/*
 * JBoss, Home of Professional Open Source
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.managed.plugins;

import java.io.ObjectStreamException;
import java.io.Serializable;

import org.jboss.beans.info.spi.BeanInfo;
import org.jboss.beans.info.spi.PropertyInfo;
import org.jboss.managed.api.Fields;
import org.jboss.managed.api.ManagedObject;
import org.jboss.managed.api.factory.ManagedObjectFactory;
import org.jboss.managed.plugins.factory.ManagedObjectFactoryBuilder;
import org.jboss.managed.spi.factory.InstanceClassFactory;
import org.jboss.metatype.api.values.MetaValue;
import org.jboss.metatype.api.values.MetaValueFactory;
import org.jboss.metatype.plugins.values.MetaValueFactoryBuilder;

/**
 * An extension of ManagedPropertyImpl.
 *
 * @author Scott.Stark@jboss.org
 * @author Ales.Justin@jboss.org
 * @version $Revision: 86627 $
 */
public class WritethroughManagedPropertyImpl extends ManagedPropertyImpl
{
   private static final long serialVersionUID = 1;

   /** The meta value factory */
   private transient MetaValueFactory valueFactory;
   /** The managed object factory */
   private transient ManagedObjectFactory objectFactory;

   public WritethroughManagedPropertyImpl(Fields fields)
   {
      super(fields);
   }

   public WritethroughManagedPropertyImpl(ManagedObject managedObject, Fields fields)
   {
      super(managedObject, fields);
   }

   public WritethroughManagedPropertyImpl(Fields fields, MetaValueFactory valueFactory, ManagedObjectFactory objectFactory)
   {
      super(fields);
      this.valueFactory = valueFactory;
      this.objectFactory = objectFactory;
   }

   protected ManagedObjectFactory getObjectFactory()
   {
      if (objectFactory == null)
         objectFactory = ManagedObjectFactoryBuilder.create();
      return objectFactory;
   }

   protected MetaValueFactory getValueFactory()
   {
      if (valueFactory == null)
         valueFactory = MetaValueFactoryBuilder.create();
      return valueFactory;
   }

   /**
    * Write the value back to the attachment if there is a PropertyInfo
    * in the Fields.PROPERTY_INFO field.
    */
   @Override
   @SuppressWarnings("unchecked")
   public void setValue(MetaValue value)
   {
      PropertyInfo propertyInfo = getField(Fields.PROPERTY_INFO, PropertyInfo.class);
      if (propertyInfo != null)
      {
         Object attachment = getManagedObject().getAttachment();
         if (attachment != null)
         {
            ManagedObjectFactory mof = getObjectFactory();
            InstanceClassFactory icf = mof.getInstanceClassFactory(attachment.getClass(), null);
            BeanInfo beanInfo = propertyInfo.getBeanInfo();
            icf.setValue(beanInfo, this, attachment, value);
         }
      }
      // Update the field value only after it has been written to the attachment
      super.setValue(value);
   }

   /**
    * Expose only plain ManangedPropertyImpl.
    *
    * @return simpler ManagedPropertyImpl
    * @throws ObjectStreamException for any error
    */
   private Object writeReplace() throws ObjectStreamException
   {
      ManagedPropertyImpl managedProperty = new ManagedPropertyImpl(getManagedObject(), getFields());
      managedProperty.setTargetManagedObject(getTargetManagedObject());
      return managedProperty;
   }
}
