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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.OnePredicate

OnePredicate
final public class OnePredicate implements Predicate,PredicateDecorator,Serializable(Code)
Predicate implementation that returns true if only one of the predicates return true. If the array of predicates is empty, then this predicate returns false.

NOTE: In versions prior to 3.2 an array size of zero or one threw an exception.
since:
   Commons Collections 3.0
version:
   $Revision: 406071 $ $Date: 2006-05-13 11:44:37 +0100 (Sat, 13 May 2006) $
author:
   Stephen Colebourne
author:
   Matt Benson




Constructor Summary
public  OnePredicate(Predicate[] predicates)
     Constructor that performs no validation.

Method Summary
public  booleanevaluate(Object object)
     Evaluates the predicate returning true if only one decorated predicate returns true.
public static  PredicategetInstance(Predicate[] predicates)
     Factory to create the predicate.
public static  PredicategetInstance(Collection predicates)
     Factory to create the predicate.
public  Predicate[]getPredicates()
     Gets the predicates, do not modify the array.


Constructor Detail
OnePredicate
public OnePredicate(Predicate[] predicates)(Code)
Constructor that performs no validation. Use getInstance if you want that.
Parameters:
  predicates - the predicates to check, not cloned, not null




Method Detail
evaluate
public boolean evaluate(Object object)(Code)
Evaluates the predicate returning true if only one decorated predicate returns true.
Parameters:
  object - the input object true if only one decorated predicate returns true



getInstance
public static Predicate getInstance(Predicate[] predicates)(Code)
Factory to create the predicate.

If the array is size zero, the predicate always returns false. If the array is size one, then that predicate is returned.
Parameters:
  predicates - the predicates to check, cloned, not null the any predicate
throws:
  IllegalArgumentException - if the predicates array is null
throws:
  IllegalArgumentException - if any predicate in the array is null




getInstance
public static Predicate getInstance(Collection predicates)(Code)
Factory to create the predicate.
Parameters:
  predicates - the predicates to check, cloned, not null the one predicate
throws:
  IllegalArgumentException - if the predicates array is null
throws:
  IllegalArgumentException - if any predicate in the array is null



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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