You can get the calls to procedures within a package with PL/Scope, starting with:
alter session set plscope_settings = 'IDENTIFIERS:ALL';
If you then recompile your package, here using a simple outline based on your description:
create or replace package p42 as
procedure a;
procedure b;
procedure c;
procedure d;
function f return number;
end p42;
/
create or replace package body p42 as
procedure a is
begin
b;
c;
end a;
procedure b is
n number;
begin
n := f;
end b;
procedure c is
n number;
begin
n := f;
end c;
procedure d is
begin
null;
end d;
function f return number is
begin
return 42;
end f;
end p42;
/
then you can see the various references in the user_identifiers view. Using the example from the documentation to get an outline:
WITH v AS (
SELECT Line,
Col,
INITCAP(NAME) Name,
LOWER(TYPE) Type,
LOWER(USAGE) Usage,
USAGE_ID,
USAGE_CONTEXT_ID
FROM USER_IDENTIFIERS
WHERE Object_Name = 'P42'
AND Object_Type = 'PACKAGE BODY'
)
SELECT RPAD(LPAD(' ', 2*(Level-1)) ||
Name, 20, '.')||' '||
RPAD(Type, 20)||
RPAD(Usage, 20)
IDENTIFIER_USAGE_CONTEXTS
FROM v
START WITH USAGE_CONTEXT_ID = 0
CONNECT BY PRIOR USAGE_ID = USAGE_CONTEXT_ID
ORDER SIBLINGS BY Line, Col
/
IDENTIFIER_USAGE_CONTEXTS
-------------------------------------------------------------
P42................. package definition
A................. procedure definition
B............... procedure call
C............... procedure call
B................. procedure definition
N............... variable declaration
Number........ number datatype reference
N............... variable assignment
F............. function call
C................. procedure definition
N............... variable declaration
Number........ number datatype reference
N............... variable assignment
F............. function call
D................. procedure definition
F................. function definition
Number.......... number datatype reference
To get something closer to what you want you still need a hierarchical query to find the name of each procedure/function that calls another, since you aren't interested in (for example) the assignment steps, just where those happened.
As a starting point you could do:
select *
from (
select name, type, connect_by_root(name) as root_name,
connect_by_root(type) as root_type, connect_by_isleaf as isleaf
from user_identifiers
start with object_type = 'PACKAGE BODY'
and object_name = 'P42'
and type in ('FUNCTION', 'PROCEDURE')
and usage = 'DEFINITION'
connect by object_type = prior object_type
and object_name = prior object_name
and usage_context_id = prior usage_id
)
where type in ('FUNCTION', 'PROCEDURE');
NAME TYPE ROOT_NAME ROOT_TYPE ISLEAF
---- ------------------ --------- --------- ----------
A PROCEDURE A PROCEDURE 0
B PROCEDURE A PROCEDURE 1
C PROCEDURE A PROCEDURE 1
B PROCEDURE B PROCEDURE 0
F FUNCTION B PROCEDURE 1
C PROCEDURE C PROCEDURE 0
F FUNCTION C PROCEDURE 1
D PROCEDURE D PROCEDURE 1
F FUNCTION F FUNCTION 0
then filter the leaf nodes and combine the callers:
select root_name, root_type,
listagg(case when name = root_name then null else name end, ', ')
within group (order by name) as callers
from (
select name, type, connect_by_root(name) as root_name,
connect_by_root(type) as root_type, connect_by_isleaf as isleaf
from user_identifiers
start with object_type = 'PACKAGE BODY'
and object_name = 'P42'
and type in ('FUNCTION', 'PROCEDURE')
and usage = 'DEFINITION'
connect by object_type = prior object_type
and object_name = prior object_name
and usage_context_id = prior usage_id
)
where type in ('FUNCTION', 'PROCEDURE')
and isleaf = 1
group by root_name, root_type;
ROOT_NAME ROOT_TYPE CALLERS
--------- --------- --------------------
A PROCEDURE B, C
B PROCEDURE F
C PROCEDURE F
D PROCEDURE
But that doesn't show F; you can add an outer join to get that:
with ui as (
select * from user_identifiers
where object_type = 'PACKAGE BODY'
and object_name = 'P42'
),
calls as (
select object_type, object_name, name, type, signature,
connect_by_root(name) as root_name,
connect_by_root(type) as root_type,
connect_by_root(signature) as root_signature,
connect_by_isleaf as isleaf
from ui
start with type in ('FUNCTION', 'PROCEDURE')
and usage = 'DEFINITION'
connect by usage_context_id = prior usage_id
and prior usage != 'CALL'
)
select ui.name, ui.type,
listagg(case when c.name = c.root_name then null else c.name end, ', ')
within group (order by c.name) as callers
from ui
left join calls c on c.object_type = ui.object_type
and c.object_name = ui.object_name
and c.root_type = ui.type
and c.root_name = ui.name
and c.root_signature = ui.signature
and c.type in ('FUNCTION', 'PROCEDURE')
and c.isleaf = 1
where ui.type in ('FUNCTION', 'PROCEDURE')
and ui.usage = 'DEFINITION'
group by ui.name, ui.type;
NAME TYPE CALLERS
---- ------------------ --------------------
A PROCEDURE B, C
B PROCEDURE F
C PROCEDURE F
D PROCEDURE
F FUNCTION
I'm pretty sure that can be simplified...
Getting the main/slave/independent flag is a bit trickier; you need to decide what each of those means (e.g. main has calls going out but no calls coming in; independent has no calls in or out; slave everything else) possibly with further joins to figure things out.
So this is a starting point that gets you some of the information and hopefully points to things to explore to get all the information you need, in the format you need it.
