/**
* 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.udf;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.serde2.io.ByteWritable;
import org.apache.hadoop.hive.serde2.io.ShortWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
/**
* UDFOPBitRightShift.
*
*/
@Description(name = "shiftright", value = "_FUNC_(a, b) - Bitwise right shift",
extended = "Returns int for tinyint, smallint and int a. Returns bigint for bigint a."
+ "\nExample:\n > SELECT _FUNC_(4, 1);\n 2")
public class UDFOPBitShiftRight extends UDFBaseBitOP {
public UDFOPBitShiftRight() {
}
public IntWritable evaluate(ByteWritable a, IntWritable b) {
if (a == null || b == null) {
return null;
}
intWritable.set(a.get() >> b.get());
return intWritable;
}
public IntWritable evaluate(ShortWritable a, IntWritable b) {
if (a == null || b == null) {
return null;
}
intWritable.set(a.get() >> b.get());
return intWritable;
}
public IntWritable evaluate(IntWritable a, IntWritable b) {
if (a == null || b == null) {
return null;
}
intWritable.set(a.get() >> b.get());
return intWritable;
}
public LongWritable evaluate(LongWritable a, IntWritable b) {
if (a == null || b == null) {
return null;
}
longWritable.set(a.get() >> b.get());
return longWritable;
}
}