/*
    * Copyright 2011 The Kuali Foundation.
    * 
    * Licensed under the Educational Community License, Version 1.0 (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.opensource.org/licenses/ecl1.php
    * 
   * 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.ole.sys.batch;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.springframework.beans.factory.InitializingBean;
  
  
  /**
   * Abstract class which is the parent of all FlatFileSpecification implementations
   */
  public abstract class AbstractFlatFileSpecificationBase implements FlatFileSpecification, InitializingBean {
      protected Class<?> defaultBusinessObjectClass;
      protected List<FlatFileObjectSpecification> objectSpecifications;
      private List<Class<?>> childrenList = new ArrayList<Class<?>>();
      
      /**
       * @see org.kuali.ole.sys.batch.FlatFileSpecification#getObjectSpecification(Class)
       */
      public FlatFileObjectSpecification getObjectSpecification(Class<?> businessObjectClass) {
          for (FlatFileObjectSpecification objectSpecification : objectSpecifications) {
              if (objectSpecification.getBusinessObjectClass().equals(businessObjectClass)) {
                  return objectSpecification;
              }
          }
          return null;
      }
  
      /**
       * @see org.kuali.ole.sys.batch.FlatFileSpecification#getObjectSpecifications()
       */
      public List<FlatFileObjectSpecification> getObjectSpecifications() {
          return objectSpecifications;
      }
      
  
      /**
       * Sets the list of FlatFileObjectSpecifications which instruct the FlatFileSpecification how to parse
       * @param objectSpecifications
       */
      public void setObjectSpecifications(List<FlatFileObjectSpecification> objectSpecifications) {
          this.objectSpecifications = objectSpecifications;
      }
  
      public void setDefaultBusinessObjectClass(Class<?> businessObjectClass) {
          this.defaultBusinessObjectClass = businessObjectClass;
      }
      
      public void afterPropertiesSet() throws Exception{
          Class<?> child;
          for(FlatFileObjectSpecification specification: objectSpecifications) {
              if(specification.getParentBusinessObjectClass() != null) {
                  child = specification.getBusinessObjectClass();
                  if(childrenList.contains(child)) {
                      //A child can't appear twice within the same configuration, without having two parents
                      throw new Exception("The child " + child + " can't have more than one parent");
                  } else {
                      childrenList.add(child);
                  }
              }
          }
      }
  
  }