Creating recurrance in a calendar

Question

Does anyone know the best way to create a calendar that can display the title of an event if you know the events start date and end date?
The only thing I can think of, and I've not done it yet, is to create a collection that before the header using a pl/sql block to load all the possible dates and then query off of that.
Is this going to work? Is it the only way? Is there a better way? Am I stupid??? ;)
Thanks for any help.

Answer 1

I think, I have answered this question in the past:
CREATE TABLE scheduled_classes( title VARCHAR(50), start_date DATE, weeks_count NUMBER);
INSERT INTO scheduled_classes
     VALUES ('Salsa', '01-JAN-07', 6);
INSERT INTO scheduled_classes
     VALUES ('Flamenco', '08-JAN-07', 8);
INSERT INTO scheduled_classes
     VALUES ('Cha Cha Cha', '16-FEB-07', 6);
CREATE OR REPLACE VIEW scheduled_classes_v
AS
   SELECT title, start_date, start_date + (weeks_count * 7) end_date
     FROM scheduled_classes;
CREATE OR REPLACE TYPE session_rectype AS OBJECT (
   session_date   DATE,
   title          VARCHAR2 (50)
CREATE TYPE session_table_type AS TABLE OF session_rectype;
CREATE OR REPLACE FUNCTION return_table_fn
   RETURN session_table_type
/* CREATE OR REPLACE TYPE session_rectype AS OBJECT (
   session_date   DATE,
   title          VARCHAR2 (50)
CREATE TYPE session_table_type AS TABLE OF session_rectype;
AS
   v_data     session_table_type := session_table_type ();
   v_cnt      NUMBER             DEFAULT 0;
   v_date     DATE;
   v_days     NUMBER;
   v_count1   NUMBER             := 1;
   v_count2   NUMBER             := 1;
BEGIN
   FOR c IN (SELECT start_date, end_date, title
               FROM scheduled_classes_v)
   LOOP
      v_days := c.end_date + 1 - c.start_date;
      FOR i IN v_count1 .. v_days + (v_count1 - 1)
      LOOP
         v_date := (c.start_date - 1) + v_count2;
         v_data.EXTEND;
         v_data (v_data.COUNT) := session_rectype (v_date, c.title);
         v_count1 := v_count1 + 1;
         v_count2 := v_count2 + 1;
      END LOOP;
      v_count2 := 1;
   END LOOP;
   RETURN v_data;
/* SELECT *
FROM TABLE (SELECT Return_Table_Fn() AS session_table_type
              FROM DUAL)*/
END;
/Now, running the following query will give you the result you may use in your
calendar:
SELECT session_date, title
  FROM TABLE (SELECT return_table_fn () AS session_table_type
                FROM DUAL);
SESSION_DATE TITLE
01.01.07     Salsa
02.01.07     Salsa
03.01.07     Salsa
04.01.07     Salsa
08.01.07     Flamenco
09.01.07     Flamenco
10.01.07     Flamenco
11.01.07     Flamenco
16.02.07     Cha Cha Cha
17.02.07     Cha Cha Cha
18.02.07     Cha Cha Cha
19.02.07     Cha Cha Cha
......See example here:
http://htmldb.oracle.com/pls/otn/f?p=31517:83
Denes Kubicek