/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.eagle.query.aggregate.raw;

import java.util.List;

/**
 * The generic interface to unify the GroupbyKeyValue-based results of different
 * business logic aggregates like RawAggregator or TimeSeriesAggregator
 *
 * @see org.apache.eagle.query.aggregate.timeseries.TimeSeriesAggregator
 * @see RawAggregator
 *
 * @since : 11/3/14,2014
 *
 */
public interface GroupbyKeyAggregatable {
    /**
     * @see RawAggregator#getGroupbyKeyValues()
     * @see org.apache.eagle.query.aggregate.timeseries.TimeSeriesAggregator#getGroupbyKeyValues()
     *
     * @return
     */
    List<GroupbyKeyValue> getGroupbyKeyValues();
}