Adam Freeman
39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.TransactionHelper = void 0;
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class TransactionHelper {
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steps = [];
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add(sql, params) {
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this.steps.push([sql, params]);
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return this;
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}
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run(db) {
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return new Promise((resolve, reject) => {
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let index = 0;
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let lastRow = NaN;
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const cb = (err, rowID) => {
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if (err) {
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db.run("ROLLBACK", () => reject());
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}
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else {
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lastRow = rowID ? rowID : lastRow;
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if (++index === this.steps.length) {
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db.run("COMMIT", () => resolve(lastRow));
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}
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else {
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this.runStep(index, db, cb);
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}
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}
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};
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db.run("BEGIN", () => this.runStep(0, db, cb));
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});
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}
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runStep(idx, db, cb) {
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const [sql, params] = this.steps[idx];
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db.run(sql, params, function (err) {
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cb(err, this.lastID);
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});
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}
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}
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exports.TransactionHelper = TransactionHelper;
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