package org.apache.lucene.queries;
/*
* 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.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.SlowCompositeReaderWrapper;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.DocIdSet;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.TestUtil;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
public class TermFilterTest extends LuceneTestCase {
public void testCachability() throws Exception {
TermFilter a = termFilter("field1", "a");
HashSet<Filter> cachedFilters = new HashSet<>();
cachedFilters.add(a);
assertTrue("Must be cached", cachedFilters.contains(termFilter("field1", "a")));
assertFalse("Must not be cached", cachedFilters.contains(termFilter("field1", "b")));
assertFalse("Must not be cached", cachedFilters.contains(termFilter("field2", "a")));
}
public void testMissingTermAndField() throws Exception {
String fieldName = "field1";
Directory rd = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), rd);
Document doc = new Document();
doc.add(newStringField(fieldName, "value1", Field.Store.NO));
w.addDocument(doc);
IndexReader reader = SlowCompositeReaderWrapper.wrap(w.getReader());
assertTrue(reader.getContext() instanceof AtomicReaderContext);
AtomicReaderContext context = (AtomicReaderContext) reader.getContext();
w.close();
DocIdSet idSet = termFilter(fieldName, "value1").getDocIdSet(context, context.reader().getLiveDocs());
assertNotNull("must not be null", idSet);
DocIdSetIterator iter = idSet.iterator();
assertEquals(iter.nextDoc(), 0);
assertEquals(iter.nextDoc(), DocIdSetIterator.NO_MORE_DOCS);
idSet = termFilter(fieldName, "value2").getDocIdSet(context, context.reader().getLiveDocs());
assertNull("must be null", idSet);
idSet = termFilter("field2", "value1").getDocIdSet(context, context.reader().getLiveDocs());
assertNull("must be null", idSet);
reader.close();
rd.close();
}
public void testRandom() throws IOException {
Directory dir = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), dir);
int num = atLeast(100);
List<Term> terms = new ArrayList<>();
for (int i = 0; i < num; i++) {
String field = "field" + i;
String string = TestUtil.randomRealisticUnicodeString(random());
terms.add(new Term(field, string));
Document doc = new Document();
doc.add(newStringField(field, string, Field.Store.NO));
w.addDocument(doc);
}
IndexReader reader = w.getReader();
w.close();
IndexSearcher searcher = newSearcher(reader);
int numQueries = atLeast(10);
for (int i = 0; i < numQueries; i++) {
Term term = terms.get(random().nextInt(num));
TopDocs queryResult = searcher.search(new TermQuery(term), reader.maxDoc());
MatchAllDocsQuery matchAll = new MatchAllDocsQuery();
final TermFilter filter = termFilter(term);
TopDocs filterResult = searcher.search(matchAll, filter, reader.maxDoc());
assertEquals(filterResult.totalHits, queryResult.totalHits);
ScoreDoc[] scoreDocs = filterResult.scoreDocs;
for (int j = 0; j < scoreDocs.length; j++) {
assertEquals(scoreDocs[j].doc, queryResult.scoreDocs[j].doc);
}
}
reader.close();
dir.close();
}
public void testHashCodeAndEquals() {
int num = atLeast(100);
for (int i = 0; i < num; i++) {
String field1 = "field" + i;
String field2 = "field" + i + num;
String value1 = TestUtil.randomRealisticUnicodeString(random());
String value2 = value1 + "x"; // this must be not equal to value1
TermFilter filter1 = termFilter(field1, value1);
TermFilter filter2 = termFilter(field1, value2);
TermFilter filter3 = termFilter(field2, value1);
TermFilter filter4 = termFilter(field2, value2);
TermFilter[] filters = new TermFilter[]{filter1, filter2, filter3, filter4};
for (int j = 0; j < filters.length; j++) {
TermFilter termFilter = filters[j];
for (int k = 0; k < filters.length; k++) {
TermFilter otherTermFilter = filters[k];
if (j == k) {
assertEquals(termFilter, otherTermFilter);
assertEquals(termFilter.hashCode(), otherTermFilter.hashCode());
assertTrue(termFilter.equals(otherTermFilter));
} else {
assertFalse(termFilter.equals(otherTermFilter));
}
}
}
TermFilter filter5 = termFilter(field2, value2);
assertEquals(filter5, filter4);
assertEquals(filter5.hashCode(), filter4.hashCode());
assertTrue(filter5.equals(filter4));
assertEquals(filter5, filter4);
assertTrue(filter5.equals(filter4));
}
}
public void testNoTerms() {
try {
new TermFilter(null);
fail("must fail - no term!");
} catch (IllegalArgumentException e) {}
try {
new TermFilter(new Term(null));
fail("must fail - no field!");
} catch (IllegalArgumentException e) {}
}
public void testToString() {
TermFilter termsFilter = new TermFilter(new Term("field1", "a"));
assertEquals("field1:a", termsFilter.toString());
}
private TermFilter termFilter(String field, String value) {
return termFilter(new Term(field, value));
}
private TermFilter termFilter(Term term) {
return new TermFilter(term);
}
}