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From "Paulex Yang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-27) The network related channels in java.nio.channels are not implemented
Date Thu, 19 Jan 2006 10:50:43 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-27?page=comments#action_12363230 ] 

Paulex Yang commented on HARMONY-27:
------------------------------------

my proposed solution:

1. Refactor the java.net

Currently, the Harmony's socket structur is as below(red means API classes, others are package
private). I will attach the diagram to Jira.

I proposed to refactor to three packages like this:

java.net: for sure includes All API classes, and includes them only
public class Socket
public class ServerSocket
public abstract class SocketImpl
public class DatagramSocket
public class MulticastSocket extends DatagramSocket
public abstract class DatagramSocketImpl

org.apache.harmony.net: all implementation classes with a factory
public class SocketImplProvider
class PlainSocketImpl extends SocketImpl
class PlainSocketImpl2 extends PlainSocketImpl
class PlainServerSocketImpl extends PlainSocketImpl
class PlainDatagramSocketImpl extends DatagramSocketImpl
class PlainMulticastSocketImpl extends PlainDatagramSocketImpl
some relevant small classes(Socks4Message, GenericIPMreq)

org.apache.platform: currently, this package includes native file system and memory management
interface, so it is a good place to include the native network interface, the INetworkSystem
will encapsulate all JNI interfaces.
public interface INetworkSystem
public class OSNetworkSystem implements INetworkSystem

2. Implement java.nio
Now it is ready to implement NIO network channels based on it:
java.nio:
public abstract class SocketChannel
public abstract class ServerSocketChannel
public abstract class DatagramSocketChannel
class SocketChannelImpl
class ServerSocketImpl
class DatagramSocketChannelImpl
class SocketAdapter
class ServerSocketAdapter
class DatagramSocketAdapter

I will attach the result diagram into JIRA, too

3. Modulize them
According to the current Harmony modulization, propose to modify the modulization as follows:
luni exports: java.net, org.apache.harmony.net, org.apache.harmony.platform(move from nio
to luni, and export it)
nio exports: java.nio




> The network related channels in java.nio.channels are not implemented
> ---------------------------------------------------------------------
>
>          Key: HARMONY-27
>          URL: http://issues.apache.org/jira/browse/HARMONY-27
>      Project: Harmony
>         Type: Bug
>   Components: Classlib
>     Reporter: Paulex Yang
>     Assignee: Geir Magnusson Jr

>
> The following classes defined by Java Spec 5.0 in java.nio.channels are not included
in the class library code
> 	public abstarct class java.nio.channels.DatagramChannel
> 	public abstract class java.nio.channels.ServerSocketChannel
> 	public abstract class java.nio.channels.SocketChannel

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