typeorm
Version:
Data-Mapper ORM for TypeScript and ES2021+. Supports MySQL/MariaDB, PostgreSQL, MS SQL Server, Oracle, SAP HANA, SQLite, MongoDB databases.
121 lines (119 loc) • 5.32 kB
JavaScript
import { ConnectionIsNotSetError } from "../../error/ConnectionIsNotSetError";
import { QueryFailedError } from "../../error/QueryFailedError";
import { QueryRunnerAlreadyReleasedError } from "../../error/QueryRunnerAlreadyReleasedError";
import { QueryResult } from "../../query-runner/QueryResult";
import { Broadcaster } from "../../subscriber/Broadcaster";
import { BroadcasterResult } from "../../subscriber/BroadcasterResult";
import { AbstractSqliteQueryRunner } from "../sqlite-abstract/AbstractSqliteQueryRunner";
/**
* Runs queries on a single sqlite database connection.
*
* Does not support compose primary keys with autoincrement field.
* todo: need to throw exception for this case.
*/
export class SqliteQueryRunner 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 options = connection.options;
const maxQueryExecutionTime = this.driver.options.maxQueryExecutionTime;
const broadcaster = this.broadcaster;
if (!connection.isInitialized) {
throw new ConnectionIsNotSetError("sqlite");
}
const databaseConnection = await this.connect();
this.driver.connection.logger.logQuery(query, parameters, this);
await broadcaster.broadcast("BeforeQuery", query, parameters);
const broadcasterResult = new BroadcasterResult();
return new Promise(async (ok, fail) => {
try {
const queryStartTime = Date.now();
const isInsertQuery = query.startsWith("INSERT ");
const isDeleteQuery = query.startsWith("DELETE ");
const isUpdateQuery = query.startsWith("UPDATE ");
const execute = async () => {
if (isInsertQuery || isDeleteQuery || isUpdateQuery) {
await databaseConnection.run(query, parameters, handler);
}
else {
await databaseConnection.all(query, parameters, handler);
}
};
const self = this;
const handler = function (err, rows) {
if (err && err.toString().indexOf("SQLITE_BUSY:") !== -1) {
if (typeof options.busyErrorRetry === "number" &&
options.busyErrorRetry > 0) {
setTimeout(execute, options.busyErrorRetry);
return;
}
}
// log slow queries if maxQueryExecution time is set
const queryEndTime = Date.now();
const queryExecutionTime = queryEndTime - queryStartTime;
if (maxQueryExecutionTime &&
queryExecutionTime > maxQueryExecutionTime)
connection.logger.logQuerySlow(queryExecutionTime, query, parameters, self);
if (err) {
connection.logger.logQueryError(err, query, parameters, self);
broadcaster.broadcastAfterQueryEvent(broadcasterResult, query, parameters, false, undefined, undefined, err);
return fail(new QueryFailedError(query, parameters, err));
}
else {
const result = new QueryResult();
if (isInsertQuery) {
result.raw = this["lastID"];
}
else {
result.raw = rows;
}
broadcaster.broadcastAfterQueryEvent(broadcasterResult, query, parameters, true, queryExecutionTime, result.raw, undefined);
if (Array.isArray(rows)) {
result.records = rows;
}
result.affected = this["changes"];
if (useStructuredResult) {
ok(result);
}
else {
ok(result.raw);
}
}
};
await execute();
}
catch (err) {
fail(err);
}
finally {
await broadcasterResult.wait();
}
});
}
}
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