opennlp.tools.formats.irishsentencebank.IrishSentenceBankSentenceStream Maven / Gradle / Ivy
/*
* 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.formats.irishsentencebank;
import java.io.IOException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import opennlp.tools.sentdetect.SentenceSample;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.Span;
class IrishSentenceBankSentenceStream implements ObjectStream {
private final IrishSentenceBankDocument source;
private Iterator sentenceIt;
IrishSentenceBankSentenceStream(IrishSentenceBankDocument source) {
this.source = source;
reset();
}
@Override
public SentenceSample read() throws IOException {
StringBuilder sentencesString = new StringBuilder();
List sentenceSpans = new LinkedList<>();
while (sentenceIt.hasNext()) {
IrishSentenceBankDocument.IrishSentenceBankSentence sentence = sentenceIt.next();
int begin = sentencesString.length();
if (sentence.getOriginal() != null) {
sentencesString.append(sentence.getOriginal());
}
sentenceSpans.add(new Span(begin, sentencesString.length()));
sentencesString.append(' ');
}
// end of stream is reached, indicate that with null return value
if (sentenceSpans.size() == 0) {
return null;
}
return new SentenceSample(sentencesString.toString(),
sentenceSpans.toArray(new Span[sentenceSpans.size()]));
}
@Override
public void reset() {
sentenceIt = source.getSentences().iterator();
}
}