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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.index.query;

import com.google.common.collect.Lists;
import org.elasticsearch.common.xcontent.XContentBuilder;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;

/**
 * A filter that matches documents matching boolean combinations of other filters.
 * @deprecated Use {@link BoolQueryBuilder} instead
 */
@Deprecated
public class OrQueryBuilder extends QueryBuilder {

    private ArrayList filters = Lists.newArrayList();

    private String queryName;

    public OrQueryBuilder(QueryBuilder... filters) {
        Collections.addAll(this.filters, filters);
    }

    /**
     * Adds a filter to the list of filters to "or".
     */
    public OrQueryBuilder add(QueryBuilder filterBuilder) {
        filters.add(filterBuilder);
        return this;
    }

    public OrQueryBuilder queryName(String queryName) {
        this.queryName = queryName;
        return this;
    }

    @Override
    protected void doXContent(XContentBuilder builder, Params params) throws IOException {
        builder.startObject(OrQueryParser.NAME);
        builder.startArray("filters");
        for (QueryBuilder filter : filters) {
            filter.toXContent(builder, params);
        }
        builder.endArray();
        if (queryName != null) {
            builder.field("_name", queryName);
        }
        builder.endObject();
    }
}