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Slightly more elegant rethrower (from AttributeFactory) :-) 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1702663 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Uwe Schindler 2015-09-12 18:59:54 +00:00
parent 996a3fb117
commit 421afac9a9
1 changed files with 8 additions and 11 deletions
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19
lucene/test-framework/src/java/org/apache/lucene/util/Rethrow.java
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@ -24,22 +24,19 @@ package org.apache.lucene.util;
* <p>Pulled from <a href="http://www.javapuzzlers.com">Java Puzzlers</a>.</p>
* @see <a href="http://www.amazon.com/Java-Puzzlers-Traps-Pitfalls-Corner/dp/032133678X">http://www.amazon.com/Java-Puzzlers-Traps-Pitfalls-Corner/dp/032133678X</a>
*/
@SuppressWarnings({"unchecked","rawtypes"})
public final class Rethrow {
/**
* Classy puzzler to rethrow any checked exception as an unchecked one.
*/
private static class Rethrower<T extends Throwable> {
private void rethrow(Throwable t) throws T {
throw (T) t;
}
}
private Rethrow() {}
/**
* Rethrows <code>t</code> (identical object).
*/
public static void rethrow(Throwable t) {
new Rethrower<Error>().rethrow(t);
Rethrow.<Error>rethrow0(t);
}
@SuppressWarnings("unchecked")
private static <T extends Throwable> void rethrow0(Throwable t) throws T {
throw (T) t;
}
}