Group Validations inside data table

[vaithee sub]

How do I perform Group Validations in h:datatable using custom Validators
For instance lets say I have a data table containing one column containing values of States (NY,NJ...).
In my custom Validator, I want to ensure that the state code does not repeat in any of the rows.

In the validator how do I get the ids for all the state codes to find the value in each of the component?

<h:dataTable id="tableEx1" value="#{careerDisplayBean.stateBarAdmissions}"
var="varstateBarAdmissions">
<h:column>
<h:inputText value="varstateBarAdmissions.stateCode" id="cd">
<h:validator validatorID="stateCodeValidator"/>
</h:inputText
</h:column
</h:dataTable