com.opensymphony.module.sitemesh.filter
Class PageResponseWrapper

java.lang.Object
  javax.servlet.ServletResponseWrapper
      javax.servlet.http.HttpServletResponseWrapper
          com.opensymphony.module.sitemesh.filter.PageResponseWrapper

All Implemented Interfaces:

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

public class PageResponseWrapper
extends javax.servlet.http.HttpServletResponseWrapper

Implementation of HttpServletResponseWrapper that captures page data instead of sending to the writer.

Should be used in filter-chains or when forwarding/including pages using a RequestDispatcher.

Version:

$Revision: 1.17 $

Author:

Joe Walnes, Scott Farquhar

Field Summary

private boolean	aborted
private Buffer	buffer
private boolean	parseablePage
private PageParserSelector	parserSelector
private RoutablePrintWriter	routablePrintWriter
private RoutableServletOutputStream	routableServletOutputStream

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

PageResponseWrapper(javax.servlet.http.HttpServletResponse response, PageParserSelector parserSelector)

Method Summary

void	activateSiteMesh(String contentType, String encoding)
void	addHeader(String name, String value) Prevent content-length being set if page is parseable.
private void	deactivateSiteMesh()
void	flushBuffer() Prevent buffer from being flushed if this is a page being parsed.
char[]	getContents()
javax.servlet.ServletOutputStream	getOutputStream()
Page	getPage()
PrintWriter	getWriter()
boolean	isUsingStream()
void	sendError(int sc)
void	sendError(int sc, String msg)
void	sendRedirect(String location)
void	setContentLength(int contentLength) Prevent content-length being set if page is parseable.
void	setContentType(String type) Set the content-type of the request and store it so it can be passed to the PageParser.
void	setHeader(String name, String value) Prevent content-length being set if page is parseable.
void	setStatus(int sc) If 'not modified' (304) HTTP status is being sent - then abort parsing, as there shouldn't be any body

Methods inherited from class javax.servlet.http.HttpServletResponseWrapper

addCookie, addDateHeader, addIntHeader, containsHeader, encodeRedirectUrl, encodeRedirectURL, encodeUrl, encodeURL, setDateHeader, setIntHeader, 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

routablePrintWriter

private final RoutablePrintWriter routablePrintWriter

routableServletOutputStream

private final RoutableServletOutputStream routableServletOutputStream

parserSelector

private final PageParserSelector parserSelector

buffer

private Buffer buffer

aborted

private boolean aborted

parseablePage

private boolean parseablePage

Constructor Detail

PageResponseWrapper

public PageResponseWrapper(javax.servlet.http.HttpServletResponse response,
                           PageParserSelector parserSelector)

Method Detail

setContentType

public void setContentType(String type)

Set the content-type of the request and store it so it can be passed to the PageParser.

Specified by:

setContentType in interface javax.servlet.ServletResponse

Overrides:

setContentType in class javax.servlet.ServletResponseWrapper

activateSiteMesh

public void activateSiteMesh(String contentType,
                             String encoding)

deactivateSiteMesh

private void deactivateSiteMesh()

setContentLength

public void setContentLength(int contentLength)

Prevent content-length being set if page is parseable.

Specified by:

setContentLength in interface javax.servlet.ServletResponse

Overrides:

setContentLength in class javax.servlet.ServletResponseWrapper

flushBuffer

public void flushBuffer()
                 throws IOException

Prevent buffer from being flushed if this is a page being parsed.

Specified by:

flushBuffer in interface javax.servlet.ServletResponse

Overrides:

flushBuffer in class javax.servlet.ServletResponseWrapper

Throws:

IOException

setHeader

public void setHeader(String name,
                      String value)

Prevent content-length being set if page is parseable.

Specified by:

setHeader in interface javax.servlet.http.HttpServletResponse

Overrides:

setHeader in class javax.servlet.http.HttpServletResponseWrapper

addHeader

public void addHeader(String name,
                      String value)

Prevent content-length being set if page is parseable.

Specified by:

addHeader in interface javax.servlet.http.HttpServletResponse

Overrides:

addHeader in class javax.servlet.http.HttpServletResponseWrapper

setStatus

public void setStatus(int sc)

If 'not modified' (304) HTTP status is being sent - then abort parsing, as there shouldn't be any body

Specified by:

setStatus in interface javax.servlet.http.HttpServletResponse

Overrides:

setStatus in class javax.servlet.http.HttpServletResponseWrapper

getOutputStream

public javax.servlet.ServletOutputStream getOutputStream()

Specified by:

getOutputStream in interface javax.servlet.ServletResponse

Overrides:

getOutputStream in class javax.servlet.ServletResponseWrapper

getWriter

public PrintWriter getWriter()

Specified by:

getWriter in interface javax.servlet.ServletResponse

Overrides:

getWriter in class javax.servlet.ServletResponseWrapper

getPage

public Page getPage()
             throws IOException

Throws:

IOException

sendError

public void sendError(int sc)
               throws IOException

Specified by:

sendError in interface javax.servlet.http.HttpServletResponse

Overrides:

sendError in class javax.servlet.http.HttpServletResponseWrapper

Throws:

IOException

sendError

public void sendError(int sc,
                      String msg)
               throws IOException

Specified by:

sendError in interface javax.servlet.http.HttpServletResponse

Overrides:

sendError in class javax.servlet.http.HttpServletResponseWrapper

Throws:

IOException

sendRedirect

public void sendRedirect(String location)
                  throws IOException

Specified by:

sendRedirect in interface javax.servlet.http.HttpServletResponse

Overrides:

sendRedirect in class javax.servlet.http.HttpServletResponseWrapper

Throws:

IOException

isUsingStream

public boolean isUsingStream()

getContents

public char[] getContents()
                   throws IOException

Throws:

IOException