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Java EE 6 example source code file (TaskManager.java)
The Java EE 6 TaskManager.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2009 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can obtain * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt. * Sun designates this particular file as subject to the "Classpath" exception * as provided by Sun in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the License * Header, with the fields enclosed by brackets [] replaced by your own * identifying information: "Portions Copyrighted [year] * [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package jsf2.demo.scrum.web.controller; import jsf2.demo.scrum.model.entities.Story; import jsf2.demo.scrum.model.entities.Task; import javax.annotation.PostConstruct; import javax.faces.application.FacesMessage; import javax.faces.bean.ManagedBean; import javax.faces.bean.ManagedProperty; import javax.faces.component.UIComponent; import javax.faces.context.FacesContext; import javax.faces.model.DataModel; import javax.faces.model.ListDataModel; import javax.faces.validator.ValidatorException; import javax.persistence.EntityManager; import javax.persistence.Query; import java.io.Serializable; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import javax.annotation.PreDestroy; import javax.faces.bean.CustomScoped; import jsf2.demo.scrum.web.scope.TaskScopeResolver; /** * @author Dr. Spock (spock at dev.java.net) */ @ManagedBean(name = "taskManager") @CustomScoped(value="#{taskScope}") public class TaskManager extends AbstractManager implements Serializable { private static final long serialVersionUID = 1L; private Task currentTask; private DataModel<Task> tasks; private List<Task> taskList; @ManagedProperty("#{storyManager}") private StoryManager storyManager; @PostConstruct public void construct() { getLogger(getClass()).log(Level.INFO, "new intance of taskManager in taskScope"); init(); } public void init() { Task task = new Task(); Story currentStory = storyManager.getCurrentStory(); task.setStory(currentStory); setCurrentTask(task); if (currentStory != null) { taskList = new LinkedList<Task>(currentStory.getTasks()); } else { taskList = new ArrayList<Task>(); } tasks = new ListDataModel<Task>(taskList); } public String create() { Task task = new Task(); task.setStory(storyManager.getCurrentStory()); setCurrentTask(task); return "create"; } public String save() { if (currentTask != null) { try { Task merged = doInTransaction(new PersistenceAction<Task>() { public Task execute(EntityManager em) { if (currentTask.isNew()) { em.persist(currentTask); } else if (!em.contains(currentTask)) { return em.merge(currentTask); } return currentTask; } }); if (!currentTask.equals(merged)) { setCurrentTask(merged); int idx = taskList.indexOf(currentTask); if (idx != -1) { taskList.set(idx, merged); } } storyManager.getCurrentStory().addTask(merged); if (!taskList.contains(merged)) { taskList.add(merged); } } catch (Exception e) { getLogger(getClass()).log(Level.SEVERE, "Error on try to save Task: " + currentTask, e); addMessage("Error on try to save Task", FacesMessage.SEVERITY_ERROR); return null; } } return "show"; } public String edit() { setCurrentTask(tasks.getRowData()); return "edit"; } public String remove() { final Task task = tasks.getRowData(); if (task != null) { try { doInTransaction(new PersistenceActionWithoutResult() { public void execute(EntityManager em) { if (em.contains(task)) { em.remove(task); } else { em.remove(em.merge(task)); } } }); storyManager.getCurrentStory().removeTask(task); taskList.remove(task); } catch (Exception e) { getLogger(getClass()).log(Level.SEVERE, "Error on try to remove Task: " + currentTask, e); addMessage("Error on try to remove Task", FacesMessage.SEVERITY_ERROR); return null; } } return "show"; } public void checkUniqueTaskName(FacesContext context, UIComponent component, Object newValue) { final String newName = (String) newValue; try { Long count = doInTransaction(new PersistenceAction<Long>() { public Long execute(EntityManager em) { Query query = em.createNamedQuery((currentTask.isNew()) ? "task.new.countByNameAndStory" : "task.countByNameAndStory"); query.setParameter("name", newName); query.setParameter("story", storyManager.getCurrentStory()); if (!currentTask.isNew()) { query.setParameter("currentTask", (!currentTask.isNew()) ? currentTask : null); } return (Long) query.getSingleResult(); } }); if (count != null && count > 0) { throw new ValidatorException(getFacesMessageForKey("task.form.label.name.unique")); } } catch (ManagerException ex) { Logger.getLogger(TaskManager.class.getName()).log(Level.SEVERE, null, ex); } } public String cancelEdit() { return "show"; } public Task getCurrentTask() { return currentTask; } public void setCurrentTask(Task currentTask) { this.currentTask = currentTask; } public DataModel<Task> getTasks() { this.tasks = new ListDataModel<Task>(storyManager.getCurrentStory().getTasks()); return tasks; } public void setTasks(DataModel<Task> tasks) { this.tasks = tasks; } public Story getStory() { return storyManager.getCurrentStory(); } public void setStory(Story story) { storyManager.setCurrentStory(story); } public StoryManager getStoryManager() { return storyManager; } public void setStoryManager(StoryManager storyManager) { this.storyManager = storyManager; } public String showStories() { endScope(); return "/story/show"; } private void endScope() { TaskScopeResolver.destroyScope(); } @PreDestroy public void destroy() { getLogger(getClass()).log(Level.INFO, "destroy intance of taskManager in taskScope"); currentTask = null; tasks = null; if (null != taskList) { taskList.clear(); taskList = null; } storyManager = null; } } Other Java EE 6 examples (source code examples)Here is a short list of links related to this Java EE 6 TaskManager.java source code file: |
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