| /* |
| * 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.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<RoomNumber> roomNumberIndex = aJCas.getAnnotationIndex(RoomNumber.class); |
| FSIndex<DateAnnot> dateIndex = aJCas.getAnnotationIndex(DateAnnot.class); |
| FSIndex<TimeAnnot> timeIndex = aJCas.getAnnotationIndex(TimeAnnot.class); |
| |
| // store end position of last meeting we identified, to prevent multiple |
| // annotations over same span |
| int lastMeetingEnd = -1; |
| |
| for (RoomNumber room : roomNumberIndex.select()) { |
| for (DateAnnot date : dateIndex.select()) { |
| for(TimeAnnot time1 : timeIndex.select()) { |
| for (TimeAnnot time2 : timeIndex.select()) { |
| |
| // 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 |
| minBegin > lastMeetingEnd) { |
| // annotate |
| Meeting mtg = new Meeting(aJCas, minBegin, maxEnd, room, date, time1, time2); |
| mtg.addToIndexes(); |
| lastMeetingEnd = maxEnd; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |