[SOLVED]operator.setParameter method

Ale

Hi, I'm new to rapidminer. I'm trying to execute this simple process using java code

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.013">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.3.013" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="retrieve" compatibility="5.3.013" expanded="true" height="60" name="Retrieve model" width="90" x="45" y="75">
        <parameter key="repository_entry" value="//Local Repository/data/model"/>
      </operator>
      <operator activated="true" class="retrieve" compatibility="5.3.013" expanded="true" height="60" name="Retrieve testing" width="90" x="45" y="210">
        <parameter key="repository_entry" value="//Local Repository/data/testing"/>
      </operator>
      <operator activated="true" class="apply_model" compatibility="5.3.013" expanded="true" height="76" name="Apply Model" width="90" x="313" y="75">
        <list key="application_parameters"/>
      </operator>
      <connect from_op="Retrieve model" from_port="output" to_op="Apply Model" to_port="model"/>
      <connect from_op="Retrieve testing" from_port="output" to_op="Apply Model" to_port="unlabelled data"/>
      <connect from_op="Apply Model" from_port="labelled data" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
    </process>
  </operator>
</process>

I need to change the repository_entry value of the two retrieve operators. I'm using the setParameter method

Operator opRetModel = process.getOperator("Retrieve model");
            opRetModel.setParameter(???,model path)

but I don't understand what to use as first parameter to specify the path of the saved model.

I've read the question n 6 at this page http://rapid-i.com/rapidforum/index.php/topic,5807.0.html but I don't understand what is that class SingleDocumentInputOperator.
Thanks for your help.

Marco_Boeck

Hi,

I have updated the question in the FAQ because the operator used was from an extension and thus not the best example.
I'll rewrite this here anyway:

Step 1) Open the "OperatorsCore.xml" file and search for the name of the operator. In your case, <key>retrieve</key> is the one you're looking for. Note how that key is the same as the 'class' attribute in the process XML. Now you know that "<class>com.rapidminer.operator.io.RepositorySource</class>" is the implementation class of the operator.
Step 2) You can then check said class for string constants and you will find "PARAMETER_REPOSITORY_ENTRY". This is the key you need to use.

Regards,
Marco