com.maryanovsky.gwtutils.client
Class Condition<T>

java.lang.Object
  com.maryanovsky.gwtutils.client.Condition<T>

public abstract class Condition<T>
extends Object

A boolean condition.

Author:

Maryanovsky Alexander

Constructor Summary

Condition()

Method Summary

Condition<T>	and(Condition<? super T> cond) Returns the logical-AND of this condition and the specified one.
static <T> Condition<T>	and(Condition<? super T> cond1, Condition<? super T> cond2) Returns the logical-AND of the specified conditions.
static <T> Condition<T>	and(Condition<? super T> cond1, Condition<? super T> cond2, Condition<? super T> cond3) Returns the logical-AND of the specified conditions.
static <T> Condition<T>	and(Condition<? super T> cond1, Condition<? super T> cond2, Condition<? super T> cond3, Condition<? super T> cond4) Returns the logical-AND of the specified conditions.
<S extends T> Condition<S>	cast() Casts this condition to a condition parameterized with a subtype of T.
static <T> Condition<T>	cast(Condition<? super T> condition) Casts a condition parameterized with a supertype of T to a condition parameterized with T.
abstract boolean	eval(T argument) Returns the value of the condition based on the specified argument.
static <T> Condition<T>	falsehood() The always-false condition.
Condition<T>	not() Returns the logical inverse of this condition.
static <T> Condition<T>	not(Condition<? super T> condition) Returns the logical inverse of the specified condition.
Condition<T>	or(Condition<? super T> cond) Returns the logical-OR of this condition and the specified one.
static <T> Condition<T>	or(Condition<? super T> cond1, Condition<? super T> cond2) Returns the logical-OR of the specified conditions.
static <T> Condition<T>	or(Condition<? super T> cond1, Condition<? super T> cond2, Condition<? super T> cond3) Returns the logical-OR of the specified conditions.
static <T> Condition<T>	or(Condition<? super T> cond1, Condition<? super T> cond2, Condition<? super T> cond3, Condition<? super T> cond4) Returns the logical-OR of the specified conditions.
static <T> Condition<T>	truth() The always-true condition.

Methods inherited from class java.lang.Object

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

Constructor Detail

Condition

public Condition()

Method Detail

truth

public static <T> Condition<T> truth()

The always-true condition.

falsehood

public static <T> Condition<T> falsehood()

The always-false condition.

and

public Condition<T> and(Condition<? super T> cond)

Returns the logical-AND of this condition and the specified one. Note that the evaluation of the conditions is short-circuited in the standard way and that this condition is evaluated first.

and

public static <T> Condition<T> and(Condition<? super T> cond1,
                                   Condition<? super T> cond2)

Returns the logical-AND of the specified conditions. Note that the evaluation of the conditions is short-circuited in the standard way.

and

public static <T> Condition<T> and(Condition<? super T> cond1,
                                   Condition<? super T> cond2,
                                   Condition<? super T> cond3)

Returns the logical-AND of the specified conditions. Note that the evaluation of the conditions is short-circuited in the standard way.

and

public static <T> Condition<T> and(Condition<? super T> cond1,
                                   Condition<? super T> cond2,
                                   Condition<? super T> cond3,
                                   Condition<? super T> cond4)

Returns the logical-AND of the specified conditions. Note that the evaluation of the conditions is short-circuited in the standard way.

or

public Condition<T> or(Condition<? super T> cond)

Returns the logical-OR of this condition and the specified one. Note that the evaluation of the conditions is short-circuited in the standard way and that this condition is evaluated first.

or

public static <T> Condition<T> or(Condition<? super T> cond1,
                                  Condition<? super T> cond2)

Returns the logical-OR of the specified conditions. Note that the evaluation of the conditions is short-circuited in the standard way.

or

public static <T> Condition<T> or(Condition<? super T> cond1,
                                  Condition<? super T> cond2,
                                  Condition<? super T> cond3)

Returns the logical-OR of the specified conditions. Note that the evaluation of the conditions is short-circuited in the standard way.

or

public static <T> Condition<T> or(Condition<? super T> cond1,
                                  Condition<? super T> cond2,
                                  Condition<? super T> cond3,
                                  Condition<? super T> cond4)

Returns the logical-OR of the specified conditions. Note that the evaluation of the conditions is short-circuited in the standard way.

not

public Condition<T> not()

Returns the logical inverse of this condition.

not

public static <T> Condition<T> not(Condition<? super T> condition)

Returns the logical inverse of the specified condition.

cast

public static <T> Condition<T> cast(Condition<? super T> condition)

Casts a condition parameterized with a supertype of T to a condition parameterized with T. This is legal, as a condition that evaluates an argument of a certain type can always evaluate an argument of its subtype.

cast

public <S extends T> Condition<S> cast()

Casts this condition to a condition parameterized with a subtype of T. This is legal as a condition can always be evaluated with a subtype of T.

eval

public abstract boolean eval(T argument)

Returns the value of the condition based on the specified argument.