Package ch.frostnova.util.check

Interface Verify<T>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Verify<T>

Verifier interface, for check to be performed with Check.

Since:

26.05.2018.

Method Summary

Modifier and Type	Method	Description
void	check(T value)	Check the value.
static <T> Verify<T>	that(java.util.function.Predicate<? super T> test, java.lang.String message)	Create a verifier based on a predicate and message.
static <T> Verify<T>	that(java.util.function.Predicate<? super T> test, java.util.function.Function<? super T,java.lang.String> messageProducer)	Create a verifier based on a predicate and message producer.

Method Detail

check

void check(T value)
    throws java.lang.Exception

Check the value. Throw any exception (with a message) when the value does not match the criteria of this verifier.

Parameters:

value - value to check, never null

Throws:

java.lang.Exception

that

static <T> Verify<T> that(java.util.function.Predicate<? super T> test,
                          java.lang.String message)

Create a verifier based on a predicate and message. Upon checking, the predicate will be evaluated, and if it evaluates to 'false' or throws an Exception, throws an IllegalArgumentException with the given message.

Type Parameters:

T - generic value type

Parameters:

test - test to perform, required. Pass with 'true' and fail with 'false'.

message - message to return, required.

Returns:

verifier

that

static <T> Verify<T> that(java.util.function.Predicate<? super T> test,
                          java.util.function.Function<? super T,java.lang.String> messageProducer)

Create a verifier based on a predicate and message producer. Upon checking, the predicate will be evaluated, and if it evaluates to 'false' or throws an Exception, throws an IllegalArgumentException with a message produced based on the checked value.

Type Parameters:

T - generic value type

Parameters:

test - test to perform, required. Pass with 'true' and fail with 'false'.

messageProducer - message producer producing the message to return, required.

Returns:

verifier