Package org.apache.commons.collections.functors

Class IdentityPredicate

java.lang.Object
org.apache.commons.collections.functors.IdentityPredicate
All Implemented Interfaces:
Serializable, Predicate
public final class IdentityPredicate extends Object implements Predicate, Serializable
Predicate implementation that returns true if the input is the same object as the one stored in this predicate.
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

    • IdentityPredicate

      public IdentityPredicate(Object object)
      Constructor that performs no validation. Use getInstance if you want that.
      Parameters:
      object - the object to compare to

  • Method Details

    • getInstance

      public static Predicate getInstance(Object object)
      Factory to create the identity predicate.
      Parameters:
      object - the object to compare to
      Returns:
      the predicate
      Throws:
      IllegalArgumentException - if the predicate is null

    • evaluate

      public boolean evaluate(Object object)
      Evaluates the predicate returning true if the input object is identical to the stored object.
      Specified by:
      evaluate in interface Predicate
      Parameters:
      object - the input object
      Returns:
      true if input is the same object as the stored value

    • getValue

      public Object getValue()
      Gets the value.
      Returns:
      the value
      Since:
      Commons Collections 3.1