Using ValueExpression's in a validator tag

[Rob Micah]

I have a component on which I need 2 validations performed. I want to execute the required validator, based on a ValueExpression, and a custom validator I've written. The problem I'm running into is that the jsf validator tags have a disabled property and although the documentation states they accept a ValueExpression, they do not. So this led me to attempt adding an attribute to my own validator that would accept a ValueExpression. Unfortunately I am not having any luck. Here's my taglib.xml
<?xml version="1.0" encoding="UTF-8"?> <facelet-taglib version="2.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd" > <namespace>http://aoc.ar.rptengine</namespace> <tag> <tag-name>validator</tag-name> <validator> <validator-id>ParamEntryValidator</validator-id> <validator-class>aoc.ar.ParamEntryValidator</validator-class> <attribute> <attribute-name>required</attribute-name> <attribute-class>javax.lang.String</attribute-class> <default-value>false</default-value> </attribute> </validator> </tag> </facelet-taglib>
So my questions are:
1. Is it possible to create a ValueExpression attribute on a custom validator tag? and
2. What do the validator property-handling methods look like?