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ParentJoinPlugin.java
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ParentJoinPlugin.java
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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.join;
import org.elasticsearch.index.mapper.Mapper;
import org.elasticsearch.join.aggregations.ChildrenAggregationBuilder;
import org.elasticsearch.join.aggregations.InternalChildren;
import org.elasticsearch.join.aggregations.InternalParent;
import org.elasticsearch.join.aggregations.ParentAggregationBuilder;
import org.elasticsearch.join.mapper.ParentJoinFieldMapper;
import org.elasticsearch.join.query.HasChildQueryBuilder;
import org.elasticsearch.join.query.HasParentQueryBuilder;
import org.elasticsearch.join.query.ParentIdQueryBuilder;
import org.elasticsearch.plugins.MapperPlugin;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.plugins.SearchPlugin;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class ParentJoinPlugin extends Plugin implements SearchPlugin, MapperPlugin {
public ParentJoinPlugin() {
}
@Override
public List<QuerySpec<?>> getQueries() {
return Arrays.asList(
new QuerySpec<>(HasChildQueryBuilder.NAME, HasChildQueryBuilder::new, HasChildQueryBuilder::fromXContent),
new QuerySpec<>(HasParentQueryBuilder.NAME, HasParentQueryBuilder::new, HasParentQueryBuilder::fromXContent),
new QuerySpec<>(ParentIdQueryBuilder.NAME, ParentIdQueryBuilder::new, ParentIdQueryBuilder::fromXContent)
);
}
@Override
public List<AggregationSpec> getAggregations() {
return Arrays.asList(
new AggregationSpec(ChildrenAggregationBuilder.NAME, ChildrenAggregationBuilder::new, ChildrenAggregationBuilder::parse)
.addResultReader(InternalChildren::new),
new AggregationSpec(ParentAggregationBuilder.NAME, ParentAggregationBuilder::new, ParentAggregationBuilder::parse)
.addResultReader(InternalParent::new)
);
}
@Override
public Map<String, Mapper.TypeParser> getMappers() {
return Collections.singletonMap(ParentJoinFieldMapper.CONTENT_TYPE, new ParentJoinFieldMapper.TypeParser());
}
}