/*

  * Copyright 2009 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may        obtain a copy of the License at

  *

  *         http://www.osedu.org/licenses/ECL-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.student.contract.model.validation;

 import org.kuali.student.contract.model.ServiceMethod;

 import org.kuali.student.contract.model.ServiceMethodReturnValue;

 import java.util.ArrayList;

 import java.util.Collection;

 /**

  * This validates a single resultinoary entry

  * @author nwright

  */

 public class ServiceMethodReturnValueValidator implements ModelValidator

 {

  private ServiceMethodReturnValue returnValue;

  private ServiceMethod serviceMethod;

  public ServiceMethodReturnValueValidator (ServiceMethodReturnValue returnValue,

                                            ServiceMethod serviceMethod)

  {

   this.returnValue = returnValue;

   this.serviceMethod = serviceMethod;

  }

  private Collection errors;

  @Override

  public Collection<String> validate ()

  {

   errors = new ArrayList ();

   basicValidation ();

   return errors;

  }

  private void basicValidation ()

  {

   if (returnValue.getType ().equals (""))

   {

    addError ("return type is required");

   }

   if (returnValue.getDescription ().equals (""))

   {

    addError ("Description is required");

   }

  }

  private void addError (String msg)

  {

   String error = "Error in return value for method: " + serviceMethod.getService ()

    + "." + serviceMethod.getName () +  ": " + msg;

   if ( ! errors.contains (error))

   {

    errors.add (error);

   }

  }

 }