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Accessing a process definition and metadata
I expected this to work with built-in RapidMiner operators, but neither Loop Repository nor Retrieve nor Open File will open a process from the repository.
However, with a simple Groovy script (in the built-in Execute Script operator) it's easy to get the process definition as XML, and then process it further with RapidMiner operators.
The result is a macro that contains the specified process formatted as XML. You can then use RapidMiner operators to process the data further and extract the things you want.
import com.rapidminer.repository.RepositoryLocation; import com.rapidminer.RepositoryProcessLocation; //Current repository path parentLoc = operator.getProcess().getRepositoryLocation().parent(); //Other repository entry, relative to the current path loc = new RepositoryLocation(parentLoc, "Example process"); //Process to read as XML processCode = new RepositoryProcessLocation(loc).getRawXML(); //Add a macro with the process XML operator.getProcess().getMacroHandler().addMacro("processXML", processCode);
You can find more details and a downloadable example process in my blog on datascientist.at.