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.role; 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.apache.struts.tiles.actions.TilesAction; import org.rhq.core.domain.auth.Subject; import org.rhq.core.domain.authz.Role; import org.rhq.core.domain.criteria.SubjectCriteria; import org.rhq.core.domain.util.PageControl; import org.rhq.core.domain.util.PageList; import org.rhq.core.domain.util.PageOrdering; import org.rhq.enterprise.gui.legacy.Constants; 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.util.LookupUtil; /** * An Action that retrieves data from the BizApp to facilitate display of the <em>Add Role Users</em> form. */ public class AddUsersFormPrepareAction extends TilesAction { @Override public ActionForward execute(ComponentContext context, ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { Log log = LogFactory.getLog(AddUsersFormPrepareAction.class.getName()); AddUsersForm addForm = (AddUsersForm) form; Integer roleId = addForm.getR(); if (roleId == null) { roleId = RequestUtils.getRoleId(request); } Role role = (Role) request.getAttribute(Constants.ROLE_ATTR); if (role == null) { RequestUtils.setError(request, Constants.ERR_ROLE_NOT_FOUND); return null; } addForm.setR(role.getId()); PageControl pca = WebUtility.getPageControl(request, "a"); PageControl pcp = WebUtility.getPageControl(request, "p"); log.trace("available page control: " + pca); log.trace("pending page control: " + pcp); SubjectManagerLocal subjectManager = LookupUtil.getSubjectManager(); /* pending users are those on the right side of the "add * to list" widget- awaiting association with the rolewhen the form's "ok" button is clicked. */ Integer[] pendingUserIds = SessionUtils.getList(request.getSession(), Constants.PENDING_USERS_SES_ATTR); log.trace("getting pending users for role [" + roleId + "]"); SubjectCriteria c = new SubjectCriteria(); c.addFilterIds(pendingUserIds); c.addFilterFsystem(false); c.addFilterFactive(true); c.fetchRoles(true); c.addSortName(PageOrdering.ASC); PageList<Subject> pendingUsers = subjectManager.findSubjectsByCriteria(RequestUtils.getSubject(request), c); request.setAttribute(Constants.PENDING_USERS_ATTR, pendingUsers); /* * available users are all users in the system that are /not/ associated with the role and are not pending */ log.trace("getting available users for role [" + roleId + "]"); PageList<Subject> availableUsers = subjectManager .findAvailableSubjectsForRole(RequestUtils.getSubject(request), roleId, pendingUserIds, pca); request.setAttribute(Constants.AVAIL_USERS_ATTR, availableUsers); return null; } }