com.opensymphony.xwork2.validator.annotations
Annotation Type VisitorFieldValidator

@Target(value=METHOD)
@Retention(value=RUNTIME)
public @interface VisitorFieldValidator

The validator allows you to forward validator to object properties of your action using the objects own validator files. This allows you to use the ModelDriven development pattern and manage your validations for your models in one place, where they belong, next to your model classes. The VisitorFieldValidator can handle either simple Object properties, Collections of Objects, or Arrays. The error message for the VisitorFieldValidator will be appended in front of validator messages added by the validations for the Object message.

Annotation usage:

The annotation must be applied at method level.

Annotation parameters:

Parameter	Required	Default	Notes
message	yes		field error message
key	no		i18n key from language specific properties file.
fieldName	no
shortCircuit	no	false	If this validator should be used as shortCircuit.
context	no	action alias	Determines the context to use for validating the Object property. If not defined, the context of the Action validation is propogated to the Object property validation. In the case of Action validation, this context is the Action alias.
appendPrefix	no	true	Determines whether the field name of this field validator should be prepended to the field name of the visited field to determine the full field name when an error occurs. For example, suppose that the bean being validated has a "name" property. If appendPrefix is true, then the field error will be stored under the field "bean.name". If appendPrefix is false, then the field error will be stored under the field "name". If you are using the VisitorFieldValidator to validate the model from a ModelDriven Action, you should set appendPrefix to false unless you are using "model.name" to reference the properties on your model.

Example code:

 
 @VisitorFieldValidator(message = "Default message", key = "i18n.key", shortCircuit = true, context = "action alias", appendPrefix = true)
 
 

Version:

$Id: VisitorFieldValidator.java 1834 2008-06-21 12:09:59Z rainerh $

Author:

Rainer Hermanns

Optional Element Summary

boolean	appendPrefix Determines whether the field name of this field validator should be prepended to the field name of the visited field to determine the full field name when an error occurs.
String	context Determines the context to use for validating the Object property.
String	fieldName The optional fieldName for SIMPLE validator types.
String	key The message key to lookup for i18n.
String	message The default error message for this validator.
boolean	shortCircuit If this is activated, the validator will be used as short-circuit.

context

public abstract String context

Determines the context to use for validating the Object property. If not defined, the context of the Action validator is propogated to the Object property validator. In the case of Action validator, this context is the Action alias.

Default:

""

appendPrefix

public abstract boolean appendPrefix

Determines whether the field name of this field validator should be prepended to the field name of the visited field to determine the full field name when an error occurs. For example, suppose that the bean being validated has a "name" property. If appendPrefix is true, then the field error will be stored under the field "bean.name". If appendPrefix is false, then the field error will be stored under the field "name". If you are using the VisitorFieldValidator to validate the model from a ModelDriven Action, you should set appendPrefix to false unless you are using "model.name" to reference the properties on your model.

Default:

true

message

public abstract String message

The default error message for this validator. NOTE: It is required to set a message, if you are not using the message key for 18n lookup!

Default:

""

key

public abstract String key

The message key to lookup for i18n.

Default:

""

fieldName

public abstract String fieldName

The optional fieldName for SIMPLE validator types.

Default:

""

shortCircuit

public abstract boolean shortCircuit

If this is activated, the validator will be used as short-circuit. Adds the short-circuit="true" attribute value if true.

Default:

false