/*
    * 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.ServiceMethodParameter;
  
  import java.util.ArrayList;
  import java.util.Collection;
  
  /**
   * This validates a single criteriainoary entry
   * @author nwright
   */
  public class ServiceMethodParameterValidator implements ModelValidator {
  
      private ServiceMethodParameter parameter;
      private ServiceMethod method;
  
      public ServiceMethodParameterValidator(ServiceMethodParameter parameter,
              ServiceMethod method) {
          this.parameter = parameter;
          this.method = method;
      }
      private Collection errors;
  
      @Override
      public Collection<String> validate() {
          errors = new ArrayList();
          basicValidation();
          return errors;
      }
  
      private void basicValidation() {
          if (parameter.getName().equals("")) {
              addError("Name is required");
          }
          if (parameter.getDescription().equals("")) {
              addError("Description is required");
          }
          if (parameter.getType().equals("")) {
              addError("Type is required");
          }
      }
  
      private void addError(String msg) {
          String error = "Error in parameter: " + method.getService() + "."
                  + method.getName() + "(" + parameter.getName()
                  + "): " + msg;
          if (!errors.contains(error)) {
              errors.add(error);
          }
      }
  }