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{ QueryRunnerAlreadyReleasedError } from \"../../error/QueryRunnerAlreadyReleasedError\"\nimport { AbstractSqliteQueryRunner } from \"../sqlite-abstract/AbstractSqliteQueryRunner\"\nimport { SqljsDriver } from \"./SqljsDriver\"\nimport { Broadcaster } from \"../../subscriber/Broadcaster\"\nimport { QueryFailedError } from \"../../error/QueryFailedError\"\nimport { QueryResult } from \"../../query-runner/QueryResult\"\nimport { BroadcasterResult } from \"../../subscriber/BroadcasterResult\"\n\n/**\n * Runs queries on a single sqlite database connection.\n */\nexport class SqljsQueryRunner extends AbstractSqliteQueryRunner {\n    /**\n     * Flag to determine if a modification has happened since the last time this query runner has requested a save.\n     */\n    private isDirty = false\n\n    /**\n     * Database driver used by connection.\n     */\n    driver: SqljsDriver\n\n    // -------------------------------------------------------------------------\n    // Constructor\n    // -------------------------------------------------------------------------\n\n    constructor(driver: SqljsDriver) {\n        super()\n        this.driver = driver\n        this.connection = driver.connection\n        this.broadcaster = new Broadcaster(this)\n    }\n\n    // -------------------------------------------------------------------------\n    // Public methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Called before migrations are run.\n     */\n    async beforeMigration(): Promise<void> {\n        await this.query(`PRAGMA foreign_keys = OFF`)\n    }\n\n    /**\n     * Called after migrations are run.\n     */\n    async afterMigration(): Promise<void> {\n        await this.query(`PRAGMA foreign_keys = ON`)\n    }\n\n    private async flush() {\n        if (this.isDirty) {\n            await this.driver.autoSave()\n            this.isDirty = false\n        }\n    }\n\n    async release(): Promise<void> {\n        await this.flush()\n        return super.release()\n    }\n\n    /**\n     * Commits transaction.\n     * Error will be thrown if transaction was not started.\n     */\n    async commitTransaction(): Promise<void> {\n        await super.commitTransaction()\n        if (!this.isTransactionActive) {\n            await this.flush()\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        const command = query.trim().split(\" \", 1)[0]\n\n        const databaseConnection = this.driver.databaseConnection\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        let statement: any\n        try {\n            statement = databaseConnection.prepare(query)\n            if (parameters) {\n                parameters = parameters.map((p) =>\n                    typeof p !== \"undefined\" ? p : null,\n                )\n\n                statement.bind(parameters)\n            }\n\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 = queryEndTime - queryStartTime\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            const records: any[] = []\n\n            while (statement.step()) {\n                records.push(statement.getAsObject())\n            }\n\n            this.broadcaster.broadcastAfterQueryEvent(\n                broadcasterResult,\n                query,\n                parameters,\n                true,\n                queryExecutionTime,\n                records,\n                undefined,\n            )\n\n            const result = new QueryResult()\n\n            result.affected = databaseConnection.getRowsModified()\n            result.records = records\n            result.raw = records\n\n            statement.free()\n\n            if (command !== \"SELECT\") {\n                this.isDirty = true\n            }\n\n            if (useStructuredResult) {\n                return result\n            } else {\n                return result.raw\n            }\n        } catch (err) {\n            if (statement) {\n                statement.free()\n            }\n\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\n            throw new QueryFailedError(query, parameters, err)\n        } finally {\n            await broadcasterResult.wait()\n        }\n    }\n}\n"],"sourceRoot":"../.."}