Page Comparison

<!-- retain SPs only but don’t remove “roleless” entity descriptors -->
<MetadataFilter xsi:type="EntityRoleWhiteList" removeRolelessEntityDescriptors="false" xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata">
    <RetainedRole>md:SPSSODescriptor</RetainedRole>
</MetadataFilter>

<!-- clean up the mess made by the EntityRoleWhiteList filter -->
<MetadataFilter xsi:type="Predicate" direction="exclude" removeEmptyEntitiesDescriptors="true">
    <ConditionScript>
        <Script>
        <![CDATA[
            // an implementation of Predicate<EntityDescriptor>
            // invoke a boolean function expression on the input parameter
            // if the predicate function returns true, the entity descriptor
            // is excluded from the output (since direction="exclude").
            //
            // the input argument is of type:
            // org.opensaml.saml.saml2.metadata.EntityDescriptor
            //
            (function (entity) {
                "use strict";

                // check the parameter
          (entityDescriptor      if (entity === null) { return false; }

                // preserve an affiliation descriptorsdescriptor
                if (entityDescriptorentity.getAffiliationDescriptor() !== null) { return false; }

                 // exclude a “roleless”"roleless" entity descriptorsdescriptor
                return entityDescriptorentity.getRoleDescriptors() === null;
            }(input));
        ]]>
        </Script>
    </ConditionScript>
</MetadataFilter>