Constructor Detail

• NullIsFalsePredicate

  public NullIsFalsePredicate(Predicate<? super T> predicate)

  Constructor that performs no validation. Use getInstance if you want that.

  Parameters:

  predicate - the predicate to call after the null check

Method Detail

• nullIsFalsePredicate

  public static <T> Predicate<T> nullIsFalsePredicate(Predicate<? super T> predicate)

  Factory to create the null false predicate.

  Type Parameters:

  T - the type that the predicate queries

  Parameters:

  predicate - the predicate to decorate, not null

  Returns:

  the predicate

  Throws:

  IllegalArgumentException - if the predicate is null

• evaluate

  public boolean evaluate(T object)

  Evaluates the predicate returning the result of the decorated predicate once a null check is performed.

  Specified by:

  evaluate in interface Predicate<T>

  Parameters:

  object - the input object

  Returns:

  true if decorated predicate returns true, false if input is null

• 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