org.entityfs.support.io
Class InputStreamProxy

java.lang.Object
  java.io.InputStream
      org.entityfs.support.io.InputStreamProxy

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

Base64InputStream, ChecksumInputStream, CountingInputStream, LockAwareInputStream

public class InputStreamProxy
extends InputStream

This is an abstract proxy implementation for wrapping an InputStream in a proxy object. The orthodox way to do the same would be to let the wrapping class inherit FilterInputStream, but that turned out to be a real performance hog.

Subclasses inherit this class and override methods as needed.

This would really be easier if InputStream had been an interface...

Since:

1.0

Author:

Karl Gustafsson

See Also:

OutputStreamProxy

Constructor Summary

protected

InputStreamProxy(InputStream proxied)

Method Summary

int	available() This returns the number of bytes available in the proxied stream.
void	close()
protected InputStream	getProxied()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

InputStreamProxy

protected InputStreamProxy(InputStream proxied)

Method Detail

getProxied

protected InputStream getProxied()

available

public int available()
              throws IOException

This returns the number of bytes available in the proxied stream. Subclasses that do some kind of transformation on the data in the proxied stream will probably have to override this.

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object