Class Assert

java.lang.Object

io.r2dbc.proxy.util.Assert

public final class Assert
extends Object

Assertion library for the implementation.

Method Summary

Modifier and Type	Method	Description
static <T> T	requireNonNull(T t, String message)	Checks that a specified object reference is not null and throws a customized IllegalArgumentException if it is.
static <T> T	requireType(Object value, Class<T> type, String message)	Checks that the specified value is of a specific type.

Methods inherited from class java.lang.Object

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

Method Details

requireNonNull

public static <T> T requireNonNull(@Nullable
 T t,
 String message)

Checks that a specified object reference is not null and throws a customized IllegalArgumentException if it is.

Type Parameters:

T - the type of the reference

Parameters:

t - the object reference to check for nullity

message - the detail message to be used in the event that an IllegalArgumentException is thrown

Returns:

t if not null

Throws:

IllegalArgumentException - if t is {code null}

requireType

public static <T> T requireType(Object value,
 Class<T> type,
 String message)

Checks that the specified value is of a specific type.

Type Parameters:

T - the type being required

Parameters:

value - the value to check

type - the type to require

message - the message to use in exception if type is not as required

Returns:

the value casted to the required type

Throws:

IllegalArgumentException - if value is not of the required type

IllegalArgumentException - if value, type, or message is null