org.richfaces.fragment.common

Class Validate

java.lang.Object

org.richfaces.fragment.common.Validate

public final class Validate
extends Object

Author:

Lukas Fryc

Method Summary

Methods

Modifier and Type	Method and Description
static void	isTrue(boolean expression, String message, Object... messageArguments) Validate that the argument condition is true; otherwise throwing an exception with the specified message.

Methods inherited from class java.lang.Object

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

Method Detail

isTrue

public static void isTrue(boolean expression,
          String message,
          Object... messageArguments)

Validate that the argument condition is true; otherwise throwing an exception with the specified message. This method is useful when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

Validate.isTrue(i > 0.0, "The value must be greater than zero: %d", i);

For performance reasons, the long value is passed as a separate parameter and appended to the exception message only in the case of an error.

Parameters:

expression - the boolean expression to check

message - the String.format(String, Object...) exception message if invalid, not null

messageArguments - the arguments for formatting the message when invalid

Throws:

IllegalArgumentException - if expression is false