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   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache 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
   *
   *    https://www.apache.org/licenses/LICENSE-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
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   *  specific language governing permissions and limitations
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   ****************************************************************/
  package org.apache.cayenne.reflect.valueholder;
  
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.cayenne.ValueHolder;
  import org.apache.cayenne.map.ObjRelationship;
  import org.apache.cayenne.reflect.Accessor;
  import org.apache.cayenne.reflect.ClassDescriptor;
  import org.apache.cayenne.reflect.ClassDescriptorFactory;
  import org.apache.cayenne.reflect.ClassDescriptorMap;
  import org.apache.cayenne.reflect.PersistentDescriptor;
  import org.apache.cayenne.reflect.PersistentDescriptorFactory;
  import org.apache.cayenne.reflect.PropertyDescriptor;
  
  /**
   * A {@link ClassDescriptorFactory} for Persistent objects that implement relationship
   * faulting via {@link ValueHolder}.
   * 
   * @since 3.0
   */
  public class ValueHolderDescriptorFactory extends PersistentDescriptorFactory {
  
      public ValueHolderDescriptorFactory(ClassDescriptorMap descriptorMap) {
          super(descriptorMap);
      }
  
      @Override
      protected void createToManyCollectionProperty(
              PersistentDescriptor descriptor,
              ObjRelationship relationship) {
          ClassDescriptor targetDescriptor = descriptorMap.getDescriptor(relationship
                  .getTargetEntityName());
          String reverseName = relationship.getReverseRelationshipName();
  
          Accessor accessor = createAccessor(descriptor, relationship.getName(), List.class);
          descriptor.addDeclaredProperty(new ValueHolderListProperty(
                  descriptor,
                  targetDescriptor,
                  accessor,
                  reverseName));
      }
  
      @Override
      protected void createToManyListProperty(
              PersistentDescriptor descriptor,
              ObjRelationship relationship) {
          ClassDescriptor targetDescriptor = descriptorMap.getDescriptor(relationship
                  .getTargetEntityName());
          String reverseName = relationship.getReverseRelationshipName();
  
          Accessor accessor = createAccessor(descriptor, relationship.getName(), List.class);
          descriptor.addDeclaredProperty(new ValueHolderListProperty(
                  descriptor,
                  targetDescriptor,
                  accessor,
                  reverseName));
      }
  
      @Override
      protected void createToManyMapProperty(
              PersistentDescriptor descriptor,
              ObjRelationship relationship) {
  
          ClassDescriptor targetDescriptor = descriptorMap.getDescriptor(relationship
                  .getTargetEntityName());
          String reverseName = relationship.getReverseRelationshipName();
          Accessor accessor = createAccessor(descriptor, relationship.getName(), Map.class);
          Accessor mapKeyAccessor = createMapKeyAccessor(relationship, targetDescriptor);
          PropertyDescriptor property = new ValueHolderMapProperty(
                  descriptor,
                  targetDescriptor,
                  accessor,
                  reverseName,
                  mapKeyAccessor);
  
          descriptor.addDeclaredProperty(property);
      }
  
      @Override
      protected void createToManySetProperty(
              PersistentDescriptor descriptor,
              ObjRelationship relationship) {
          ClassDescriptor targetDescriptor = descriptorMap.getDescriptor(relationship
                  .getTargetEntityName());
          String reverseName = relationship.getReverseRelationshipName();
  
          Accessor accessor = createAccessor(descriptor, relationship.getName(), Set.class);
          descriptor.addDeclaredProperty(new ValueHolderSetProperty(
                  descriptor,
                  targetDescriptor,
                  accessor,
                  reverseName));
      }
  
      @Override
      protected void createToOneProperty(
              PersistentDescriptor descriptor,
              ObjRelationship relationship) {
          ClassDescriptor targetDescriptor = descriptorMap.getDescriptor(relationship
                  .getTargetEntityName());
          String reverseName = relationship.getReverseRelationshipName();
  
          Accessor accessor = createAccessor(
                  descriptor,
                  relationship.getName(),
                  ValueHolder.class);
          PropertyDescriptor property = new ValueHolderProperty(
                  descriptor,
                  targetDescriptor,
                  accessor,
                  reverseName);
  
          descriptor.addDeclaredProperty(property);
      }
  }
  