/*
* GroupEditServlet.java
*
* Version: $Revision: 3705 $
*
* Date: $Date: 2009-04-11 17:02:24 +0000 (Sat, 11 Apr 2009) $
*
* Copyright (c) 2002-2005, Hewlett-Packard Company and Massachusetts
* Institute of Technology. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Hewlett-Packard Company nor the name of the
* Massachusetts Institute of Technology nor the names of their
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.dspace.app.webui.servlet.admin;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.dspace.app.webui.servlet.DSpaceServlet;
import org.dspace.app.webui.util.JSPManager;
import org.dspace.app.webui.util.UIUtil;
import org.dspace.authorize.AuthorizeException;
import org.dspace.authorize.AuthorizeManager;
import org.dspace.core.Constants;
import org.dspace.core.Context;
import org.dspace.eperson.EPerson;
import org.dspace.eperson.Group;
/**
* Servlet for editing groups
*
* @author dstuve
* @version $Revision: 3705 $
*/
public class GroupEditServlet extends DSpaceServlet
{
protected void doDSGet(Context c, HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException,
SQLException, AuthorizeException
{
doDSPost(c, request, response);
}
protected void doDSPost(Context c, HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException,
SQLException, AuthorizeException
{
// Find out if there's a group parameter
int groupID = UIUtil.getIntParameter(request, "group_id");
Group group = null;
if (groupID >= 0)
{
group = Group.find(c, groupID);
}
// group is set
if (group != null)
{
// is this user authorized to edit this group?
AuthorizeManager.authorizeAction(c, group, Constants.ADD);
boolean submit_edit = (request.getParameter("submit_edit") != null);
boolean submit_group_update = (request.getParameter("submit_group_update") != null);
boolean submit_group_delete = (request.getParameter("submit_group_delete") != null);
boolean submit_confirm_delete = (request.getParameter("submit_confirm_delete") != null);
boolean submit_cancel_delete = (request.getParameter("submit_cancel_delete") != null);
// just chosen a group to edit - get group and pass it to
// group-edit.jsp
if (submit_edit && !submit_group_update && !submit_group_delete)
{
request.setAttribute("group", group);
request.setAttribute("members", group.getMembers());
request.setAttribute("membergroups", group.getMemberGroups());
JSPManager.showJSP(request, response, "/tools/group-edit.jsp");
}
// update the members of the group
else if (submit_group_update)
{
// first off, did we change the group name?
String newName = request.getParameter("group_name");
if (!newName.equals(group.getName()))
{
group.setName(newName);
group.update();
}
int[] eperson_ids = UIUtil.getIntParameters(request,
"eperson_id");
int[] group_ids = UIUtil.getIntParameters(request, "group_ids");
// now get members, and add new ones and remove missing ones
EPerson[] members = group.getMembers();
Group[] membergroups = group.getMemberGroups();
if (eperson_ids != null)
{
// some epeople were listed, now make group's epeople match
// given epeople
Set memberSet = new HashSet();
Set epersonIDSet = new HashSet();
// add all members to a set
for (int x = 0; x < members.length; x++)
{
Integer epersonID = new Integer(members[x].getID());
memberSet.add(epersonID);
}
// now all eperson_ids are put in a set
for (int x = 0; x < eperson_ids.length; x++)
{
epersonIDSet.add(new Integer(eperson_ids[x]));
}
// process eperson_ids, adding those to group not already
// members
Iterator i = epersonIDSet.iterator();
while (i.hasNext())
{
Integer currentID = (Integer) i.next();
if (!memberSet.contains(currentID))
{
group.addMember(EPerson.find(c, currentID
.intValue()));
}
}
// process members, removing any that aren't in eperson_ids
for (int x = 0; x < members.length; x++)
{
EPerson e = members[x];
if (!epersonIDSet.contains(new Integer(e.getID())))
{
group.removeMember(e);
}
}
}
else
{
// no members found (ids == null), remove them all!
for (int y = 0; y < members.length; y++)
{
group.removeMember(members[y]);
}
}
if (group_ids != null)
{
// some groups were listed, now make group's member groups
// match given group IDs
Set memberSet = new HashSet();
Set groupIDSet = new HashSet();
// add all members to a set
for (int x = 0; x < membergroups.length; x++)
{
Integer myID = new Integer(membergroups[x].getID());
memberSet.add(myID);
}
// now all eperson_ids are put in a set
for (int x = 0; x < group_ids.length; x++)
{
groupIDSet.add(new Integer(group_ids[x]));
}
// process group_ids, adding those to group not already
// members
Iterator i = groupIDSet.iterator();
while (i.hasNext())
{
Integer currentID = (Integer) i.next();
if (!memberSet.contains(currentID))
{
group
.addMember(Group.find(c, currentID
.intValue()));
}
}
// process members, removing any that aren't in eperson_ids
for (int x = 0; x < membergroups.length; x++)
{
Group g = membergroups[x];
if (!groupIDSet.contains(new Integer(g.getID())))
{
group.removeMember(g);
}
}
}
else
{
// no members found (ids == null), remove them all!
for (int y = 0; y < membergroups.length; y++)
{
group.removeMember(membergroups[y]);
}
}
group.update();
request.setAttribute("group", group);
request.setAttribute("members", group.getMembers());
request.setAttribute("membergroups", group.getMemberGroups());
JSPManager.showJSP(request, response, "/tools/group-edit.jsp");
c.complete();
}
else if (submit_group_delete)
{
// direct to a confirmation step
request.setAttribute("group", group);
JSPManager.showJSP(request, response, "/dspace-admin/group-confirm-delete.jsp");
}
else if (submit_confirm_delete)
{
// phony authorize, only admins can do this
AuthorizeManager.authorizeAction(c, group, Constants.WRITE);
// delete group, return to group-list.jsp
group.delete();
showMainPage(c, request, response);
}
else if (submit_cancel_delete)
{
// show group list
showMainPage(c, request, response);
}
else
{
// unknown action, show edit page
request.setAttribute("group", group);
request.setAttribute("members", group.getMembers());
request.setAttribute("membergroups", group.getMemberGroups());
JSPManager.showJSP(request, response, "/tools/group-edit.jsp");
}
}
else
// no group set
{
// want to add a group - create a blank one, and pass to
// group_edit.jsp
String button = UIUtil.getSubmitButton(request, "submit");
if (button.equals("submit_add"))
{
group = Group.create(c);
group.setName("new group" + group.getID());
group.update();
request.setAttribute("group", group);
request.setAttribute("members", group.getMembers());
request.setAttribute("membergroups", group.getMemberGroups());
JSPManager.showJSP(request, response, "/tools/group-edit.jsp");
c.complete();
}
else
{
// show the main page (select groups)
showMainPage(c, request, response);
}
}
}
private void showMainPage(Context c, HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException,
SQLException, AuthorizeException
{
Group[] groups = Group.findAll(c, Group.NAME);
// if( groups == null ) { System.out.println("groups are null"); }
// else System.out.println("# of groups: " + groups.length);
request.setAttribute("groups", groups);
JSPManager.showJSP(request, response, "/tools/group-list.jsp");
c.complete();
}
}