Package org.apache.ctakes.temporal.ae

Source Code of org.apache.ctakes.temporal.ae.ClearTKDocTimeRelAnnotator

/**
* 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;

import java.util.Map;

import org.apache.ctakes.typesystem.type.textsem.EventMention;
import org.apache.uima.analysis_engine.AnalysisEngineDescription;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.jcas.JCas;
import org.apache.uima.resource.ResourceInitializationException;
import org.cleartk.timeml.type.Anchor;
import org.cleartk.timeml.type.DocumentCreationTime;
import org.cleartk.timeml.type.TemporalLink;
import org.uimafit.component.JCasAnnotator_ImplBase;
import org.uimafit.factory.AnalysisEngineFactory;
import org.uimafit.util.JCasUtil;

import com.google.common.collect.Maps;

/**
* for every cTAKES EventMention annotation, create a ClearTK Event Annotation
*
* @author Chen Lin
*
*/
public class ClearTKDocTimeRelAnnotator extends JCasAnnotator_ImplBase {

  public ClearTKDocTimeRelAnnotator() {
    // TODO Auto-generated constructor stub
  }

  @Override
  public void process(JCas jCas) throws AnalysisEngineProcessException {
    DocumentCreationTime dct = JCasUtil.selectSingle(jCas, DocumentCreationTime.class);
    Map<EventMention, String> docTimeRels = Maps.newHashMap();
    for (TemporalLink tlink : JCasUtil.select(jCas, TemporalLink.class)) {
      Anchor source = tlink.getSource();
      Anchor target = tlink.getTarget();
      if (source instanceof org.cleartk.timeml.type.Event && target.equals(dct)) {
        for (EventMention event : JCasUtil.selectCovered(jCas, EventMention.class, source)) {
          docTimeRels.put(event, tlink.getRelationType());
        }
      }
    }

    for (EventMention eventMention : JCasUtil.select(jCas, EventMention.class)) {
      // needed because SignSymptomMention, etc. do not have EventProperties
      if (eventMention.getClass().equals(EventMention.class)) {
        String docTimeRel = docTimeRels.get(eventMention);
       
        // convert missing or INCLUDES to OVERLAP
        if (docTimeRel == null || "INCLUDES".equals(docTimeRel)) {
          docTimeRel = "OVERLAP";
        }
        eventMention.getEvent().getProperties().setDocTimeRel(docTimeRel);
      }
    }
  }

  public static AnalysisEngineDescription getAnnotatorDescription()
      throws ResourceInitializationException {
    return AnalysisEngineFactory.createPrimitiveDescription(ClearTKDocTimeRelAnnotator.class);
  }

}
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