Multi Mapping
DescriptionThe Multi Mapping transform re-uses a child pipeline (a mapping) with zero or more inputs and outputs. Unlike Simple Mapping, which always has one Mapping input and one Mapping output, Multi Mapping can:
Non-main input mappings become info hops (the same idea as Stream Lookup). Non-main output mappings become target hops (the same idea as Switch / Case). That lets you wrap a reusable Stream Lookup or Switch / Case style pipeline. The child pipeline is always executed with a local Hop pipeline run configuration so rows can be streamed in and out of the mapping. |
Options
-
Transform name: a unique name in your pipeline
-
Pipeline: the mapping (sub-) pipeline to run
-
Run configuration: local Hop run configuration only
-
Parameters tab: variables to pass into the child, plus inherit-all-variables
-
Input tabs (Add Input): one tab per input mapping
-
Input source transform: parent transform that sends rows (empty = auto-detect remaining hops)
-
Mapping Input transform: child Mapping Input that receives those rows
-
Main data path: checked for the primary stream; unchecked for an info hop
-
Update mapped field names downstream: reverse input renames on the way out
-
Field mapping table
-
-
Output tabs (Add Output): one tab per output mapping
-
Mapping Output transform: child Mapping Output that produces rows
-
Output target transform: parent transform that receives those rows (empty = auto-detect remaining hops)
-
Main data path: checked for the primary stream; unchecked for a target hop
-
Field mapping table
-
You can close every input or output tab. A mapping with no inputs is a generator. A mapping with no outputs is a sink.