/*
* 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 opennlp.tools.sentdetect;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import opennlp.model.Event;
import opennlp.tools.util.AbstractEventStream;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.Span;
public class SDEventStream extends AbstractEventStream<SentenceSample> {
private SDContextGenerator cg;
private EndOfSentenceScanner scanner;
/**
* Initializes the current instance.
*
* @param samples
*/
public SDEventStream(ObjectStream<SentenceSample> samples, SDContextGenerator cg,
EndOfSentenceScanner scanner) {
super(samples);
this.cg = cg;
this.scanner = scanner;
}
@Override
protected Iterator<Event> createEvents(SentenceSample sample) {
Collection<Event> events = new ArrayList<Event>();
for (Span sentenceSpan : sample.getSentences()) {
String sentenceString = sentenceSpan.getCoveredText(sample.getDocument()).toString();
for (Iterator<Integer> it = scanner.getPositions(
sentenceString).iterator(); it.hasNext();) {
int candidate = it.next();
String type = SentenceDetectorME.NO_SPLIT;
if (!it.hasNext()) {
type = SentenceDetectorME.SPLIT;
}
events.add(new Event(type, cg.getContext(sample.getDocument(),
sentenceSpan.getStart() + candidate)));
}
}
return events.iterator();
}
}