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Triggers to handle renaming of collections/entries on user rename.

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This commit is contained in:
Andrew McMillan 2009-04-15 15:41:37 +12:00
parent f9d4266153
commit bd279e519e
1 changed files with 36 additions and 18 deletions
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54
dba/caldav_functions.sql
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@ -376,30 +376,48 @@ BEGIN
END; END;
' LANGUAGE 'plpgsql'; ' LANGUAGE 'plpgsql';
DROP FUNCTION rename_davical_user( TEXT, TEXT );
CREATE or REPLACE FUNCTION rename_davical_user( TEXT, TEXT ) RETURNS TEXT AS $$ DROP TRIGGER usr_modified ON usr CASCADE;
CREATE or REPLACE FUNCTION usr_modified() RETURNS TRIGGER AS $$
DECLARE DECLARE
oldname ALIAS FOR $1;
newname ALIAS FOR $2;
oldpath TEXT; oldpath TEXT;
newpath TEXT; newpath TEXT;
BEGIN BEGIN
UPDATE usr SET username = newname WHERE username = oldname; -- in case we trigger on other events in future
oldpath := '/' || oldname || '/'; IF TG_OP = 'UPDATE' THEN
newpath := '/' || newname || '/'; IF NEW.username != OLD.username THEN
oldpath := '/' || OLD.username || '/';
UPDATE collection newpath := '/' || NEW.username || '/';
SET parent_container = replace( parent_container, oldpath, newpath), UPDATE collection
dav_name = replace( dav_name, oldpath, newpath) SET parent_container = replace( parent_container, oldpath, newpath),
WHERE substring(dav_name from 1 for char_length(oldpath)) = oldpath; dav_name = replace( dav_name, oldpath, newpath)
WHERE substring(dav_name from 1 for char_length(oldpath)) = oldpath;
UPDATE caldav_data END IF;
SET dav_name = replace( dav_name, oldpath, newpath) END IF;
WHERE substring(dav_name from 1 for char_length(oldpath)) = oldpath; RETURN NEW;
RETURN newname;
END; END;
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql;
CREATE TRIGGER usr_modified AFTER UPDATE ON usr
FOR EACH ROW EXECUTE PROCEDURE usr_modified();
DROP TRIGGER collection_modified ON collection CASCADE;
CREATE or REPLACE FUNCTION collection_modified() RETURNS TRIGGER AS $$
DECLARE
BEGIN
-- in case we trigger on other events in future
IF TG_OP = 'UPDATE' THEN
IF NEW.dav_name != OLD.dav_name THEN
UPDATE caldav_data
SET dav_name = replace( dav_name, OLD.dav_name, NEW.dav_name)
WHERE substring(dav_name from 1 for char_length(OLD.dav_name)) = OLD.dav_name;
END IF;
END IF;
RETURN NEW;
END;
$$ LANGUAGE plpgsql;
CREATE TRIGGER collection_modified AFTER UPDATE ON collection
FOR EACH ROW EXECUTE PROCEDURE collection_modified();
DROP TRIGGER caldav_data_modified ON caldav_data CASCADE; DROP TRIGGER caldav_data_modified ON caldav_data CASCADE;