnotationFS> itrAnn = indexAnn.iterator();
    while(itr.hasNext()) {
      FeatureStructure fs = (FeatureStructure) itrAnn.next();
      ...

4)  Iterate though the list of freatures extracted and pull out the feature
name and values:
     for(Feature feature : featureList) {
       String featureName = feature.getShortName();
       String featureValue = fs.getFeatureValueAsString(feature);
       ...


On Fri, Jul 12, 2013 at 2:58 PM, Richard Eckart de Castilho <
richard.eckart@gmail.com> wrote:

> People tend to fall back to using Java Reflections on the JCas wrappers,
> before using the lower-level UIMA interfaces (CAS and AnnotationFS/
> FeatureStructure).
>
> Every UIMA annotation implements the interface FeatureStructure. This
> interface in conjunction with the type system information you can obtain
> from the CAS, provides all you need to extract all information.
>
> There is no need to resort to reflection.
>
> You may want to have a look at the source code of the CasCopier class too.
>
> -- Richard
>
> Am 12.07.2013 um 20:16 schrieb Chuong Ngo <cngo.textanalytics@gmail.com>:
>
> > Is there a way to get all the features for an annotator, no matter which
> > one it is?
> >
> > For example, I want to convert all annotators I get back into a JSON
> > respresenting that annotator.  My annotators have different number and
> > types of features.  For example, a person may have firstName, lastName
> > while an organization may have type, health, etc...  Is there another way
> > to do that besides casting each one to a predetermined type and then
> using
> > the getters to extract the feature values?  Thanks in advance.
> >
> > Chuong Ngo
>
>

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