package org.apache.lucene.search.grouping;
/*
* 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.
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import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.*;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.FieldInfo.DocValuesType;
import org.apache.lucene.queries.function.ValueSource;
import org.apache.lucene.queries.function.valuesource.BytesRefFieldSource;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.grouping.function.FunctionAllGroupsCollector;
import org.apache.lucene.search.grouping.term.TermAllGroupsCollector;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.LuceneTestCase;
import java.util.HashMap;
public class AllGroupsCollectorTest extends LuceneTestCase {
public void testTotalGroupCount() throws Exception {
final String groupField = "author";
FieldType customType = new FieldType();
customType.setStored(true);
Directory dir = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(
random(),
dir,
newIndexWriterConfig(TEST_VERSION_CURRENT,
new MockAnalyzer(random())).setMergePolicy(newLogMergePolicy()));
boolean canUseIDV = !"Lucene3x".equals(w.w.getConfig().getCodec().getName());
// 0
Document doc = new Document();
addGroupField(doc, groupField, "author1", canUseIDV);
doc.add(new TextField("content", "random text", Field.Store.YES));
doc.add(new Field("id", "1", customType));
w.addDocument(doc);
// 1
doc = new Document();
addGroupField(doc, groupField, "author1", canUseIDV);
doc.add(new TextField("content", "some more random text blob", Field.Store.YES));
doc.add(new Field("id", "2", customType));
w.addDocument(doc);
// 2
doc = new Document();
addGroupField(doc, groupField, "author1", canUseIDV);
doc.add(new TextField("content", "some more random textual data", Field.Store.YES));
doc.add(new Field("id", "3", customType));
w.addDocument(doc);
w.commit(); // To ensure a second segment
// 3
doc = new Document();
addGroupField(doc, groupField, "author2", canUseIDV);
doc.add(new TextField("content", "some random text", Field.Store.YES));
doc.add(new Field("id", "4", customType));
w.addDocument(doc);
// 4
doc = new Document();
addGroupField(doc, groupField, "author3", canUseIDV);
doc.add(new TextField("content", "some more random text", Field.Store.YES));
doc.add(new Field("id", "5", customType));
w.addDocument(doc);
// 5
doc = new Document();
addGroupField(doc, groupField, "author3", canUseIDV);
doc.add(new TextField("content", "random blob", Field.Store.YES));
doc.add(new Field("id", "6", customType));
w.addDocument(doc);
// 6 -- no author field
doc = new Document();
doc.add(new TextField("content", "random word stuck in alot of other text", Field.Store.YES));
doc.add(new Field("id", "6", customType));
w.addDocument(doc);
IndexSearcher indexSearcher = newSearcher(w.getReader());
w.close();
AbstractAllGroupsCollector<?> allGroupsCollector = createRandomCollector(groupField, canUseIDV);
indexSearcher.search(new TermQuery(new Term("content", "random")), allGroupsCollector);
assertEquals(4, allGroupsCollector.getGroupCount());
allGroupsCollector = createRandomCollector(groupField, canUseIDV);
indexSearcher.search(new TermQuery(new Term("content", "some")), allGroupsCollector);
assertEquals(3, allGroupsCollector.getGroupCount());
allGroupsCollector = createRandomCollector(groupField, canUseIDV);
indexSearcher.search(new TermQuery(new Term("content", "blob")), allGroupsCollector);
assertEquals(2, allGroupsCollector.getGroupCount());
indexSearcher.getIndexReader().close();
dir.close();
}
private void addGroupField(Document doc, String groupField, String value, boolean canUseIDV) {
doc.add(new TextField(groupField, value, Field.Store.YES));
if (canUseIDV) {
doc.add(new SortedDocValuesField(groupField, new BytesRef(value)));
}
}
private AbstractAllGroupsCollector<?> createRandomCollector(String groupField, boolean canUseIDV) {
AbstractAllGroupsCollector<?> selected;
if (random().nextBoolean()) {
selected = new TermAllGroupsCollector(groupField);
} else {
ValueSource vs = new BytesRefFieldSource(groupField);
selected = new FunctionAllGroupsCollector(vs, new HashMap<Object, Object>());
}
if (VERBOSE) {
System.out.println("Selected implementation: " + selected.getClass().getName());
}
return selected;
}
}