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Java > Open Source Codes > com > blandware > atleap > webapp > action > core > menuItem > AssignMenuItemRolesAction


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.core.menuItem;
17
18 import com.blandware.atleap.common.Constants;
19 import com.blandware.atleap.model.core.MenuItem;
20 import com.blandware.atleap.model.core.Role;
21 import com.blandware.atleap.service.core.MenuManager;
22 import com.blandware.atleap.service.core.RoleManager;
23 import com.blandware.atleap.webapp.action.core.BaseAction;
24 import com.blandware.atleap.webapp.form.core.SelectRolesForm;
25 import com.blandware.atleap.webapp.util.core.CacheUtil;
26 import com.blandware.atleap.webapp.util.core.WebappConstants;
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 import org.springframework.orm.ObjectOptimisticLockingFailureException;
33
34 import javax.servlet.http.HttpServletRequest JavaDoc;
35 import javax.servlet.http.HttpServletResponse JavaDoc;
36 import java.util.ArrayList JavaDoc;
37 import java.util.List JavaDoc;
38 import java.util.Iterator JavaDoc;
39
40 /**
41  * <p>Assigns Roles to menu item
42  * </p>
43  * <p><a HREF="AssignMenuItemRolesAction.java.htm"><i>View Source</i></a></p>
44  * <p/>
45  *
46  * @author Sergey Zubtcovskii <a HREF="mailto:sergey.zubtcovskii@blandware.com">&lt;sergey.zubtcovskii@blandware.com&gt;</a>
47  * @version $Revision: 1.15 $ $Date: 2006/03/10 17:10:27 $
48  * @struts.action path="/core/menuItem/assignRoles"
49  * name="selectRolesForm"
50  * scope="request"
51  * input="inputForward"
52  * validate="true"
53  * roles="core-menuItem-assignRoles"
54  * @struts.action-forward name="inputForward"
55  * path=".core.menuItem.assignRoles"
56  * @struts.action-forward name="listMenuItems"
57  * path="/core/menuItem/list.do"
58  * redirect="true"
59  * @struts.action-forward name="callAssignRoles"
60  * path="/core/menuItem/callAssignRoles.do"
61  * redirect="false"
62  * @struts.action-forward name="unsatisfiable"
63  * path="/core/menuItem/list.do"
64  */
65 public final class AssignMenuItemRolesAction extends BaseAction {
66     /**
67      * @param mapping The ActionMapping used to select this instance
68      * @param form The optional ActionForm bean for this request (if any)
69      * @param request The HTTP request we are proceeding
70      * @param response The HTTP response we are creating
71      * @return an ActionForward instance describing where and how
72      * control should be forwarded, or null if response
73      * has already been completed
74      */
75     public ActionForward execute(ActionMapping mapping, ActionForm form,
76                                  HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response) throws Exception JavaDoc {
77
78         Long JavaDoc ownerId = null;
79         if ( request.getSession().getAttribute(WebappConstants.OWNER_ID_KEY) != null ) {
80             ownerId = (Long JavaDoc) request.getSession().getAttribute(WebappConstants.OWNER_ID_KEY);
81         } else {
82             if ( log.isWarnEnabled() ) {
83                 log.warn("Missing owner ID. Returning to index...");
84             }
85             return mapping.findForward("admin");
86         }
87
88         if ( !isCancelled(request) ) {
89             // acquire POJOs for all selected roles
90 RoleManager roleManager = (RoleManager) getBean(Constants.ROLE_MANAGER_BEAN);
91             SelectRolesForm selectRolesForm = (SelectRolesForm) form;
92             String JavaDoc[] selectedRoleNames = selectRolesForm.getSelectedRoles();
93
94             List JavaDoc roles = new ArrayList JavaDoc();
95             for ( int i = 0; i < selectedRoleNames.length; i++ ) {
96                 String JavaDoc roleName = selectedRoleNames[i];
97                 Role role = roleManager.retrieveRole(roleName);
98                 if ( role != null ) {
99                     roles.add(role);
100                 }
101             }
102
103             Long JavaDoc menuItemId = (Long JavaDoc) request.getSession().getAttribute(WebappConstants.MENU_ITEM_ID_KEY);
104             MenuManager menuManager = (MenuManager) getBean(Constants.MENU_MANAGER_BEAN);
105             MenuItem menuItem = menuManager.retrieveMenuItem(menuItemId);
106
107             if ( menuItem == null ) {
108                 // menu item not found. it might be deleted by someone else
109 ActionMessages errors = new ActionMessages();
110                 errors.add("menuItemNotFound", new ActionMessage("core.menuItem.errors.notFound"));
111                 saveErrors(request, errors);
112                 return mapping.findForward("listMenuItems");
113             }
114
115             menuItem.setVersion(Long.valueOf(selectRolesForm.getVersion()));
116
117             // remove roles which were unselected
118 // list of roles is copied in order to prevent ConcurrentModifictionException to be thrown
119 List JavaDoc menuItemRoles = new ArrayList JavaDoc(menuItem.getRoles());
120             for ( int i = 0; i < menuItemRoles.size(); i++ ) {
121                 Role role = (Role) menuItemRoles.get(i);
122                 if ( !roles.contains(role) ) {
123                     menuItem.removeRole(role);
124                 }
125             }
126
127             // add new roles
128 for ( Iterator JavaDoc i = roles.iterator(); i.hasNext(); ) {
129                 Role role = (Role) i.next();
130                 menuItem.addRole(role);
131             }
132
133             Long JavaDoc parentItemId = null;
134             if ( menuItem.getParentItem() != null ) {
135                 parentItemId = menuItem.getParentItem().getId();
136             }
137
138             try {
139                 menuManager.updateMenuItem(menuItem, parentItemId, ownerId);
140             } catch ( ObjectOptimisticLockingFailureException e ) {
141                 // menu item was updated or deleted by another transaction
142 ActionMessages errors = new ActionMessages();
143                 errors.add("updateFailed", new ActionMessage("core.menuItem.errors.updateFailed"));
144                 saveErrors(request, errors);
145                 request.setAttribute(WebappConstants.MENU_ITEM_ID_KEY, menuItem.getId());
146                 return mapping.findForward("callAssignRoles");
147             }
148
149             // flush cache
150 CacheUtil cacheUtil = CacheUtil.getInstance(request);
151             cacheUtil.flushMenuCache();
152             cacheUtil.flushContentPageCache();
153
154         }
155         return mapping.findForward("listMenuItems");
156     }
157 }
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