forked from apache/flink
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[hotfix] Add FunctionUtils#uncheckedFunction to convert FunctionWithE…
…xcpetion into Function
- Loading branch information
1 parent
bdbd11d
commit 6f1fbd2
Showing
1 changed file
with
53 additions
and
0 deletions.
There are no files selected for viewing
53 changes: 53 additions & 0 deletions
53
flink-core/src/main/java/org/apache/flink/util/function/FunctionUtils.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,53 @@ | ||
/* | ||
* 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:https://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.flink.util.function; | ||
|
||
import org.apache.flink.util.ExceptionUtils; | ||
|
||
import java.util.function.Function; | ||
|
||
/** | ||
* Utility class for Flink's functions. | ||
*/ | ||
public class FunctionUtils { | ||
|
||
private FunctionUtils() { | ||
throw new UnsupportedOperationException("This class should never be instantiated."); | ||
} | ||
|
||
/** | ||
* Convert at {@link FunctionWithException} into a {@link Function}. | ||
* | ||
* @param functionWithException function with exception to convert into a function | ||
* @param <A> input type | ||
* @param <B> output type | ||
* @return {@link Function} which throws all checked exception as an unchecked exception. | ||
*/ | ||
public static <A, B> Function<A, B> uncheckedFunction(FunctionWithException<A, B, ?> functionWithException) { | ||
return (A value) -> { | ||
try { | ||
return functionWithException.apply(value); | ||
} catch (Throwable t) { | ||
ExceptionUtils.rethrow(t); | ||
// we need this to appease the compiler :-( | ||
return null; | ||
} | ||
}; | ||
} | ||
} |