package org.apache.lucene.queryParser;
/**
* 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.
*/
import java.io.IOException;
import java.io.Reader;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
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.search.BooleanClause;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
/**
* Tests QueryParser.
*/
public class TestMultiFieldQueryParser extends LuceneTestCase {
/** test stop words parsing for both the non static form, and for the
* corresponding static form (qtxt, fields[]). */
public void testStopwordsParsing() throws Exception {
assertStopQueryEquals("one", "b:one t:one");
assertStopQueryEquals("one stop", "b:one t:one");
assertStopQueryEquals("one (stop)", "b:one t:one");
assertStopQueryEquals("one ((stop))", "b:one t:one");
assertStopQueryEquals("stop", "");
assertStopQueryEquals("(stop)", "");
assertStopQueryEquals("((stop))", "");
}
// verify parsing of query using a stopping analyzer
private void assertStopQueryEquals (String qtxt, String expectedRes) throws Exception {
String[] fields = {"b", "t"};
Occur occur[] = {Occur.SHOULD, Occur.SHOULD};
TestQueryParser.QPTestAnalyzer a = new TestQueryParser.QPTestAnalyzer();
MultiFieldQueryParser mfqp = new MultiFieldQueryParser(TEST_VERSION_CURRENT, fields, a);
Query q = mfqp.parse(qtxt);
assertEquals(expectedRes, q.toString());
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, qtxt, fields, occur, a);
assertEquals(expectedRes, q.toString());
}
public void testSimple() throws Exception {
String[] fields = {"b", "t"};
MultiFieldQueryParser mfqp = new MultiFieldQueryParser(TEST_VERSION_CURRENT, fields, new MockAnalyzer());
Query q = mfqp.parse("one");
assertEquals("b:one t:one", q.toString());
q = mfqp.parse("one two");
assertEquals("(b:one t:one) (b:two t:two)", q.toString());
q = mfqp.parse("+one +two");
assertEquals("+(b:one t:one) +(b:two t:two)", q.toString());
q = mfqp.parse("+one -two -three");
assertEquals("+(b:one t:one) -(b:two t:two) -(b:three t:three)", q.toString());
q = mfqp.parse("one^2 two");
assertEquals("((b:one t:one)^2.0) (b:two t:two)", q.toString());
q = mfqp.parse("one~ two");
assertEquals("(b:one~0.5 t:one~0.5) (b:two t:two)", q.toString());
q = mfqp.parse("one~0.8 two^2");
assertEquals("(b:one~0.8 t:one~0.8) ((b:two t:two)^2.0)", q.toString());
q = mfqp.parse("one* two*");
assertEquals("(b:one* t:one*) (b:two* t:two*)", q.toString());
q = mfqp.parse("[a TO c] two");
assertEquals("(b:[a TO c] t:[a TO c]) (b:two t:two)", q.toString());
q = mfqp.parse("w?ldcard");
assertEquals("b:w?ldcard t:w?ldcard", q.toString());
q = mfqp.parse("\"foo bar\"");
assertEquals("b:\"foo bar\" t:\"foo bar\"", q.toString());
q = mfqp.parse("\"aa bb cc\" \"dd ee\"");
assertEquals("(b:\"aa bb cc\" t:\"aa bb cc\") (b:\"dd ee\" t:\"dd ee\")", q.toString());
q = mfqp.parse("\"foo bar\"~4");
assertEquals("b:\"foo bar\"~4 t:\"foo bar\"~4", q.toString());
// LUCENE-1213: MultiFieldQueryParser was ignoring slop when phrase had a field.
