package org.apache.lucene.queryparser.classic;
/*
* 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.
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import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.MultiPhraseQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.util.LuceneTestCase;
import java.io.IOException;
import java.io.Reader;
public class TestMultiPhraseQueryParsing extends LuceneTestCase {
private static class TokenAndPos {
public final String token;
public final int pos;
public TokenAndPos(String token, int pos) {
this.token = token;
this.pos = pos;
}
}
private static class CannedAnalyzer extends Analyzer {
private final TokenAndPos[] tokens;
public CannedAnalyzer(TokenAndPos[] tokens) {
this.tokens = tokens;
}
@Override
public TokenStreamComponents createComponents(String fieldName, Reader reader) {
return new TokenStreamComponents(new CannedTokenizer(reader, tokens));
}
}
private static class CannedTokenizer extends Tokenizer {
private final TokenAndPos[] tokens;
private int upto = 0;
private int lastPos = 0;
private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
private final PositionIncrementAttribute posIncrAtt = addAttribute(PositionIncrementAttribute.class);
public CannedTokenizer(Reader reader, TokenAndPos[] tokens) {
super(reader);
this.tokens = tokens;
}
@Override
public final boolean incrementToken() {
clearAttributes();
if (upto < tokens.length) {
final TokenAndPos token = tokens[upto++];
termAtt.setEmpty();
termAtt.append(token.token);
posIncrAtt.setPositionIncrement(token.pos - lastPos);
lastPos = token.pos;
return true;
} else {
return false;
}
}
@Override
public void reset() throws IOException {
this.upto = 0;
this.lastPos = 0;
}
}
public void testMultiPhraseQueryParsing() throws Exception {
TokenAndPos[] INCR_0_QUERY_TOKENS_AND = new TokenAndPos[]{
new TokenAndPos("a", 0),
new TokenAndPos("1", 0),
new TokenAndPos("b", 1),
new TokenAndPos("1", 1),
new TokenAndPos("c", 2)
};
QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new CannedAnalyzer(INCR_0_QUERY_TOKENS_AND));
Query q = qp.parse("\"this text is acually ignored\"");
assertTrue("wrong query type!", q instanceof MultiPhraseQuery);
MultiPhraseQuery multiPhraseQuery = new MultiPhraseQuery();
multiPhraseQuery.add(new Term[]{ new Term("field", "a"), new Term("field", "1") }, -1);
multiPhraseQuery.add(new Term[]{ new Term("field", "b"), new Term("field", "1") }, 0);
multiPhraseQuery.add(new Term[]{ new Term("field", "c") }, 1);
assertEquals(multiPhraseQuery, q);
}
}