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Apache Solr (module: core)
/*
* 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.solr.search.grouping.distributed.shardresultserializer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;
import org.apache.lucene.search.grouping.SearchGroup;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.BytesRefBuilder;
import org.apache.lucene.util.CharsRefBuilder;
import org.apache.solr.common.util.CollectionUtil;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.schema.SchemaField;
import org.apache.solr.search.SolrIndexSearcher;
import org.apache.solr.search.grouping.Command;
import org.apache.solr.search.grouping.distributed.command.SearchGroupsFieldCommand;
import org.apache.solr.search.grouping.distributed.command.SearchGroupsFieldCommandResult;
/**
* Implementation for transforming {@link SearchGroup} into a {@link NamedList} structure and visa
* versa.
*/
public class SearchGroupsResultTransformer
implements ShardResultTransformer<
List>, Map> {
private static final String TOP_GROUPS = "topGroups";
private static final String GROUP_COUNT = "groupCount";
private final SolrIndexSearcher searcher;
public SearchGroupsResultTransformer(SolrIndexSearcher searcher) {
this.searcher = searcher;
}
@Override
public NamedList> transform(List> data) throws IOException {
final NamedList> result = new NamedList<>(data.size());
for (Command command : data) {
final NamedList