The “Graph Global Parameters” are variables that are accessible from any Action anywhere inside your transformation graph. You can use “Global Parameters” inside:
“Graph Global Parameter” are extensively used when creating and running sub-graphs (e.g. in a loop). Typically, the parameters required for the proper execution of the sub-graphs are passed from the “master graph” (i.e. the “calling” graph) to the “Sub-Graphs” (i.e. the “called” graphs) using “Graph Global Parameter”: See the section 5.3.3. about calling sub-graphs.
To create a “Global Parameter”, open the “Graph Global Parameters” window:
… and click the “Add Parameter” button:
You can change the value of existing “Global Parameters” using:
1.Command-line options: (see section 4.7.1). That’s the most common way of defining the “Global Paramaters” values. This allows you to easily “parameterize” your Anatella-Data-Transformation-Graph.
Here is a small example:
oWe define a new Global Variable named “GP”:
oThe transformation-graph is composed of 2 Actions. The first Action generates a table with 4 rows and changes the value of the “GP” variables after generating 3 rows: