com.sun.appserv.web.cache.filter

Class CachingOutputStreamWrapper

java.lang.Object

java.io.OutputStream

javax.servlet.ServletOutputStream

com.sun.appserv.web.cache.filter.CachingOutputStreamWrapper

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class CachingOutputStreamWrapper
extends javax.servlet.ServletOutputStream

an output stream wrapper to cache response bytes

Constructor Summary

Constructors

Constructor and Description
CachingOutputStreamWrapper()

Method Summary

Modifier and Type	Method and Description
void	close() Close this output stream, causing any buffered data to be flushed and any further output data to throw an IOException.
void	flush() ` Flush any buffered data for this output stream, which also causes the response to be committed.
byte[]	getBytes() return the cached bytes
boolean	isReady() This method can be used to determine if data can be written without blocking.
void	setWriteListener(javax.servlet.WriteListener writeListener)
void	write(byte[] b) Write b.length bytes from the specified byte array to our output stream.
void	write(byte[] b, int off, int len) Write len bytes from the specified byte array, starting at the specified offset, to our output stream.
void	write(int b) Write the specified byte to our output stream.

Methods inherited from class javax.servlet.ServletOutputStream

print, print, print, print, print, print, print, println, println, println, println, println, println, println, println

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingOutputStreamWrapper

public CachingOutputStreamWrapper()

Method Detail

write

public void write(int b)
           throws IOException

Write the specified byte to our output stream.

Specified by:

write in class OutputStream

Parameters:

b - The byte to be written

Throws:

IOException - if an input/output error occurs

write

public void write(byte[] b)
           throws IOException

Write b.length bytes from the specified byte array to our output stream.

Overrides:

write in class OutputStream

Parameters:

b - The byte array to be written

Throws:

IOException - if an input/output error occurs

write

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

Write len bytes from the specified byte array, starting at the specified offset, to our output stream.

Overrides:

write in class OutputStream

Parameters:

b - The byte array containing the bytes to be written

off - Zero-relative starting offset of the bytes to be written

len - The number of bytes to be written

Throws:

IOException - if an input/output error occurs

flush

public void flush()
           throws IOException

` Flush any buffered data for this output stream, which also causes the response to be committed.

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

close

public void close()
           throws IOException

Close this output stream, causing any buffered data to be flushed and any further output data to throw an IOException.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class OutputStream

Throws:

IOException

isReady

public boolean isReady()

This method can be used to determine if data can be written without blocking.

Returns:

true if a write to this ServletOutputStream will succeed, otherwise returns false.

setWriteListener

public void setWriteListener(javax.servlet.WriteListener writeListener)

getBytes

public byte[] getBytes()

return the cached bytes