org.apache.commons.collections.functors
Class IfClosure
java.lang.Object
|
+--org.apache.commons.collections.functors.IfClosure
- All Implemented Interfaces:
- Closure, Serializable
- public class IfClosure
- extends Object
- implements Closure, Serializable
Closure implementation acts as an if statement calling one or other closure
based on a predicate.
- Since:
- Commons Collections 3.0
- Version:
- $Revision: 1.3 $ $Date: 2004/01/14 21:43:09 $
- Author:
- Stephen Colebourne
- See Also:
- Serialized Form
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
IfClosure
public IfClosure(Predicate predicate,
Closure trueClosure,
Closure falseClosure)
- Constructor that performs no validation.
Use
getInstance
if you want that.
- Parameters:
predicate
- predicate to switch on, not nulltrueClosure
- closure used if true, not nullfalseClosure
- closure used if false, not null
getInstance
public static Closure getInstance(Predicate predicate,
Closure trueClosure,
Closure falseClosure)
- Factory method that performs validation.
- Parameters:
predicate
- predicate to switch ontrueClosure
- closure used if truefalseClosure
- closure used if false- Returns:
- the
if
closure - Throws:
IllegalArgumentException
- if any argument is null
execute
public void execute(Object input)
- Execute the correct closure.
- Specified by:
execute
in interface Closure
- Following copied from interface:
org.apache.commons.collections.Closure
- Parameters:
input
- the input to execute on- Throws:
ClassCastException
- (runtime) if the input is the wrong classIllegalArgumentException
- (runtime) if the input is invalidFunctorException
- (runtime) if any other error occurs
Copyright © 2001-2004 Apache Software Foundation. All Rights Reserved.