Package org.apache.commons.collections.functors

Class TransformedPredicate

java.lang.Object
org.apache.commons.collections.functors.TransformedPredicate
All Implemented Interfaces:
Serializable, PredicateDecorator, Predicate
public final class TransformedPredicate extends Object implements Predicate, PredicateDecorator, Serializable
Predicate implementation that transforms the given object before invoking another Predicate.
Since:
Commons Collections 3.1
Version:
$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
Author:
Alban Peignier, Stephen Colebourne
See Also:

  • Constructor Details

    • TransformedPredicate

      public TransformedPredicate(Transformer transformer, Predicate predicate)
      Constructor that performs no validation. Use getInstance if you want that.
      Parameters:
      transformer - the transformer to use
      predicate - the predicate to decorate

  • Method Details

    • getInstance

      public static Predicate getInstance(Transformer transformer, Predicate predicate)
      Factory to create the predicate.
      Parameters:
      transformer - the transformer to call
      predicate - the predicate to call with the result of the transform
      Returns:
      the predicate
      Throws:
      IllegalArgumentException - if the transformer or the predicate is null

    • evaluate

      public boolean evaluate(Object object)
      Evaluates the predicate returning the result of the decorated predicate once the input has been transformed
      Specified by:
      evaluate in interface Predicate
      Parameters:
      object - the input object which will be transformed
      Returns:
      true if decorated predicate returns true

    • getPredicates

      public Predicate[] getPredicates()
      Gets the predicate being decorated.
      Specified by:
      getPredicates in interface PredicateDecorator
      Returns:
      the predicate as the only element in an array
      Since:
      Commons Collections 3.1

    • getTransformer

      public Transformer getTransformer()
      Gets the transformer in use.
      Returns:
      the transformer