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   *  or more contributor license agreements.  See the NOTICE file
   *  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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   ****************************************************************/
  package org.apache.cayenne.reflect;
  
  import org.apache.cayenne.ObjectContext;
  import org.apache.cayenne.Persistent;
  import org.apache.cayenne.map.ObjAttribute;
  
  /**
   * A descriptor of an "attribute" persistent property.
   * 
   * @since 3.0
   */
  public class SimpleAttributeProperty extends BaseProperty implements AttributeProperty {
  
      private ObjAttribute attribute;
  
      public SimpleAttributeProperty(ClassDescriptor owner, Accessor accessor,
              ObjAttribute attribute) {
          super(owner, accessor);
          this.attribute = attribute;
      }
  
      @Override
      public boolean visit(PropertyVisitor visitor) {
          return visitor.visitAttribute(this);
      }
  
      public ObjAttribute getAttribute() {
          return attribute;
      }
  
      @Override
      public Object readProperty(Object object) throws PropertyException {
          resolveFault(object);
          return super.readProperty(object);
      }
  
      @Override
      public void writeProperty(Object object, Object oldValue, Object newValue)
              throws PropertyException {
          resolveFault(object);
          super.writeProperty(object, oldValue, newValue);
      }
  
      protected void resolveFault(Object object) throws PropertyException {
          try {
              Persistent persistent = (Persistent) object;
              ObjectContext context = persistent.getObjectContext();
              if (context != null) {
                  context.prepareForAccess(persistent, getName(), false);
              }
          }
          catch (ClassCastException e) {
              throw new PropertyException("Object is not a Persistent: '"
                      + object.getClass().getName()
                      + "'", this, object, e);
          }
      }
  }
  