org.jboss.marshalling

Class ModularClassResolver

java.lang.Object

org.jboss.marshalling.ModularClassResolver

All Implemented Interfaces:

ClassResolver

public final class ModularClassResolver
extends Object
implements ClassResolver

A class table which implements an alternate class resolution strategy based on JBoss Modules. Each class name is stored along with its corresponding module identifier, which allows the object graph to be exactly reconstituted on the remote side. This class should be used when the marshalling and unmarshalling side may have differing class files.

Author:

David M. Lloyd

Method Summary

Modifier and Type	Method and Description
void	annotateClass(Marshaller marshaller, Class<?> clazz) Add optional information about a class to a stream.
void	annotateProxyClass(Marshaller marshaller, Class<?> proxyClass) Add optional information about a proxy class to a stream.
String	getClassName(Class<?> clazz) Get the class name to write for a given class.
static ModularClassResolver	getInstance(org.jboss.modules.ModuleLoader moduleLoader) Construct a new instance using the given module loader.
String[]	getProxyInterfaces(Class<?> proxyClass) Get the interface names to write for a given proxy class.
Class<?>	resolveClass(Unmarshaller unmarshaller, String className, long serialVersionUID) Load the local class for a class descriptor.
Class<?>	resolveProxyClass(Unmarshaller unmarshaller, String[] names) Load a proxy class that implements the given interfaces.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ModularClassResolver getInstance(org.jboss.modules.ModuleLoader moduleLoader)

Construct a new instance using the given module loader.

Parameters:

moduleLoader - the module loader

Returns:

the new instance

annotateClass

public void annotateClass(Marshaller marshaller,
                          Class<?> clazz)
                   throws IOException

Add optional information about a class to a stream. The class descriptor will already have been written.

Specified by:

annotateClass in interface ClassResolver

Parameters:

marshaller - the marshaller to write to

clazz - the class that was written

Throws:

IOException - if an error occurs

See Also:

ObjectOutputStream.annotateClass(Class)

annotateProxyClass

public void annotateProxyClass(Marshaller marshaller,
                               Class<?> proxyClass)
                        throws IOException

Add optional information about a proxy class to a stream. The class descriptor will already have been written.

Specified by:

annotateProxyClass in interface ClassResolver

Parameters:

marshaller - the marshaller to write to

proxyClass - the class that was written

Throws:

IOException - if an error occurs

See Also:

ObjectOutputStream.annotateProxyClass(Class)

getClassName

public String getClassName(Class<?> clazz)
                    throws IOException

Get the class name to write for a given class. The class name will be written as part of the class descriptor.

Specified by:

getClassName in interface ClassResolver

Parameters:

clazz - the class

Returns:

the class name

Throws:

IOException - if an error occurs

getProxyInterfaces

public String[] getProxyInterfaces(Class<?> proxyClass)
                            throws IOException

Get the interface names to write for a given proxy class. The interface names will be written as part of the class descriptor.

Specified by:

getProxyInterfaces in interface ClassResolver

Parameters:

proxyClass - the proxy class

Returns:

the proxy class interface names

Throws:

IOException - if an error occurs

resolveClass

public Class<?> resolveClass(Unmarshaller unmarshaller,
                             String className,
                             long serialVersionUID)
                      throws IOException,
                             ClassNotFoundException

Load the local class for a class descriptor. The class descriptor has already been read, but any data written by ClassResolver.annotateClass(Marshaller, Class) should be read by this method.

Specified by:

resolveClass in interface ClassResolver

Parameters:

unmarshaller - the unmarshaller from which to read annotation data, if any

className - the class name

serialVersionUID - the serial version UID

Returns:

the corresponding class

Throws:

IOException - if an I/O error occurs

ClassNotFoundException - if the class could not be loaded

See Also:

ObjectInputStream.resolveClass(java.io.ObjectStreamClass)

resolveProxyClass

public Class<?> resolveProxyClass(Unmarshaller unmarshaller,
                                  String[] names)
                           throws IOException,
                                  ClassNotFoundException

Load a proxy class that implements the given interfaces.

Specified by:

resolveProxyClass in interface ClassResolver

Parameters:

unmarshaller - the unmarshaller from which to read annotation data, if any

names - the class descriptor

Returns:

the proxy class

Throws:

IOException - if an I/O error occurs

ClassNotFoundException - if the proxy class could not be loaded

See Also:

ObjectInputStream.resolveProxyClass(String[])