ExpoSQLiteSession Class — drizzle-orm Architecture

Source Code

drizzle-orm/src/expo-sqlite/session.ts lines 25–77

export class ExpoSQLiteSession<
	TFullSchema extends Record<string, unknown>,
	TSchema extends TablesRelationalConfig,
> extends SQLiteSession<'sync', SQLiteRunResult, TFullSchema, TSchema> {
	static override readonly [entityKind]: string = 'ExpoSQLiteSession';

	private logger: Logger;

	constructor(
		private client: SQLiteDatabase,
		dialect: SQLiteSyncDialect,
		private schema: RelationalSchemaConfig<TSchema> | undefined,
		options: ExpoSQLiteSessionOptions = {},
	) {
		super(dialect);
		this.logger = options.logger ?? new NoopLogger();
	}

	prepareQuery<T extends Omit<PreparedQueryConfig, 'run'>>(
		query: Query,
		fields: SelectedFieldsOrdered | undefined,
		executeMethod: SQLiteExecuteMethod,
		isResponseInArrayMode: boolean,
		customResultMapper?: (rows: unknown[][]) => unknown,
	): ExpoSQLitePreparedQuery<T> {
		const stmt = this.client.prepareSync(query.sql);
		return new ExpoSQLitePreparedQuery(
			stmt,
			query,
			this.logger,
			fields,
			executeMethod,
			isResponseInArrayMode,
			customResultMapper,
		);
	}

	override transaction<T>(
		transaction: (tx: ExpoSQLiteTransaction<TFullSchema, TSchema>) => T,
		config: SQLiteTransactionConfig = {},
	): T {
		const tx = new ExpoSQLiteTransaction('sync', this.dialect, this, this.schema);
		this.run(sql.raw(`begin${config?.behavior ? ' ' + config.behavior : ''}`));
		try {
			const result = transaction(tx);
			this.run(sql`commit`);
			return result;
		} catch (err) {
			this.run(sql`rollback`);
			throw err;
		}
	}
}