Oracle Web Application Programming for PL/SQL Developers

Solutions Specification for cookie_exists

Description: Create a function called cookie_exists. It checks for the existence of a cookie with the name passed in, using OWA_COOKIE.GET. The function returns TRUE if a value is found for a cookie with that name. It returns FALSE if there are no values stored for a cookie with that name.

Sample Code

  CREATE OR REPLACE FUNCTION cookie_exists
    (p_cookie_name IN VARCHAR2)
  RETURN BOOLEAN
  IS
--------------------------------------------------------
-- FILENAME:     cookie_exists
-- FILEDATE:     01.20.2003
-- CREATED BY:   Susan Boardman
-- DESCRIPTION:  Checks whether a cookie exists with name passed in.
-- URL        :  cookie_exists
--------------------------------------------------------
    v_cookie OWA_COOKIE.COOKIE;
  BEGIN
    v_cookie := OWA_COOKIE.GET(p_cookie_name);
    IF v_cookie.num_vals != 0 THEN
       RETURN TRUE;
    ELSE
       RETURN FALSE;
    END IF;
  END;

Select a Sample Application Code Unit

  1. main_frame (15.2)
  2. top_menu (13.3) / (15.2)
  3. splash (13.1)
  4. student_main_frame (6.3)
  5. students_left_nav (6.3)
  6. search_student (12.4)
  7. get_student (12.4)
  8. student_list (12.4)
  9. student_personal_info (12.4)
  10. student_zipcode (18.5)
  11. update_student (18.5)
  12. instruct (Package Spec and Body)
    • grade_calc (9.2)
    • v_font (9.4)
    • c_instruct_list (9.4)
    • inst_tbl_type (9.4)
    • instruct_table (9.4)
    • [PL/SQL block to load instruct_table] (9.4)
    • instruct_personal_info (11.3)
    • instructor_list_info (11.3)
    • showzip (11.3)
    • instructors_frame (11.1)
    • instructors_left_nav (11.1)
    • update_instructor (11.2)
    • instructor_list_class (11.3)
    • instruct_classes (11.3)
    • student_list (11.2)
  13. classes_main_frame (6.3)
  14. classes_left_nav (6, Building App)
  15. classes_list (6, Building App)
  16. classes_location (13.4)
  17. classes_location_update (13.4)
  18. set_cookie (15.2)
  19. get_cookie (15.2)
  20. cookie_exists (15.2)
  21. visitor_name (15.2)
  22. process_visitor_name (15.2)
  23. student_list_update (not in book)

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