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Support multiple licenses per package

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Split out package licenses into two separate tables in order to support
multiple licenses per package. The code on the package details page is
adjusted accordingly.

UPGRADING contains instructions on how to convert existing licenses in
the database to the new layout.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
This commit is contained in:
Lukas Fleischer 2014-04-26 14:40:07 +02:00
parent 38eb8d2a3a
commit 9553790cfc
5 changed files with 157 additions and 16 deletions
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33
UPGRADING
View file

@ -217,6 +217,39 @@ CREATE TABLE PackageGroups (
) ENGINE = InnoDB;
----
18. Create tables to store package licenses:
----
CREATE TABLE Licenses (
ID INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
Name VARCHAR(64) NOT NULL,
PRIMARY KEY (ID),
UNIQUE (Name)
) ENGINE = InnoDB;
CREATE TABLE PackageLicenses (
PackageID INTEGER UNSIGNED NOT NULL,
LicenseID INTEGER UNSIGNED NOT NULL,
PRIMARY KEY (PackageID, LicenseID),
FOREIGN KEY (PackageID) REFERENCES Packages(ID) ON DELETE CASCADE,
FOREIGN KEY (LicenseID) REFERENCES Licenses(ID) ON DELETE CASCADE
) ENGINE = InnoDB;
----
19. Convert existing licenses to the new storage format:
----
INSERT INTO Licenses (Name) SELECT DISTINCT License FROM Packages;
INSERT INTO PackageLicenses (PackageID, LicenseID)
SELECT Packages.ID, Licenses.ID FROM Packages
INNER JOIN Licenses ON Licenses.Name = Packages.License;
----
20. Delete the license column from the Packages table:
----
ALTER TABLE Packages DROP COLUMN License;
----
From 2.2.0 to 2.3.0
-------------------