org.apache.catalina.filters

Class ExpiresFilter.XHttpServletResponse

java.lang.Object

javax.servlet.ServletResponseWrapper

javax.servlet.http.HttpServletResponseWrapper

org.apache.catalina.filters.ExpiresFilter.XHttpServletResponse

All Implemented Interfaces:

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

Enclosing class:

ExpiresFilter

public class ExpiresFilter.XHttpServletResponse
extends javax.servlet.http.HttpServletResponseWrapper

Wrapping extension of the HttpServletResponse to yrap the "Start Write Response Body" event.

For performance optimization : this extended response holds the lastModifiedHeader and cacheControlHeader values access to the slow HttpServletResponseWrapper.getHeader(String) and to spare the string to date to long conversion.

Field Summary

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

Constructors

Constructor and Description
XHttpServletResponse(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

Method Summary

Modifier and Type	Method and Description
void	addDateHeader(String name, long date)
void	addHeader(String name, String value)
String	getCacheControlHeader()
long	getLastModifiedHeader()
javax.servlet.ServletOutputStream	getOutputStream()
PrintWriter	getWriter()
boolean	isLastModifiedHeaderSet()
boolean	isWriteResponseBodyStarted()
void	reset()
void	setDateHeader(String name, long date)
void	setHeader(String name, String value)
void	setWriteResponseBodyStarted(boolean writeResponseBodyStarted)

Methods inherited from class javax.servlet.http.HttpServletResponseWrapper

addCookie, addIntHeader, containsHeader, encodeRedirectUrl, encodeRedirectURL, encodeUrl, encodeURL, getHeader, getHeaderNames, getHeaders, getStatus, sendError, sendError, sendRedirect, setIntHeader, setStatus, setStatus

Methods inherited from class javax.servlet.ServletResponseWrapper

flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getResponse, isCommitted, isWrapperFor, isWrapperFor, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentLengthLong, setContentType, 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

flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, isCommitted, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentLengthLong, setContentType, setLocale

Constructor Detail

XHttpServletResponse

public XHttpServletResponse(javax.servlet.http.HttpServletRequest request,
                            javax.servlet.http.HttpServletResponse response)

Method Detail

addDateHeader

public void addDateHeader(String name,
                          long date)

Specified by:

addDateHeader in interface javax.servlet.http.HttpServletResponse

Overrides:

addDateHeader in class javax.servlet.http.HttpServletResponseWrapper

addHeader

public void addHeader(String name,
                      String value)

Specified by:

addHeader in interface javax.servlet.http.HttpServletResponse

Overrides:

addHeader in class javax.servlet.http.HttpServletResponseWrapper

getCacheControlHeader

public String getCacheControlHeader()

getLastModifiedHeader

public long getLastModifiedHeader()

getOutputStream

public javax.servlet.ServletOutputStream getOutputStream()
                                                  throws IOException

Specified by:

getOutputStream in interface javax.servlet.ServletResponse

Overrides:

getOutputStream in class javax.servlet.ServletResponseWrapper

Throws:

IOException

getWriter

public PrintWriter getWriter()
                      throws IOException

Specified by:

getWriter in interface javax.servlet.ServletResponse

Overrides:

getWriter in class javax.servlet.ServletResponseWrapper

Throws:

IOException

isLastModifiedHeaderSet

public boolean isLastModifiedHeaderSet()

isWriteResponseBodyStarted

public boolean isWriteResponseBodyStarted()

reset

public void reset()

Specified by:

reset in interface javax.servlet.ServletResponse

Overrides:

reset in class javax.servlet.ServletResponseWrapper

setDateHeader

public void setDateHeader(String name,
                          long date)

Specified by:

setDateHeader in interface javax.servlet.http.HttpServletResponse

Overrides:

setDateHeader in class javax.servlet.http.HttpServletResponseWrapper

setHeader

public void setHeader(String name,
                      String value)

Specified by:

setHeader in interface javax.servlet.http.HttpServletResponse

Overrides:

setHeader in class javax.servlet.http.HttpServletResponseWrapper

setWriteResponseBodyStarted

public void setWriteResponseBodyStarted(boolean writeResponseBodyStarted)