forked from apache/incubator-hivemall
-
Notifications
You must be signed in to change notification settings - Fork 0
/
AssertUDF.java
48 lines (43 loc) · 1.84 KB
/
AssertUDF.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/*
* 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 hivemall.tools.sanity;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.udf.UDFType;
@Description(name = "assert",
value = "_FUNC_(boolean condition) or _FUNC_(boolean condition, string errMsg)"
+ "- Throws HiveException if condition is not met",
extended = "SELECT count(1) FROM stock_price WHERE assert(price > 0.0);\n"
+ "SELECT count(1) FROM stock_price WHRE assert(price > 0.0, 'price MUST be more than 0.0')")
@UDFType(deterministic = false, stateful = false)
public final class AssertUDF extends UDF {
public boolean evaluate(boolean condition) throws HiveException {
if (!condition) {
throw new HiveException();
}
return true;
}
public boolean evaluate(boolean condition, String errMsg) throws HiveException {
if (!condition) {
throw new HiveException(errMsg);
}
return true;
}
}