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How to get a called procedure/function name within package?

Tomeo
Tomeo Member Posts: 303
edited Jan 11, 2013 1:46PM in SQL & PL/SQL
Hi folks,

is it possible to obtain a called procedure/function name within package?

For a measuring and tracing purpose, I would like to store an info at the beginning of each procedure/function in package with timestamp + additional details if needed.

For example:
CREATE OR REPLACE PACKAGE BODY "TEST_PACKAGE" IS
   PROCEDURE proc_1 IS
   BEGIN
      api_log.trace_data(sysdate, 'START.' || ???????);
      
      ...

      api_log.trace_data(sysdate, 'END.' || ???????);
   END;

   PROCEDURE proc_2 IS
   BEGIN
      api_log.trace_data(sysdate, 'START.' || ???????);
      
      ....
      proc_1;
      .... 

      api_log.trace_data(sysdate, 'END.' || ???????);
   END;

    
END;
I would like to replace "???????" with a function which would return a name of called procedure, so result of trace data after calling TEST_PACKAGE.proc_2 would be:
   11.1.2013 09:00:01    START.*TEST_PACKAGE.proc_2* 
   11.1.2013 09:00:01    START.*TEST_PACKAGE.proc_1*
   11.1.2013 09:00:01    END.*TEST_PACKAGE.proc_1*
   11.1.2013 09:00:01    END.*TEST_PACKAGE.proc_2*
I tried to use "dbms_utility.format_call_stack" but it did not return the name of procedure/function.

Many thanks,
Tomas

PS: I don't want to use an hardcoding
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Answers

  • odie_63
    odie_63 Member Posts: 8,439 Bronze Badge
    edited Jan 11, 2013 4:46AM
    PS: I don't want to use an hardcoding
    Why?

    Do you have such a scenario that you don't know the procedure name you're trying to compile?

    Edited by: odie_63 on 11 janv. 2013 10:45
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  • padders
    padders Member Posts: 1,055 Silver Trophy
    Simple answer is you can't - without generating some additional metadata for the package.

    One way to generate the metadata would appear to be PL/Scope in 11g but I haven't actually tried that to see how it pans out.
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  • odie_63
    odie_63 Member Posts: 8,439 Bronze Badge
    There's $$PLSQL_UNIT compiler directive but it doesn't reference subprograms in a package, only the package itself : 
    SQL> create or replace package mypck is
  2    procedure myprc;
  3  end;
  4  /
 
Package created
 
SQL> 
SQL> create or replace package body mypck is
  2    procedure myprc is
  3    begin
  4      dbms_output.put_line('I''m in '||$$PLSQL_UNIT);
  5    end;
  6  end;
  7  /
 
Package body created
 
SQL> exec mypck.myprc;
 
I'm in MYPCK
 
PL/SQL procedure successfully completed
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  • bencol
    bencol Member Posts: 894 Bronze Badge
    edited Jan 11, 2013 5:05AM
    This might help you understand the problem:
    http://tkyte.blogspot.co.uk/2009/10/httpasktomoraclecomtkytewhocalledme.html

    Buit I usually hardcode the proc name into a variable and use that for logging.
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  • Unknown
    Unknown
    edited Jan 11, 2013 1:46PM
    You've posted enough to know that you need to provide your 4 digit Oracle version (result of SELECT * FROM V$VERSION).
    >
    is it possible to obtain a called procedure/function name within package?

    For a measuring and tracing purpose, I would like to store an info at the beginning of each procedure/function in package with timestamp + additional details if needed.
    >
    I usually use this method

    1. Create a SQL type for logging information
    2. Put the package name into a constant in the package spec
    3. Add a line to each procedure/function for the name.

