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{ QueryRunnerAlreadyReleasedError } from \"../../error/QueryRunnerAlreadyReleasedError\"\nimport { QueryFailedError } from \"../../error/QueryFailedError\"\nimport { AbstractSqliteQueryRunner } from \"../sqlite-abstract/AbstractSqliteQueryRunner\"\nimport { TransactionNotStartedError } from \"../../error/TransactionNotStartedError\"\nimport { ExpoDriver } from \"./ExpoDriver\"\nimport { Broadcaster } from \"../../subscriber/Broadcaster\"\nimport { QueryResult } from \"../../query-runner/QueryResult\"\nimport { BroadcasterResult } from \"../../subscriber/BroadcasterResult\"\n\n// Needed to satisfy the Typescript compiler\ninterface IResultSet {\n insertId: number | undefined\n rowsAffected: number\n rows: {\n length: number\n item: (idx: number) => any\n _array: any[]\n }\n}\ninterface ITransaction {\n executeSql: (\n sql: string,\n args: any[] | undefined,\n ok: (tsx: ITransaction, resultSet: IResultSet) => void,\n fail: (tsx: ITransaction, err: any) => void,\n ) => void\n}\n\n/**\n * Runs queries on a single sqlite database connection.\n */\nexport class ExpoQueryRunner extends AbstractSqliteQueryRunner {\n /**\n * Database driver used by connection.\n */\n driver: ExpoDriver\n\n /**\n * Database transaction object\n */\n private transaction?: ITransaction\n\n // -------------------------------------------------------------------------\n // Constructor\n // -------------------------------------------------------------------------\n\n constructor(driver: ExpoDriver) {\n super()\n this.driver = driver\n this.connection = driver.connection\n this.broadcaster = new Broadcaster(this)\n }\n\n /**\n * Starts transaction. Within Expo, all database operations happen in a\n * transaction context, so issuing a `BEGIN TRANSACTION` command is\n * redundant and will result in the following error:\n *\n * `Error: Error code 1: cannot start a transaction within a transaction`\n *\n * Instead, we keep track of a `Transaction` object in `this.transaction`\n * and continue using the same object until we wish to commit the\n * transaction.\n */\n async startTransaction(): Promise<void> {\n this.isTransactionActive = true\n try {\n await this.broadcaster.broadcast(\"BeforeTransactionStart\")\n } catch (err) {\n this.isTransactionActive = false\n throw err\n }\n\n this.transactionDepth += 1\n\n await this.broadcaster.broadcast(\"AfterTransactionStart\")\n }\n\n /**\n * Commits transaction.\n * Error will be thrown if transaction was not started.\n * Since Expo will automatically commit the transaction once all the\n * callbacks of the transaction object have been completed, \"committing\" a\n * transaction in this driver's context means that we delete the transaction\n * object and set the stage for the next transaction.\n */\n async commitTransaction(): Promise<void> {\n if (\n !this.isTransactionActive &&\n typeof this.transaction === \"undefined\"\n )\n throw new TransactionNotStartedError()\n\n await this.broadcaster.broadcast(\"BeforeTransactionCommit\")\n\n this.transaction = undefined\n this.isTransactionActive = false\n\n this.transactionDepth -= 1\n\n await this.broadcaster.broadcast(\"AfterTransactionCommit\")\n }\n\n /**\n * Rollbacks transaction.\n * Error will be thrown if transaction was not started.\n * This method's functionality is identical to `commitTransaction()` because\n * the transaction lifecycle is handled within the Expo transaction object.\n * Issuing separate statements for `COMMIT` or `ROLLBACK` aren't necessary.