public final void packBookInformation(BookInformation object, String file) {
  try {
    Marshaller conversion = contextBookInformation.createMarshaller();
    conversion.marshal(object, new FileOutputStream(file));              
  } catch (Exception exception) {
    System.out.println("An exception has occurred: " + exception.getMessage());
    if (Constants.DEBUG) {
      exception.printStackTrace();
    }
  }
}
 
public final void packBookInformationDetailed(BookInformationDetailed object, String file) {
  try {
    Marshaller conversion = contextBookInformationDetailed.createMarshaller();
    conversion.marshal(object, new FileOutputStream(file));              
  } catch (Exception exception) {
    System.out.println("An exception has occurred: " + exception.getMessage());
    if (Constants.DEBUG) {
      exception.printStackTrace();
    }  
  }
}       
 
public final BookInformation unpackBookInformation(String file) {
  try {
    Unmarshaller conversion = contextBookInformation.createUnmarshaller();
    return (BookInformation)conversion.unmarshal(new FileInputStream(file));  
  } catch (Exception exception) {
    System.out.println("An exception has occurred: " + exception.getMessage());
    if (Constants.DEBUG) {
      exception.printStackTrace();
    }
  }
  return null;
}
 
public final BookInformationDetailed unpackBookInformationDetailed(String file) {
  try {
    Unmarshaller conversion = contextBookInformationDetailed.createUnmarshaller();
    return (BookInformationDetailed)conversion.unmarshal(new FileInputStream(file));  
  } catch (Exception exception) {
    System.out.println("An exception has occurred: " + exception.getMessage());
    if (Constants.DEBUG) {
      exception.printStackTrace();
    }
  }
  return null;
}