skipIf('sqlite' === $this->connection->getDatabasePlatform()->getName(), 'Migration can only be executed safely on \'mysql\' or \'postgresql\'.'); // remove all FK from entry_tag switch ($this->connection->getDatabasePlatform()->getName()) { case 'mysql': $query = $this->connection->query(" SELECT CONSTRAINT_NAME FROM information_schema.key_column_usage WHERE TABLE_NAME = '" . $this->getTable('entry_tag', WallabagMigration::UN_ESCAPED_TABLE) . "' AND CONSTRAINT_NAME LIKE 'FK_%' AND TABLE_SCHEMA = '" . $this->connection->getDatabase() . "'" ); $query->execute(); foreach ($query->fetchAll() as $fk) { $this->addSql('ALTER TABLE ' . $this->getTable('entry_tag') . ' DROP FOREIGN KEY ' . $fk['CONSTRAINT_NAME']); } break; case 'postgresql': // http://dba.stackexchange.com/questions/36979/retrieving-all-pk-and-fk $query = $this->connection->query(" SELECT conrelid::regclass AS table_from ,conname ,pg_get_constraintdef(c.oid) FROM pg_constraint c JOIN pg_namespace n ON n.oid = c.connamespace WHERE contype = 'f' AND conrelid::regclass::text = '" . $this->getTable('entry_tag', WallabagMigration::UN_ESCAPED_TABLE) . "' AND n.nspname = 'public';" ); $query->execute(); foreach ($query->fetchAll() as $fk) { $this->addSql('ALTER TABLE ' . $this->getTable('entry_tag') . ' DROP CONSTRAINT ' . $fk['conname']); } break; } $this->addSql('ALTER TABLE ' . $this->getTable('entry_tag') . ' ADD CONSTRAINT FK_entry_tag_entry FOREIGN KEY (entry_id) REFERENCES ' . $this->getTable('entry') . ' (id) ON DELETE CASCADE'); $this->addSql('ALTER TABLE ' . $this->getTable('entry_tag') . ' ADD CONSTRAINT FK_entry_tag_tag FOREIGN KEY (tag_id) REFERENCES ' . $this->getTable('tag') . ' (id) ON DELETE CASCADE'); // remove entry FK from annotation switch ($this->connection->getDatabasePlatform()->getName()) { case 'mysql': $query = $this->connection->query(" SELECT CONSTRAINT_NAME FROM information_schema.key_column_usage WHERE TABLE_NAME = '" . $this->getTable('annotation', WallabagMigration::UN_ESCAPED_TABLE) . "' AND CONSTRAINT_NAME LIKE 'FK_%' AND COLUMN_NAME = 'entry_id' AND TABLE_SCHEMA = '" . $this->connection->getDatabase() . "'" ); $query->execute(); foreach ($query->fetchAll() as $fk) { $this->addSql('ALTER TABLE ' . $this->getTable('annotation') . ' DROP FOREIGN KEY ' . $fk['CONSTRAINT_NAME']); } break; case 'postgresql': // http://dba.stackexchange.com/questions/36979/retrieving-all-pk-and-fk $query = $this->connection->query(" SELECT conrelid::regclass AS table_from ,conname ,pg_get_constraintdef(c.oid) FROM pg_constraint c JOIN pg_namespace n ON n.oid = c.connamespace WHERE contype = 'f' AND conrelid::regclass::text = '" . $this->getTable('annotation', WallabagMigration::UN_ESCAPED_TABLE) . "' AND n.nspname = 'public' AND pg_get_constraintdef(c.oid) LIKE '%entry_id%';" ); $query->execute(); foreach ($query->fetchAll() as $fk) { $this->addSql('ALTER TABLE ' . $this->getTable('annotation') . ' DROP CONSTRAINT ' . $fk['conname']); } break; } $this->addSql('ALTER TABLE ' . $this->getTable('annotation') . ' ADD CONSTRAINT FK_annotation_entry FOREIGN KEY (entry_id) REFERENCES ' . $this->getTable('entry') . ' (id) ON DELETE CASCADE'); } /** * @param Schema $schema */ public function down(Schema $schema) { throw new SkipMigrationException('Too complex ...'); } }