This feature will allow to have a better way to retrieve input and output from an execution / processing.

Objectives:
A user that have processed datasets on a large scale want to be able to:

• Download inputs/outputs datasets for a given processing
• Download all the datasets of a given processing "type"

New possibilities:

• Retrieve the details of a Processing (actually not new)
• Retrieve the list of datasets (input/outputs) of a Processing (actually not new ?)
• Be able to search a list of processing using certain criterias (name ? dates ? subjects ? dataset inputs ?)
• Download the input and/or the output datasets for a given Processing (or a list of processing)

Technically:

• Complete DatasetProcessingApi to add new methods
  --> downloadDatasetsFromProcessing(boolean input, boolean outpout, type, processing_id, converter?)
  --> searchProcessings(List searchCriterias) (to be defined)

We can also imagine having a button on the front page of a processing to be able to download input/output/both datasets concerning this processing.