/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.mock.web;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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;
import org.springframework.util.Assert;
/**
* Mock implementation of the {@link javax.servlet.jsp.PageContext} interface.
*
* <p>Used for testing the web framework; only necessary for testing
* applications when testing custom JSP tags.
*
* <p>Note: Expects initialization via the constructor rather than via the
* <code>PageContext.initialize</code> method. Does not support writing to
* a JspWriter, request dispatching, and <code>handlePageException</code> calls.
*
* @author Juergen Hoeller
* @since 1.0.2
*/
public class MockPageContext extends PageContext {
private final ServletContext servletContext;
private final HttpServletRequest request;
private final HttpServletResponse response;
private final ServletConfig servletConfig;
private final Hashtable attributes = new Hashtable();
private JspWriter out;
/**
* Create new MockPageContext with a default {@link MockServletContext},
* {@link MockHttpServletRequest}, {@link MockHttpServletResponse},
* {@link MockServletConfig}.
*/
public MockPageContext() {
this(null, null, null, null);
}
/**
* Create new MockPageContext with a default {@link MockHttpServletRequest},
* {@link MockHttpServletResponse}, {@link MockServletConfig}.
* @param servletContext the ServletContext that the JSP page runs in
* (only necessary when actually accessing the ServletContext)
*/
public MockPageContext(ServletContext servletContext) {
this(servletContext, null, null, null);
}
/**
* Create new MockPageContext with a MockHttpServletResponse,
* MockServletConfig.
* @param servletContext the ServletContext that the JSP page runs in
* @param request the current HttpServletRequest
* (only necessary when actually accessing the request)
*/
public MockPageContext(ServletContext servletContext, HttpServletRequest request) {
this(servletContext, request, null, null);
}
/**
* Create new MockPageContext with a MockServletConfig.
* @param servletContext the ServletContext that the JSP page runs in
* @param request the current HttpServletRequest
* @param response the current HttpServletResponse
* (only necessary when actually writing to the response)
*/
public MockPageContext(ServletContext servletContext, HttpServletRequest request, HttpServletResponse response) {
this(servletContext, request, response, null);
}
/**
* Create new MockServletConfig.
* @param servletContext the ServletContext that the JSP page runs in
* @param request the current HttpServletRequest
* @param response the current HttpServletResponse
* @param servletConfig the ServletConfig (hardly ever accessed from within a tag)
*/
public MockPageContext(ServletContext servletContext, HttpServletRequest request,
HttpServletResponse response, ServletConfig servletConfig) {
this.servletContext = (servletContext != null ? servletContext : new MockServletContext());
this.request = (request != null ? request : new MockHttpServletRequest(servletContext));
this.response = (response != null ? response : new MockHttpServletResponse());
this.servletConfig = (servletConfig != null ? servletConfig : new MockServletConfig(servletContext));
}
public void initialize(
Servlet servlet, ServletRequest request, ServletResponse response,
String errorPageURL, boolean needsSession, int bufferSize, boolean autoFlush) {
throw new UnsupportedOperationException("Use appropriate constructor");
}
public void release() {
}
public void setAttribute(String name, Object value) {
Assert.notNull(name, "Attribute name must not be null");
if (value != null) {
this.attributes.put(name, value);
}
else {
this.attributes.remove(name);
}
}
public void setAttribute(String name, Object value, int scope) {
Assert.notNull(name, "Attribute name must not be null");
switch (scope) {
case PAGE_SCOPE:
setAttribute(name, value);
break;
case REQUEST_SCOPE:
this.request.setAttribute(name, value);
break;
case SESSION_SCOPE:
this.request.getSession().setAttribute(name, value);
break;
case APPLICATION_SCOPE:
this.servletContext.setAttribute(name, value);
break;
default:
