org.apache.jasper.servlet

Class JspCServletContext

java.lang.Object

org.apache.jasper.servlet.JspCServletContext

All Implemented Interfaces:

javax.servlet.ServletContext

public class JspCServletContext
extends java.lang.Object
implements javax.servlet.ServletContext

Simple ServletContext implementation without HTTP-specific methods.

Author:

Peter Rossbach (pr@webapp.de)

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Hashtable	myAttributes Servlet context attributes.
protected java.io.PrintWriter	myLogWriter The log writer we will write log messages to.
protected java.net.URL	myResourceBaseURL The base URL (document root) for this context.

Constructor Summary

Constructors

Constructor and Description
JspCServletContext(java.io.PrintWriter aLogWriter, java.net.URL aResourceBaseURL) Create a new instance of this ServletContext implementation.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	getAttribute(java.lang.String name) Return the specified context attribute, if any.
java.util.Enumeration	getAttributeNames() Return an enumeration of context attribute names.
javax.servlet.ServletContext	getContext(java.lang.String uripath) Return the servlet context for the specified path.
java.lang.String	getInitParameter(java.lang.String name) Return the specified context initialization parameter.
java.util.Enumeration	getInitParameterNames() Return an enumeration of the names of context initialization parameters.
int	getMajorVersion() Return the Servlet API major version number.
java.lang.String	getMimeType(java.lang.String file) Return the MIME type for the specified filename.
int	getMinorVersion() Return the Servlet API minor version number.
javax.servlet.RequestDispatcher	getNamedDispatcher(java.lang.String name) Return a request dispatcher for the specified servlet name.
java.lang.String	getRealPath(java.lang.String path) Return the real path for the specified context-relative virtual path.
javax.servlet.RequestDispatcher	getRequestDispatcher(java.lang.String path) Return a request dispatcher for the specified context-relative path.
java.net.URL	getResource(java.lang.String path) Return a URL object of a resource that is mapped to the specified context-relative path.
java.io.InputStream	getResourceAsStream(java.lang.String path) Return an InputStream allowing access to the resource at the specified context-relative path.
java.util.Set	getResourcePaths(java.lang.String path) Return the set of resource paths for the "directory" at the specified context path.
java.lang.String	getServerInfo() Return descriptive information about this server.
javax.servlet.Servlet	getServlet(java.lang.String name) Deprecated. This method has been deprecated with no replacement
java.lang.String	getServletContextName() Return the name of this servlet context.
java.util.Enumeration	getServletNames() Deprecated. This method has been deprecated with no replacement
java.util.Enumeration	getServlets() Deprecated. This method has been deprecated with no replacement
void	log(java.lang.Exception exception, java.lang.String message) Deprecated. Use log(String,Throwable) instead
void	log(java.lang.String message) Log the specified message.
void	log(java.lang.String message, java.lang.Throwable exception) Log the specified message and exception.
void	removeAttribute(java.lang.String name) Remove the specified context attribute.
void	setAttribute(java.lang.String name, java.lang.Object value) Set or replace the specified context attribute.

Methods inherited from class java.lang.Object

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

Field Detail

myAttributes

protected java.util.Hashtable myAttributes

Servlet context attributes.

myLogWriter

protected java.io.PrintWriter myLogWriter

The log writer we will write log messages to.

myResourceBaseURL

protected java.net.URL myResourceBaseURL

The base URL (document root) for this context.

Constructor Detail

JspCServletContext

public JspCServletContext(java.io.PrintWriter aLogWriter,
                  java.net.URL aResourceBaseURL)

Create a new instance of this ServletContext implementation.

Parameters:

aLogWriter - PrintWriter which is used for log() calls

aResourceBaseURL - Resource base URL

Method Detail

getAttribute

public java.lang.Object getAttribute(java.lang.String name)

Return the specified context attribute, if any.

Specified by:

getAttribute in interface javax.servlet.ServletContext

Parameters:

name - Name of the requested attribute

getAttributeNames

public java.util.Enumeration getAttributeNames()

Return an enumeration of context attribute names.

Specified by:

getAttributeNames in interface javax.servlet.ServletContext

getContext

public javax.servlet.ServletContext getContext(java.lang.String uripath)

Return the servlet context for the specified path.

Specified by:

getContext in interface javax.servlet.ServletContext

Parameters:

uripath - Server-relative path starting with '/'

getInitParameter

public java.lang.String getInitParameter(java.lang.String name)

Return the specified context initialization parameter.

Specified by:

getInitParameter in interface javax.servlet.ServletContext

Parameters:

name - Name of the requested parameter

getInitParameterNames

public java.util.Enumeration getInitParameterNames()

Return an enumeration of the names of context initialization parameters.

