mysql "$@" <<EOF
+# Drop existing trigger on the dhcp4_shared_network table.
+DROP TRIGGER dhcp4_shared_network_ADEL;
+
+# Create new trigger which will delete options associated with the shared
+# network.
+DELIMITER $$
+CREATE TRIGGER dhcp4_shared_network_BDEL BEFORE DELETE ON dhcp4_shared_network
+ FOR EACH ROW
+ BEGIN
+ CALL createAuditEntryDHCP4('dhcp4_shared_network', OLD.id, "delete");
+ DELETE FROM dhcp4_options WHERE shared_network_name = OLD.name;
+ END $$
+DELIMITER ;
+
+# Drop existing trigger on the dhcp4_subnet table.
+DROP TRIGGER dhcp4_subnet_ADEL;
+
+# Create new trigger which will delete pools associated with the subnet and
+# the options associated with the subnet.
+DELIMITER $$
+CREATE TRIGGER dhcp4_subnet_BDEL BEFORE DELETE ON dhcp4_subnet
+ FOR EACH ROW
+ BEGIN
+ CALL createAuditEntryDHCP4('dhcp4_subnet', OLD.subnet_id, "delete");
+ DELETE FROM dhcp4_pool WHERE subnet_id = OLD.subnet_id;
+ DELETE FROM dhcp4_options WHERE dhcp4_subnet_id = OLD.subnet_id;
+ END $$
+DELIMITER ;
+
# Do not perform cascade deletion of the data in the dhcp4_pool because
# the cascade deletion does not execute triggers associated with the table.
# Instead we are going to use triggers on the dhcp4_subnet table.
REFERENCES dhcp4_subnet (subnet_id)
ON DELETE NO ACTION ON UPDATE CASCADE;
+# Drop existing trigger on the dhcp6_shared_network table.
+DROP TRIGGER dhcp6_shared_network_ADEL;
-# Drop existing trigger on the dhcp4_subnet table.
-DROP TRIGGER dhcp4_subnet_ADEL;
+# Create new trigger which will delete options associated with the shared
+# network.
+DELIMITER $$
+CREATE TRIGGER dhcp6_shared_network_BDEL BEFORE DELETE ON dhcp6_shared_network
+ FOR EACH ROW
+ BEGIN
+ CALL createAuditEntryDHCP6('dhcp6_shared_network', OLD.id, "delete");
+ DELETE FROM dhcp6_options WHERE shared_network_name = OLD.name;
+ END $$
+DELIMITER ;
+
+# Drop existing trigger on the dhcp6_subnet table.
+DROP TRIGGER dhcp6_subnet_ADEL;
# Create new trigger which will delete pools associated with the subnet and
# the options associated with the subnet.
DELIMITER $$
-CREATE TRIGGER dhcp4_subnet_BDEL BEFORE DELETE ON dhcp4_subnet
+CREATE TRIGGER dhcp6_subnet_BDEL BEFORE DELETE ON dhcp6_subnet
FOR EACH ROW
BEGIN
- CALL createAuditEntryDHCP4('dhcp4_subnet', OLD.subnet_id, "delete");
- DELETE FROM dhcp4_pool WHERE subnet_id = OLD.subnet_id;
- DELETE FROM dhcp4_options WHERE dhcp4_subnet_id = OLD.subnet_id;
+ CALL createAuditEntryDHCP6('dhcp6_subnet', OLD.subnet_id, "delete");
+ DELETE FROM dhcp6_pool WHERE subnet_id = OLD.subnet_id;
+ DELETE FROM dhcp6_pd_pool WHERE subnet_id = OLD.subnet_id;
+ DELETE FROM dhcp6_options WHERE dhcp6_subnet_id = OLD.subnet_id;
END $$
DELIMITER ;
+# Do not perform cascade deletion of the data in the dhcp6_pool and dhcp6_pd_pool
+# because the cascaded deletion does not execute triggers associated with the table.
+# Instead we are going to use triggers on the dhcp6_subnet table.
+ALTER TABLE dhcp6_pool
+ DROP FOREIGN KEY fk_dhcp6_pool_subnet_id;
+
+ALTER TABLE dhcp6_pd_pool
+ DROP FOREIGN KEY fk_dhcp6_pd_pool_subnet_id;
+
+ALTER TABLE dhcp6_pool
+ ADD CONSTRAINT fk_dhcp6_pool_subnet_id FOREIGN KEY (subnet_id)
+ REFERENCES dhcp6_subnet (subnet_id)
+ ON DELETE NO ACTION ON UPDATE CASCADE;
+
+ALTER TABLE dhcp6_pd_pool
+ ADD CONSTRAINT fk_dhcp6_pd_pool_subnet_id FOREIGN KEY (subnet_id)
+ REFERENCES dhcp6_subnet (subnet_id)
+ ON DELETE NO ACTION ON UPDATE CASCADE;
+
+# Create trigger which removes pool specific options upon removal of
+# the pool.
+DELIMITER $$
+CREATE TRIGGER dhcp6_pd_pool_BDEL BEFORE DELETE ON dhcp6_pd_pool FOR EACH ROW
+BEGIN
+DELETE FROM dhcp6_options WHERE scope_id = 6 AND pd_pool_id = OLD.id;
+END
+$$
+DELIMITER ;
# Update the schema version number
UPDATE schema_version