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* 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
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package org.elasticsearch.search.aggregations.metrics.tophits;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.fetch.StoredFieldsContext;
import org.elasticsearch.search.fetch.subphase.DocValueFieldsContext;
import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
import org.elasticsearch.search.fetch.subphase.ScriptFieldsContext;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.search.internal.SubSearchContext;
import org.elasticsearch.search.sort.SortAndFormats;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Optional;
public class TopHitsAggregatorFactory extends AggregatorFactory<TopHitsAggregatorFactory> {
private final int from;
private final int size;
private final boolean explain;
private final boolean version;
private final boolean trackScores;
private final Optional<SortAndFormats> sort;
private final HighlightBuilder highlightBuilder;
private final StoredFieldsContext storedFieldsContext;
private final List<String> docValueFields;
private final List<ScriptFieldsContext.ScriptField> scriptFields;
private final FetchSourceContext fetchSourceContext;
public TopHitsAggregatorFactory(String name, int from, int size, boolean explain, boolean version, boolean trackScores,
Optional<SortAndFormats> sort, HighlightBuilder highlightBuilder, StoredFieldsContext storedFieldsContext,
List<String> docValueFields, List<ScriptFieldsContext.ScriptField> scriptFields, FetchSourceContext fetchSourceContext,
SearchContext context, AggregatorFactory<?> parent, AggregatorFactories.Builder subFactories, Map<String, Object> metaData)
throws IOException {
super(name, context, parent, subFactories, metaData);
this.from = from;
this.size = size;
this.explain = explain;
this.version = version;
this.trackScores = trackScores;
this.sort = sort;
this.highlightBuilder = highlightBuilder;
this.storedFieldsContext = storedFieldsContext;
this.docValueFields = docValueFields;
this.scriptFields = scriptFields;
this.fetchSourceContext = fetchSourceContext;
}
@Override
public Aggregator createInternal(Aggregator parent, boolean collectsFromSingleBucket, List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) throws IOException {
SubSearchContext subSearchContext = new SubSearchContext(context);
subSearchContext.parsedQuery(context.parsedQuery());
subSearchContext.explain(explain);
subSearchContext.version(version);
subSearchContext.trackScores(trackScores);
subSearchContext.from(from);
subSearchContext.size(size);
if (sort.isPresent()) {
subSearchContext.sort(sort.get());
}
if (storedFieldsContext != null) {
subSearchContext.storedFieldsContext(storedFieldsContext);
}
if (docValueFields != null) {
subSearchContext.docValueFieldsContext(new DocValueFieldsContext(docValueFields));
}
for (ScriptFieldsContext.ScriptField field : scriptFields) {
subSearchContext.scriptFields().add(field);
}
if (fetchSourceContext != null) {
subSearchContext.fetchSourceContext(fetchSourceContext);
}
if (highlightBuilder != null) {
subSearchContext.highlight(highlightBuilder.build(context.getQueryShardContext()));
}
return new TopHitsAggregator(context.fetchPhase(), subSearchContext, name, context, parent,
pipelineAggregators, metaData);
}
}