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package com.abubusoft.kripton.common;
/**
* Determines a true or false value for a given input.
*
* The {@link Predicates} class provides common predicates and related utilities.
*
*
See the Guava User Guide article on the use of {@code
* Predicate}.
*
* @author Kevin Bourrillion
* @since 2.0 (imported from Google Collections Library)
*/
public interface Predicate {
/**
* Returns the result of applying this predicate to {@code input}. This method is generally
* expected, but not absolutely required, to have the following properties:
*
*
* - Its execution does not cause any observable side effects.
*
- The computation is consistent with equals; that is, {@link Objects#equal
* Objects.equal}{@code (a, b)} implies that {@code predicate.apply(a) ==
* predicate.apply(b))}.
*
*
* @throws NullPointerException if {@code input} is null and this predicate does not accept null
* arguments
*/
boolean apply(T input);
/**
* Indicates whether another object is equal to this predicate.
*
* Most implementations will have no reason to override the behavior of {@link Object#equals}.
* However, an implementation may also choose to return {@code true} whenever {@code object} is a
* {@link Predicate} that it considers interchangeable with this one. "Interchangeable"
* typically means that {@code this.apply(t) == that.apply(t)} for all {@code t} of type
* {@code T}). Note that a {@code false} result from this method does not imply that the
* predicates are known not to be interchangeable.
*/
@Override
boolean equals(Object object);
}