net.sf.click.extras.filter
Class CompressionServletResponseWrapper

java.lang.Object
  javax.servlet.ServletResponseWrapper
      javax.servlet.http.HttpServletResponseWrapper
          net.sf.click.extras.filter.CompressionServletResponseWrapper

All Implemented Interfaces:

HttpServletResponse, ServletResponse

public class CompressionServletResponseWrapper

extends HttpServletResponseWrapper

Implementation of HttpServletResponseWrapper that works with the CompressionServletResponseStream implementation.

Note this Jakarta Tomcat examples Filter is packaged in Click Extras for convenience.

Version:

Revision: 1.3, Date: 2004/03/18 16:40:28

Author:

Amy Roh, Dmitri Valdin

Field Summary

protected String	contentType Content type.
protected static String	INFO Descriptive information about this Response implementation.
protected HttpServletResponse	origResponse Original response.
protected ServletOutputStream	stream The ServletOutputStream that has been returned by getOutputStream(), if any.
protected int	threshold The threshold number to compress.
protected PrintWriter	writer The PrintWriter that has been returned by getWriter(), if any.

Fields inherited from interface javax.servlet.http.HttpServletResponse

SC_ACCEPTED, SC_BAD_GATEWAY, SC_BAD_REQUEST, SC_CONFLICT, SC_CONTINUE, SC_CREATED, SC_EXPECTATION_FAILED, SC_FORBIDDEN, SC_GATEWAY_TIMEOUT, SC_GONE, SC_HTTP_VERSION_NOT_SUPPORTED, SC_INTERNAL_SERVER_ERROR, SC_LENGTH_REQUIRED, SC_METHOD_NOT_ALLOWED, SC_MOVED_PERMANENTLY, SC_MOVED_TEMPORARILY, SC_MULTIPLE_CHOICES, SC_NO_CONTENT, SC_NON_AUTHORITATIVE_INFORMATION, SC_NOT_ACCEPTABLE, SC_NOT_FOUND, SC_NOT_IMPLEMENTED, SC_NOT_MODIFIED, SC_OK, SC_PARTIAL_CONTENT, SC_PAYMENT_REQUIRED, SC_PRECONDITION_FAILED, SC_PROXY_AUTHENTICATION_REQUIRED, SC_REQUEST_ENTITY_TOO_LARGE, SC_REQUEST_TIMEOUT, SC_REQUEST_URI_TOO_LONG, SC_REQUESTED_RANGE_NOT_SATISFIABLE, SC_RESET_CONTENT, SC_SEE_OTHER, SC_SERVICE_UNAVAILABLE, SC_SWITCHING_PROTOCOLS, SC_TEMPORARY_REDIRECT, SC_UNAUTHORIZED, SC_UNSUPPORTED_MEDIA_TYPE, SC_USE_PROXY

Constructor Summary

CompressionServletResponseWrapper(HttpServletResponse response)
Calls the parent constructor which creates a ServletResponse adaptor wrapping the given response object.

Method Summary

ServletOutputStream	createOutputStream() Create and return a ServletOutputStream to write the content associated with this Response.
void	finishResponse() Finish a response.
void	flushBuffer() Flush the buffer and commit this response.
ServletOutputStream	getOutputStream() Return the servlet output stream associated with this Response.
PrintWriter	getWriter() Return the writer associated with this Response.
void	setCompressionThreshold(int threshold) Set threshold the compression threshold in bytes.
void	setContentLength(int length) Set the content length.
void	setContentType(String contentType) Set content type.
void	setHeader(String header, String value) Set the string value in the header.
void	setIntHeader(String header, int value) Set the int value in the header.

Methods inherited from class javax.servlet.http.HttpServletResponseWrapper

addCookie, addDateHeader, addHeader, addIntHeader, containsHeader, encodeRedirectUrl, encodeRedirectURL, encodeUrl, encodeURL, sendError, sendError, sendRedirect, setDateHeader, setStatus, setStatus

Methods inherited from class javax.servlet.ServletResponseWrapper

getBufferSize, getCharacterEncoding, getLocale, getResponse, isCommitted, reset, resetBuffer, setBufferSize, setLocale, setResponse

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.servlet.ServletResponse

getBufferSize, getCharacterEncoding, getLocale, isCommitted, reset, resetBuffer, setBufferSize, setLocale

Field Detail

origResponse

protected HttpServletResponse origResponse

Original response.

INFO

protected static final String INFO

Descriptive information about this Response implementation.

See Also:

Constant Field Values

stream

protected ServletOutputStream stream

The ServletOutputStream that has been returned by getOutputStream(), if any.

writer

protected PrintWriter writer

The PrintWriter that has been returned by getWriter(), if any.

threshold

protected int threshold

The threshold number to compress.

contentType

protected String contentType

Content type.

Constructor Detail

CompressionServletResponseWrapper

public CompressionServletResponseWrapper(HttpServletResponse response)

Calls the parent constructor which creates a ServletResponse adaptor wrapping the given response object.

Parameters:

response - the servlet response to wrap

Method Detail

setContentType

public void setContentType(String contentType)

Set content type.

Parameters:

contentType - the response content type

setCompressionThreshold

public void setCompressionThreshold(int threshold)

Set threshold the compression threshold in bytes.

Parameters:

threshold - the compression threshold in bytes

createOutputStream

public ServletOutputStream createOutputStream()
                                       throws IOException

Create and return a ServletOutputStream to write the content associated with this Response.

Returns:

a new compressed servlet output stream

Throws:

IOException - if an input/output error occurs

finishResponse

public void finishResponse()

Finish a response.

flushBuffer

public void flushBuffer()
                 throws IOException

Flush the buffer and commit this response.

Throws:

IOException - if an input/output error occurs

getOutputStream

public ServletOutputStream getOutputStream()
                                    throws IOException

Return the servlet output stream associated with this Response.

Returns:

the servlet output stream associated with this response

Throws:

IllegalStateException - if getWriter has already been called for this response

IOException - if an input/output error occurs

getWriter

public PrintWriter getWriter()
                      throws IOException

Return the writer associated with this Response.

Returns:

the servlet print writer

Throws:

IllegalStateException - if getOutputStream has already been called for this response

IOException - if an input/output error occurs

setContentLength

public void setContentLength(int length)

Set the content length. This method does nothing.

Parameters:

length - the content length

setIntHeader

public void setIntHeader(String header,
                         int value)

Set the int value in the header.

Parameters:

header - the response header

value - the int value

setHeader

public void setHeader(String header,
                      String value)

Set the string value in the header.

Parameters:

header - the response header

value - the string value