* @copyright 2013 Akeneo SAS (http://www.akeneo.com) * @license http://opensource.org/licenses/MIT MIT */ interface ItemReaderInterface { /** * Reads a piece of input data and advance to the next one. Implementations * must return null at the end of the input * data set. * * @throws InvalidItemException if there is a problem reading the current record * (but the next one may still be valid) * @throws \Exception if an there is a non-specific error. (step execution will * be stopped in that case) * * @return null|mixed */ public function read(); }