/*
* 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.bucket.nested;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import java.io.IOException;
/**
* Builder for the {@link ReverseNested} aggregation.
*/
public class ReverseNestedBuilder extends AggregationBuilder<ReverseNestedBuilder> {
private String path;
/**
* Sole constructor.
*/
public ReverseNestedBuilder(String name) {
super(name, InternalReverseNested.TYPE.name());
}
/**
* Set the path to use for this nested aggregation. The path must match
* the path to a nested object in the mappings. If it is not specified
* then this aggregation will go back to the root document.
*/
public ReverseNestedBuilder path(String path) {
this.path = path;
return this;
}
@Override
protected XContentBuilder internalXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
if (path != null) {
builder.field("path", path);
}
return builder.endObject();
}
}