Quick Trick About Using Dbms_Metadata With Forms_DDL In Oracle Forms

Example is given below to fetch any Oracle objects DDL script using DBMS_Metadata.Get_DDL command in Oracle Forms using Forms_DDL command.

 

You can download this form for free including source code with following link from Google Drive Dbms_Utility.fmb

You may need to create a table in current schema/user by which you are logging with and below is the script for this:

Create Table DDL_Script (ddl varchar2(1000));

I will add further more tabs related to Dbms utility tasks to this form and will share also.

 

 

Following is the code written in Show DDL push button:

DECLARE

   v        VARCHAR2 (4000);

   objtpe   VARCHAR2 (100);

BEGIN

   --    v := dbms_metadata.get_ddl('TABLE', :objname, user);

   SELECT object_type

     INTO objtpe

     FROM user_objects

    WHERE object_name = :objname;

 

   :objtype := objtpe;

 

   FORMS_DDL ('drop table ddl_script');

   FORMS_DDL(   'create table ddl_script as select dbms_metadata.get_ddl('

             || CHR (39)

             || objtpe

             || CHR (39)

             || ','

             || CHR (39)

             || :objname

             || CHR (39)

             || ', user) ddl from dual');

 

   IF FORM_SUCCESS

   THEN

      SELECT ddl

        INTO :ddltxt

        FROM ddl_script

       WHERE ROWNUM = 1;

   ELSE

      :statbar := 'Message: Object does not exists.';

      FORMS_DDL ('create table ddl_script (ddl varchar2(1000))');

   END IF;

END;

 

Following is the code written in When-new-form-instance trigger:

 

set_window_property(forms_mdi_window, window_state, maximize);

 

DECLARE

   rg_list_id   RECORDGROUP;

   rg_name      VARCHAR2 (20) := 'OBJECTTYPES';

   ret_code     NUMBER;

   --The following holds a SELECT query from which the list elements are derived.

   v_select     VARCHAR2 (300);

BEGIN

   BEGIN

      FORMS_DDL ('drop table ddl_script');

   EXCEPTION

      WHEN OTHERS

      THEN

         NULL;

   END;

 

   BEGIN

      FORMS_DDL ('create table ddl_script (ddl varchar2(1000))');

   EXCEPTION

      WHEN OTHERS

      THEN

         NULL;

   END;

 

   ret_code := POPULATE_GROUP ('OBJECTNAMES');

   POPULATE_LIST ('OBJNAME', 'OBJECTNAMES');

END;

 

You can find the record group details itself in form which I am sharing with this post.