public function down(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
// collect foreign keys pointing to "our" tables
$tableNames = array('typo3_flow_resource_publishing_abstractpublishingconfiguration', 'typo3_flow_resource_resource', 'typo3_flow_security_account', 'typo3_flow_security_authorization_resource_securitypublis_861cb');
$foreignKeyHandlingSql = Service::getForeignKeyHandlingSql($schema, $this->platform, $tableNames, 'persistence_object_identifier', 'flow3_persistence_identifier');
// drop FK constraints
foreach ($foreignKeyHandlingSql['drop'] as $sql) {
$this->addSql($sql);
}
// rename identifier fields
$this->addSql("ALTER TABLE typo3_flow_resource_publishing_abstractpublishingconfiguration RENAME COLUMN persistence_object_identifier TO flow3_persistence_identifier");
$this->addSql("ALTER TABLE typo3_flow_resource_resource RENAME COLUMN persistence_object_identifier TO flow3_persistence_identifier");
$this->addSql("ALTER TABLE typo3_flow_security_account RENAME COLUMN persistence_object_identifier TO flow3_persistence_identifier");
$this->addSql("ALTER TABLE typo3_flow_security_authorization_resource_securitypublis_861cb RENAME COLUMN persistence_object_identifier TO flow3_persistence_identifier");
// add back FK constraints
foreach ($foreignKeyHandlingSql['add'] as $sql) {
$this->addSql($sql);
}
// rename tables
$this->addSql("ALTER TABLE typo3_flow_mvc_routing_objectpathmapping RENAME TO typo3_flow3_mvc_routing_objectpathmapping");
$this->addSql("ALTER TABLE typo3_flow_resource_publishing_abstractpublishingconfiguration RENAME TO typo3_flow3_resource_publishing_abstractpublishingconfiguration");
$this->addSql("ALTER TABLE typo3_flow_resource_resource RENAME TO typo3_flow3_resource_resource");
$this->addSql("ALTER TABLE typo3_flow_resource_resourcepointer RENAME TO typo3_flow3_resource_resourcepointer");
$this->addSql("ALTER TABLE typo3_flow_security_account RENAME TO typo3_flow3_security_account");
$this->addSql("ALTER TABLE typo3_flow_security_authorization_resource_securitypublis_861cb RENAME TO typo3_flow3_security_authorization_resource_securitypubli_6180a");
$this->addSql("ALTER TABLE typo3_flow_security_policy_role RENAME TO typo3_flow3_security_policy_role");
}