Defining mask globally

hi

I wish to define the global regex for masks in a common file. For example ,
name field mask will be like ^[a-zA-Z]+$.

<h:inputText id="nameame" styleClass="inputText"
                   value="#{BrokerRepresentative.name}" size="20">
                   <val:commonsValidator type="mask" arg="Company Name"
server="true"
                       client="false">
                       <val:validatorVar name="mask" value="^[a-zA-Z]+$" />
                   </val:commonsValidator>
               </h:inputText>

I wish to replace this with something like

<f:loadBundle basename="globalmasks" val="globalmask"/>

<h:inputText id="nameame" styleClass="inputText"
                   value="#{BrokerRepresentative.name}" size="20">
                   <val:commonsValidator type="mask" arg="Company Name"
server="true"
                       client="false">
                       <val:validatorVar name="mask" value="#{
globalmask.name}" />
                   </val:commonsValidator>
               </h:inputText>

This will enable me to validate the name field in a uniform way through out
my application. Also if any change is need in regex then it needs to applied
in one place.  When I tried this solution  I got


java.lang.NullPointerException
        
org.apache.shale.validator.CommonsValidator.convert(CommonsValidator.java:954)
        
org.apache.shale.validator.CommonsValidator.loadMethodParamValues(CommonsValidator.java:715)
        
org.apache.shale.validator.CommonsValidator.validate(CommonsValidator.java:793)
        javax.faces.component.UIInput.validateValue(UIInput.java:781)
        javax.faces.component.UIInput.validate(UIInput.java:645)
        javax.faces.component.UIInput.executeValidate(UIInput.java:849)
        javax.faces.component.UIInput.processValidators(UIInput.java:412)
        
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:912)
        javax.faces.component.UIForm.processValidators(UIForm.java:170)
        
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:912)
        
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:912)
        javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:342)
        
com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:78)
        com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
        com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
        javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)



Any help /commens/ pointers appreciated to resolve this problem.  I open to
different solution too.


Thanks,
sanjay