org.apache.hadoop.hive.ql.udf.UDFOPLongDivide 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.udf;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.io.LongWritable;
/**
* UDFOPLongDivide.
*
*/
@Description(name = "div",
value = "a _FUNC_ b - Divide a by b rounded to the long integer",
extended = "Example:\n"
+ " > SELECT 3 _FUNC_ 2 FROM src LIMIT 1;\n" + " 1")
public class UDFOPLongDivide extends UDF {
private LongWritable longWritable = new LongWritable();
public LongWritable evaluate(LongWritable a, LongWritable b) {
// LOG.info("Get input " + a.getClass() + ":" + a + " " + b.getClass() + ":"
// + b);
if ((a == null) || (b == null)) {
return null;
}
longWritable.set(a.get() / b.get());
return longWritable;
}
}