/*
* 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.lucene.benchmark.byTask.feeds;
import java.io.IOException;
import java.util.Date;
/**
* Parser for the FR94 docs in trec disks 4+5 collection format
*/
public class TrecFR94Parser extends TrecDocParser {
private static final String TEXT = "<TEXT>";
private static final int TEXT_LENGTH = TEXT.length();
private static final String TEXT_END = "</TEXT>";
private static final String DATE = "<DATE>";
private static final String[] DATE_NOISE_PREFIXES = {
"DATE:",
"date:", //TODO improve date extraction for this format
"t.c.",
};
private static final String DATE_END = "</DATE>";
//TODO can we also extract title for this format?
@Override
public DocData parse(DocData docData, String name, TrecContentSource trecSrc,
StringBuilder docBuf, ParsePathType pathType) throws IOException {
int mark = 0; // that much is skipped
// optionally skip some of the text, set date (no title?)
Date date = null;
int h1 = docBuf.indexOf(TEXT);
if (h1>=0) {
int h2 = docBuf.indexOf(TEXT_END,h1);
mark = h1+TEXT_LENGTH;
// date...
String dateStr = extract(docBuf, DATE, DATE_END, h2, DATE_NOISE_PREFIXES);
if (dateStr != null) {
dateStr = stripTags(dateStr,0).toString();
date = trecSrc.parseDate(dateStr.trim());
}
}
docData.clear();
docData.setName(name);
docData.setDate(date);
docData.setBody(stripTags(docBuf, mark).toString());
return docData;
}
}