package org.apache.ojb.otm.copy;

 /* Copyright 2003-2005 The Apache Software Foundation

  *

  * Licensed 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

  *

  *     http://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 KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 import org.apache.ojb.broker.PersistenceBroker;

 /**

  * @author matthew.baird

  */

 public class CloneableObjectCopyStrategy implements ObjectCopyStrategy

 {

         /**

          * If users want to implement clone on all their objects, we can use this

          * to make copies. This is hazardous as user may mess it up, but it is also

          * potentially the fastest way of making a copy.

          *

          * Usually the OjbCloneable interface should just be delegating to the clone()

          * operation that the user has implemented.

          *

          * @see org.apache.ojb.otm.copy.ObjectCopyStrategy#copy(Object)

          *

          */

         public Object copy(Object obj, PersistenceBroker broker)

                         throws ObjectCopyException

         {

                 if (obj instanceof OjbCloneable)

                 {

                         try

                         {

                                 return ((OjbCloneable) obj).ojbClone();

                         }

                         catch (Exception e)

                         {

                                 throw new ObjectCopyException(e);

                         }

                 }

                 else

                 {

                         throw new ObjectCopyException("Object must implement OjbCloneable in order to use the"

                                                                                   + " CloneableObjectCopyStrategy");

                 }

         }

 }