\n */\n async rollbackTransaction(): Promise<void> {\n if (\n !this.isTransactionActive &&\n typeof this.transaction === \"undefined\"\n )\n throw new TransactionNotStartedError()\n\n await this.broadcaster.broadcast(\"BeforeTransactionRollback\")\n\n this.transaction = undefined\n this.isTransactionActive = false\n\n this.transactionDepth -= 1\n\n await this.broadcaster.broadcast(\"AfterTransactionRollback\")\n }\n\n /**\n * Called before migrations are run.\n */\n async beforeMigration(): Promise<void> {\n const databaseConnection = await this.connect()\n return new Promise((ok, fail) => {\n databaseConnection.exec(\n [{ sql: \"PRAGMA foreign_keys = OFF\", args: [] }],\n false,\n (err: any) => (err ? fail(err) : ok()),\n )\n })\n }\n\n /**\n * Called after migrations are run.\n */\n async afterMigration(): Promise<void> {\n const databaseConnection = await this.connect()\n return new Promise((ok, fail) => {\n databaseConnection.exec(\n [{ sql: \"PRAGMA foreign_keys = ON\", args: [] }],\n false,\n (err: any) => (err ? fail(err) : ok()),\n )\n })\n }\n\n /**\n * Executes a given SQL query.\n */\n async query(\n query: string,\n parameters?: any[],\n useStructuredResult = false,\n ): Promise<any> {\n if (this.isReleased) throw new QueryRunnerAlreadyReleasedError()\n\n return new Promise<any>(async (ok, fail) => {\n const databaseConnection = await this.connect()\n const broadcasterResult = new BroadcasterResult()\n\n this.driver.connection.logger.logQuery(query, parameters, this)\n this.broadcaster.broadcastBeforeQueryEvent(\n broadcasterResult,\n query,\n parameters,\n )\n\n const queryStartTime = +new Date()\n // All Expo SQL queries are executed in a transaction context\n databaseConnection.transaction(\n async (transaction: ITransaction) => {\n if (typeof this.transaction === \"undefined\") {\n await this.startTransaction()\n this.transaction = transaction\n }\n this.transaction.executeSql(\n query,\n parameters,\n async (t: ITransaction, raw: IResultSet) => {\n // log slow queries if maxQueryExecution time is set\n const maxQueryExecutionTime =\n this.driver.options.maxQueryExecutionTime\n const queryEndTime = +new Date()\n const queryExecutionTime =\n queryEndTime - queryStartTime\n\n this.broadcaster.broadcastAfterQueryEvent(\n broadcasterResult,\n query,\n parameters,\n true,\n queryExecutionTime,\n raw,\n undefined,\n )\n await broadcasterResult.wait()\n\n if (\n maxQueryExecutionTime &&\n queryExecutionTime > maxQueryExecutionTime\n ) {\n this.driver.connection.logger.logQuerySlow(\n queryExecutionTime,\n query,\n parameters,\n this,\n )\n }\n\n const result = new QueryResult()\n\n if (raw?.hasOwnProperty(\"rowsAffected\")) {\n result.affected = raw.rowsAffected\n }\n\n if (raw?.hasOwnProperty(\"rows\")) {\n let resultSet = []\n for (let i = 0; i < raw.rows.length; i++) {\n resultSet.push(raw.rows.item(i))\n }\n\n result.raw = resultSet\n result.records = resultSet\n }\n\n // return id of inserted row, if query was insert statement.\n if (query.startsWith(\"INSERT INTO\")) {\n result.raw = raw.insertId\n }\n\n if (useStructuredResult) {\n ok(result)\n } else {\n ok(result.raw)\n }\n },\n async (t: ITransaction, err: any) => {\n this.driver.connection.logger.logQueryError(\n err,\n query,\n parameters,\n this,\n )\n this.broadcaster.broadcastAfterQueryEvent(\n broadcasterResult,\n query,\n parameters,\n false,\n undefined,\n undefined,\n err,\n )\n await broadcasterResult.wait()\n\n fail(new QueryFailedError(query, parameters, err))\n },\n )\n },\n async (err: any) => {\n await this.rollbackTransaction()\n fail(err)\n },\n () => {\n this.isTransactionActive = false\n this.transaction = undefined\n },\n )\n })\n }\n}\n"],"sourceRoot":"../.."}