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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*/
package org.apache.uima.tutorial.ex4;
import java.util.Iterator;
import org.apache.uima.UimaContext;
import org.apache.uima.analysis_component.AnalysisComponent;
import org.apache.uima.analysis_component.JCasAnnotator_ImplBase;
import org.apache.uima.cas.FSIndex;
import org.apache.uima.jcas.JCas;
import org.apache.uima.resource.ResourceInitializationException;
import org.apache.uima.tutorial.DateAnnot;
import org.apache.uima.tutorial.Meeting;
import org.apache.uima.tutorial.RoomNumber;
import org.apache.uima.tutorial.TimeAnnot;
/**
* Example annotator that detects meetings from the co-occurrence of a RoomNumber, a Date, and two
* Times (start and end), within a specified "window" size.
*/
public class MeetingAnnotator extends JCasAnnotator_ImplBase {
/**
* Size in characters of window within which a RoomNumber, a Date, and two Times must occur in
* order for a meeting annotation to be created.
*/
private int mWindowSize;
/**
* @see AnalysisComponent#initialize(UimaContext)
*/
public void initialize(UimaContext aContext) throws ResourceInitializationException {
super.initialize(aContext);
// Get config. parameter value
mWindowSize = ((Integer) aContext.getConfigParameterValue("WindowSize")).intValue();
}
/**
* @see JCasAnnotator_ImplBase#process(JCas)
*/
public void process(JCas aJCas) {
// get annotation indexes
FSIndex roomNumberIndex = aJCas.getAnnotationIndex(RoomNumber.type);
FSIndex dateIndex = aJCas.getAnnotationIndex(DateAnnot.type);
FSIndex timeIndex = aJCas.getAnnotationIndex(TimeAnnot.type);
// store end position of last meeting we identified, to prevent multiple
// annotations over same span
int lastMeetingEnd = -1;
// iterate over all combinations
Iterator roomNumberIter = roomNumberIndex.iterator();
while (roomNumberIter.hasNext()) {
RoomNumber room = (RoomNumber) roomNumberIter.next();
Iterator dateIter = dateIndex.iterator();
while (dateIter.hasNext()) {
DateAnnot date = (DateAnnot) dateIter.next();
Iterator time1Iter = timeIndex.iterator();
while (time1Iter.hasNext()) {
TimeAnnot time1 = (TimeAnnot) time1Iter.next();
Iterator time2Iter = timeIndex.iterator();
while (time2Iter.hasNext()) {
TimeAnnot time2 = (TimeAnnot) time2Iter.next();
// times must be different annotations
if (time1 != time2) {
// compute the begin and end of the span
int minBegin = Math.min(Math.min(time1.getBegin(), time2.getBegin()), Math.min(date
.getBegin(), room.getBegin()));
int maxEnd = Math.max(Math.max(time1.getEnd(), time2.getEnd()), Math.max(date
.getEnd(), room.getEnd()));
// span must be smaller than the window size?
if (maxEnd - minBegin < mWindowSize) {
// span must not overlap the last annotation we made
if (minBegin > lastMeetingEnd) {
// annotate
Meeting mtg = new Meeting(aJCas, minBegin, maxEnd, room, date, time1, time2);
mtg.addToIndexes();
lastMeetingEnd = maxEnd;
}
}
}
}
}
}
}
}
}