@incdevco/framework/pg/transaction/index.js

node.js lambda framework

var Sql = require('../sql');

function Transaction(connection) {
  'use strict';
  
  this.connection = connection;
  
}

Transaction.prototype.commit = function (passthrough) {
  'use strict';
  
  var self = this;
  
  return this.connection.query('COMMIT')
  .then(function () {
    
    self.connection.release();
    
    return passthrough;
    
  });
  
};

Transaction.prototype.delete = function () {
  'use strict';
  
  return new Sql.Delete({
    connection: this
  });
  
};

Transaction.prototype.insert = function (data) {
  'use strict';
  
  var query = new Sql.Insert({
    connection: this
  });
  
  query.insert(data);
  
  return query;
  
};

Transaction.prototype.query = function (sql, inserts) {
  'use strict';
  
  return this.connection.query(sql, inserts);
  
};

Transaction.prototype.select = function (expression) {
  'use strict';
  
  var query = new Sql.Select({
    connection: this
  });
  
  query.select(expression);
  
  return query;
  
};

Transaction.prototype.update = function (table) {
  'use strict';
  
  var query = new Sql.Update({
    connection: this
  });
  
  query.update(table);
  
  return query;
  
};

Transaction.prototype.rollback = function (exception) {
  'use strict';
  
  var self = this;
  
  return this.connection.query('ROLLBACK')
  .then(function () {
    
    self.connection.release();
    
    throw exception;
    
  });
  
};

module.exports = Transaction;