org.elasticsearch.index.query.ExistsFilterBuilder Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon 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.index.query;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
/**
* Constructs a filter that only match on documents that the field has a value in them.
*
*
*/
public class ExistsFilterBuilder extends BaseFilterBuilder {
private String name;
private String filterName;
public ExistsFilterBuilder(String name) {
this.name = name;
}
/**
* Sets the filter name for the filter that can be used when searching for matched_filters per hit.
*/
public ExistsFilterBuilder filterName(String filterName) {
this.filterName = filterName;
return this;
}
@Override
protected void doXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(ExistsFilterParser.NAME);
builder.field("field", name);
if (filterName != null) {
builder.field("_name", filterName);
}
builder.endObject();
}
}