Java tutorial
/********************************************************************************** * $URL$ * $Id$ *********************************************************************************** * * Copyright (c) 2008, 2009, 2010 Etudes, Inc. * * Portions completed before September 1, 2008 * Copyright (c) 2007, 2008 The Regents of the University of Michigan & Foothill College, ETUDES Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * **********************************************************************************/ package org.etudes.mneme.tool; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.etudes.ambrosia.api.Context; import org.etudes.ambrosia.api.Values; import org.etudes.ambrosia.util.ControllerImpl; import org.etudes.mneme.api.Assessment; import org.etudes.mneme.api.AssessmentAccess; import org.etudes.mneme.api.AssessmentPermissionException; import org.etudes.mneme.api.AssessmentPolicyException; import org.etudes.mneme.api.AssessmentService; import org.sakaiproject.util.Web; /** * The /asssessment_special view for the mneme tool. */ public class AssessmentSpecialView extends ControllerImpl { /** Our log. */ private static Log M_log = LogFactory.getLog(AssessmentSpecialView.class); /** Dependency: Assessment service. */ protected AssessmentService assessmentService = null; /** * Shutdown. */ public void destroy() { M_log.info("destroy()"); } /** * {@inheritDoc} */ public void get(HttpServletRequest req, HttpServletResponse res, Context context, String[] params) throws IOException { if (params.length != 4) { throw new IllegalArgumentException(); } // sort parameter for return view String sort = params[2]; // assessment id parameter String aid = params[3]; Assessment assessment = assessmentService.getAssessment(aid); if (assessment == null) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.invalid))); return; } // security check if (!assessmentService.allowEditAssessment(assessment)) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized))); return; } // not for formal course evaluation if (assessment.getFormalCourseEval()) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized))); return; } // make sure any undefined user ids or users without permissions are removed assessment.getSpecialAccess().assureValidUsers(); // collect information: the selected assessment context.put("assessment", assessment); context.put("sort", sort); // render uiService.render(ui, context); } /** * Final initialization, once all dependencies are set. */ public void init() { super.init(); M_log.info("init()"); } /** * {@inheritDoc} */ public void post(HttpServletRequest req, HttpServletResponse res, Context context, String[] params) throws IOException { if (params.length != 4) { throw new IllegalArgumentException(); } // sort parameter for return view String sort = params[2]; // assessment id parameter String aid = params[3]; Assessment assessment = assessmentService.getAssessment(aid); if (assessment == null) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.invalid))); return; } // security check if (!assessmentService.allowEditAssessment(assessment)) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized))); return; } // not for formal course evaluation if (assessment.getFormalCourseEval()) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized))); return; } // for the ids selected for delete Values values = this.uiService.newValues(); context.put("ids", values); // read form String destination = this.uiService.decode(req, context); if ("DEL".equals(destination)) { // delete the selected ids String[] ids = values.getValues(); if (ids != null && (ids.length > 0)) { for (String id : ids) { AssessmentAccess access = assessment.getSpecialAccess().getAccess(id); if (access != null) { assessment.getSpecialAccess().removeAccess(access); } } } // make sure any undefined user ids or users without permissions are removed assessment.getSpecialAccess().assureValidUsers(); // save try { this.assessmentService.saveAssessment(assessment); } catch (AssessmentPermissionException e) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized))); return; } catch (AssessmentPolicyException e) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.policy))); return; } destination = context.getDestination(); } // deal with add else if ("ADD".equals(destination)) { AssessmentAccess access = assessment.getSpecialAccess().addAccess(); // save try { this.assessmentService.saveAssessment(assessment); } catch (AssessmentPermissionException e) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized))); return; } catch (AssessmentPolicyException e) { // redirect to error res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.policy))); return; } // go edit it destination = "/assessment_access/" + sort + "/" + aid + "/" + access.getId(); } res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, destination))); } /** * Set the AssessmentService. * * @param service * The AssessmentService. */ public void setAssessmentService(AssessmentService service) { this.assessmentService = service; } }