typeorm/browser/driver/nativescript/NativescriptQueryRunner.js

Data-Mapper ORM for TypeScript and ES2021+. Supports MySQL/MariaDB, PostgreSQL, MS SQL Server, Oracle, SAP HANA, SQLite, MongoDB databases.

import { QueryFailedError } from "../../error/QueryFailedError";
import { QueryRunnerAlreadyReleasedError } from "../../error/QueryRunnerAlreadyReleasedError";
import { QueryResult } from "../../query-runner/QueryResult";
import { Broadcaster } from "../../subscriber/Broadcaster";
import { AbstractSqliteQueryRunner } from "../sqlite-abstract/AbstractSqliteQueryRunner";
/**
 * Runs queries on a single sqlite database connection.
 */
export class NativescriptQueryRunner extends AbstractSqliteQueryRunner {
    // -------------------------------------------------------------------------
    // Constructor
    // -------------------------------------------------------------------------
    constructor(driver) {
        super();
        this.driver = driver;
        this.connection = driver.connection;
        this.broadcaster = new Broadcaster(this);
    }
    /**
     * Called before migrations are run.
     */
    async beforeMigration() {
        await this.query(`PRAGMA foreign_keys = OFF`);
    }
    /**
     * Called after migrations are run.
     */
    async afterMigration() {
        await this.query(`PRAGMA foreign_keys = ON`);
    }
    /**
     * Executes a given SQL query.
     */
    async query(query, parameters, useStructuredResult = false) {
        if (this.isReleased) {
            throw new QueryRunnerAlreadyReleasedError();
        }
        const connection = this.driver.connection;
        const databaseConnection = await this.connect();
        return new Promise(async (ok, fail) => {
            const isInsertQuery = query.substr(0, 11) === "INSERT INTO";
            connection.logger.logQuery(query, parameters, this);
            const handler = (err, raw) => {
                // log slow queries if maxQueryExecution time is set
                const maxQueryExecutionTime = this.driver.options.maxQueryExecutionTime;
                const queryEndTime = Date.now();
                const queryExecutionTime = queryEndTime - queryStartTime;
                if (maxQueryExecutionTime &&
                    queryExecutionTime > maxQueryExecutionTime) {
                    connection.logger.logQuerySlow(queryExecutionTime, query, parameters, this);
                }
                if (err) {
                    connection.logger.logQueryError(err, query, parameters, this);
                    fail(new QueryFailedError(query, parameters, err));
                }
                const result = new QueryResult();
                result.raw = raw;
                if (!isInsertQuery && Array.isArray(raw)) {
                    result.records = raw;
                }
                if (useStructuredResult) {
                    ok(result);
                }
                else {
                    ok(result.raw);
                }
            };
            const queryStartTime = Date.now();
            if (isInsertQuery) {
                databaseConnection.execSQL(query, parameters, handler);
            }
            else {
                databaseConnection.all(query, parameters, handler);
            }
        });
    }
    // -------------------------------------------------------------------------
    // Protected Methods
    // -------------------------------------------------------------------------
    /**
     * Parametrizes given object of values. Used to create column=value queries.
     */
    parametrize(objectLiteral, startIndex = 0) {
        return Object.keys(objectLiteral).map((key, index) => `"${key}"` + "=?");
    }
}

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