ConstraintViolationExceptionMapper (org.kiwiproject:kiwi 1.2.1 API)

java.lang.Object
- org.kiwiproject.jaxrs.exception.ConstraintViolationExceptionMapper

All Implemented Interfaces:

javax.ws.rs.ext.ExceptionMapper<javax.validation.ConstraintViolationException>
```
@Provider
public class ConstraintViolationExceptionMapper
extends Object
implements javax.ws.rs.ext.ExceptionMapper<javax.validation.ConstraintViolationException>
```
Map ConstraintViolationException to a JSON Response.
The mapped response has status code 422 Unprocessable Entity, which technically falls under the WebDAV extensions. See the Mozilla page on 422 Unprocessable Entity here. But in reality, many web frameworks use 422 to indicate an input validation failure, which is how we are using it here.
It is important to note that the Response.Status does not contain an enum constant for 422 status, so that Response.Status.fromStatusCode(int) will return null when given 422.

Constructor Summary

Constructors
Constructor Description

ConstraintViolationExceptionMapper()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static javax.ws.rs.core.Response`	`buildResponse(Set<? extends javax.validation.ConstraintViolation<?>> violations)`	Given a set of constraint violations, build a 422 Unprocessable Entity response with a JSON entity.
`javax.ws.rs.core.Response`	`toResponse(javax.validation.ConstraintViolationException exception)`	Convert the given `ConstraintViolationException` to a response containing a JSON entity.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ConstraintViolationExceptionMapper
```
public ConstraintViolationExceptionMapper()
```
- Method Detail
  - toResponse
```
public javax.ws.rs.core.Response toResponse(javax.validation.ConstraintViolationException exception)
```
    Convert the given ConstraintViolationException to a response containing a JSON entity.
    
    Specified by:
    
    toResponse in interface javax.ws.rs.ext.ExceptionMapper<javax.validation.ConstraintViolationException>
    
    Parameters:
    
    exception - the exception to convert
    
    Returns:
    
    a response
    
    See Also:
    
    JaxrsExceptionMapper.buildResponse(JaxrsException)
  - buildResponse
```
public static javax.ws.rs.core.Response buildResponse(Set<? extends javax.validation.ConstraintViolation<?>> violations)
```
    Given a set of constraint violations, build a 422 Unprocessable Entity response with a JSON entity.
    
    Parameters:
    
    violations - the constraint violations to convert
    
    Returns:
    
    a JSON response