nukak-postgres
Version:
flexible and efficient ORM, with declarative JSON syntax and smart type-safety
49 lines • 5.32 kB
JavaScript
import { AbstractSqlQuerier } from 'nukak/querier';
import { PostgresDialect } from './postgresDialect.js';
export class PgQuerier extends AbstractSqlQuerier {
connect;
extra;
conn;
constructor(connect, extra) {
super(new PostgresDialect());
this.connect = connect;
this.extra = extra;
}
async all(query) {
this.extra?.logger?.(query);
await this.lazyConnect();
try {
const res = await this.conn.query(query);
return res.rows;
}
finally {
await this.releaseIfFree();
}
}
async run(query) {
this.extra?.logger?.(query);
await this.lazyConnect();
try {
const { rowCount: changes, rows = [] } = await this.conn.query(query);
const ids = rows.map((r) => r.id);
return { changes, ids, firstId: ids[0] };
}
finally {
await this.releaseIfFree();
}
}
async lazyConnect() {
this.conn ??= await this.connect();
}
async release() {
if (this.hasOpenTransaction) {
throw TypeError('pending transaction');
}
if (!this.conn) {
return;
}
await this.conn.release();
this.conn = undefined;
}
}
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