/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package opennlp.uima.doccat;
import opennlp.uima.util.AnnotatorUtil;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.cas.CAS;
import org.apache.uima.cas.FSIndex;
import org.apache.uima.cas.Feature;
import org.apache.uima.cas.Type;
import org.apache.uima.cas.TypeSystem;
import org.apache.uima.cas.text.AnnotationFS;
/**
* OpenNLP Document Categorizer.
*
* Mandatory parameters:
*/
public class DocumentCategorizer extends AbstractDocumentCategorizer {
private Type mCategoryType;
private Feature mCategoryFeature;
public void typeSystemInit(TypeSystem typeSystem)
throws AnalysisEngineProcessException {
// get category type and feature (it a document propery, one object with a feature)
mCategoryType = AnnotatorUtil.getRequiredTypeParameter(getContext(), typeSystem,
"opennlp.uima.doccat.CategoryType");
// get feature name
mCategoryFeature = AnnotatorUtil.getRequiredFeatureParameter(getContext(), mCategoryType,
"opennlp.uima.doccat.CategoryFeature", CAS.TYPE_NAME_STRING);
}
@Override
protected void setBestCategory(CAS tcas, String bestCategory) {
FSIndex<AnnotationFS> categoryIndex = tcas.getAnnotationIndex(mCategoryType);
AnnotationFS categoryAnnotation = (AnnotationFS) (categoryIndex.size() > 0 ?
categoryIndex.iterator().next() : null);
if (categoryIndex.size() > 0) {
categoryAnnotation = (AnnotationFS) categoryIndex.iterator().next();
}
else {
categoryAnnotation = tcas.createAnnotation(mCategoryType, 0,
tcas.getDocumentText().length());
tcas.getIndexRepository().addFS(categoryAnnotation);
}
categoryAnnotation.setStringValue(mCategoryFeature, bestCategory);
}
}