/**
* 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.udf.legacy;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.io.LongWritable;
/* A UDF like one a user would create, implementing the UDF interface.
* This is to be used to test the vectorized UDF adaptor for legacy-style UDFs.
*/
@Description(
name = "longudf",
value = "_FUNC_(arg) - returns arg + 1000",
extended = "Example:\n" +
" > SELECT longudf(eno) FROM employee;\n"
)
public class LongUDF extends UDF {
public LongWritable evaluate(LongWritable i) {
if (i == null) {
return null;
}
return new LongWritable(i.get() + 1000);
}
}