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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.duration;
 
 import java.util.List;
 
 
Preserve only those event-event relations whose both arguments have covering system event mentions.
 
 public class PreserveUMLSEventEventRelationsInGold extends JCasAnnotator_ImplBase {                                               
   
   public static final String GOLD_VIEW_NAME = "GoldView";
 
   @Override                                                                                                                  
   public void process(JCas jCasthrows AnalysisEngineProcessException {                                                     
     
     JCas goldView;                                                                                                           
     try {                                                                                                                    
       goldView = jCas.getView();                                                                               
     } catch (CASException e) {                                                                                               
       throw new AnalysisEngineProcessException(e);                                                                           
     }                                                                                                                                                                                                                                         
 
     JCas systemView;
     try {
       systemView = jCas.getView("_InitialView");
     } catch (CASException e) {
       throw new AnalysisEngineProcessException(e);
     }
     
     for(BinaryTextRelation relation : Lists.newArrayList(JCasUtil.select(goldViewBinaryTextRelation.class))) {            
       RelationArgument arg1 = relation.getArg1();                                                                             
       RelationArgument arg2 = relation.getArg2(); 
 
       String event2Text;
       String event1Text;
       if(arg1.getArgument() instanceof EventMention && arg2.getArgument() instanceof EventMention) {
         event1Text = arg1.getArgument().getCoveredText().toLowerCase();
         event2Text = arg2.getArgument().getCoveredText().toLowerCase();
       } else {
         // this is not an event-event relation
         continue;
       }
       
       List<EventMentioncoveringSystemEventMentions1 = JCasUtil.selectCovered(
           systemView
           EventMention.class
           arg1.getArgument().getBegin(), 
           arg1.getArgument().getEnd());
 
       List<EventMentioncoveringSystemEventMentions2 = JCasUtil.selectCovered(
           systemView
           EventMention.class
           arg2.getArgument().getBegin(), 
           arg2.getArgument().getEnd());
       
       if(coveringSystemEventMentions1.size() > 0 && coveringSystemEventMentions2.size() > 0) {
         // keep this relation instance
         ..println("keeping: " + event1Text + "-" + event2Text);
         continue;
       }
       
       ..println("removing: " + event1Text + "-" + event2Text);
       arg1.removeFromIndexes();                                                                                            
       arg2.removeFromIndexes();                                                                                            
       relation.removeFromIndexes();
     }
     
     for(EventMention mention : Lists.newArrayList(JCasUtil.select(goldViewEventMention.class))) {
       List<EventMentioncoveringSystemEventMentions = JCasUtil.selectCovered(
           systemView
           EventMention.class
          mention.getBegin(), 
          mention.getEnd());
      
      if(coveringSystemEventMentions.size() > 0) {
        // these are the kind we keep
        continue;
      } 
      
      mention.removeFromIndexes();
    }
  }                                                                                                                          
}                                                                                                                            
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