Java tutorial
/* * RHQ Management Platform * Copyright (C) 2005-2008 Red Hat, Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ package org.rhq.enterprise.gui.admin.user; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.tiles.ComponentContext; import org.rhq.core.domain.auth.Subject; import org.rhq.core.domain.authz.Role; import org.rhq.core.domain.util.PageControl; import org.rhq.core.domain.util.PageList; import org.rhq.enterprise.gui.legacy.Constants; import org.rhq.enterprise.gui.legacy.action.WorkflowPrepareAction; import org.rhq.enterprise.gui.legacy.util.RequestUtils; import org.rhq.enterprise.gui.legacy.util.SessionUtils; import org.rhq.enterprise.gui.util.WebUtility; import org.rhq.enterprise.server.auth.SubjectManagerLocal; import org.rhq.enterprise.server.authz.RoleManagerLocal; import org.rhq.enterprise.server.util.LookupUtil; /** * An Action that retrieves data to facilitate display of the <em>AddUserRoles</em> form. The purpose of this is to add * Roles to a given user. */ public class AddUserRolesFormPrepareAction extends WorkflowPrepareAction { @Override @SuppressWarnings("deprecation") public ActionForward workflow(ComponentContext context, ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { Log log = LogFactory.getLog(AddUserRolesFormPrepareAction.class.getName()); AddUserRolesForm addForm = (AddUserRolesForm) form; Integer userId = addForm.getU(); if (userId == null) { userId = RequestUtils.getUserId(request); } PageControl pca = WebUtility.getPageControl(request, "a"); PageControl pcp = WebUtility.getPageControl(request, "p"); log.trace("available page control: " + pca); log.trace("pending page control: " + pcp); log.trace("getting user [" + userId + "]"); SubjectManagerLocal subjectManager = LookupUtil.getSubjectManager(); RoleManagerLocal roleManager = LookupUtil.getRoleManager(); Subject user = subjectManager.getSubjectById(userId); if (user == null) { throw new NullPointerException("User [" + userId + "] is not known"); } request.setAttribute(Constants.USER_ATTR, user); addForm.setU(user.getId()); /* pending roles are those on the right side of the "add * to list" widget- awaiting association with the userwhen the form's "ok" button is clicked. */ Integer[] pendingRoleIds = SessionUtils.getList(request.getSession(), Constants.PENDING_ROLES_SES_ATTR); log.trace("getting pending roles for user [" + userId + "]"); PageList<Role> pendingRoles = roleManager.findRolesByIds(pendingRoleIds, pcp); request.setAttribute(Constants.PENDING_ROLES_ATTR, pendingRoles); /* * available roles are all roles in the system that are not associated with the user and are not pending */ log.trace("getting available roles for user [" + userId + "]"); PageList<Role> availableRoles = roleManager.findAvailableRolesForSubject(RequestUtils.getSubject(request), userId, pendingRoleIds, pca); request.setAttribute(Constants.AVAIL_ROLES_ATTR, availableRoles); return null; } }