--
-- database_schema_11-12.sql
--
-- Version: $Revision$
--
-- Date:    $Date$
--
-- Copyright (c) 2002, Hewlett-Packard Company and Massachusetts
-- Institute of Technology.  All rights reserved.
-- 
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are
-- met:
-- 
-- - Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- 
-- - Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
-- 
-- - Neither the name of the Hewlett-Packard Company nor the name of the
-- Massachusetts Institute of Technology nor the names of their
-- contributors may be used to endorse or promote products derived from
-- this software without specific prior written permission.
-- 
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-- HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-- BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-- OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-- TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
-- USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-- DAMAGE.

--
-- SQL commands to upgrade the database schema of a live DSpace 1.1 or 1.1.1
-- to the DSpace 1.2 database schema
-- 
-- DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. 
-- DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. 
-- DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. DUMP YOUR DATABASE FIRST. 

CREATE SEQUENCE community2community_seq;
CREATE SEQUENCE communities2item_seq;

ALTER TABLE Bitstream ADD sequence_id INTEGER;

ALTER TABLE Item ADD owning_collection INTEGER;

-- The following changes the last_modified column from a TIMESTAMP to a
-- TIMESTAMP WITH TIME ZONE.  It copies over existing values of last_modified.
-- 
-- CAUTION:  This assumes that the values of the original 'last_modified'
-- column were in the *local time zone*.
--
-- If you find that the original values in 'last_modified' are in *UTC*,
-- (and this is not your local time zone), you will need to convert the
-- values of your last_modified column to your local time zone in order
-- for the following code to work.

ALTER TABLE Item ADD COLUMN last_modified2 TIMESTAMP WITH TIME ZONE;
UPDATE Item SET last_modified2 = last_modified;
ALTER TABLE Item DROP COLUMN last_modified;
ALTER TABLE Item RENAME last_modified2 TO last_modified;

ALTER TABLE Bundle ADD name VARCHAR(16);
ALTER TABLE Bundle ADD primary_bitstream_id INTEGER;
ALTER TABLE Bundle ADD CONSTRAINT primary_bitstream_id_fk FOREIGN KEY (primary_bitstream_id) REFERENCES Bitstream(bitstream_id);
CREATE TABLE Community2Community
(
  id             INTEGER PRIMARY KEY,
  parent_comm_id INTEGER REFERENCES Community(community_id),
  child_comm_id  INTEGER REFERENCES Community(community_id)
);

CREATE TABLE Communities2Item
(
   id                      INTEGER PRIMARY KEY,
   community_id            INTEGER REFERENCES Community(community_id),
   item_id                 INTEGER REFERENCES Item(item_id)
);

DROP VIEW CommunityItemsByAuthor;
CREATE VIEW CommunityItemsByAuthor as
SELECT Communities2Item.community_id, ItemsByAuthor.* 
FROM ItemsByAuthor, Communities2Item
WHERE ItemsByAuthor.item_id = Communities2Item.item_id
;

DROP VIEW CommunityItemsByTitle;
CREATE VIEW CommunityItemsByTitle as
SELECT Communities2Item.community_id, ItemsByTitle.* 
FROM ItemsByTitle, Communities2Item
WHERE ItemsByTitle.item_id = Communities2Item.item_id
;

DROP VIEW CommunityItemsByDate;
CREATE VIEW CommunityItemsByDate as
SELECT Communities2Item.community_id, ItemsByDate.* 
FROM ItemsByDate, Communities2Item
WHERE ItemsByDate.item_id = Communities2Item.item_id
;

DROP VIEW CommunityItemsByDateAccession;
CREATE VIEW CommunityItemsByDateAccession as
SELECT Communities2Item.community_id, ItemsByDateAccessioned.* 
FROM ItemsByDateAccessioned, Communities2Item
WHERE ItemsByDateAccessioned.item_id = Communities2Item.item_id
;