org.apache.hadoop.hive.ql.exec.vector.expressions.aggregates.gen.VectorUDAFMaxDecimal64 Maven / Gradle / Ivy
/*
* 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.hadoop.hive.ql.exec.vector.expressions.aggregates.gen;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.vector.VectorAggregationDesc;
import org.apache.hadoop.hive.ql.exec.vector.ColumnVector;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.Mode;
/**
* VectorUDAFMaxDecimal64. Vectorized implementation for MIN/MAX aggregates for Decimal64.
*/
@Description(name = "max",
value = "_FUNC_(expr) - Returns the maximum value of expr (vectorized, type: decimal64)")
public class VectorUDAFMaxDecimal64 extends VectorUDAFMaxLong {
private static final long serialVersionUID = 1L;
// This constructor is used to momentarily create the object so match can be called.
public VectorUDAFMaxDecimal64() {
super();
}
public VectorUDAFMaxDecimal64(VectorAggregationDesc vecAggrDesc) {
super(vecAggrDesc);
}
@Override
public boolean matches(String name, ColumnVector.Type inputColVectorType,
ColumnVector.Type outputColVectorType, Mode mode) {
/*
* Min/max input and output is DECIMAL_64.
*
* Any mode (PARTIAL1, PARTIAL2, FINAL, COMPLETE).
*/
return
name.equals("max") &&
inputColVectorType == ColumnVector.Type.DECIMAL_64 &&
outputColVectorType == ColumnVector.Type.DECIMAL_64;
}
}