如何使用JPA 2在存储过程中将复杂对象数组作为IN参数传递

Question

I am trying to call an Oracle stored procedure

create or replace 
  procedure save_item (
                            item_arr__p in     complex_list__t,
                            status__p           out varchar2,
                            status_message__p   out varchar2) is
...
begin
...
end

And the complex_list__t type is defined like this:

create or replace 
type complex_list__t is table of simple_list__t

And the simple_list__t type is defined like this:

create or replace 
type simple_list__t  is table of varchar2(2000)

I want to call this procedure using JPA 2. I am not sure that JPA supports arrays as parameters. I would like to be able to do this:

StoredProcedureQuery query = em.createNamedStoredProcedureQuery("pkg_api_wd_item.save_item");
query.registerStoredProcedureParameter("item_arr__p", MyComplexObject[].class, ParameterMode.IN);
query.registerStoredProcedureParameter("status__p", String.class, ParameterMode.OUT);
query.registerStoredProcedureParameter("status_message__p", String.class, ParameterMode.OUT);

query.setParameter("item_arr__p", myobjects);
query.execute();

String status = (String) query.getOutputParameterValue("status__p");
String message = (String) query.getOutputParameterValue("status_message__p");

I really would like to use JPA as I want my application to be agnostic (no oracle dependencies).

If it is not supported by JPA, Can I instead use a CLOB parameter instead of my array?

Answer 1

You might try passing a

List<MyComplexObject> 

instead of an array of them. If that doesn't work, you might try

List<List<String>>

instead of either.