org.dinky.shaded.paimon.mergetree.compact.aggregate.FieldLastNonNullValueAgg Maven / Gradle / Ivy

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/*
 * 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.dinky.shaded.paimon.mergetree.compact.aggregate;

import org.dinky.shaded.paimon.types.DataType;

/** last non-null value aggregate a field of a row. */
public class FieldLastNonNullValueAgg extends FieldAggregator {

    public static final String NAME = "last_non_null_value";

    public FieldLastNonNullValueAgg(DataType dataType) {
        super(dataType);
    }

    @Override
    String name() {
        return NAME;
    }

    @Override
    public Object agg(Object accumulator, Object inputField) {
        return (inputField == null) ? accumulator : inputField;
    }
}