/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
package org.dspace.app.xmlui.aspect.xmlworkflow;
import java.io.IOException;
import java.io.Serializable;
import java.sql.SQLException;
import org.apache.cocoon.caching.CacheableProcessingComponent;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.util.HashUtil;
import org.apache.excalibur.source.SourceValidity;
import org.apache.excalibur.source.impl.validity.NOPValidity;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.DSpaceValidity;
import org.dspace.app.xmlui.utils.UIException;
import org.dspace.app.xmlui.wing.Message;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.List;
import org.dspace.app.xmlui.wing.element.Options;
import org.dspace.authorize.AuthorizeException;
import org.dspace.authorize.AuthorizeManager;
import org.dspace.eperson.Group;
import org.xml.sax.SAXException;
/**
* Navigation class of the xml workfow
*
* @author Bram De Schouwer (bram.deschouwer at dot com)
* @author Kevin Van de Velde (kevin at atmire dot com)
* @author Ben Bosman (ben at atmire dot com)
* @author Mark Diggory (markd at atmire dot com)
*/
public class Navigation extends AbstractDSpaceTransformer implements CacheableProcessingComponent
{
private static final Message T_xmlworkflow_overview = message("xmlui.XMLWorkflow.Navigation.xmlworkflow_overview");
/** Cached validity object */
private SourceValidity validity;
/** exports available for download */
java.util.List<String> availableExports = null;
/**
* Generate the unique cache key.
*
* @return The generated key hashes the src
*/
public Serializable getKey()
{
Request request = ObjectModelHelper.getRequest(objectModel);
// Special case, don't cache anything if the user is logging
// in. The problem occures because of timming, this cache key
// is generated before we know whether the operation has
// succeeded or failed. So we don't know whether to cache this
// under the user's specific cache or under the anonymous user.
if (request.getParameter("login_email") != null ||
request.getParameter("login_password") != null ||
request.getParameter("login_realm") != null )
{
return "0";
}
if (context.getCurrentUser() == null)
{
return HashUtil.hash("anonymous");
}
if (availableExports != null && availableExports.size()>0) {
StringBuilder key = new StringBuilder(context.getCurrentUser().getEmail());
for(String fileName : availableExports){
key.append(":").append(fileName);
}
return HashUtil.hash(key.toString());
}
return HashUtil.hash(context.getCurrentUser().getEmail());
}
/**
* Generate the validity object.
*
* @return The generated validity object or <code>null</code> if the
* component is currently not cacheable.
*/
public SourceValidity getValidity()
{
if (this.validity == null)
{
// Only use the DSpaceValidity object is someone is logged in.
if (context.getCurrentUser() != null)
{
try {
DSpaceValidity validity = new DSpaceValidity();
validity.add(eperson);
Group[] groups = Group.allMemberGroups(context, eperson);
for (Group group : groups)
{
validity.add(group);
}
this.validity = validity.complete();
}
catch (SQLException sqle)
{
// Just ignore it and return invalid.
}
}
else
{
this.validity = NOPValidity.SHARED_INSTANCE;
}
}
return this.validity;
}
public void addOptions(Options options) throws SAXException, WingException,
UIException, SQLException, IOException, AuthorizeException
{
/* Create skeleton menu structure to ensure consistent order between aspects,
* even if they are never used
*/
List admin = options.addList("administrative");
//Check if a system administrator
boolean isSystemAdmin = AuthorizeManager.isAdmin(this.context);
// System Administrator options!
if (isSystemAdmin)
{
admin.addItemXref(contextPath+ "/admin/xmlworkflowoverview", T_xmlworkflow_overview);
}
}
/**
* recycle
*/
public void recycle()
{
this.validity = null;
super.recycle();
}
}