@adonisjs/lucid
Version:
SQL ORM built on top of Active Record pattern
97 lines (96 loc) • 3.24 kB
JavaScript
;
/*
* @adonisjs/lucid
*
* (c) Harminder Virk <virk@adonisjs.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.PgDialect = void 0;
class PgDialect {
constructor(client) {
Object.defineProperty(this, "client", {
enumerable: true,
configurable: true,
writable: true,
value: client
});
Object.defineProperty(this, "name", {
enumerable: true,
configurable: true,
writable: true,
value: 'postgres'
});
Object.defineProperty(this, "supportsAdvisoryLocks", {
enumerable: true,
configurable: true,
writable: true,
value: true
});
/**
* Reference to the database version. Knex.js fetches the version after
* the first database query, so it will be set to undefined initially
*/
Object.defineProperty(this, "version", {
enumerable: true,
configurable: true,
writable: true,
value: this.client.getReadClient()['context']['client'].version
});
/**
* The default format for datetime column. The date formats is
* valid for luxon date parsing library
*/
Object.defineProperty(this, "dateTimeFormat", {
enumerable: true,
configurable: true,
writable: true,
value: "yyyy-MM-dd'T'HH:mm:ss.SSSZZ"
});
}
/**
* Returns an array of table names for one or many schemas.
*/
async getAllTables(schemas) {
const tables = await this.client
.query()
.from('pg_catalog.pg_tables')
.select('tablename as table_name')
.whereIn('schemaname', schemas)
.orderBy('tablename', 'asc');
return tables.map(({ table_name }) => table_name);
}
/**
* Truncate pg table with option to cascade and restart identity
*/
async truncate(table, cascade = false) {
return cascade
? this.client.rawQuery(`TRUNCATE ${table} RESTART IDENTITY CASCADE;`)
: this.client.rawQuery(`TRUNCATE ${table};`);
}
/**
* Drop all tables inside the database
*/
async dropAllTables(schemas) {
const tables = await this.getAllTables(schemas);
await this.client.rawQuery(`DROP table ${tables.join(',')} CASCADE;`);
}
/**
* Attempts to add advisory lock to the database and
* returns it's status.
*/
async getAdvisoryLock(key) {
const response = await this.client.rawQuery(`SELECT PG_TRY_ADVISORY_LOCK('${key}') as lock_status;`);
return response.rows[0] && response.rows[0].lock_status === true;
}
/**
* Releases the advisory lock
*/
async releaseAdvisoryLock(key) {
const response = await this.client.rawQuery(`SELECT PG_ADVISORY_UNLOCK('${key}') as lock_status;`);
return response.rows[0] && response.rows[0].lock_status === true;
}
}
exports.PgDialect = PgDialect;