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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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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package org.elasticsearch.search.slice;
import org.apache.lucene.analysis.core.KeywordAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StringField;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Collector;
import org.apache.lucene.search.LeafCollector;
import org.apache.lucene.search.Scorer;
import org.apache.lucene.search.QueryUtils;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.StringHelper;
import org.elasticsearch.common.UUIDs;
import org.elasticsearch.test.ESTestCase;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import static org.hamcrest.Matchers.equalTo;
public class TermsSliceQueryTests extends ESTestCase {
public void testBasics() {
TermsSliceQuery query1 =
new TermsSliceQuery("field1", 1, 10);
TermsSliceQuery query2 =
new TermsSliceQuery("field1", 1, 10);
TermsSliceQuery query3 =
new TermsSliceQuery("field2", 1, 10);
TermsSliceQuery query4 =
new TermsSliceQuery("field1", 2, 10);
QueryUtils.check(query1);
QueryUtils.checkEqual(query1, query2);
QueryUtils.checkUnequal(query1, query3);
QueryUtils.checkUnequal(query1, query4);
}
public void testSearch() throws Exception {
final int numDocs = randomIntBetween(100, 200);
final Directory dir = newDirectory();
final RandomIndexWriter w = new RandomIndexWriter(random(), dir, new KeywordAnalyzer());
int max = randomIntBetween(2, 10);
int[] sliceCounters = new int[max];
Set<String> keys = new HashSet<>();
for (int i = 0; i < numDocs; ++i) {
Document doc = new Document();
String uuid = UUIDs.base64UUID();
BytesRef br = new BytesRef(uuid);
int hashCode = StringHelper.murmurhash3_x86_32(br, TermsSliceQuery.SEED);
int id = Math.floorMod(hashCode, max);
sliceCounters[id] ++;
doc.add(new StringField("uuid", uuid, Field.Store.YES));
w.addDocument(doc);
keys.add(uuid);
}
final IndexReader reader = w.getReader();
final IndexSearcher searcher = newSearcher(reader);
for (int id = 0; id < max; id++) {
TermsSliceQuery query1 =
new TermsSliceQuery("uuid", id, max);
assertThat(searcher.count(query1), equalTo(sliceCounters[id]));
searcher.search(query1, new Collector() {
@Override
public LeafCollector getLeafCollector(LeafReaderContext context) throws IOException {
return new LeafCollector() {
@Override
public void setScorer(Scorer scorer) throws IOException {
}
@Override
public void collect(int doc) throws IOException {
Document d = context.reader().document(doc, Collections.singleton("uuid"));
String uuid = d.get("uuid");
assertThat(keys.contains(uuid), equalTo(true));
keys.remove(uuid);
}
};
}
@Override
public boolean needsScores() {
return false;
}
});
}
assertThat(keys.size(), equalTo(0));
w.close();
reader.close();
dir.close();
}
}