/*
 * 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.kylin.measure.corr;

/**
 * dummy corr udaf for calcite
 */
public class CorrAggFunc {

    public static Object init() {
        return null;
    }

    public static Object add(Object c, Object v1, Object v2) {
        return null;
    }

    public static Object merge(Object c1, Object c2) {
        return null;
    }

    public static Double result(Object c) {
        return 0.0;
    }

}
