<extension
         point="org.eclipse.emf.validation.constraintProviders">
      <category
            id="myCategory"
            mandatory="false"
            name="Non Empty Reference"/>
      <constraintProvider
            cache="true"
            mode="Live">
         <package namespaceUri="http://myNamespace"/>
         <constraints categories="myCategory">
            <constraint
                  class="NonEmptyReferenceConstraint"
                  id="ReferenceNotEmpty"
                  isEnabledByDefault="true"
                  lang="Java"
                  mode="Live"
                  name="Non Empty References"
                  severity="ERROR"
                  statusCode="1">
               <description>
                  All items in an EXT library model should have some unique identifier or name.
               </description>
               <message>
                  ..been found to have no unique identifier (name or title).
               </message>
            </constraint>
         </constraints>
      </constraintProvider>
   </extension>
   <extension
         point="org.eclipse.emf.validation.constraintBindings">
      <clientContext
            default="false"
            id="referenceContext">
         <selector class="ValidationDelegateClientSelector"/>
      </clientContext>
      <binding
            context="referenceContext"
            category="myCategory"/>
   </extension>

IBatchValidator validator = ModelValidationService.getInstance().newValidator(EvaluationMode.BATCH);
validator.setIncludeLiveConstraints(true);