    Sample package spec 
    	/******************************************************************************
	 * Constants and package variables
	 ******************************************************************************/
		gc_pk_name			CONSTANT VARCHAR2(30) := 'PK_TEST';
    Sample procedure code in package 
    	 PROCEDURE P_TEST_INIT
	 IS
	   c_proc_name CONSTANT VARCHAR2(80)  := 'P_TEST_INIT';
	   v_log_info  TYPE_LOG_INFO := TYPE_LOG_INFO(gc_pk_name, c_proc_name); -- create the log type instance

	 BEGIN
		NULL; -- code goes here
	 EXCEPTION
	 WHEN ??? THEN
		v_log_info.log_code := SQLCODE;  -- add info to the log type
		v_log_info.log_message := SQLERRM;
		v_log_info.log_time    := SYSDATE;
		pk_log.p_log_error(v_log_info);
                                raise;
	 END P_PK_TEST_INIT;
    Sample SQL type 
    DROP TYPE TYPE_LOG_INFO;

CREATE OR REPLACE TYPE TYPE_LOG_INFO AUTHID DEFINER AS OBJECT (
/* *****************************************************************************
 *  NAME:      TYPE_LOG_INFO
 *  PURPOSE:   Holds info used by PK_LOG package to log errors.
 *
 *             Using a TYPE instance keeps the procedures and functions
 *             independent of the logging mechanism.
 *
 *             If new logging features are needed a SUB TYPE can be derived
 *             from this base type to add the new functionality without
 *             breaking any existing code.
 *
 *  REVISIONS:
 *  Ver        Date        Author           Description
 *
 *   1.00      mm/dd/yyyy  me               Initial Version.
 ******************************************************************************/
    PACKAGE_NAME  VARCHAR2(80),
    PROC_NAME     VARCHAR2(80),
    STEP_NUMBER   NUMBER,
    LOG_LEVEL   VARCHAR2(10),
    LOG_CODE    NUMBER,
    LOG_MESSAGE VARCHAR2(1024),
    LOG_TIME    TIMESTAMP,
    CONSTRUCTOR FUNCTION type_log_info (p_package_name IN VARCHAR2 DEFAULT 'Uninitialized',
                                        p_proc_name IN VARCHAR2 DEFAULT 'Uninitialized',
                                        p_step_number IN NUMBER DEFAULT 1,
                                        p_LOG_level IN VARCHAR2 DEFAULT 'Uninit',
                                        p_LOG_code IN NUMBER DEFAULT -1,
                                        p_LOG_message IN VARCHAR2 DEFAULT 'Uninitialized',
                                        p_LOG_time IN DATE DEFAULT SYSDATE)
                RETURN SELF AS RESULT
  ) NOT FINAL;
/

DROP TYPE BODY TYPE_LOG_INFO;

CREATE OR REPLACE TYPE BODY TYPE_LOG_INFO IS
    CONSTRUCTOR FUNCTION type_log_info (p_package_name IN VARCHAR2 DEFAULT 'Uninitialized',
                                        p_proc_name IN VARCHAR2 DEFAULT 'Uninitialized',
                                        p_step_number IN NUMBER DEFAULT 1,
                                        p_LOG_level IN VARCHAR2 DEFAULT 'Uninit',
                                        p_LOG_code IN NUMBER DEFAULT -1,
                                        p_LOG_message IN VARCHAR2 DEFAULT 'Uninitialized',
                                        p_LOG_time IN DATE DEFAULT SYSDATE)
     RETURN SELF AS RESULT IS
    BEGIN
      self.package_name  := p_package_name;
      self.proc_name     := p_proc_name;
      self.step_number   := p_step_number;
      self.LOG_level   := p_LOG_level;
      self.LOG_code    := p_LOG_code;
      self.LOG_message := p_LOG_message;
      self.LOG_time    := p_LOG_time;
      RETURN;
    END;
END;
/
SHO ERR
    Edited by: rp0428 on Jan 11, 2013 10:35 AM after 1st cup of coffee ;)
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  • odie_63
    odie_63 Member Posts: 8,439 Bronze Badge
    rp0428 wrote:
    You would want the $$PLSQL_UNIT directive.
    And as shown in my post, this doesn't apply to subprograms in a package, which seems to be precisely what OP is after.
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  • Unknown
    Unknown
    edited Jan 11, 2013 1:45PM
    Thanks - brain f*** - didn't even see your post somehow. I update my post with the old method.
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This discussion has been closed.