/**
* 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.ctakes.temporal.ae.feature.treekernel;
import java.util.ArrayList;
import java.util.List;
import org.apache.ctakes.constituency.parser.treekernel.TreeExtractor;
import org.apache.ctakes.constituency.parser.util.AnnotationTreeUtils;
import org.apache.ctakes.typesystem.type.syntax.TopTreebankNode;
import org.apache.ctakes.typesystem.type.textsem.EventMention;
import org.apache.ctakes.utils.tree.SimpleTree;
import org.apache.uima.jcas.JCas;
import org.apache.uima.jcas.tcas.Annotation;
import org.cleartk.classifier.Feature;
import org.cleartk.classifier.TreeFeature;
import org.cleartk.classifier.feature.extractor.CleartkExtractorException;
import org.cleartk.classifier.feature.extractor.simple.SimpleFeatureExtractor;
/**
* Given a focused annotation, get the whole sentence-level parse tree that cover this annotation.
* @author CH151862
*
*/
public class SyntaticSingleTreeExtractor implements SimpleFeatureExtractor {
public static final String FEAT_NAME = "TK_SingleT";
@Override
public List<Feature> extract(JCas view, Annotation focusAnnotation)
throws CleartkExtractorException {
List<Feature> features = new ArrayList<Feature>();
// first get the root and print it out...
TopTreebankNode root = AnnotationTreeUtils.getTreeCopy(view, AnnotationTreeUtils.getAnnotationTree(view, focusAnnotation));
if(root == null){
SimpleTree fakeTree = new SimpleTree("(S (NN null))");
features.add(new TreeFeature(FEAT_NAME, fakeTree.toString()));
return features;
}
String etype="";
String eventModality="";
if(focusAnnotation instanceof EventMention){
eventModality = ((EventMention)focusAnnotation).getEvent().getProperties().getContextualModality();
etype = "EVENT-"+eventModality;
AnnotationTreeUtils.insertAnnotationNode(view, root, focusAnnotation, etype);
}
SimpleTree tree = null;
tree = TreeExtractor.getSimpleClone(root);
TemporalPETExtractor.moveTimexDownToNP(tree);
features.add(new TreeFeature(FEAT_NAME, tree.toString()));
return features;
}
}