Specified by:

getInitParameterNames in interface javax.servlet.ServletContext

getMajorVersion

public int getMajorVersion()

Return the Servlet API major version number.

Specified by:

getMajorVersion in interface javax.servlet.ServletContext

getMimeType

public java.lang.String getMimeType(java.lang.String file)

Return the MIME type for the specified filename.

Specified by:

getMimeType in interface javax.servlet.ServletContext

Parameters:

file - Filename whose MIME type is requested

getMinorVersion

public int getMinorVersion()

Return the Servlet API minor version number.

Specified by:

getMinorVersion in interface javax.servlet.ServletContext

getNamedDispatcher

public javax.servlet.RequestDispatcher getNamedDispatcher(java.lang.String name)

Return a request dispatcher for the specified servlet name.

Specified by:

getNamedDispatcher in interface javax.servlet.ServletContext

Parameters:

name - Name of the requested servlet

getRealPath

public java.lang.String getRealPath(java.lang.String path)

Return the real path for the specified context-relative virtual path.

Specified by:

getRealPath in interface javax.servlet.ServletContext

Parameters:

path - The context-relative virtual path to resolve

getRequestDispatcher

public javax.servlet.RequestDispatcher getRequestDispatcher(java.lang.String path)

Return a request dispatcher for the specified context-relative path.

Specified by:

getRequestDispatcher in interface javax.servlet.ServletContext

Parameters:

path - Context-relative path for which to acquire a dispatcher

getResource

public java.net.URL getResource(java.lang.String path)
                         throws java.net.MalformedURLException

Return a URL object of a resource that is mapped to the specified context-relative path.

Specified by:

getResource in interface javax.servlet.ServletContext

Parameters:

path - Context-relative path of the desired resource

Throws:

java.net.MalformedURLException - if the resource path is not properly formed

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String path)

Return an InputStream allowing access to the resource at the specified context-relative path.

Specified by:

getResourceAsStream in interface javax.servlet.ServletContext

Parameters:

path - Context-relative path of the desired resource

getResourcePaths

public java.util.Set getResourcePaths(java.lang.String path)

Return the set of resource paths for the "directory" at the specified context path.

Specified by:

getResourcePaths in interface javax.servlet.ServletContext

Parameters:

path - Context-relative base path

getServerInfo

public java.lang.String getServerInfo()

Return descriptive information about this server.

Specified by:

getServerInfo in interface javax.servlet.ServletContext

getServlet

public javax.servlet.Servlet getServlet(java.lang.String name)
                                 throws javax.servlet.ServletException

Deprecated. This method has been deprecated with no replacement

Return a null reference for the specified servlet name.

Specified by:

getServlet in interface javax.servlet.ServletContext

Parameters:

name - Name of the requested servlet

Throws:

javax.servlet.ServletException

getServletContextName

public java.lang.String getServletContextName()

Return the name of this servlet context.

Specified by:

getServletContextName in interface javax.servlet.ServletContext

getServletNames

public java.util.Enumeration getServletNames()

Deprecated. This method has been deprecated with no replacement

Return an empty enumeration of servlet names.

Specified by:

getServletNames in interface javax.servlet.ServletContext

getServlets

public java.util.Enumeration getServlets()

Deprecated. This method has been deprecated with no replacement

Return an empty enumeration of servlets.

Specified by:

getServlets in interface javax.servlet.ServletContext

log

public void log(java.lang.String message)

Log the specified message.

Specified by:

log in interface javax.servlet.ServletContext

Parameters:

message - The message to be logged

log

public void log(java.lang.Exception exception,
       java.lang.String message)

Deprecated. Use log(String,Throwable) instead

Log the specified message and exception.

Specified by:

log in interface javax.servlet.ServletContext

Parameters:

exception - The exception to be logged

message - The message to be logged

log

public void log(java.lang.String message,
       java.lang.Throwable exception)

Log the specified message and exception.

Specified by:

log in interface javax.servlet.ServletContext

Parameters:

message - The message to be logged

exception - The exception to be logged

removeAttribute

public void removeAttribute(java.lang.String name)

Remove the specified context attribute.

Specified by:

removeAttribute in interface javax.servlet.ServletContext

Parameters:

name - Name of the attribute to remove

setAttribute

public void setAttribute(java.lang.String name,
                java.lang.Object value)

Set or replace the specified context attribute.

Specified by:

setAttribute in interface javax.servlet.ServletContext

Parameters:

name - Name of the context attribute to set

value - Corresponding attribute value