javax.servlet
Class ServletResponseWrapper

java.lang.Object
  |
  +--javax.servlet.ServletResponseWrapper

All Implemented Interfaces:

ServletResponse

Direct Known Subclasses:

HttpServletResponseWrapper

public class ServletResponseWrapper

extends java.lang.Object

implements ServletResponse

Provides a convenient implementation of the ServletResponse interface that can be subclassed by developers wishing to adapt the response from a Servlet. This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped response object.

Since:

v 2.3

Version:

$Version$

Author:

Various

See Also:

ServletResponse

Constructor Summary

ServletResponseWrapper(ServletResponse response)
Creates a ServletResponse adaptor wrapping the given response object.

Method Summary

void	flushBuffer() The default behavior of this method is to call flushBuffer() on the wrapped response object.
int	getBufferSize() The default behavior of this method is to return getBufferSize() on the wrapped response object.
java.lang.String	getCharacterEncoding() The default behavior of this method is to return getCharacterEncoding() on the wrapped response object.
java.util.Locale	getLocale() The default behavior of this method is to return getLocale() on the wrapped response object.
ServletOutputStream	getOutputStream() The default behavior of this method is to return getOutputStream() on the wrapped response object.
ServletResponse	getResponse() Return the wrapped ServletResponse object.
java.io.PrintWriter	getWriter() The default behavior of this method is to return getWriter() on the wrapped response object.
boolean	isCommitted() The default behavior of this method is to return isCommitted() on the wrapped response object.
void	reset() The default behavior of this method is to call reset() on the wrapped response object.
void	resetBuffer() The default behavior of this method is to call resetBuffer() on the wrapped response object.
void	setBufferSize(int size) The default behavior of this method is to call setBufferSize(int size) on the wrapped response object.
void	setContentLength(int len) The default behavior of this method is to call setContentLength(int len) on the wrapped response object.
void	setContentType(java.lang.String type) The default behavior of this method is to call setContentType(String type) on the wrapped response object.
void	setLocale(java.util.Locale loc) The default behavior of this method is to call setLocale(Locale loc) on the wrapped response object.
void	setResponse(ServletResponse response) Sets the response being wrapped.

Methods inherited from class java.lang.Object

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

Constructor Detail

ServletResponseWrapper

public ServletResponseWrapper(ServletResponse response)

Creates a ServletResponse adaptor wrapping the given response object.

Throws:

java.lang.IllegalArgumentException - if the response is null.

Method Detail

getResponse

public ServletResponse getResponse()

Return the wrapped ServletResponse object.

setResponse

public void setResponse(ServletResponse response)

Sets the response being wrapped.

Throws:

java.lang.IllegalArgumentException - if the response is null.

getCharacterEncoding

public java.lang.String getCharacterEncoding()

The default behavior of this method is to return getCharacterEncoding() on the wrapped response object.

Specified by:

getCharacterEncoding in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Returns:

a String specifying the name of the charset, for example, ISO-8859-1

getOutputStream

public ServletOutputStream getOutputStream()
                                    throws java.io.IOException

The default behavior of this method is to return getOutputStream() on the wrapped response object.

Specified by:

getOutputStream in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Returns:

a ServletOutputStream for writing binary data

Throws:

java.lang.IllegalStateException - if the getWriter method has been called on this response

java.io.IOException - if an input or output exception occurred

See Also:

ServletResponse.getWriter()

getWriter

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

The default behavior of this method is to return getWriter() on the wrapped response object.

Specified by:

getWriter in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Returns:

a PrintWriter object that can return character data to the client

Throws:

java.io.UnsupportedEncodingException - if the charset specified in setContentType cannot be used

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

java.io.IOException - if an input or output exception occurred

See Also:

ServletResponse.getOutputStream(), ServletResponse.setContentType(java.lang.String)

setContentLength

public void setContentLength(int len)

The default behavior of this method is to call setContentLength(int len) on the wrapped response object.

Specified by:

setContentLength in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Parameters:

len - an integer specifying the length of the content being returned to the client; sets the Content-Length header

setContentType

public void setContentType(java.lang.String type)

The default behavior of this method is to call setContentType(String type) on the wrapped response object.

Specified by:

setContentType in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Parameters:

type - a String specifying the MIME type of the content

See Also:

ServletResponse.getOutputStream(), ServletResponse.getWriter()

setBufferSize

public void setBufferSize(int size)

The default behavior of this method is to call setBufferSize(int size) on the wrapped response object.

Specified by:

setBufferSize in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Parameters:

size - the preferred buffer size

Throws:

java.lang.IllegalStateException - if this method is called after content has been written

See Also:

ServletResponse.getBufferSize(), ServletResponse.flushBuffer(), ServletResponse.isCommitted(), ServletResponse.reset()

getBufferSize

public int getBufferSize()

The default behavior of this method is to return getBufferSize() on the wrapped response object.

Specified by:

getBufferSize in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Returns:

the actual buffer size used

See Also:

ServletResponse.setBufferSize(int), ServletResponse.flushBuffer(), ServletResponse.isCommitted(), ServletResponse.reset()

flushBuffer

public void flushBuffer()
                 throws java.io.IOException

The default behavior of this method is to call flushBuffer() on the wrapped response object.

Specified by:

flushBuffer in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

See Also:

ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.isCommitted(), ServletResponse.reset()

isCommitted

public boolean isCommitted()

The default behavior of this method is to return isCommitted() on the wrapped response object.

Specified by:

isCommitted in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Returns:

a boolean indicating if the response has been committed

See Also:

ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.flushBuffer(), ServletResponse.reset()

reset

public void reset()

The default behavior of this method is to call reset() on the wrapped response object.

Specified by:

reset in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Throws:

java.lang.IllegalStateException - if the response has already been committed

See Also:

ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.flushBuffer(), ServletResponse.isCommitted()

resetBuffer

public void resetBuffer()

The default behavior of this method is to call resetBuffer() on the wrapped response object.

Specified by:

resetBuffer in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

See Also:

ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.isCommitted(), ServletResponse.reset()

setLocale

public void setLocale(java.util.Locale loc)

The default behavior of this method is to call setLocale(Locale loc) on the wrapped response object.

Specified by:

setLocale in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

Parameters:

loc - the locale of the response

See Also:

ServletResponse.getLocale()

getLocale

public java.util.Locale getLocale()

The default behavior of this method is to return getLocale() on the wrapped response object.

Specified by:

getLocale in interface ServletResponse

Following copied from interface: javax.servlet.ServletResponse

See Also:

ServletResponse.setLocale(java.util.Locale)