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Response (Catalina Internal API Documentation)

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org.apache.catalina
Interface Response

All Known Subinterfaces:: HttpResponse

All Known Implementing Classes:: HttpResponseBase, HttpResponseWrapper, ResponseBase, ResponseWrapper

public interface Response

A Response is the Catalina-internal facade for a ServletResponse that is to be produced, based on the processing of a corresponding Request.

Version:: $Revision: 1.4.2.1 $ $Date: 2001/10/04 19:26:06 $
Author:: Craig R. McClanahan

Method Summary

javax.servlet.ServletOutputStream createOutputStream()
          Create and return a ServletOutputStream to write the content associated with this Response.

void finishResponse()
          Perform whatever actions are required to flush and close the output stream or writer, in a single operation.

Connector getConnector()
          Return the Connector through which this Response is returned.

int getContentCount()
          Return the number of bytes actually written to the output stream.

int getContentLength()
          Return the content length that was set or calculated for this Response.

java.lang.String getContentType()
          Return the content type that was set or calculated for this response, or null if no content type was set.

Context getContext()
          Return the Context with which this Response is associated.

boolean getIncluded()
          Return the "processing inside an include" flag.

java.lang.String getInfo()
          Return descriptive information about this Response implementation and the corresponding version number, in the format <description>/<version>.

java.io.PrintWriter getReporter()
          Return a PrintWriter that can be used to render error messages, regardless of whether a stream or writer has already been acquired.

Request getRequest()
          Return the Request with which this Response is associated.

javax.servlet.ServletResponse getResponse()
          Return the ServletResponse for which this object is the facade.

java.io.OutputStream getStream()
          Return the output stream associated with this Response.

boolean isAppCommitted()
          Application commit flag accessor.

boolean isError()
          Error flag accessor.

boolean isSuspended()
          Suspended flag accessor.

void recycle()
          Release all object references, and initialize instance variables, in preparation for reuse of this object.

void resetBuffer()
          Reset the data buffer but not any status or header information.

void setAppCommitted(boolean appCommitted)
          Set the application commit flag.

void setConnector(Connector connector)
          Set the Connector through which this Response is returned.

void setContext(Context context)
          Set the Context with which this Response is associated.

void setError()
          Set the error flag.

void setIncluded(boolean included)
          Set the "processing inside an include" flag.

void setRequest(Request request)
          Set the Request with which this Response is associated.

void setStream(java.io.OutputStream stream)
          Set the output stream associated with this Response.

void setSuspended(boolean suspended)
          Set the suspended flag.

Method Detail

getConnector


public Connector getConnector()

Return the Connector through which this Response is returned.

setConnector


public void setConnector(Connector connector)

Set the Connector through which this Response is returned.

Parameters:: connector - The new connector

getContentCount


public int getContentCount()

Return the number of bytes actually written to the output stream.

getContext


public Context getContext()

Return the Context with which this Response is associated.

setContext


public void setContext(Context context)

Set the Context with which this Response is associated. This should be called as soon as the appropriate Context is identified.

Parameters:: context - The associated Context

setAppCommitted


public void setAppCommitted(boolean appCommitted)

Set the application commit flag.

Parameters:: appCommitted - The new application committed flag value

isAppCommitted


public boolean isAppCommitted()

Application commit flag accessor.

getIncluded


public boolean getIncluded()

Return the "processing inside an include" flag.

setIncluded


public void setIncluded(boolean included)

Set the "processing inside an include" flag.

Parameters:: included - true if we are currently inside a RequestDispatcher.include(), else false

getInfo


public java.lang.String getInfo()

Return descriptive information about this Response implementation and the corresponding version number, in the format <description>/<version>.

getRequest


public Request getRequest()

Return the Request with which this Response is associated.

setRequest


public void setRequest(Request request)

Set the Request with which this Response is associated.

Parameters:: request - The new associated request

getResponse


public javax.servlet.ServletResponse getResponse()

Return the ServletResponse for which this object is the facade.

getStream


public java.io.OutputStream getStream()

Return the output stream associated with this Response.

setStream


public void setStream(java.io.OutputStream stream)

Set the output stream associated with this Response.

Parameters:: stream - The new output stream

setSuspended


public void setSuspended(boolean suspended)

Set the suspended flag.

Parameters:: suspended - The new suspended flag value

isSuspended


public boolean isSuspended()

Suspended flag accessor.

setError


public void setError()

Set the error flag.

isError


public boolean isError()

Error flag accessor.

createOutputStream


public javax.servlet.ServletOutputStream createOutputStream()
                                                     throws java.io.IOException

Create and return a ServletOutputStream to write the content associated with this Response.

Throws:: java.io.IOException - if an input/output error occurs

finishResponse


public void finishResponse()
                    throws java.io.IOException

Perform whatever actions are required to flush and close the output stream or writer, in a single operation.

Throws:: java.io.IOException - if an input/output error occurs

getContentLength


public int getContentLength()

Return the content length that was set or calculated for this Response.

getContentType


public java.lang.String getContentType()

Return the content type that was set or calculated for this response, or null if no content type was set.

getReporter


public java.io.PrintWriter getReporter()

Return a PrintWriter that can be used to render error messages, regardless of whether a stream or writer has already been acquired.

Returns:: Writer which can be used for error reports. If the response is not an error report returned using sendError or triggered by an unexpected exception thrown during the servlet processing (and only in that case), null will be returned if the response stream has already been used.

recycle


public void recycle()

Release all object references, and initialize instance variables, in preparation for reuse of this object.

resetBuffer


public void resetBuffer()

Reset the data buffer but not any status or header information.