<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>

...
<h:form binding="#{accountStatBean.form}" id="form">
        ...     
        <h:dataTable value="#{accountStatBean.accountStat.recStatList.array}" var="record"
                     binding="#{accountStatBean.statDataTable}"
                     id="statDataTable" >
         
          <h:column>
            <f:facet name="header">
              <h:outputText value="ParentId"/>
            </f:facet>
              <h:commandLink action="#{accountStatBean.viewLinkAction}">
                <h:outputText value="#{record.parentid}"/>
              </h:commandLink>
            </h:column>
          
          <h:column>
            <f:facet name="header">
              <h:outputText value="Дата"/>
            </f:facet>
            <h:outputText value="#{record.operdate}">
              <f:convertDateTime pattern="dd/MM/yyyy"/>
            </h:outputText>
          </h:column>
          ...
          <h:messages/>
      </h:form>

     public  String viewLinkAction() {
        System.out.println("viewLinkAction");
         return  "viewExtdr";
    }