package org.apache.lucene.queryParser.complexPhrase;
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* 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 java.util.HashSet;
import java.util.Random;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
public class TestComplexPhraseQuery extends LuceneTestCase {
Directory rd;
Analyzer analyzer = new MockAnalyzer();
DocData docsContent[] = { new DocData("john smith", "1"),
new DocData("johathon smith", "2"),
new DocData("john percival smith", "3"),
new DocData("jackson waits tom", "4") };
private IndexSearcher searcher;
String defaultFieldName = "name";
public void testComplexPhrases() throws Exception {
checkMatches("\"john smith\"", "1"); // Simple multi-term still works
checkMatches("\"j* smyth~\"", "1,2"); // wildcards and fuzzies are OK in
// phrases
checkMatches("\"(jo* -john) smith\"", "2"); // boolean logic works
checkMatches("\"jo* smith\"~2", "1,2,3"); // position logic works.
checkMatches("\"jo* [sma TO smZ]\" ", "1,2"); // range queries supported
checkMatches("\"john\"", "1,3"); // Simple single-term still works
checkMatches("\"(john OR johathon) smith\"", "1,2"); // boolean logic with
// brackets works.
checkMatches("\"(jo* -john) smyth~\"", "2"); // boolean logic with
// brackets works.
// checkMatches("\"john -percival\"", "1"); // not logic doesn't work
// currently :(.
checkMatches("\"john nosuchword*\"", ""); // phrases with clauses producing
// empty sets
checkBadQuery("\"jo* id:1 smith\""); // mixing fields in a phrase is bad
checkBadQuery("\"jo* \"smith\" \""); // phrases inside phrases is bad
}
private void checkBadQuery(String qString) {
QueryParser qp = new ComplexPhraseQueryParser(TEST_VERSION_CURRENT, defaultFieldName, analyzer);
Throwable expected = null;
try {
qp.parse(qString);
} catch (Throwable e) {
expected = e;
}
assertNotNull("Expected parse error in " + qString, expected);
}
private void checkMatches(String qString, String expectedVals)
throws Exception {
QueryParser qp = new ComplexPhraseQueryParser(TEST_VERSION_CURRENT, defaultFieldName, analyzer);
qp.setFuzzyPrefixLength(1); // usually a good idea
Query q = qp.parse(qString);
HashSet<String> expecteds = new HashSet<String>();
String[] vals = expectedVals.split(",");
for (int i = 0; i < vals.length; i++) {
if (vals[i].length() > 0)
expecteds.add(vals[i]);
}
TopDocs td = searcher.search(q, 10);
ScoreDoc[] sd = td.scoreDocs;
for (int i = 0; i < sd.length; i++) {
Document doc = searcher.doc(sd[i].doc);
String id = doc.get("id");
assertTrue(qString + "matched doc#" + id + " not expected", expecteds
.contains(id));
expecteds.remove(id);
}
assertEquals(qString + " missing some matches ", 0, expecteds.size());
}
@Override
protected void setUp() throws Exception {
super.setUp();
Random random = newRandom();
rd = newDirectory(random);
IndexWriter w = new IndexWriter(rd, newIndexWriterConfig(random, TEST_VERSION_CURRENT, analyzer));
for (int i = 0; i < docsContent.length; i++) {
Document doc = new Document();
doc.add(new Field("name", docsContent[i].name, Field.Store.YES,
Field.Index.ANALYZED));
doc.add(new Field("id", docsContent[i].id, Field.Store.YES,
Field.Index.ANALYZED));
w.addDocument(doc);
}
w.close();
searcher = new IndexSearcher(rd, true);
}
@Override
protected void tearDown() throws Exception {
searcher.close();
rd.close();
super.tearDown();
}
static class DocData {
String name;
String id;
public DocData(String name, String id) {
super();
this.name = name;
this.id = id;
}
}
}