org.objectweb.fractal.rmi
Class RmiAdapter

java.lang.Object
  org.objectweb.fractal.rmi.RmiAdapter

All Implemented Interfaces:

BindingController, NamingContext, Runnable

public class RmiAdapter

extends Object

implements NamingContext, Runnable, BindingController

Provides a very simple object adapter component. This naming context exports an object in the following way:

• if the object has already been exported, the corresponding Identifier is returned directly.
• otherwise a skeleton is created to give access to the interface implemented by the object (the object must implement at least one interface. If it implements more than one, the first one is selected).
• a new identifier is created for this skeleton. This identifer is just an integer value.
• the skeleton is associated to this new identifier in an internal hash table.
• the identifier is returned to the caller.

Field Summary

protected Logger	logger The logger used to log messages.
protected LoggerFactory	loggerFactory The optional logger factory used to get a logger for this component.
protected SkeletonFactory	skeletonFactory The skeleton factory used to create skeletons for the exported objects.

Constructor Summary

RmiAdapter()
Constructs a new RmiAdapter.

Method Summary

void	bindFc(String clientItfName, Object serverItf)
Identifier	decode(byte[] data, int offset, int length) Decodes an identifier from a buffer portion.
Identifier	decode(UnMarshaller u) Decodes an identifier from the provided unmarshaller.
Identifier	export(Object obj, Context hints) Creates a new identifier for the object interface designated by the obj parameter.
String[]	listFc()
Object	lookupFc(String clientItfName)
void	run() Blocks the caller thread.
void	unbindFc(String clientItfName)

Methods inherited from class java.lang.Object

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

Field Detail

skeletonFactory

protected SkeletonFactory skeletonFactory

The skeleton factory used to create skeletons for the exported objects.

loggerFactory

protected LoggerFactory loggerFactory

The optional logger factory used to get a logger for this component.

logger

protected Logger logger

The logger used to log messages. May be null.

Constructor Detail

RmiAdapter

public RmiAdapter()

Constructs a new RmiAdapter.

Method Detail

listFc

public String[] listFc()

Specified by:

listFc in interface BindingController

lookupFc

public Object lookupFc(String clientItfName)

Specified by:

lookupFc in interface BindingController

bindFc

public void bindFc(String clientItfName,
                   Object serverItf)

Specified by:

bindFc in interface BindingController

unbindFc

public void unbindFc(String clientItfName)

Specified by:

unbindFc in interface BindingController

export

public Identifier export(Object obj,
                         Context hints)
                  throws JonathanException

Creates a new identifier for the object interface designated by the obj parameter. Note that calling the resolve method on the returned identifier should return id.

Specified by:

export in interface NamingContext

Parameters:

obj - an object.

hints - additional information.

Returns:

an identifier managed by the target naming context.

Throws:

JonathanException - if something goes wrong.

See Also:

org.objectweb.jonathan.model.naming_context#export(org.objectweb.jonathan.model.name)

decode

public Identifier decode(byte[] data,
                         int offset,
                         int length)
                  throws JonathanException

Decodes an identifier from a buffer portion. Since identifiers are likely to be transmitted on the net, they may have to be encoded and decoded. The encoding method is borne by the Identifier interface, but the decoding methods must be borne by each naming context. This method creates an identifier (associated with the target naming context), from the length bytes of data starting at offset offset.

Specified by:

decode in interface NamingContext

Parameters:

data - the byte array to read the encoded identifier from.

offset - offset of the first byte of the encoding.

length - length of the encoding.

Returns:

a decoded identifier.

Throws:

JonathanException - if something goes wrong.

decode

public Identifier decode(UnMarshaller u)
                  throws JonathanException

Decodes an identifier from the provided unmarshaller.

Specified by:

decode in interface NamingContext

Parameters:

u - an unmarhaller;

Returns:

an identifier managed by the target naming context;

Throws:

JonathanException - if something goes wrong.

run

public void run()

Blocks the caller thread. This method is used to create a "daemon" thread when the export method is called for the time, in order to keep the JVM process alive, waiting for incoming remote method calls.

Specified by:

run in interface Runnable