/*
* 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.muc;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import opennlp.tools.parser.AbstractBottomUpParser;
import opennlp.tools.parser.Parse;
import opennlp.tools.parser.Parser;
import opennlp.tools.util.FilterObjectStream;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.Span;
public class FullParseCorefEnhancerStream extends FilterObjectStream<RawCorefSample, RawCorefSample> {
private final Parser parser;
public FullParseCorefEnhancerStream(Parser parser, ObjectStream<RawCorefSample> samples) {
super(samples);
this.parser = parser;
}
static Parse createIncompleteParse(String tokens[]) {
// produce text
Span tokenSpans[] = new Span[tokens.length];
StringBuilder textBuilder = new StringBuilder();
for (int i = 0; i < tokens.length; i++) {
if (textBuilder.length() > 0) {
textBuilder.append(' ');
}
int startOffset = textBuilder.length();
textBuilder.append(tokens[i]);
tokenSpans[i] = new Span(startOffset, textBuilder.length());
}
String text = textBuilder.toString();
Parse p = new Parse(text, new Span(0, text.length()), AbstractBottomUpParser.INC_NODE, 0, 0);
for (int i = 0; i < tokenSpans.length; i++) {
Span tokenSpan = tokenSpans[i];
p.insert(new Parse(text, new Span(tokenSpan.getStart(), tokenSpan.getEnd()), AbstractBottomUpParser.TOK_NODE, 0, i));
}
return p;
}
public RawCorefSample read() throws IOException {
RawCorefSample sample = samples.read();
if (sample != null) {
List<Parse> enhancedParses = new ArrayList<Parse>();
List<String[]> sentences = sample.getTexts();
for (int i = 0; i < sentences.size(); i++) {
String sentence[] = sentences.get(i);
Parse incompleteParse = createIncompleteParse(sentence);
Parse p = parser.parse(incompleteParse);
// What to do when a parse cannot be found ?!
enhancedParses.add(p);
}
sample.setParses(enhancedParses);
return sample;
}
else {
return null;
}
}
}