q = mfqp.parse("b:\"foo bar\"~4");
assertEquals("b:\"foo bar\"~4", q.toString());
// make sure that terms which have a field are not touched:
q = mfqp.parse("one f:two");
assertEquals("(b:one t:one) f:two", q.toString());
// AND mode:
mfqp.setDefaultOperator(QueryParser.AND_OPERATOR);
q = mfqp.parse("one two");
assertEquals("+(b:one t:one) +(b:two t:two)", q.toString());
q = mfqp.parse("\"aa bb cc\" \"dd ee\"");
assertEquals("+(b:\"aa bb cc\" t:\"aa bb cc\") +(b:\"dd ee\" t:\"dd ee\")", q.toString());
}
public void testBoostsSimple() throws Exception {
Map<String,Float> boosts = new HashMap<String,Float>();
boosts.put("b", Float.valueOf(5));
boosts.put("t", Float.valueOf(10));
String[] fields = {"b", "t"};
MultiFieldQueryParser mfqp = new MultiFieldQueryParser(TEST_VERSION_CURRENT, fields, new MockAnalyzer(), boosts);
//Check for simple
Query q = mfqp.parse("one");
assertEquals("b:one^5.0 t:one^10.0", q.toString());
//Check for AND
q = mfqp.parse("one AND two");
assertEquals("+(b:one^5.0 t:one^10.0) +(b:two^5.0 t:two^10.0)", q.toString());
//Check for OR
q = mfqp.parse("one OR two");
assertEquals("(b:one^5.0 t:one^10.0) (b:two^5.0 t:two^10.0)", q.toString());
//Check for AND and a field
q = mfqp.parse("one AND two AND foo:test");
assertEquals("+(b:one^5.0 t:one^10.0) +(b:two^5.0 t:two^10.0) +foo:test", q.toString());
q = mfqp.parse("one^3 AND two^4");
assertEquals("+((b:one^5.0 t:one^10.0)^3.0) +((b:two^5.0 t:two^10.0)^4.0)", q.toString());
}
public void testStaticMethod1() throws ParseException {
String[] fields = {"b", "t"};
String[] queries = {"one", "two"};
Query q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries, fields, new MockAnalyzer());
assertEquals("b:one t:two", q.toString());
String[] queries2 = {"+one", "+two"};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries2, fields, new MockAnalyzer());
assertEquals("(+b:one) (+t:two)", q.toString());
String[] queries3 = {"one", "+two"};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries3, fields, new MockAnalyzer());
assertEquals("b:one (+t:two)", q.toString());
String[] queries4 = {"one +more", "+two"};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries4, fields, new MockAnalyzer());
assertEquals("(b:one +b:more) (+t:two)", q.toString());
String[] queries5 = {"blah"};
try {
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries5, fields, new MockAnalyzer());
fail();
} catch(IllegalArgumentException e) {
// expected exception, array length differs
}
// check also with stop words for this static form (qtxts[], fields[]).
TestQueryParser.QPTestAnalyzer stopA = new TestQueryParser.QPTestAnalyzer();
String[] queries6 = {"((+stop))", "+((stop))"};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries6, fields, stopA);
assertEquals("", q.toString());
String[] queries7 = {"one ((+stop)) +more", "+((stop)) +two"};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries7, fields, stopA);
assertEquals("(b:one +b:more) (+t:two)", q.toString());
}
public void testStaticMethod2() throws ParseException {
String[] fields = {"b", "t"};
BooleanClause.Occur[] flags = {BooleanClause.Occur.MUST, BooleanClause.Occur.MUST_NOT};
Query q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, "one", fields, flags, new MockAnalyzer());
assertEquals("+b:one -t:one", q.toString());
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, "one two", fields, flags, new MockAnalyzer());
assertEquals("+(b:one b:two) -(t:one t:two)", q.toString());
try {
BooleanClause.Occur[] flags2 = {BooleanClause.Occur.MUST};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, "blah", fields, flags2, new MockAnalyzer());
fail();
} catch(IllegalArgumentException e) {
// expected exception, array length differs
}
}
public void testStaticMethod2Old() throws ParseException {
String[] fields = {"b", "t"};
//int[] flags = {MultiFieldQueryParser.REQUIRED_FIELD, MultiFieldQueryParser.PROHIBITED_FIELD};
BooleanClause.Occur[] flags = {BooleanClause.Occur.MUST, BooleanClause.Occur.MUST_NOT};
