javax.servlet
Class ServletResponseWrapper

java.lang.Object
  extended by javax.servlet.ServletResponseWrapper
All Implemented Interfaces:
ServletResponse
Direct Known Subclasses:
HttpServletResponseWrapper

public class ServletResponseWrapper
extends 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
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.
 String getCharacterEncoding()
          The default behavior of this method is to return getCharacterEncoding() on the wrapped response object.
 String getContentType()
          The default behavior of this method is to return getContentType() on the wrapped response object.
 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.
 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.
 boolean isWrapperFor(Class wrappedType)
           
 boolean isWrapperFor(ServletResponse wrapped)
           
 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 setCharacterEncoding(String charset)
          The default behavior of this method is to call setCharacterEncoding(String charset) 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(String type)
          The default behavior of this method is to call setContentType(String type) on the wrapped response object.
 void setLocale(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:
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:
IllegalArgumentException - if the response is null.

setCharacterEncoding

public void setCharacterEncoding(String charset)
The default behavior of this method is to call setCharacterEncoding(String charset) on the wrapped response object.

Specified by:
setCharacterEncoding in interface ServletResponse
Parameters:
charset - a String specifying only the character set defined by IANA Character Sets (http://www.iana.org/assignments/character-sets)
Since:
2.4
See Also:
#setLocale

getCharacterEncoding

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

Specified by:
getCharacterEncoding in interface ServletResponse
Returns:
a String specifying the name of the character encoding, for example, UTF-8

getOutputStream

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

Specified by:
getOutputStream in interface ServletResponse
Returns:
a ServletOutputStream for writing binary data
Throws:
IOException - if an input or output exception occurred
See Also:
ServletResponse.getWriter()

getWriter

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

Specified by:
getWriter in interface ServletResponse
Returns:
a PrintWriter object that can return character data to the client
Throws:
IOException - if an input or output exception occurred
See Also:
ServletResponse.getOutputStream(), ServletResponse.setCharacterEncoding(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
Parameters:
len - an integer specifying the length of the content being returned to the client; sets the Content-Length header

setContentType

public void setContentType(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
Parameters:
type - a String specifying the MIME type of the content
See Also:
ServletResponse.setLocale(java.util.Locale), ServletResponse.setCharacterEncoding(java.lang.String), ServletResponse.getOutputStream(), ServletResponse.getWriter()

getContentType

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

Specified by:
getContentType in interface ServletResponse
Returns:
a String specifying the content type, for example, text/html; charset=UTF-8, or null
Since:
2.4

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
Parameters:
size - the preferred buffer size
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
Returns:
the actual buffer size used
See Also:
ServletResponse.setBufferSize(int), ServletResponse.flushBuffer(), ServletResponse.isCommitted(), ServletResponse.reset()

flushBuffer

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

Specified by:
flushBuffer in interface ServletResponse
Throws:
IOException
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
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
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
See Also:
ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.isCommitted(), ServletResponse.reset()

setLocale

public void setLocale(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
Parameters:
loc - the locale of the response
See Also:
ServletResponse.getLocale(), ServletResponse.setContentType(java.lang.String), ServletResponse.setCharacterEncoding(java.lang.String)

getLocale

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

Specified by:
getLocale in interface ServletResponse
See Also:
ServletResponse.setLocale(java.util.Locale)

isWrapperFor

public boolean isWrapperFor(ServletResponse wrapped)
Parameters:
wrapped -
Since:
Servlet 3.0 TODO SERVLET3 - Add comments

isWrapperFor

public boolean isWrapperFor(Class wrappedType)
Parameters:
wrappedType -
Since:
Servlet 3.0 TODO SERVLET3 - Add comments

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