package org.apache.lucene.search;
/**
* 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 org.apache.lucene.search.spans.*;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.queryParser.ParseException;
import junit.framework.TestCase;
import java.util.Random;
import java.util.BitSet;
/**
* Tests primative queries (ie: that rewrite to themselves) to
* insure they match the expected set of docs, and that the score of each
* match is equal to the value of the scores explanation.
*
* <p>
* The assumption is that if all of the "primative" queries work well,
* then anythingthat rewrites to a primative will work well also.
* </p>
*
* @see "Subclasses for actual tests"
*/
public class TestExplanations extends TestCase {
protected IndexSearcher searcher;
public static final String FIELD = "field";
public static final QueryParser qp =
new QueryParser(FIELD, new WhitespaceAnalyzer());
public void tearDown() throws Exception {
searcher.close();
}
public void setUp() throws Exception {
RAMDirectory directory = new RAMDirectory();
IndexWriter writer= new IndexWriter(directory, new WhitespaceAnalyzer(), true);
for (int i = 0; i < docFields.length; i++) {
Document doc = new Document();
doc.add(new Field(FIELD, docFields[i], Field.Store.NO, Field.Index.TOKENIZED));
writer.addDocument(doc);
}
writer.close();
searcher = new IndexSearcher(directory);
}
protected String[] docFields = {
"w1 w2 w3 w4 w5",
"w1 w3 w2 w3 zz",
"w1 xx w2 yy w3",
"w1 w3 xx w2 yy w3 zz"
};
public Query makeQuery(String queryText) throws ParseException {
return qp.parse(queryText);
}
public void qtest(String queryText, int[] expDocNrs) throws Exception {
qtest(makeQuery(queryText), expDocNrs);
}
public void qtest(Query q, int[] expDocNrs) throws Exception {
// check that the expDocNrs first, then check the explanations
CheckHits.checkHitCollector(q, FIELD, searcher, expDocNrs);
CheckHits.checkExplanations(q, FIELD, searcher);
}
/**
* Tests a query using qtest after wrapping it with both optB and reqB
* @see #qtest
* @see #reqB
* @see #optB
*/
public void bqtest(Query q, int[] expDocNrs) throws Exception {
qtest(reqB(q), expDocNrs);
qtest(optB(q), expDocNrs);
}
/**
* Tests a query using qtest after wrapping it with both optB and reqB
* @see #qtest
* @see #reqB
* @see #optB
*/
public void bqtest(String queryText, int[] expDocNrs) throws Exception {
bqtest(makeQuery(queryText), expDocNrs);
}
/** A filter that only lets the specified document numbers pass */
public static class ItemizedFilter extends Filter {
int[] docs;
public ItemizedFilter(int[] docs) {
this.docs = docs;
}
public BitSet bits(IndexReader r) {
BitSet b = new BitSet(r.maxDoc());
for (int i = 0; i < docs.length; i++) {
b.set(docs[i]);
}
return b;
}
}
/** helper for generating MultiPhraseQueries */
public static Term[] ta(String[] s) {
Term[] t = new Term[s.length];
for (int i = 0; i < s.length; i++) {
t[i] = new Term(FIELD, s[i]);
}
return t;
}
/** MACRO for SpanTermQuery */
public SpanTermQuery st(String s) {
return new SpanTermQuery(new Term(FIELD,s));
}
/** MACRO for SpanNotQuery */
public SpanNotQuery snot(SpanQuery i, SpanQuery e) {
return new SpanNotQuery(i,e);
}
/** MACRO for SpanOrQuery containing two SpanTerm queries */
public SpanOrQuery sor(String s, String e) {
return sor(st(s), st(e));
}
/** MACRO for SpanOrQuery containing two SpanQueries */
public SpanOrQuery sor(SpanQuery s, SpanQuery e) {
return new SpanOrQuery(new SpanQuery[] { s, e });
}
/** MACRO for SpanOrQuery containing three SpanTerm queries */
public SpanOrQuery sor(String s, String m, String e) {
return sor(st(s), st(m), st(e));
}
/** MACRO for SpanOrQuery containing two SpanQueries */
public SpanOrQuery sor(SpanQuery s, SpanQuery m, SpanQuery e) {
return new SpanOrQuery(new SpanQuery[] { s, m, e });
}
/** MACRO for SpanNearQuery containing two SpanTerm queries */
public SpanNearQuery snear(String s, String e, int slop, boolean inOrder) {
return snear(st(s), st(e), slop, inOrder);
}
/** MACRO for SpanNearQuery containing two SpanQueries */
public SpanNearQuery snear(SpanQuery s, SpanQuery e,
int slop, boolean inOrder) {
return new SpanNearQuery(new SpanQuery[] { s, e }, slop, inOrder);
}
/** MACRO for SpanNearQuery containing three SpanTerm queries */
public SpanNearQuery snear(String s, String m, String e,
int slop, boolean inOrder) {
return snear(st(s), st(m), st(e), slop, inOrder);
}
/** MACRO for SpanNearQuery containing three SpanQueries */
public SpanNearQuery snear(SpanQuery s, SpanQuery m, SpanQuery e,
int slop, boolean inOrder) {
return new SpanNearQuery(new SpanQuery[] { s, m, e }, slop, inOrder);
}
/** MACRO for SpanFirst(SpanTermQuery) */
public SpanFirstQuery sf(String s, int b) {
return new SpanFirstQuery(st(s), b);
}
/**
* MACRO: Wraps a Query in a BooleanQuery so that it is optional, along
* with a second prohibited clause which will never match anything
*/
public Query optB(String q) throws Exception {
return optB(makeQuery(q));
}
/**
* MACRO: Wraps a Query in a BooleanQuery so that it is optional, along
* with a second prohibited clause which will never match anything
*/
public Query optB(Query q) throws Exception {
BooleanQuery bq = new BooleanQuery(true);
bq.add(q, BooleanClause.Occur.SHOULD);
bq.add(new TermQuery(new Term("NEVER","MATCH")), BooleanClause.Occur.MUST_NOT);
return bq;
}
/**
* MACRO: Wraps a Query in a BooleanQuery so that it is required, along
* with a second optional clause which will match everything
*/
public Query reqB(String q) throws Exception {
return reqB(makeQuery(q));
}
/**
* MACRO: Wraps a Query in a BooleanQuery so that it is required, along
* with a second optional clause which will match everything
*/
public Query reqB(Query q) throws Exception {
BooleanQuery bq = new BooleanQuery(true);
bq.add(q, BooleanClause.Occur.MUST);
bq.add(new TermQuery(new Term(FIELD,"w1")), BooleanClause.Occur.SHOULD);
return bq;
}
/**
* Placeholder: JUnit freaks if you don't have one test ... making
* class abstract doesn't help
*/
public void testNoop() {
/* NOOP */
}
}
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