sequelize-ibmi/lib/dialects/ibmi/query-interface.js

Multi dialect ORM for Node.JS

'use strict';

const Transaction = require('../../transaction');
const { QueryInterface } = require('../abstract/query-interface');

/**
 Returns an object that enables the `ibmi` dialect to call underlying odbc
 transaction functions through the connection methods instead 

 @class QueryInterface
 @static
 @private
 */

class IBMiQueryInterface extends QueryInterface {

  startTransaction(transaction, options) {
    if (!transaction || !(transaction instanceof Transaction)) {
      throw new Error('Unable to start a transaction without transaction object!');
    }
    options = { ...options, transaction: transaction.parent || transaction };

    options.transaction.name = transaction.parent ? transaction.name : undefined;
    return transaction.connection.beginTransaction();
  }

  commitTransaction(transaction) {
    if (!transaction || !(transaction instanceof Transaction)) {
      throw new Error('Unable to commit a transaction without transaction object!');
    }
    if (transaction.parent) {
      // Savepoints cannot be committed
      return Promise.resolve();
    }

    // options = Object.assign({}, options, {
    //   transaction: transaction.parent || transaction,
    //   supportsSearchPath: false,
    //   completesTransaction: true
    // });

    const promise = transaction.connection.commit();
    transaction.finished = 'commit';
    return promise;
  }

  rollbackTransaction(transaction, options) {
    if (!transaction || !(transaction instanceof Transaction)) {
      throw new Error('Unable to rollback a transaction without transaction object!');
    }

    options = {
      ...options,
      transaction: transaction.parent || transaction,
      supportsSearchPath: false,
      completesTransaction: true
    };
    options.transaction.name = transaction.parent ? transaction.name : undefined;

    const promise = transaction.connection.rollback();
    transaction.finished = 'commit';

    return promise;
  }
}

exports.IBMiQueryInterface = IBMiQueryInterface;