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

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

This validator uses an OGNL expression to perform its validator. The error message will be added to the field if the expression returns false when it is evaluated against the value stack.

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.
expression	yes		An OGNL expression that returns a boolean value.

Example code:

 
 @FieldExpressionValidator(message = "Default message", key = "i18n.key", shortCircuit = true, expression = "an OGNL expression")
 
 

Version:

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

Author:

Rainer Hermanns

Required Element Summary

String

expression An OGNL expression that returns a boolean value.

Optional Element Summary

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.

Element Detail

expression

public abstract String expression

An OGNL expression that returns a boolean value.

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