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/*
 * Original version of this file is located at:
 * https://github.com/elastic/elasticsearch/blob/v6.4.3/server/src/main/java/org/elasticsearch/index/query/NestedQueryBuilder.java
 *
 * 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 com.icthh.xm.commons.search.builder;

import com.icthh.xm.commons.search.enums.ScoreMode;

public class NestedQueryBuilder extends AbstractQueryBuilder {

    public static final String NAME = "nested";
    public static final boolean DEFAULT_IGNORE_UNMAPPED = false;

    private final String path;
    private final ScoreMode scoreMode;
    private final QueryBuilder query;
    private InnerHitBuilder innerHitBuilder;
    private boolean ignoreUnmapped = DEFAULT_IGNORE_UNMAPPED;

    public NestedQueryBuilder(String path, QueryBuilder query, ScoreMode scoreMode) {
        this(path, query, scoreMode, null);
    }

    private NestedQueryBuilder(String path, QueryBuilder query, ScoreMode scoreMode, InnerHitBuilder innerHitBuilder) {
        this.path = requireValue(path, "[" + NAME + "] requires 'path' field");
        this.query = requireValue(query, "[" + NAME + "] requires 'query' field");
        this.scoreMode = requireValue(scoreMode, "[" + NAME + "] requires 'score_mode' field");
        this.innerHitBuilder = innerHitBuilder;
    }

    public InnerHitBuilder innerHit() {
        return innerHitBuilder;
    }

    public NestedQueryBuilder innerHit(InnerHitBuilder innerHitBuilder) {
        this.innerHitBuilder = innerHitBuilder;
        innerHitBuilder.setIgnoreUnmapped(ignoreUnmapped);
        return this;
    }

    public String getPath() {
        return path;
    }

    public QueryBuilder getQuery() {
        return query;
    }

    public ScoreMode scoreMode() {
        return scoreMode;
    }

    public boolean ignoreUnmapped() {
        return ignoreUnmapped;
    }

    public final String getWriteableName() {
        return NAME;
    }
}