Package org.jcsp.net.dynamic

Class DynamicClassLoaderMessage

java.lang.Object

org.jcsp.net.dynamic.DynamicClassLoaderMessage

All Implemented Interfaces:

Serializable

class DynamicClassLoaderMessage
extends Object
implements Serializable

Wraps an object when it is being sent over a channel by the DataSerializationFilter so that it includes a NetChannelLocation referring to the JFTP request channel to service requests for the class's binary image if it is not held at the receiving end.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	DynamicClassLoaderMessage.AdvancedInputStreamFactory	Factory for creating instances of AdvancedObjectInputStream bound to a given class manager.
private class	DynamicClassLoaderMessage.AdvancedObjectInputStream	This allows a custom ClassLoader to be used to resolve the object being deserialized.

Field Summary

Fields

Modifier and Type	Field	Description
private ClassLoader	classLoaderToUse	The class loader to use when deserializing the object.
private final NetChannelLocation	classSourceChannelLoc	The location of the request channel of the sender's JFTP process.
private long	createTime	Creation timestamp.
private SerializedData	serializedData	The serialized form of the user object being sent.

Constructor Summary

Constructors

Constructor	Description
DynamicClassLoaderMessage(Object data, NetChannelLocation classSourceChannelLoc)	Creates a new DynamicClassLoaderMessage encapsulating the given object.

Method Summary

Modifier and Type	Method	Description
Object	get(ClassManager cm)	Public accessor to deserialize and retrieve the object using the specified ClassManager.
void	setClassLoader(ClassLoader classLoader)	Sets the class loader to use when deserializing the object.
String	toString()	Diagnostic string identifying the message by timestamp.

Methods inherited from class java.lang.Object

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

Field Details

createTime

private long createTime

Creation timestamp.

classLoaderToUse

private transient ClassLoader classLoaderToUse

The class loader to use when deserializing the object. This is not sent as part of the message - it is for use by methods invoked by the receiver.

classSourceChannelLoc

private final NetChannelLocation classSourceChannelLoc

The location of the request channel of the sender's JFTP process.

serializedData

private SerializedData serializedData

The serialized form of the user object being sent.

Constructor Details

DynamicClassLoaderMessage

public DynamicClassLoaderMessage(Object data,
 NetChannelLocation classSourceChannelLoc)
                          throws NotSerializableException,
IOException

Creates a new DynamicClassLoaderMessage encapsulating the given object.

Parameters:

data - the actual user object being sent.

classSourceChannelLoc - the request channel of the JFTP process.

Throws:

NotSerializableException

IOException

Method Details

toString

public String toString()

Diagnostic string identifying the message by timestamp.

Overrides:

toString in class Object

get

public Object get(ClassManager cm)
           throws ClassNotFoundException,
IOException

Public accessor to deserialize and retrieve the object using the specified ClassManager.

Parameters:

cm - the class manager to use.

Returns:

the user object passed in this message.

Throws:

ClassNotFoundException

IOException

setClassLoader

public void setClassLoader(ClassLoader classLoader)

Sets the class loader to use when deserializing the object.

Parameters:

classLoader - the new class loader.