Performance & Developer ease of use Improvements

[rotexdegba]

• Figure out how to improve data retrieval using Iterators & Generators especially for large data sets. Look at Atlas PDO & AuraSql Yield methods implementation & see if they are more performant than the fetch methods on large data-sets. These two articles & similar may be also helpful: http://www.dragonbe.com/2015/07/speeding-up-database-calls-with-pdo-and.html and http://evertpot.com/switching-to-generators/.

• Implement save relations at the Collection and Record Levels. Should be easy to do by calling saveAll on each collection of related data.

• Write an alternative implementation of \GDAO\Model\Collection using SplFixedArray instead of a plain old php array (SplFixedArray seems to be more memory efficient than php arrays).

  in loadData(..) and __construct(..) add a line like this
  $this->_data = \SplFixedArray::fromArray($data);

• Move \LeanOrm\Model::getCurrentConnectionInfo() to the \GDAO\Model class and write unit test for it.

• Aim to meet the coding standards by http://thephpleague.com/#quality and hopefully see if this project can become a league package http://thephpleague.com/#contribute see https://github.com/thephpleague/skeleton