Struts 2 - Global Validation

[arulmani shankar]

Hi,

Any idea how to do global validation in Struts 2 ?

For example, in Struts 1, I can define all global regular expression validations in a file called validation-regexpr.xml such as :

  
<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE form-validation PUBLIC
		"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN"
		"http://jakarta.apache.org/commons/dtds/validator_1_1_3.dtd">

<form-validation>
	<global>
		<constant>
			<constant-name>alpha</constant-name>
			<constant-value>[A-Za-z]*</constant-value>
		</constant>
	</global>
</form-validation>

The above global regular expressions can be reused in other validation files as follows :

 	
<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE form-validation PUBLIC
		"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.2.0//EN"
		"http://jakarta.apache.org/commons/dtds/validator_1_2_0.dtd">

<form-validation>
	<formset>
		<form name="EmployeeForm">
			<field property="EmployeeName" depends="mask">
				<msg name="mask" key="errors.invalid" />
				<arg position="0" key="label.EmployeeName" />
				<var>
					<var-name>mask</var-name>
					<var-value>${alpha}</var-value>
				</var>
			</field>
		</form>
	</formset>
</form-validation>

I could not get information on how to do this in Struts 2, no luck with the Struts2 e-books also. Any help in this regard will be greatly appreciated ....

Arul

[David Newton]

http://struts.apache.org/2.x/docs/validation.html#Validation-RegisteringValidators