Name:
Hash Join

Description:
Joins records on input ports. It expects that on port [0], there is a driver and on port [1] is a slave. For each driver record, slave record is looked up in Hashtable which is created from all records on slave port. Pair of driver and slave records is sent to transformation class. The method transform is called for every pair of driverslave. It skips driver records for which there is no corresponding slave - unless outer join is specified, when only driver record is passed to transform method.