org.datanucleus.store.xml

Class AbstractJAXBHandler

java.lang.Object

org.datanucleus.store.xml.AbstractJAXBHandler

All Implemented Interfaces:

JAXBHandler

Direct Known Subclasses:

JAXBRIHandler

public abstract class AbstractJAXBHandler
extends Object
implements JAXBHandler

Abstract base for all JAXBHandlers so that any concrete implementation only needs to implement the getJAXBContext method.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.datanucleus.metadata.MetaDataManager	mmgr

Constructor Summary

Constructors

Constructor and Description
AbstractJAXBHandler(org.datanucleus.metadata.MetaDataManager mmgr)

Method Summary

Modifier and Type	Method and Description
protected abstract JAXBContext	getJAXBContext(Class[] classes, org.datanucleus.ClassLoaderResolver clr) Convenience method to return a JAXContext for the supplied classes.
void	marshall(Object obj, Node node, org.datanucleus.ClassLoaderResolver clr) Method to marshall an object into XML for storing.
Object	unmarshall(Class cls, Node node, org.datanucleus.ClassLoaderResolver clr) Method to unmarshall a node from XML into an object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mmgr

protected org.datanucleus.metadata.MetaDataManager mmgr

Constructor Detail

AbstractJAXBHandler

public AbstractJAXBHandler(org.datanucleus.metadata.MetaDataManager mmgr)

Method Detail

getJAXBContext

protected abstract JAXBContext getJAXBContext(Class[] classes,
                                              org.datanucleus.ClassLoaderResolver clr)
                                       throws JAXBException

Convenience method to return a JAXContext for the supplied classes.

Parameters:

classes - The classes to handle

clr - ClassLoader resolver

Returns:

The JAXBContext

Throws:

JAXBException - Thrown if an error occurs

marshall

public void marshall(Object obj,
                     Node node,
                     org.datanucleus.ClassLoaderResolver clr)
              throws JAXBException

Description copied from interface: JAXBHandler

Method to marshall an object into XML for storing.

Specified by:

marshall in interface JAXBHandler

Parameters:

obj - The object

node - The node where we store it

clr - ClassLoader resolver

Throws:

JAXBException - If an error occurs in marshall process

unmarshall

public Object unmarshall(Class cls,
                         Node node,
                         org.datanucleus.ClassLoaderResolver clr)
                  throws JAXBException

Description copied from interface: JAXBHandler

Method to unmarshall a node from XML into an object.

Specified by:

unmarshall in interface JAXBHandler

Parameters:

cls - Type of object

node - The node to be unmarshalled

clr - ClassLoader resolver

Returns:

The unmarshalled object

Throws:

JAXBException - If an error occurs in unmarshall process