Package org.apache.logging.log4j.core.config.plugins.validation.validators

Class RequiredValidator

java.lang.Object

org.apache.logging.log4j.core.config.plugins.validation.validators.RequiredValidator

All Implemented Interfaces:

ConstraintValidator<Required>

public class RequiredValidator
extends Object
implements ConstraintValidator<Required>

Validator that checks an object for emptiness. Emptiness is defined here as:

• The value null
• An object of type CharSequence with length 0
• An empty array
• An empty Collection
• An empty Map

Since:

2.1

Constructor Summary

Constructors

Constructor	Description
RequiredValidator()

Method Summary

Modifier and Type	Method	Description
void	initialize(Required anAnnotation)	Called before this validator is used with the constraint annotation value.
boolean	isValid(String name, Object value)	Indicates if the given value is valid.

Methods inherited from class java.lang.Object

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

Constructor Detail

RequiredValidator

public RequiredValidator()

Method Detail

initialize

public void initialize(Required anAnnotation)

Description copied from interface: ConstraintValidator

Called before this validator is used with the constraint annotation value.

Specified by:

initialize in interface ConstraintValidator<Required>

Parameters:

anAnnotation - the annotation value this validator will be validating.

isValid

public boolean isValid(String name,
                       Object value)

Description copied from interface: ConstraintValidator

Indicates if the given value is valid.

Specified by:

isValid in interface ConstraintValidator<Required>

Parameters:

name - the name to use for error reporting

value - the value to validate.

Returns:

true if the given value is valid.