Adding Custom validations in Struts 1.3 Validator

[Sameer Raza Ali]

The validator-rules.xml file in Struts 1.3. is buried inside the struts-core-1.3.x.jar file whereas in earlier versions it was included in the WEB-INF folder. Because of this new location,when creating custom validations do we have to update the struts core jar file in order to add validations to validator-rules.xml file? what was the logic behind moving this file into the jar file.
Also the new validator-rules.xml file does not contain any javascript code for client side validations does this mean that the validator no longer offers client side validations

 <validator name="required"
                   classname="org.apache.struts.validator.FieldChecks"
                   method="validateRequired"
                   methodParams="java.lang.Object,
                       org.apache.commons.validator.ValidatorAction,
                       org.apache.commons.validator.Field,
                       org.apache.struts.action.ActionMessages,
                       org.apache.commons.validator.Validator,
                       javax.servlet.http.HttpServletRequest"
                   msg="errors.required"/>