demo.rmi.filesystem.server
Class RemoteInputStreamImpl

java.lang.Object
  java.io.InputStream
      java.io.FileInputStream
          demo.rmi.filesystem.server.RemoteInputStreamImpl

All Implemented Interfaces:

IRemoteInputStream, Closeable, Remote

public class RemoteInputStreamImpl
extends FileInputStream
implements IRemoteInputStream

Implementation of a remote input stream. It is created by the server using a local file as an argument. This class extends FileInputStream only as a convenience, we could extend UnicastRemoteObject and hold a reference to the FileInputStream in a field. Since RemoteException is a subclass of IOException the method declarations are compatible with their "super" implementations. However, all methods must catch the IOException returned by the super implementation and wrap it with a RemoteException.

Author:

Genady Beryozkin, rmi-info@genady.net

See Also:

IRemoteFile.getInputStream()

Constructor Summary

RemoteInputStreamImpl(File file)
Create a new RemoteInputStream that reads from a local (server) file.

Method Summary

int	available()
void	close()
void	mark(int readlimit)
boolean	markSupported()
int	read() Read a single byte from the stream.
byte[]	read(int count) Read count bytes from the stream.
void	reset()
long	skip(long n)

Methods inherited from class java.io.FileInputStream

finalize, getChannel, getFD, read, read

Methods inherited from class java.lang.Object

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

Constructor Detail

RemoteInputStreamImpl

public RemoteInputStreamImpl(File file)
                      throws RemoteException,
                             FileNotFoundException

Create a new RemoteInputStream that reads from a local (server) file.

Throws:

RemoteException

FileNotFoundException

See Also:

IRemoteFile.getInputStream()

Method Detail

available

public int available()
              throws RemoteException

Specified by:

available in interface IRemoteInputStream

Overrides:

available in class FileInputStream

Throws:

RemoteException

See Also:

InputStream.available()

close

public void close()
           throws RemoteException

Specified by:

close in interface IRemoteInputStream

Specified by:

close in interface Closeable

Overrides:

close in class FileInputStream

Throws:

RemoteException

See Also:

InputStream.close()

mark

public void mark(int readlimit)

Specified by:

mark in interface IRemoteInputStream

Overrides:

mark in class InputStream

See Also:

InputStream.mark(int)

markSupported

public boolean markSupported()

Specified by:

markSupported in interface IRemoteInputStream

Overrides:

markSupported in class InputStream

See Also:

InputStream.markSupported()

read

public int read()
         throws RemoteException

Description copied from interface: IRemoteInputStream

Read a single byte from the stream. Returns -1 on EOF.

Specified by:

read in interface IRemoteInputStream

Overrides:

read in class FileInputStream

Throws:

RemoteException

See Also:

InputStream.read()

read

public byte[] read(int count)
            throws RemoteException

Description copied from interface: IRemoteInputStream

Read count bytes from the stream. We can't have the same signature as InputStream.read(byte[], int, int) because if the array is an argument it won't be copied back to the client.

Specified by:

read in interface IRemoteInputStream

Parameters:

count - the maximum number of bytes to read.

Returns:

the data that was read or null if EOF reached.

Throws:

RemoteException

reset

public void reset()
           throws RemoteException

Specified by:

reset in interface IRemoteInputStream

Overrides:

reset in class InputStream

Throws:

RemoteException

See Also:

InputStream.reset()

skip

public long skip(long n)
          throws RemoteException

Specified by:

skip in interface IRemoteInputStream

Overrides:

skip in class FileInputStream

Throws:

RemoteException

See Also:

InputStream.skip(long)