throw new IllegalArgumentException("Invalid scope: " + scope);
}
}
public Object getAttribute(String name) {
Assert.notNull(name, "Attribute name must not be null");
return this.attributes.get(name);
}
public Object getAttribute(String name, int scope) {
Assert.notNull(name, "Attribute name must not be null");
switch (scope) {
case PAGE_SCOPE:
return getAttribute(name);
case REQUEST_SCOPE:
return this.request.getAttribute(name);
case SESSION_SCOPE:
HttpSession session = this.request.getSession(false);
return (session != null ? session.getAttribute(name) : null);
case APPLICATION_SCOPE:
return this.servletContext.getAttribute(name);
default:
throw new IllegalArgumentException("Invalid scope: " + scope);
}
}
public Object findAttribute(String name) {
Object value = getAttribute(name);
if (value == null) {
value = getAttribute(name, REQUEST_SCOPE);
if (value == null) {
value = getAttribute(name, SESSION_SCOPE);
if (value == null) {
value = getAttribute(name, APPLICATION_SCOPE);
}
}
}
return value;
}
public void removeAttribute(String name) {
Assert.notNull(name, "Attribute name must not be null");
this.removeAttribute(name, PageContext.PAGE_SCOPE);
this.removeAttribute(name, PageContext.REQUEST_SCOPE);
this.removeAttribute(name, PageContext.SESSION_SCOPE);
this.removeAttribute(name, PageContext.APPLICATION_SCOPE);
}
public void removeAttribute(String name, int scope) {
Assert.notNull(name, "Attribute name must not be null");
switch (scope) {
case PAGE_SCOPE:
this.attributes.remove(name);
break;
case REQUEST_SCOPE:
this.request.removeAttribute(name);
break;
case SESSION_SCOPE:
this.request.getSession().removeAttribute(name);
break;
case APPLICATION_SCOPE:
this.servletContext.removeAttribute(name);
break;
default:
throw new IllegalArgumentException("Invalid scope: " + scope);
}
}
public int getAttributesScope(String name) {
if (getAttribute(name) != null) {
return PAGE_SCOPE;
}
else if (getAttribute(name, REQUEST_SCOPE) != null) {
return REQUEST_SCOPE;
}
else if (getAttribute(name, SESSION_SCOPE) != null) {
return SESSION_SCOPE;
}
else if (getAttribute(name, APPLICATION_SCOPE) != null) {
return APPLICATION_SCOPE;
}
else {
return 0;
}
}
public Enumeration getAttributeNames() {
return this.attributes.keys();
}
public Enumeration getAttributeNamesInScope(int scope) {
switch (scope) {
case PAGE_SCOPE:
return getAttributeNames();
case REQUEST_SCOPE:
return this.request.getAttributeNames();
case SESSION_SCOPE:
HttpSession session = this.request.getSession(false);
return (session != null ? session.getAttributeNames() : null);
case APPLICATION_SCOPE:
return this.servletContext.getAttributeNames();
default:
throw new IllegalArgumentException("Invalid scope: " + scope);
}
}
public JspWriter getOut() {
if (this.out == null) {
this.out = new MockJspWriter(this.response);
}
return this.out;
}
public ExpressionEvaluator getExpressionEvaluator() {
return new MockExpressionEvaluator(this);
}
public VariableResolver getVariableResolver() {
return null;
}
public HttpSession getSession() {
return this.request.getSession();
}
public Object getPage() {
throw new UnsupportedOperationException("getPage");
}
public ServletRequest getRequest() {
return this.request;
}
public ServletResponse getResponse() {
return this.response;
}
public Exception getException() {
throw new UnsupportedOperationException("getException");
}
public ServletConfig getServletConfig() {
return this.servletConfig;
}
public ServletContext getServletContext() {
return this.servletContext;
}
public void forward(String url) throws ServletException, IOException {
throw new UnsupportedOperationException("forward");
}
public void include(String url) throws ServletException, IOException {
throw new UnsupportedOperationException("include");
}
public void include(String url, boolean flush) throws ServletException, IOException {
throw new UnsupportedOperationException("include");
}
public void handlePageException(Exception ex) throws ServletException, IOException {
throw new UnsupportedOperationException("handlePageException");
}
public void handlePageException(Throwable ex) throws ServletException, IOException {
throw new UnsupportedOperationException("handlePageException");
}
}