Package org.apache.catalina.ssi

Class ResponseIncludeWrapper

java.lang.Object

javax.servlet.ServletResponseWrapper

javax.servlet.http.HttpServletResponseWrapper

org.apache.catalina.ssi.ResponseIncludeWrapper

All Implemented Interfaces:

HttpServletResponse, ServletResponse

public class ResponseIncludeWrapper
extends HttpServletResponseWrapper

An HttpServletResponseWrapper, used from SSIServletExternalResolver

Author:

Bip Thelin, David Becker

Field Summary

Fields

Modifier and Type	Field	Description
protected final ServletOutputStream	captureServletOutputStream	Our ServletOutputStream
protected long	lastModified
protected PrintWriter	printWriter
protected ServletOutputStream	servletOutputStream

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	Description
ResponseIncludeWrapper(HttpServletResponse response, ServletOutputStream captureServletOutputStream)	Initialize our wrapper with the current HttpServletResponse and ServletOutputStream.

Method Summary

Modifier and Type	Method	Description
void	addDateHeader(String name, long value)	The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object.
void	addHeader(String name, String value)	The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object.
void	flushOutputStreamOrWriter()	Flush the servletOutputStream or printWriter ( only one will be non-null ) This must be called after a requestDispatcher.include, since we can't assume that the included servlet flushed its stream.
long	getLastModified()	Returns the value of the last-modified header field.
ServletOutputStream	getOutputStream()	Return an OutputStream, throws an exception if a printwriter already been returned.
PrintWriter	getWriter()	Return a printwriter, throws an exception if an OutputStream already been returned.
void	setDateHeader(String name, long value)	The default behavior of this method is to call setDateHeader(String name, long date) on the wrapped response object.
void	setHeader(String name, String value)	The default behavior of this method is to return setHeader(String name, String value) on the wrapped response object.

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, reset, 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, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentLengthLong, setContentType, setLocale

Field Details

lastModified

protected long lastModified

captureServletOutputStream

protected final ServletOutputStream captureServletOutputStream

Our ServletOutputStream

servletOutputStream

protected ServletOutputStream servletOutputStream

printWriter

protected PrintWriter printWriter

Constructor Details

ResponseIncludeWrapper

public ResponseIncludeWrapper(HttpServletResponse response,
 ServletOutputStream captureServletOutputStream)

Initialize our wrapper with the current HttpServletResponse and ServletOutputStream.

Parameters:

response - The response to use

captureServletOutputStream - The ServletOutputStream to use

Method Details

flushOutputStreamOrWriter

public void flushOutputStreamOrWriter()
                               throws IOException

Flush the servletOutputStream or printWriter ( only one will be non-null ) This must be called after a requestDispatcher.include, since we can't assume that the included servlet flushed its stream.

Throws:

IOException - an IO error occurred

getWriter

public PrintWriter getWriter()
                      throws IOException

Return a printwriter, throws an exception if an OutputStream already been returned.

Specified by:

getWriter in interface ServletResponse

Overrides:

getWriter in class ServletResponseWrapper

Returns:

a PrintWriter object

Throws:

IOException - if the outputstream already been called

See Also:

• ServletResponse.getOutputStream()
• ServletResponse.setCharacterEncoding(java.lang.String)

getOutputStream

public ServletOutputStream getOutputStream()
                                    throws IOException

Return an OutputStream, throws an exception if a printwriter already been returned.

Specified by:

getOutputStream in interface ServletResponse

Overrides:

getOutputStream in class ServletResponseWrapper

Returns:

an OutputStream object

Throws:

IOException - if the printwriter already been called

See Also:

• ServletResponse.getWriter()

getLastModified

public long getLastModified()

Returns the value of the last-modified header field. The result is the number of milliseconds since January 1, 1970 GMT.

Returns:

the date the resource referenced by this ResponseIncludeWrapper was last modified, or -1 if not known.

addDateHeader

public void addDateHeader(String name,
 long value)

Description copied from class: javax.servlet.http.HttpServletResponseWrapper

The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object.

Specified by:

addDateHeader in interface HttpServletResponse

Overrides:

addDateHeader in class HttpServletResponseWrapper

Parameters:

name - the name of the header to set

value - the additional date value

See Also:

• HttpServletResponse.setDateHeader(java.lang.String, long)

addHeader

public void addHeader(String name,
 String value)

Description copied from class: javax.servlet.http.HttpServletResponseWrapper

The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object.

Specified by:

addHeader in interface HttpServletResponse

Overrides:

addHeader in class HttpServletResponseWrapper

Parameters:

name - the name of the header

value - the additional header value If it contains octet string, it should be encoded according to RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt)

See Also:

• HttpServletResponse.setHeader(java.lang.String, java.lang.String)

setDateHeader

public void setDateHeader(String name,
 long value)

Description copied from class: javax.servlet.http.HttpServletResponseWrapper

The default behavior of this method is to call setDateHeader(String name, long date) on the wrapped response object.

Specified by:

setDateHeader in interface HttpServletResponse

Overrides:

setDateHeader in class HttpServletResponseWrapper

Parameters:

name - the name of the header to set

value - the assigned date value

See Also:

• HttpServletResponse.containsHeader(java.lang.String)
• HttpServletResponse.addDateHeader(java.lang.String, long)

setHeader

public void setHeader(String name,
 String value)

Description copied from class: javax.servlet.http.HttpServletResponseWrapper

The default behavior of this method is to return setHeader(String name, String value) on the wrapped response object.

Specified by:

setHeader in interface HttpServletResponse

Overrides:

setHeader in class HttpServletResponseWrapper

Parameters:

name - the name of the header

value - the header value If it contains octet string, it should be encoded according to RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt)

See Also:

• HttpServletResponse.containsHeader(java.lang.String)
• HttpServletResponse.addHeader(java.lang.String, java.lang.String)