/*
* 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.
*/
package org.apache.lucene.search;
import java.io.IOException;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.document.StringField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.Fields;
import org.apache.lucene.index.FilterDirectoryReader;
import org.apache.lucene.index.FilterLeafReader;
import org.apache.lucene.index.LeafReader;
import org.apache.lucene.index.MultiReader;
import org.apache.lucene.index.NoMergePolicy;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.TermContext;
import org.apache.lucene.index.TermState;
import org.apache.lucene.index.Terms;
import org.apache.lucene.index.TermsEnum;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.IOUtils;
import org.apache.lucene.util.LuceneTestCase;
public class TestTermQuery extends LuceneTestCase {
public void testEquals() throws IOException {
QueryUtils.checkEqual(
new TermQuery(new Term("foo", "bar")),
new TermQuery(new Term("foo", "bar")));
QueryUtils.checkUnequal(
new TermQuery(new Term("foo", "bar")),
new TermQuery(new Term("foo", "baz")));
QueryUtils.checkEqual(
new TermQuery(new Term("foo", "bar")),
new TermQuery(new Term("foo", "bar"), TermContext.build(new MultiReader().getContext(), new Term("foo", "bar"))));
}
public void testCreateWeightDoesNotSeekIfScoresAreNotNeeded() throws IOException {
Directory dir = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), dir, newIndexWriterConfig().setMergePolicy(NoMergePolicy.INSTANCE));
// segment that contains the term
Document doc = new Document();
doc.add(new StringField("foo", "bar", Store.NO));
w.addDocument(doc);
w.getReader().close();
// segment that does not contain the term
doc = new Document();
doc.add(new StringField("foo", "baz", Store.NO));
w.addDocument(doc);
w.getReader().close();
// segment that does not contain the field
w.addDocument(new Document());
DirectoryReader reader = w.getReader();
FilterDirectoryReader noSeekReader = new NoSeekDirectoryReader(reader);
IndexSearcher noSeekSearcher = new IndexSearcher(noSeekReader);
Query query = new TermQuery(new Term("foo", "bar"));
AssertionError e = expectThrows(AssertionError.class,
() -> noSeekSearcher.createNormalizedWeight(query, true));
assertEquals("no seek", e.getMessage());
noSeekSearcher.createNormalizedWeight(query, false); // no exception
IndexSearcher searcher = new IndexSearcher(reader);
// use a collector rather than searcher.count() which would just read the
// doc freq instead of creating a scorer
TotalHitCountCollector collector = new TotalHitCountCollector();
searcher.search(query, collector);
assertEquals(1, collector.getTotalHits());
TermQuery queryWithContext = new TermQuery(new Term("foo", "bar"),
TermContext.build(reader.getContext(), new Term("foo", "bar")));
collector = new TotalHitCountCollector();
searcher.search(queryWithContext, collector);
assertEquals(1, collector.getTotalHits());
IOUtils.close(reader, w, dir);
}
private static class NoSeekDirectoryReader extends FilterDirectoryReader {
public NoSeekDirectoryReader(DirectoryReader in) throws IOException {
super(in, new SubReaderWrapper() {
@Override
public LeafReader wrap(LeafReader reader) {
return new NoSeekLeafReader(reader);
}
});
}
@Override
protected DirectoryReader doWrapDirectoryReader(DirectoryReader in) throws IOException {
return new NoSeekDirectoryReader(in);
}
@Override
public CacheHelper getReaderCacheHelper() {
return in.getReaderCacheHelper();
}
}
private static class NoSeekLeafReader extends FilterLeafReader {
public NoSeekLeafReader(LeafReader in) {
super(in);
}
@Override
public Fields fields() throws IOException {
return new FilterFields(super.fields()) {
@Override
public Terms terms(String field) throws IOException {
return new FilterTerms(super.terms(field)) {
@Override
public TermsEnum iterator() throws IOException {
return new FilterTermsEnum(super.iterator()) {
@Override
public SeekStatus seekCeil(BytesRef text) throws IOException {
throw new AssertionError("no seek");
}
@Override
public void seekExact(BytesRef term, TermState state) throws IOException {
throw new AssertionError("no seek");
}
@Override
public boolean seekExact(BytesRef text) throws IOException {
throw new AssertionError("no seek");
}
@Override
public void seekExact(long ord) throws IOException {
throw new AssertionError("no seek");
}
};
}
};
}
};
}
@Override
public CacheHelper getCoreCacheHelper() {
return in.getCoreCacheHelper();
}
@Override
public CacheHelper getReaderCacheHelper() {
return in.getReaderCacheHelper();
}
};
}