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-rw-r--r--UPGRADING124
1 files changed, 124 insertions, 0 deletions
diff --git a/UPGRADING b/UPGRADING
index 9736ef0..a33ea63 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -18,6 +18,130 @@ ALTER TABLE PackageComments
ADD FOREIGN KEY (UsersID) REFERENCES Users(ID) ON DELETE SET NULL;
----
+3. Create the PackageBases table:
+
+----
+CREATE TABLE PackageBases (
+ ID INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
+ Name VARCHAR(64) NOT NULL,
+ CategoryID TINYINT UNSIGNED NOT NULL DEFAULT 1,
+ NumVotes INTEGER UNSIGNED NOT NULL DEFAULT 0,
+ OutOfDateTS BIGINT UNSIGNED NULL DEFAULT NULL,
+ SubmittedTS BIGINT UNSIGNED NOT NULL,
+ ModifiedTS BIGINT UNSIGNED NOT NULL,
+ SubmitterUID INTEGER UNSIGNED NULL DEFAULT NULL,
+ MaintainerUID INTEGER UNSIGNED NULL DEFAULT NULL,
+ PRIMARY KEY (ID),
+ UNIQUE (Name),
+ INDEX (CategoryID),
+ INDEX (NumVotes),
+ INDEX (SubmitterUID),
+ INDEX (MaintainerUID),
+ FOREIGN KEY (CategoryID) REFERENCES PackageCategories(ID) ON DELETE NO ACTION,
+ -- deleting a user will cause packages to be orphaned, not deleted
+ FOREIGN KEY (SubmitterUID) REFERENCES Users(ID) ON DELETE SET NULL,
+ FOREIGN KEY (MaintainerUID) REFERENCES Users(ID) ON DELETE SET NULL
+) ENGINE = InnoDB;
+----
+
+4. Migrate data from Packages to PackageBases:
+
+----
+INSERT INTO PackageBases SELECT ID, Name, CategoryID, NumVotes, OutOfDateTS,
+ SubmittedTS, ModifiedTS, SubmitterUID, MaintainerUID FROM Packages;
+----
+
+5. Delete unneeded foreign keys from Packages:
+
+First, drop the foreign keys on CategoryID, SubmitterUID and MaintainerUID. The
+following queries should work in most cases:
+
+----
+ALTER TABLE Packages
+ DROP FOREIGN KEY Packages_ibfk_1,
+ DROP FOREIGN KEY Packages_ibfk_2,
+ DROP FOREIGN KEY Packages_ibfk_3;
+----
+
+You can use `SHOW CREATE TABLE Packages;` to check whether you should use
+different names for your setup.
+
+6. Delete unneeded fields from Packages:
+
+----
+ALTER TABLE Packages
+ DROP COLUMN CategoryID,
+ DROP COLUMN NumVotes,
+ DROP COLUMN OutOfDateTS,
+ DROP COLUMN SubmittedTS,
+ DROP COLUMN ModifiedTS,
+ DROP COLUMN SubmitterUID,
+ DROP COLUMN MaintainerUID;
+----
+
+7. Add package base references to the Packages table:
+
+----
+ALTER TABLE Packages
+ ADD COLUMN PackageBaseID INTEGER UNSIGNED NULL,
+ ADD FOREIGN KEY (PackageBaseID) REFERENCES PackageBases(ID) ON DELETE CASCADE;
+UPDATE Packages SET PackageBaseID = ID;
+ALTER TABLE Packages MODIFY PackageBaseID INTEGER UNSIGNED NOT NULL;
+----
+
+8. Delete foreign keys from PackageVotes, PackageComments and CommentNotify:
+
+----
+ALTER TABLE PackageVotes
+ DROP FOREIGN KEY PackageVotes_ibfk_1,
+ DROP FOREIGN KEY PackageVotes_ibfk_2;
+ALTER TABLE PackageComments
+ DROP FOREIGN KEY PackageComments_ibfk_3;
+ALTER TABLE CommentNotify
+ DROP FOREIGN KEY CommentNotify_ibfk_1,
+ DROP FOREIGN KEY CommentNotify_ibfk_2;
+----
+
+We highly recommend to use `SHOW CREATE TABLE PackageVotes;` etc. to check
+whether you should use different names for your setup.
+
+9. Delete indexes from PackageVotes and CommentNotify:
+
+----
+ALTER TABLE PackageVotes DROP INDEX VoteUsersIDPackageID;
+ALTER TABLE CommentNotify DROP INDEX NotifyUserIDPkgID;
+----
+
+10. Migrate PackageVotes, PackageComments and CommentNotify to refer to package
+bases:
+
+----
+ALTER TABLE PackageVotes ADD COLUMN PackageBaseID INTEGER UNSIGNED NOT NULL;
+UPDATE PackageVotes SET PackageBaseID = PackageID;
+ALTER TABLE PackageVotes DROP COLUMN PackageID;
+ALTER TABLE PackageComments ADD COLUMN PackageBaseID INTEGER UNSIGNED NOT NULL;
+UPDATE PackageComments SET PackageBaseID = PackageID;
+ALTER TABLE PackageComments DROP COLUMN PackageID;
+ALTER TABLE CommentNotify ADD COLUMN PackageBaseID INTEGER UNSIGNED NOT NULL;
+UPDATE CommentNotify SET PackageBaseID = PkgID;
+ALTER TABLE CommentNotify DROP COLUMN PkgID;
+----
+
+11. Recreate missing foreign keys and indexes:
+
+----
+ALTER TABLE PackageVotes
+ ADD FOREIGN KEY (UsersID) REFERENCES Users(ID) ON DELETE CASCADE,
+ ADD FOREIGN KEY (PackageBaseID) REFERENCES PackageBases(ID) ON DELETE CASCADE;
+ALTER TABLE PackageComments
+ ADD FOREIGN KEY (PackageBaseID) REFERENCES PackageBases(ID) ON DELETE CASCADE;
+ALTER TABLE CommentNotify
+ ADD FOREIGN KEY (PackageBaseID) REFERENCES PackageBases(ID) ON DELETE CASCADE,
+ ADD FOREIGN KEY (UserID) REFERENCES Users(ID) ON DELETE CASCADE;
+CREATE UNIQUE INDEX VoteUsersIDPackageID ON PackageVotes (UsersID, PackageBaseID);
+CREATE UNIQUE INDEX NotifyUserIDPkgID ON CommentNotify (UserID, PackageBaseID);
+----
+
From 2.2.0 to 2.3.0
-------------------