com.jfw.web.filter
Class CompressionServletResponseWrapper

java.lang.Object
  javax.servlet.ServletResponseWrapper
      javax.servlet.http.HttpServletResponseWrapper
          com.jfw.web.filter.CompressionServletResponseWrapper

All Implemented Interfaces:

javax.servlet.http.HttpServletResponse, javax.servlet.ServletResponse

public class CompressionServletResponseWrapper
extends javax.servlet.http.HttpServletResponseWrapper

Implementation of HttpServletResponseWrapper that works with the CompressionServletResponseStream implementation.

Field Summary

protected java.lang.String	className
protected java.lang.String	contentType Content type
protected static java.lang.String	info Descriptive information about this Response implementation.
protected static JFWLogger	logger
protected javax.servlet.http.HttpServletResponse	origResponse Original response
protected javax.servlet.ServletOutputStream	stream The ServletOutputStream that has been returned by getOutputStream(), if any.
protected int	threshold The threshold number to compress
protected java.io.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_FOUND, 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(javax.servlet.http.HttpServletResponse response)
Calls the parent constructor which creates a ServletResponse adaptor wrapping the given response object.

Method Summary

javax.servlet.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.
javax.servlet.ServletOutputStream	getOutputStream() Return the servlet output stream associated with this Response.
java.io.PrintWriter	getWriter() Return the writer associated with this Response.
void	setCompressionThreshold(int threshold) Set threshold number
void	setContentLength(int length)
void	setContentType(java.lang.String contentType) Set content type

Methods inherited from class javax.servlet.http.HttpServletResponseWrapper

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

Methods inherited from class javax.servlet.ServletResponseWrapper

getBufferSize, getCharacterEncoding, getContentType, getLocale, getResponse, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, 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, getContentType, getLocale, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setLocale

Field Detail

origResponse

protected javax.servlet.http.HttpServletResponse origResponse

Original response

info

protected static final java.lang.String info

Descriptive information about this Response implementation.

See Also:

Constant Field Values

stream

protected javax.servlet.ServletOutputStream stream

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

writer

protected java.io.PrintWriter writer

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

threshold

protected int threshold

The threshold number to compress

contentType

protected java.lang.String contentType

Content type

className

protected final java.lang.String className

logger

protected static final JFWLogger logger

Constructor Detail

CompressionServletResponseWrapper

public CompressionServletResponseWrapper(javax.servlet.http.HttpServletResponse response)

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

Method Detail

setContentType

public void setContentType(java.lang.String contentType)

Set content type

Specified by:

setContentType in interface javax.servlet.ServletResponse

Overrides:

setContentType in class javax.servlet.ServletResponseWrapper

setCompressionThreshold

public void setCompressionThreshold(int threshold)

Set threshold number

createOutputStream

public javax.servlet.ServletOutputStream createOutputStream()
                                                     throws java.io.IOException

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

Throws:

java.io.IOException - if an input/output error occurs

finishResponse

public void finishResponse()

Finish a response.

flushBuffer

public void flushBuffer()
                 throws java.io.IOException

Flush the buffer and commit this response.

Specified by:

flushBuffer in interface javax.servlet.ServletResponse

Overrides:

flushBuffer in class javax.servlet.ServletResponseWrapper

Throws:

java.io.IOException - if an input/output error occurs

getOutputStream

public javax.servlet.ServletOutputStream getOutputStream()
                                                  throws java.io.IOException

Return the servlet output stream associated with this Response.

Specified by:

getOutputStream in interface javax.servlet.ServletResponse

Overrides:

getOutputStream in class javax.servlet.ServletResponseWrapper

Throws:

java.lang.IllegalStateException - if getWriter has already been called for this response

java.io.IOException - if an input/output error occurs

getWriter

public java.io.PrintWriter getWriter()
                              throws java.io.IOException

Return the writer associated with this Response.

Specified by:

getWriter in interface javax.servlet.ServletResponse

Overrides:

getWriter in class javax.servlet.ServletResponseWrapper

Throws:

java.lang.IllegalStateException - if getOutputStream has already been called for this response

java.io.IOException - if an input/output error occurs

setContentLength

public void setContentLength(int length)

Specified by:

setContentLength in interface javax.servlet.ServletResponse

Overrides:

setContentLength in class javax.servlet.ServletResponseWrapper