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/tags/release-0.1-rc2/hive/external/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFOPPositive.java

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Java | 69 lines | 37 code | 11 blank | 21 comment | 0 complexity | 344c8ae79662e84ab3565d48aa158d3e MD5 | raw file
 1/**
 2 * Licensed to the Apache Software Foundation (ASF) under one
 3 * or more contributor license agreements.  See the NOTICE file
 4 * distributed with this work for additional information
 5 * regarding copyright ownership.  The ASF licenses this file
 6 * to you under the Apache License, Version 2.0 (the
 7 * "License"); you may not use this file except in compliance
 8 * with the License.  You may obtain a copy of the License at
 9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19package org.apache.hadoop.hive.ql.udf;
20
21import org.apache.hadoop.hive.ql.exec.Description;
22import org.apache.hadoop.hive.serde2.io.ByteWritable;
23import org.apache.hadoop.hive.serde2.io.DoubleWritable;
24import org.apache.hadoop.hive.serde2.io.ShortWritable;
25import org.apache.hadoop.io.FloatWritable;
26import org.apache.hadoop.io.IntWritable;
27import org.apache.hadoop.io.LongWritable;
28
29/**
30 * UDFOPPositive.
31 *
32 */
33@Description(name = "positive", value = "_FUNC_ a - Returns a")
34public class UDFOPPositive extends UDFBaseNumericUnaryOp {
35
36  public UDFOPPositive() {
37  }
38
39  @Override
40  public ByteWritable evaluate(ByteWritable a) {
41    return a;
42  }
43
44  @Override
45  public ShortWritable evaluate(ShortWritable a) {
46    return a;
47  }
48
49  @Override
50  public IntWritable evaluate(IntWritable a) {
51    return a;
52  }
53
54  @Override
55  public LongWritable evaluate(LongWritable a) {
56    return a;
57  }
58
59  @Override
60  public FloatWritable evaluate(FloatWritable a) {
61    return a;
62  }
63
64  @Override
65  public DoubleWritable evaluate(DoubleWritable a) {
66    return a;
67  }
68
69}