Package etl :: Package component :: Package transform :: Module diff' :: Class diff

Class diff

          object --+        
                   |        
              signal --+    
                       |    
control.sleep'.component --+
                           |
                          diff

This is an ETL Component that finds difference. Takes 2 flows in input and detect a difference between these two flows using computed keys (based on data records) to compare elements that may not have to be in the same order.

Type : Data Component. Computing Performance : Semi-Streamline. Input Flows : 2. * main : The main flow. * .* : The second flow. Output Flows : 0-x. * same : Returns all elements that are the same in both input flows. * updated : Returns all updated elements * removed : Returns all elements that where in main and not in the second flow. * added : Returns all elements from the second flow that are not in the main channel.

Instance Methods

[hide private]

__copy__(self)

source code

__init__(self, keys, name='component.process.diff', transformer=None, row_limit=0)
Required Parameters keys : Keys for differentiating. source code