[SOLVED] Process loader and Operator attributes

Hi everyone,

I am new in rapidminer and I am interested in how can I load a Process defined in xml file (<operator name="Global" class="Process"> ....) in the RAPID GUI.

Moreover, if exists any documentation about operators parameters from RAPID API? I read a wiki a pdf tutorial (for 4.6) and there is no description of these parameters.

For example, I dont know, what parameters in the AggregateOperator (http://rapid-i.com/api/rapidminer-5.1/com/rapidminer/operator/preprocessing/transformation/AggregationOperator.html) are.

I created a simple example code, where I tried read simple csv, create SUM aggregation and write data to file. The name of SUM column is number.

Code:

RapidMiner.init();

try {
/* Reading Data */
Operator trainingDataReader = OperatorService.createOperator(CSVExampleSource.class);
trainingDataReader.setParameter("csv_file", RapidMinerTest.projectPWD + "report1.csv");
   trainingDataReader.setParameter("column_separators", ";");

/* Classifier */
Operator aggregation = OperatorService.createOperator(AggregationOperator.class);
   //aggregation.setParameter("keep_example_set", "true");
   //aggregation.setParameter("aggregation_attributes", "sum");
   aggregation.setParameter("aggregation_function", "sum");
   aggregation.setParameter("aggregation_name", "number");

/* Save model */
   Operator csvWriter = OperatorService.createOperator(CSVExampleSetWriter.class);
   csvWriter.setParameter("csv_file", RapidMinerTest.projectPWD + "report_OUT.csv");
   csvWriter.setParameter("column_separator", ";");

Process process = new Process();

process.getRootOperator().getSubprocess(0).addOperator(trainingDataReader);
process.getRootOperator().getSubprocess(0).addOperator(aggregation);
process.getRootOperator().getSubprocess(0).addOperator(csvWriter);

   trainingDataReader.getOutputPorts().getPortByName("output").connectTo(aggregation.getInputPorts().getPortByName("example set input"));
   aggregation.getOutputPorts().getPortByName("original").connectTo(csvWriter.getInputPorts().getPortByName("input"));

   System.out.println(process.getRootOperator().createProcessTree(0));

process.run();

And I dont know if the aggregatiom parametrs are right.

Code:

aggregation.setParameter("aggregation_function", "sum");
aggregation.setParameter("aggregation_name", "number");

Output csv data is same such as in input.

Same for output and input ports for Operators.

Thanks for any ideas.