question: public void createEntityConfig ( String realm , FederationConfigElement config ) throws WSFederationMetaException { String federationId = config . getFederationID ( ) ; if ( federationId == null ) { debug . error ( "WSFederationMetaManager.createEntityConfig: " + "entity ID is null" ) ; String [ ] data = { realm } ; LogUtil . error ( Level . INFO , LogUtil . NO_ENTITY_ID_CREATE_ENTITY_CONFIG , data , null ) ; throw new WSFederationMetaException ( "empty_entityid" , null ) ; } if ( realm == null ) { realm = "/" ; } String [ ] objs = { federationId , realm } ; try { Map attrs = WSFederationMetaUtils . convertJAXBToAttrMap ( ATTR_ENTITY_CONFIG , config ) ; Map oldAttrs = configInst . getConfiguration ( realm , federationId ) ; if ( oldAttrs == null ) { LogUtil . error ( Level . INFO , LogUtil . NO_ENTITY_DESCRIPTOR_CREATE_ENTITY_CONFIG , objs , null ) ; throw new WSFederationMetaException ( "entity_descriptor_not_exist" , objs ) ; } Set oldValues = ( Set ) oldAttrs . get ( ATTR_ENTITY_CONFIG ) ; if ( oldValues != null && ! oldValues . isEmpty ( ) ) { LogUtil . error ( Level . INFO , LogUtil . ENTITY_CONFIG_EXISTS , objs , null ) ; throw new WSFederationMetaException ( "entity_config_exists" , objs ) ; } configInst . setConfiguration ( realm , federationId , attrs ) ; LogUtil . access ( Level . INFO , LogUtil . ENTITY_CONFIG_CREATED , objs , null ) ; SPSSOConfigElement spconfig = getSPSSOConfig ( realm , federationId ) ; if ( spconfig != null ) { addToCircleOfTrust ( spconfig , realm , federationId ) ; } IDPSSOConfigElement idpconfig = getIDPSSOConfig ( realm , federationId ) ; if ( idpconfig != null ) { addToCircleOfTrust ( idpconfig , realm , federationId ) ; } } catch ( ConfigurationException e ) { debug . error ( "WSFederationMetaManager.createEntityConfig:" , e ) ; String [ ] data = { e . getMessage ( ) , federationId , realm } ; LogUtil . error ( Level . INFO , LogUtil . CONFIG_ERROR_CREATE_ENTITY_CONFIG , data , null ) ; throw new WSFederationMetaException ( e ) ; } catch ( JAXBException jaxbe ) { debug . error ( "WSFederationMetaManager.createEntityConfig:" , jaxbe ) ; LogUtil . error ( Level . INFO , LogUtil . CREATE_INVALID_ENTITY_CONFIG , objs , null ) ; throw new WSFederationMetaException ( "invalid_config" , objs ) ; } }
target:  Creates the extended entity configuration under the realm.