RequiredValidator

java.lang.Object
- org.apache.logging.log4j.core.config.plugins.validation.validators.RequiredValidator

All Implemented Interfaces:

ConstraintValidator<Required>
```
public class RequiredValidator
extends java.lang.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

Field Summary

Fields
Modifier and Type Field Description

private Required annotation

private static Logger LOGGER

Constructor Summary

Constructors
Constructor Description

RequiredValidator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private boolean`	`err(java.lang.String name)`
`void`	`initialize(Required anAnnotation)`	Called before this validator is used with the constraint annotation value.
`boolean`	`isValid(java.lang.String name, java.lang.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

- Field Detail
  - LOGGER
```
private static final Logger LOGGER
```
  - annotation
```
private Required annotation
```
- 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(java.lang.String name,
                       java.lang.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.
  - err
```
private boolean err(java.lang.String name)
```