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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.
*/
package org.elasticsearch.search.aggregations.metrics;
import org.apache.lucene.document.IntPoint;
import org.apache.lucene.document.NumericDocValuesField;
import org.apache.lucene.document.SortedNumericDocValuesField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.search.FieldValueQuery;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.Directory;
import org.elasticsearch.common.CheckedConsumer;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.NumberFieldMapper;
import org.elasticsearch.search.aggregations.AggregatorTestCase;
import org.elasticsearch.search.aggregations.metrics.max.InternalMax;
import org.elasticsearch.search.aggregations.metrics.max.MaxAggregationBuilder;
import org.elasticsearch.search.aggregations.metrics.max.MaxAggregator;
import java.io.IOException;
import java.util.Arrays;
import java.util.function.Consumer;
import static java.util.Collections.singleton;
public class MaxAggregatorTests extends AggregatorTestCase {
public void testNoDocs() throws IOException {
testCase(new MatchAllDocsQuery(), iw -> {
// Intentionally not writing any docs
}, max -> {
assertEquals(Double.NEGATIVE_INFINITY, max.getValue(), 0);
});
}
public void testNoMatchingField() throws IOException {
testCase(new MatchAllDocsQuery(), iw -> {
iw.addDocument(singleton(new SortedNumericDocValuesField("wrong_number", 7)));
iw.addDocument(singleton(new SortedNumericDocValuesField("wrong_number", 1)));
}, max -> {
assertEquals(Double.NEGATIVE_INFINITY, max.getValue(), 0);
});
}
public void testSomeMatchesSortedNumericDocValues() throws IOException {
testCase(new FieldValueQuery("number"), iw -> {
iw.addDocument(singleton(new SortedNumericDocValuesField("number", 7)));
iw.addDocument(singleton(new SortedNumericDocValuesField("number", 1)));
}, max -> {
assertEquals(7, max.getValue(), 0);
});
}
public void testSomeMatchesNumericDocValues() throws IOException {
testCase(new FieldValueQuery("number"), iw -> {
iw.addDocument(singleton(new NumericDocValuesField("number", 7)));
iw.addDocument(singleton(new NumericDocValuesField("number", 1)));
}, max -> {
assertEquals(7, max.getValue(), 0);
});
}
public void testQueryFiltering() throws IOException {
testCase(IntPoint.newRangeQuery("number", 0, 5), iw -> {
iw.addDocument(Arrays.asList(new IntPoint("number", 7), new SortedNumericDocValuesField("number", 7)));
iw.addDocument(Arrays.asList(new IntPoint("number", 1), new SortedNumericDocValuesField("number", 1)));
}, max -> {
assertEquals(1, max.getValue(), 0);
});
}
public void testQueryFiltersAll() throws IOException {
testCase(IntPoint.newRangeQuery("number", -1, 0), iw -> {
iw.addDocument(Arrays.asList(new IntPoint("number", 7), new SortedNumericDocValuesField("number", 7)));
iw.addDocument(Arrays.asList(new IntPoint("number", 1), new SortedNumericDocValuesField("number", 1)));
}, max -> {
assertEquals(Double.NEGATIVE_INFINITY, max.getValue(), 0);
});
}
private void testCase(Query query, CheckedConsumer<RandomIndexWriter, IOException> buildIndex, Consumer<InternalMax> verify)
throws IOException {
Directory directory = newDirectory();
RandomIndexWriter indexWriter = new RandomIndexWriter(random(), directory);
buildIndex.accept(indexWriter);
indexWriter.close();
IndexReader indexReader = DirectoryReader.open(directory);
IndexSearcher indexSearcher = newSearcher(indexReader, true, true);
MaxAggregationBuilder aggregationBuilder = new MaxAggregationBuilder("_name").field("number");
MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType(NumberFieldMapper.NumberType.LONG);
fieldType.setName("number");
try (MaxAggregator aggregator = createAggregator(aggregationBuilder, indexSearcher, fieldType)) {
aggregator.preCollection();
indexSearcher.search(query, aggregator);
aggregator.postCollection();
verify.accept((InternalMax) aggregator.buildAggregation(0L));
}
indexReader.close();
directory.close();
}
}
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