opennlp.tools.formats.conllu.ConlluSentenceSampleStream 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.conllu;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import opennlp.tools.sentdetect.SentenceSample;
import opennlp.tools.util.FilterObjectStream;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.Span;
public class ConlluSentenceSampleStream extends FilterObjectStream {
private final int sentencesPerSample;
public ConlluSentenceSampleStream(ObjectStream samples, int sentencesPerSample) {
super(samples);
this.sentencesPerSample = sentencesPerSample;
}
@Override
public SentenceSample read() throws IOException {
StringBuilder documentText = new StringBuilder();
List sentenceSpans = new ArrayList<>();
ConlluSentence sentence;
for (int i = 0; i < sentencesPerSample && (sentence = samples.read()) != null; i++) {
int startIndex = documentText.length();
documentText.append(sentence.getTextComment()).append(' ');
sentenceSpans.add(new Span(startIndex, documentText.length() - 1));
}
if (documentText.length() > 0) {
documentText.setLength(documentText.length() - 1);
return new SentenceSample(documentText, sentenceSpans.toArray(new Span[sentenceSpans.size()]));
}
return null;
}
}