check if user with specified email already exist concode_field_sep EntityManager em concode_elem_sep UserBean userBean concode_field_sep User refreshUser concode_elem_sep User updateUser concode_elem_sep void register concode_elem_sep boolean isUserExist
boolean function ( String arg0 ) { return em . createNamedQuery ( Constants . EMAIL_EXIST_QUERY ) . setParameter ( Constants . EMAIL_PARAMETER , arg0 ) . getResultList ( ) . size ( ) != 0 ; }