/**
* 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.UDF;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.io.Text;
@Description(
name = "testudf",
value = "_FUNC_(str) - combines arguments to output string",
extended = "Example:\n" +
" > SELECT testudf(name, dob, salary) FROM employee;\n" +
" Jack"
)
/* This is a test function that takes three different kinds
* of arguments, for use to verify vectorized UDF invocation.
*/
public class ConcatTextLongDoubleUDF extends UDF {
public Text evaluate(Text s, Long i, Double d) {
if (s == null
|| i == null
|| d == null) {
return null;
}
StringBuilder sb = new StringBuilder();
sb.append(s.toString());
sb.append(":");
sb.append(i);
sb.append(":");
sb.append(d);
return new Text(sb.toString());
}
}