/*

  * 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);

         }

     }

 }