Query q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, "one", fields, flags, new MockAnalyzer());//, fields, flags, new MockAnalyzer());
assertEquals("+b:one -t:one", q.toString());
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, "one two", fields, flags, new MockAnalyzer());
assertEquals("+(b:one b:two) -(t:one t:two)", q.toString());
try {
BooleanClause.Occur[] flags2 = {BooleanClause.Occur.MUST};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, "blah", fields, flags2, new MockAnalyzer());
fail();
} catch(IllegalArgumentException e) {
// expected exception, array length differs
}
}
public void testStaticMethod3() throws ParseException {
String[] queries = {"one", "two", "three"};
String[] fields = {"f1", "f2", "f3"};
BooleanClause.Occur[] flags = {BooleanClause.Occur.MUST,
BooleanClause.Occur.MUST_NOT, BooleanClause.Occur.SHOULD};
Query q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries, fields, flags, new MockAnalyzer());
assertEquals("+f1:one -f2:two f3:three", q.toString());
try {
BooleanClause.Occur[] flags2 = {BooleanClause.Occur.MUST};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries, fields, flags2, new MockAnalyzer());
fail();
} catch(IllegalArgumentException e) {
// expected exception, array length differs
}
}
public void testStaticMethod3Old() throws ParseException {
String[] queries = {"one", "two"};
String[] fields = {"b", "t"};
BooleanClause.Occur[] flags = {BooleanClause.Occur.MUST, BooleanClause.Occur.MUST_NOT};
Query q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries, fields, flags, new MockAnalyzer());
assertEquals("+b:one -t:two", q.toString());
try {
BooleanClause.Occur[] flags2 = {BooleanClause.Occur.MUST};
q = MultiFieldQueryParser.parse(TEST_VERSION_CURRENT, queries, fields, flags2, new MockAnalyzer());
fail();
} catch(IllegalArgumentException e) {
// expected exception, array length differs
}
}
public void testAnalyzerReturningNull() throws ParseException {
String[] fields = new String[] { "f1", "f2", "f3" };
MultiFieldQueryParser parser = new MultiFieldQueryParser(TEST_VERSION_CURRENT, fields, new AnalyzerReturningNull());
Query q = parser.parse("bla AND blo");
assertEquals("+(f2:bla f3:bla) +(f2:blo f3:blo)", q.toString());
// the following queries are not affected as their terms are not analyzed anyway:
q = parser.parse("bla*");
assertEquals("f1:bla* f2:bla* f3:bla*", q.toString());
q = parser.parse("bla~");
assertEquals("f1:bla~0.5 f2:bla~0.5 f3:bla~0.5", q.toString());
q = parser.parse("[a TO c]");
assertEquals("f1:[a TO c] f2:[a TO c] f3:[a TO c]", q.toString());
}
public void testStopWordSearching() throws Exception {
Analyzer analyzer = new MockAnalyzer();
Random random = newRandom();
Directory ramDir = newDirectory(random);
IndexWriter iw = new IndexWriter(ramDir, newIndexWriterConfig(random, TEST_VERSION_CURRENT, analyzer));
Document doc = new Document();
doc.add(new Field("body", "blah the footest blah", Field.Store.NO, Field.Index.ANALYZED));
iw.addDocument(doc);
iw.close();
MultiFieldQueryParser mfqp =
new MultiFieldQueryParser(TEST_VERSION_CURRENT, new String[] {"body"}, analyzer);
mfqp.setDefaultOperator(QueryParser.Operator.AND);
Query q = mfqp.parse("the footest");
IndexSearcher is = new IndexSearcher(ramDir, true);
ScoreDoc[] hits = is.search(q, null, 1000).scoreDocs;
assertEquals(1, hits.length);
is.close();
ramDir.close();
}
/**
* Return empty tokens for field "f1".
*/
private static class AnalyzerReturningNull extends Analyzer {
MockAnalyzer stdAnalyzer = new MockAnalyzer();
public AnalyzerReturningNull() {
}
@Override
public TokenStream tokenStream(String fieldName, Reader reader) {
if ("f1".equals(fieldName)) {
return new EmptyTokenStream();
} else {
return stdAnalyzer.tokenStream(fieldName, reader);
}
}
private static class EmptyTokenStream extends TokenStream {
@Override
public boolean incrementToken() throws IOException {
return false;
}
}
}
}