Package org.apache.commons.collections.functors

Class PredicateTransformer

java.lang.Object
org.apache.commons.collections.functors.PredicateTransformer
All Implemented Interfaces:
Serializable, Transformer
public class PredicateTransformer extends Object implements Transformer, Serializable
Transformer implementation that calls a Predicate using the input object and then returns the input.
Since:
Commons Collections 3.0
Version:
$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
Author:
Stephen Colebourne
See Also:

  • Constructor Details

    • PredicateTransformer

      public PredicateTransformer(Predicate predicate)
      Constructor that performs no validation. Use getInstance if you want that.
      Parameters:
      predicate - the predicate to call, not null

  • Method Details

    • getInstance

      public static Transformer getInstance(Predicate predicate)
      Factory method that performs validation.
      Parameters:
      predicate - the predicate to call, not null
      Returns:
      the predicate transformer
      Throws:
      IllegalArgumentException - if the predicate is null

    • transform

      public Object transform(Object input)
      Transforms the input to result by calling a predicate.
      Specified by:
      transform in interface Transformer
      Parameters:
      input - the input object to transform
      Returns:
      the transformed result

    • getPredicate

      public Predicate getPredicate()
      Gets the predicate.
      Returns:
      the predicate
      Since:
      Commons Collections 3.1