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## 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.
messageParams | no |  | Additional params to be used to customize message - will be evaluated against the Value Stack
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:
  $Id$
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.
`String[]` | `messageParams` Additional params to be used to customize message - will be evaluated against the Value Stack
`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:
    ""

### messageParams

    public abstract String[] messageParams

  Additional params to be used to customize message - will be evaluated against the Value Stack

  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

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