Method _validateOverflow

lib/metadata/index.js:977–1005

()

  }

  _validateOverflow() {
    if (this.length < this._maxPrepared) {
      return;
    }

    const toRemove = [];
    this._logger('warning',
      'Prepared statements exceeded maximum. This could be caused by preparing queries that contain parameters');

    const toRemoveLength = this.length - this._maxPrepared + 1;

    for (const [key, info] of this._mapByKey) {
      if (!info.queryId) {
        // Only remove queries that contain queryId
        continue;
      }

      const length = toRemove.push([key, info]);
      if (length >= toRemoveLength) {
        break;
      }
    }

    for (const [key, info] of toRemove) {
      this._mapByKey.delete(key);
      this._mapById.delete(info.queryId.toString('hex'));
      this.length--;
    }
  }

  setById(info) {
    this._mapById.set(info.queryId.toString('hex'), info);