/* | |
* 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 org.apache.uima.ruta.expression.string; | |
import java.util.Collection; | |
import java.util.List; | |
import org.apache.uima.cas.Feature; | |
import org.apache.uima.cas.FeatureStructure; | |
import org.apache.uima.cas.text.AnnotationFS; | |
import org.apache.uima.ruta.RutaStream; | |
import org.apache.uima.ruta.expression.feature.CoveredTextFeature; | |
import org.apache.uima.ruta.expression.feature.FeatureExpression; | |
import org.apache.uima.ruta.rule.MatchContext; | |
public class StringFeatureExpression extends AbstractStringExpression { | |
private FeatureExpression fe; | |
public StringFeatureExpression(FeatureExpression fe) { | |
super(); | |
this.fe = fe; | |
} | |
@Override | |
public String getStringValue(MatchContext context, RutaStream stream) { | |
AnnotationFS annotation = context.getAnnotation(); | |
Feature feature = fe.getFeature(context, stream); | |
List<AnnotationFS> list = getTargetAnnotation(annotation, fe, context, stream); | |
Collection<? extends FeatureStructure> featureStructures = fe.getFeatureStructures(list, false, context, stream); | |
if (!featureStructures.isEmpty()) { | |
FeatureStructure next = featureStructures.iterator().next(); | |
if (next instanceof AnnotationFS && feature instanceof CoveredTextFeature) { | |
return ((AnnotationFS) next).getCoveredText(); | |
} else { | |
return next.getStringValue(feature); | |
} | |
} | |
return null; | |
} | |
public FeatureExpression getFe() { | |
return fe; | |
} | |
public void setFe(FeatureExpression fe) { | |
this.fe = fe; | |
} | |
} |