Java Doc for SwitchClosure.java in  » Library » Apache-common-Collections » org » apache » commons » collections » functors » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Library » Apache common Collections » org.apache.commons.collections.functors 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.commons.collections.functors.SwitchClosure

SwitchClosure
public class SwitchClosure implements Closure,Serializable(Code)
Closure implementation calls the closure whose predicate returns true, like a switch statement.
since:
   Commons Collections 3.0
version:
   $Revision: 348444 $ $Date: 2005-11-23 14:06:56 +0000 (Wed, 23 Nov 2005) $
author:
   Stephen Colebourne



Constructor Summary
public  SwitchClosure(Predicate[] predicates, Closure[] closures, Closure defaultClosure)
     Constructor that performs no validation.

Method Summary
public  voidexecute(Object input)
    
public  Closure[]getClosures()
     Gets the closures, do not modify the array.
public  ClosuregetDefaultClosure()
     Gets the default closure.
public static  ClosuregetInstance(Predicate[] predicates, Closure[] closures, Closure defaultClosure)
     Factory method that performs validation and copies the parameter arrays.
public static  ClosuregetInstance(Map predicatesAndClosures)
     Create a new Closure that calls one of the closures depending on the predicates.
public  Predicate[]getPredicates()
     Gets the predicates, do not modify the array.


Constructor Detail
SwitchClosure
public SwitchClosure(Predicate[] predicates, Closure[] closures, Closure defaultClosure)(Code)
Constructor that performs no validation. Use getInstance if you want that.
Parameters:
  predicates - array of predicates, not cloned, no nulls
Parameters:
  closures - matching array of closures, not cloned, no nulls
Parameters:
  defaultClosure - the closure to use if no match, null means nop




Method Detail
execute
public void execute(Object input)(Code)
Executes the closure whose matching predicate returns true
Parameters:
  input - the input object



getClosures
public Closure[] getClosures()(Code)
Gets the closures, do not modify the array. the closures
since:
   Commons Collections 3.1



getDefaultClosure
public Closure getDefaultClosure()(Code)
Gets the default closure. the default closure
since:
   Commons Collections 3.1



getInstance
public static Closure getInstance(Predicate[] predicates, Closure[] closures, Closure defaultClosure)(Code)
Factory method that performs validation and copies the parameter arrays.
Parameters:
  predicates - array of predicates, cloned, no nulls
Parameters:
  closures - matching array of closures, cloned, no nulls
Parameters:
  defaultClosure - the closure to use if no match, null means nop the chained closure
throws:
  IllegalArgumentException - if array is null
throws:
  IllegalArgumentException - if any element in the array is null



getInstance
public static Closure getInstance(Map predicatesAndClosures)(Code)
Create a new Closure that calls one of the closures depending on the predicates.

The Map consists of Predicate keys and Closure values. A closure is called if its matching predicate returns true. Each predicate is evaluated until one returns true. If no predicates evaluate to true, the default closure is called. The default closure is set in the map with a null key. The ordering is that of the iterator() method on the entryset collection of the map.
Parameters:
  predicatesAndClosures - a map of predicates to closures the switch closure
throws:
  IllegalArgumentException - if the map is null
throws:
  IllegalArgumentException - if any closure in the map is null
throws:
  ClassCastException - if the map elements are of the wrong type




getPredicates
public Predicate[] getPredicates()(Code)
Gets the predicates, do not modify the array. the predicates
since:
   Commons Collections 3.1



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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