org.apache.commons.collections4.functors

## Class TransformedPredicate<T>

- java.lang.Object
- - org.apache.commons.collections4.functors.TransformedPredicate<T>

- All Implemented Interfaces:
    Serializable, PredicateDecorator<T>, Predicate<T>

      public final class TransformedPredicate<T>
      extends Object
      implements PredicateDecorator<T>, Serializable

  Predicate implementation that transforms the given object before invoking another `Predicate`.
  Since:
    3.1
  Version:
    $Id: TransformedPredicate.java 1686855 2015-06-22 13:00:27Z tn $
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `TransformedPredicate(Transformer<? super T,? extends T> transformer, Predicate<? super T> predicate)` Constructor that performs no validation.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `evaluate(T object)` Evaluates the predicate returning the result of the decorated predicate once the input has been transformed
    `Predicate<? super T>[]` | `getPredicates()` Gets the predicate being decorated.
    `Transformer<? super T,? extends T>` | `getTransformer()` Gets the transformer in use.
    `static <T> Predicate<T>` | `transformedPredicate(Transformer<? super T,? extends T> transformer, Predicate<? super T> predicate)` Factory to create the predicate.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### TransformedPredicate

          public TransformedPredicate(Transformer<? super T,? extends T> transformer,
                              Predicate<? super T> predicate)

      Constructor that performs no validation. Use `transformedPredicate` if you want that.
      Parameters:
        `transformer` - the transformer to use
        `predicate` - the predicate to decorate

  - ### Method Detail

    - #### transformedPredicate

          public static <T> Predicate<T> transformedPredicate(Transformer<? super T,? extends T> transformer,
                                              Predicate<? super T> predicate)

      Factory to create the predicate.
      Type Parameters:
        `T` - the type that the predicate queries
      Parameters:
        `transformer` - the transformer to call
        `predicate` - the predicate to call with the result of the transform
      Returns:
        the predicate
      Throws:
        `NullPointerException` - if the transformer or the predicate is null

    - #### evaluate

          public boolean evaluate(T object)

      Evaluates the predicate returning the result of the decorated predicate once the input has been transformed
      Specified by:
        `evaluate` in interface `Predicate<T>`
      Parameters:
        `object` - the input object which will be transformed
      Returns:
        true if decorated predicate returns true

    - #### getPredicates

          public Predicate<? super T>[] getPredicates()

      Gets the predicate being decorated.
      Specified by:
        `getPredicates` in interface `PredicateDecorator<T>`
      Returns:
        the predicate as the only element in an array
      Since:
        3.1

    - #### getTransformer

          public Transformer<? super T,? extends T> getTransformer()

      Gets the transformer in use.
      Returns:
        the transformer

Copyright © 2001–2015 The Apache Software Foundation. All rights reserved.