// BSD License (http://www.galagosearch.org/license)

 package org.galagosearch.tupleflow;

 import org.galagosearch.tupleflow.execution.ErrorHandler;

 import org.galagosearch.tupleflow.execution.Verification;

 /**

  *

  * @author trevor

  */

 public class NullProcessor<T> implements Processor<T> {

     Class<T> inputClass;

     public NullProcessor() {

         inputClass = null;

     }

     public NullProcessor(TupleFlowParameters parameters) throws ClassNotFoundException {

         String className = parameters.getXML().get("class");

         this.inputClass = (Class<T>) Class.forName(className);

     }

     public NullProcessor(Class<T> inputClass) { this.inputClass = inputClass; }

     public void process(T object) {}

     public void close() {}

     public static String getInputClass(TupleFlowParameters parameters) {

         return parameters.getXML().get("class", "");

     }

     public static String[] getInputOrder(TupleFlowParameters parameters) {

         String[] orderSpec = parameters.getXML().get("order", "").split(" ");

         return orderSpec;

     }

     public static void verify(TupleFlowParameters parameters, ErrorHandler handler) {

         Verification.requireParameters(new String[] { "class" }, parameters.getXML(), handler);

     }

 }