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Java > Open Source Codes > com > blandware > atleap > webapp > action > news > CallAssignNewsItemRolesAction


1 /*
2  * Copyright 2004 Blandware (http://www.blandware.com)
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.blandware.atleap.webapp.action.news;
17
18 import com.blandware.atleap.common.Constants;
19 import com.blandware.atleap.common.NewsModuleConstants;
20 import com.blandware.atleap.model.core.Role;
21 import com.blandware.atleap.model.news.NewsItem;
22 import com.blandware.atleap.service.core.RoleManager;
23 import com.blandware.atleap.service.news.NewsManager;
24 import com.blandware.atleap.webapp.action.core.BaseAction;
25 import com.blandware.atleap.webapp.form.core.SelectRolesForm;
26 import com.blandware.atleap.webapp.util.news.NewsModuleWebConstants;
27 import org.apache.struts.action.ActionForm;
28 import org.apache.struts.action.ActionForward;
29 import org.apache.struts.action.ActionMapping;
30 import org.apache.struts.action.ActionMessage;
31 import org.apache.struts.action.ActionMessages;
32
33 import javax.servlet.http.HttpServletRequest JavaDoc;
34 import javax.servlet.http.HttpServletResponse JavaDoc;
35 import java.util.ArrayList JavaDoc;
36 import java.util.Iterator JavaDoc;
37 import java.util.List JavaDoc;
38
39 /**
40  * <p>Returns page with two lists to reassign roles to news item
41  * </p>
42  * <p><a HREF="CallAssignNewsItemRolesAction.java.htm"><i>View Source</i></a></p>
43  * <p/>
44  *
45  * @author Sergey Zubtcovskii <a HREF="mailto:sergey.zubtcovskii@blandware.com">&lt;sergey.zubtcovskii@blandware.com&gt;</a>
46  * @version $Revision: 1.9 $ $Date: 2006/03/11 10:08:53 $
47  * @struts.action path="/news/callAssignItemRoles"
48  * name="selectRolesForm"
49  * validate="false"
50  * roles="news-item-assignRoles"
51  * @struts.action-forward name="assignRoles"
52  * path=".news.assignItemRoles"
53  * @struts.action-forward name="listNewsItems"
54  * path="/news/listItems.do"
55  * redirect="true"
56  */
57 public final class CallAssignNewsItemRolesAction extends BaseAction {
58     /**
59      * @param mapping The ActionMapping used to select this instance
60      * @param form The optional ActionForm bean for this request (if any)
61      * @param request The HTTP request we are proceeding
62      * @param response The HTTP response we are creating
63      * @return an ActionForward instance describing where and how
64      * control should be forwarded, or null if response
65      * has already been completed
66      */
67     public ActionForward execute(ActionMapping mapping, ActionForm form,
68                                  HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response) throws Exception JavaDoc {
69
70         Long JavaDoc newsItemId = null;
71         if ( request.getParameter("newsItemId") != null ) {
72             newsItemId = Long.valueOf(request.getParameter("newsItemId"));
73         } else if ( request.getAttribute(NewsModuleWebConstants.NEWS_ITEM_ID_KEY) != null ) {
74             newsItemId = (Long JavaDoc) request.getAttribute(NewsModuleWebConstants.NEWS_ITEM_ID_KEY);
75         } else {
76             if ( log.isWarnEnabled() ) {
77                 log.warn("Missing news item ID. Returning to list...");
78             }
79             return mapping.findForward("listNewsItems");
80         }
81
82         SelectRolesForm selectRolesForm = (SelectRolesForm) form;
83         NewsManager newsManager = (NewsManager) getBean(NewsModuleConstants.NEWS_MANAGER_BEAN);
84         NewsItem newsItem = newsManager.retrieveNewsItem(newsItemId);
85         if ( newsItem == null ) {
86             // newsItem not found. it might be deleted by someone else
87 ActionMessages errors = new ActionMessages();
88             errors.add("newsItemNotFound", new ActionMessage("news.errors.notFound"));
89             saveErrors(request, errors);
90             return mapping.findForward("listNewsItems");
91         }
92
93         selectRolesForm.setVersion(newsItem.getVersion().toString());
94
95         List JavaDoc newsItemRoles = new ArrayList JavaDoc();
96         for ( Iterator JavaDoc i = newsItem.getRoles().iterator(); i.hasNext(); ) {
97             Role role = (Role) i.next();
98             newsItemRoles.add(role);
99         }
100
101         RoleManager roleManager = (RoleManager) getBean(Constants.ROLE_MANAGER_BEAN);
102         List JavaDoc availableRoles = roleManager.listRoles(null).asList();
103         List JavaDoc allRoles = new ArrayList JavaDoc(availableRoles);
104         availableRoles.removeAll(newsItemRoles);
105
106         selectRolesForm.setAvailableRolesList(availableRoles);
107         selectRolesForm.setSelectedRolesList(newsItemRoles);
108         request.getSession().setAttribute(NewsModuleWebConstants.NEWS_ITEM_ID_KEY, newsItem.getId());
109
110         request.setAttribute("allRoles", allRoles);
111
112         // save transaction token in request
113 saveToken(request);
114         return mapping.findForward("assignRoles");
115     }
116 }
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