code: protected void validate(String operationType) throws Exception
  	{
  		super.validate(operationType);
  
  		MPSString id_validator = new MPSString();
  		id_validator.setConstraintIsReq(MPSConstants.ADD_CONSTRAINT, true);
  		id_validator.setConstraintIsReq(MPSConstants.MODIFY_CONSTRAINT, true);
  		id_validator.validate(operationType, id, "\"id\"");
  		
  		MPSString task_id_validator = new MPSString();
  		task_id_validator.validate(operationType, task_id, "\"task_id\"");
  		
  		MPSIPAddress ip_address_validator = new MPSIPAddress();
  		ip_address_validator.validate(operationType, ip_address, "\"ip_address\"");
  		
  		MPSInt starttime_validator = new MPSInt();
  		starttime_validator.validate(operationType, starttime, "\"starttime\"");
  		
  		MPSInt endtime_validator = new MPSInt();
  		endtime_validator.validate(operationType, endtime, "\"endtime\"");
  		
  		MPSString status_validator = new MPSString();
  		status_validator.setConstraintMaxStrLen(MPSConstants.GENERIC_CONSTRAINT, 128);
  		status_validator.validate(operationType, status, "\"status\"");
  		
  	}
docs: <pre>
  Performs generic data validation for the operation to be performed
  </pre>