com.facebook.presto.jdbc.internal.spi.function.SqlInvokedAggregationFunctionImplementation Maven / Gradle / Ivy

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/*
 * Licensed 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 com.facebook.presto.jdbc.internal.spi.function;

import com.facebook.presto.jdbc.internal.common.type.Type;
import com.facebook.presto.jdbc.internal.spi.api.Experimental;

import static java.util.Objects.requireNonNull;

@Experimental
public class SqlInvokedAggregationFunctionImplementation
        implements AggregationFunctionImplementation
{
    private final Type intermediateType;

    private final Type finalType;

    private final boolean isOrderSensitive;

    public SqlInvokedAggregationFunctionImplementation(Type intermediateType, Type finalType, boolean isOrderSensitive)
    {
        this.intermediateType = requireNonNull(intermediateType, "intermediateType is null");
        this.finalType = requireNonNull(finalType, "finalType is null");
        this.isOrderSensitive = isOrderSensitive;
    }

    @Override
    public Type getIntermediateType()
    {
        return intermediateType;
    }

    @Override
    public Type getFinalType()
    {
        return finalType;
    }

    @Override
    public boolean isDecomposable()
    {
        // This class assumes the aggregation function is decomposable.
        return true;
    }

    @Override
    public boolean isOrderSensitive()
    {
        return isOrderSensitive;
    }
}