run a block of code in a jpa transaction . concode_field_sep JPAApi jpaApi concode_elem_sep JPAConfig jpaConfig concode_elem_sep JPAEntityManagerContext entityManagerContext concode_elem_sep Map<String,EntityManagerFactory> emfs concode_field_sep JPAApi get concode_elem_sep JPAApi start concode_elem_sep EntityManager em concode_elem_sep EntityManager em concode_elem_sep void shutdown
T function ( String arg0 , boolean arg1 , Supplier < T > arg2 ) { return withTransaction ( arg0 , arg1 , entityManager -> { return arg2 . get ( ) ; } ) ; }