001/*
002 * (C) Copyright 2018 Nuxeo (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Gethin James
018 */
019package org.nuxeo.elasticsearch.aggregate;
020
021import org.elasticsearch.search.aggregations.AggregationBuilder;
022import org.elasticsearch.search.aggregations.AggregationBuilders;
023import org.nuxeo.ecm.core.api.DocumentModel;
024import org.nuxeo.ecm.platform.query.api.AggregateDefinition;
025
026import com.fasterxml.jackson.annotation.JsonIgnore;
027
028/**
029 * Counts the missing values for the specified field
030 *
031 * @since 10.3
032 */
033public class MissingAggregate extends SingleBucketAggregate {
034
035    public MissingAggregate(AggregateDefinition definition, DocumentModel searchDocument) {
036        super(definition, searchDocument);
037    }
038
039    @JsonIgnore
040    @Override
041    public AggregationBuilder getEsAggregate() {
042        return AggregationBuilders.missing(getId()).field(getField());
043    }
044}