/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/rwiki/trunk/rwiki-tool/tool/src/java/uk/ac/cam/caret/sakai/rwiki/tool/command/HelperCommand.java $
* $Id: HelperCommand.java 58932 2009-03-20 22:09:18Z s.swinsburg@lancaster.ac.uk $
***********************************************************************************
*
* Copyright (c) 2003, 2004, 2005, 2006 The Sakai Foundation.
*
* Licensed under the Educational Community License, Version 1.0 (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.opensource.org/licenses/ecl1.php
*
* 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 uk.ac.cam.caret.sakai.rwiki.tool.command;
import org.sakaiproject.component.cover.ServerConfigurationService;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.sakaiproject.component.api.ComponentManager;
import org.sakaiproject.tool.api.ActiveTool;
import org.sakaiproject.tool.api.ActiveToolManager;
import org.sakaiproject.tool.api.SessionManager;
import org.sakaiproject.tool.api.Tool;
import uk.ac.cam.caret.sakai.rwiki.tool.api.HttpCommand;
/**
* HttpCommand which calls the file picker tool from sakai context.
*
* @author andrew
*/
public class HelperCommand implements HttpCommand
{
private static Log log = LogFactory.getLog(HelperCommand.class);
private ActiveToolManager activeToolManager;
private SessionManager sessionManager;
public void init()
{
ComponentManager cm = org.sakaiproject.component.cover.ComponentManager
.getInstance();
activeToolManager = (ActiveToolManager) load(cm,
ActiveToolManager.class.getName());
sessionManager = (SessionManager) load(cm, SessionManager.class
.getName());
}
private Object load(ComponentManager cm, String name)
{
Object o = cm.get(name);
if (o == null)
{
log.error("Cant find Spring component named " + name);
}
return o;
}
/*
* (non-Javadoc)
*
* @see uk.ac.cam.caret.sakai.rwiki.tool.api.HttpCommand#execute(javax.servlet.http.HttpServletRequest,
* javax.servlet.http.HttpServletResponse)
*/
public void execute(Dispatcher dispatcher, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
// FIXME!!
String requestPath = request.getRequestURI().substring(
request.getContextPath().length()
+ request.getServletPath().length());
String[] parts = requestPath.split("/");
String helperId = null;
// SAK-13408 - Tomcat and WAS have different URL structures; Attempting to add a
// link or image would lead to site unavailable errors in websphere if the tomcat
// URL structure is used.
if("websphere".equals(ServerConfigurationService.getString("servlet.container"))) {
if (parts.length < 5)
{
throw new IllegalArgumentException(
"You must provide a helper name to request.");
}
helperId = parts[4];
}
else {
if (parts.length < 3)
{
throw new IllegalArgumentException(
"You must provide a helper name to request.");
}
helperId = parts[2];
}
ActiveTool helperTool = activeToolManager.getActiveTool(helperId);
// put state info in toolSession to communicate with helper
StringBuffer context = new StringBuffer(request.getContextPath())
.append(request.getServletPath());
StringBuffer toolPath = new StringBuffer();
// SAK-13408 - Tomcat and WAS have different URL structures; Attempting to add a
// link or image would lead to site unavailable errors in websphere if the tomcat
// URL structure is used.
if("websphere".equals(ServerConfigurationService.getString("servlet.container"))){
String tid = org.sakaiproject.tool.cover.ToolManager.getCurrentPlacement().getId();
context.append("/tool/");
context.append(tid);
for (int i = 3; i < 5; i++)
{
context.append('/');
context.append(parts[i]);
}
for (int i = 5; i < parts.length; i++)
{
toolPath.append('/');
toolPath.append(parts[i]);
}
} else {
for (int i = 1; i < 3; i++)
{
context.append('/');
context.append(parts[i]);
}
for (int i = 3; i < parts.length; i++)
{
toolPath.append('/');
toolPath.append(parts[i]);
}
}
request.removeAttribute(Tool.NATIVE_URL);
// this is the forward call
helperTool.help(request, response, context.toString(), toolPath
.toString());
}
}