function promisifyBuilder(builder)
{  
  return new Promise((resolve, reject) => {

    builder.callback(function(err, response) {

      if(err != null) reject(err);
      resolve(response);
    });   
  })
}

function makeMapFromDbResult(response, key)
{
  let data = {};
  for(let i = 0; i < response.length; i++)
  {
    let record = response[i];
    data[ record[key] ] = record;
  }

  return data;
}

module.exports = {
    promisifyBuilder,
    makeMapFromDbResult
  }