org.elasticsearch.index.search.stats.StatsGroupsParseElement Maven / Gradle / Ivy

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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.search.stats;

import com.google.common.collect.ImmutableList;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.search.SearchParseElement;
import org.elasticsearch.search.internal.SearchContext;

import java.util.ArrayList;
import java.util.List;

/**
 */
public class StatsGroupsParseElement implements SearchParseElement {

    @Override
    public void parse(XContentParser parser, SearchContext context) throws Exception {
        XContentParser.Token token = parser.currentToken();
        if (token.isValue()) {
            context.groupStats(ImmutableList.of(parser.text()));
        } else if (token == XContentParser.Token.START_ARRAY) {
            List groupStats = new ArrayList<>(4);
            while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
                groupStats.add(parser.text());
            }
            context.groupStats(groupStats);
        }
    }
}