org.apache.taglibs.standard.lang.jstl.test.PageContextImpl Maven / Gradle / Ivy
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package org.apache.taglibs.standard.lang.jstl.test;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.el.ExpressionEvaluator;
import javax.servlet.jsp.el.VariableResolver;
/**
*
* This is a "dummy" implementation of PageContext whose only
* purpose is to serve the attribute getter/setter API's.
*
* @author Nathan Abramson - Art Technology Group
* @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: kchung $
**/
public class PageContextImpl
extends PageContext
{
//-------------------------------------
// Properties
//-------------------------------------
//-------------------------------------
// Member variables
//-------------------------------------
Map mPage = Collections.synchronizedMap (new HashMap ());
Map mRequest = Collections.synchronizedMap (new HashMap ());
Map mSession = Collections.synchronizedMap (new HashMap ());
Map mApp = Collections.synchronizedMap (new HashMap ());
//-------------------------------------
/**
*
* Constructor
**/
public PageContextImpl ()
{
}
//-------------------------------------
// PageContext methods
//-------------------------------------
public void initialize (Servlet servlet,
ServletRequest request,
ServletResponse response,
String errorPageURL,
boolean needSession,
int bufferSize,
boolean autoFlush)
{
}
//-------------------------------------
public void release ()
{
}
//-------------------------------------
public void setAttribute (String name,
Object attribute)
{
mPage.put (name, attribute);
}
//-------------------------------------
public void setAttribute (String name,
Object attribute,
int scope)
{
switch (scope) {
case PAGE_SCOPE:
mPage.put (name, attribute);
break;
case REQUEST_SCOPE:
mRequest.put (name, attribute);
break;
case SESSION_SCOPE:
mSession.put (name, attribute);
break;
case APPLICATION_SCOPE:
mApp.put (name, attribute);
break;
default:
throw new IllegalArgumentException ("Bad scope " + scope);
}
}
//-------------------------------------
public Object getAttribute (String name)
{
return mPage.get (name);
}
//-------------------------------------
public Object getAttribute (String name,
int scope)
{
switch (scope) {
case PAGE_SCOPE:
return mPage.get (name);
case REQUEST_SCOPE:
return mRequest.get (name);
case SESSION_SCOPE:
return mSession.get (name);
case APPLICATION_SCOPE:
return mApp.get (name);
default:
throw new IllegalArgumentException ("Bad scope " + scope);
}
}
//-------------------------------------
public Object findAttribute (String name)
{
if (mPage.containsKey (name)) {
return mPage.get (name);
}
else if (mRequest.containsKey (name)) {
return mRequest.get (name);
}
else if (mSession.containsKey (name)) {
return mSession.get (name);
}
else if (mApp.containsKey (name)) {
return mApp.get (name);
}
else {
return null;
}
}
//-------------------------------------
public void removeAttribute (String name)
{
if (mPage.containsKey (name)) {
mPage.remove (name);
}
else if (mRequest.containsKey (name)) {
mRequest.remove (name);
}
else if (mSession.containsKey (name)) {
mSession.remove (name);
}
else if (mApp.containsKey (name)) {
mApp.remove (name);
}
}
//-------------------------------------
public void removeAttribute (String name,
int scope)
{
switch (scope) {
case PAGE_SCOPE:
mPage.remove (name);
break;
case REQUEST_SCOPE:
mRequest.remove (name);
break;
case SESSION_SCOPE:
mSession.remove (name);
break;
case APPLICATION_SCOPE:
mApp.remove (name);
break;
default:
throw new IllegalArgumentException ("Bad scope " + scope);
}
}
//-------------------------------------
public int getAttributesScope (String name)
{
if (mPage.containsKey (name)) {
return PAGE_SCOPE;
}
else if (mRequest.containsKey (name)) {
return REQUEST_SCOPE;
}
else if (mSession.containsKey (name)) {
return SESSION_SCOPE;
}
else if (mApp.containsKey (name)) {
return APPLICATION_SCOPE;
}
else {
return 0;
}
}
//-------------------------------------
public Enumeration getAttributeNamesInScope (int scope)
{
return null;
}
//-------------------------------------
public JspWriter getOut ()
{
return null;
}
//-------------------------------------
public HttpSession getSession ()
{
return null;
}
//-------------------------------------
public Object getPage ()
{
return null;
}
//-------------------------------------
public ServletRequest getRequest ()
{
return null;
}
//-------------------------------------
public ServletResponse getResponse ()
{
return null;
}
//-------------------------------------
public Exception getException ()
{
return null;
}
//-------------------------------------
public ServletConfig getServletConfig ()
{
return null;
}
//-------------------------------------
public ServletContext getServletContext ()
{
return null;
}
//-------------------------------------
public void forward (String path)
{
}
//-------------------------------------
public void include (String path)
{
}
//-------------------------------------
public void handlePageException (Exception exc)
{
}
//-------------------------------------
public void handlePageException (Throwable exc)
{
}
//-------------------------------------
// Since JSP 2.0
public void include(java.lang.String relativeUrlPath, boolean flush) {}
public ExpressionEvaluator getExpressionEvaluator() { return null; }
public VariableResolver getVariableResolver() { return null; }
// Since JSP 2.1
public javax.el.ELContext getELContext() { return null; }
}