TaskList.java

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package jsf2.demo.scrum.web.controller;

import java.io.Serializable;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.faces.view.ViewScoped;
import javax.inject.Named;
import javax.inject.Inject;
import javax.faces.model.DataModel;
import javax.faces.model.ListDataModel;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import jsf2.demo.scrum.model.entities.Story;
import jsf2.demo.scrum.model.entities.Task;

/**
 *
 * @author Eder Magalhaes
 */
@Named("taskList")
@ViewScoped
public class TaskList extends AbstractManager implements Serializable {

    @Inject
    private TaskManager taskManager;
    
    private DataModel<Task> tasks;
    private List<Task> taskList;
    
    @PostConstruct
    public void init() {
        try {
            setTaskList(doInTransaction(new PersistenceAction <List<Task>>() {

                @SuppressWarnings({"unchecked"})
                public List<Task> execute(EntityManager em) {
                    Story s = taskManager.getStory();
                    if (s == null)
                        return Collections.EMPTY_LIST;

                    Query query = em.createNamedQuery("task.getByStory");
                    query.setParameter("story", s);
                    return (List<Task>) query.getResultList();
                }
            }));
        } catch (ManagerException ex) {
            Logger.getLogger(TaskList.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    public String edit() {
        return taskManager.edit(tasks.getRowData());
    }
    
    public String remove() {
        String result = taskManager.remove(tasks.getRowData());
        init();
        return result;
    }
    
    public void setTaskManager(TaskManager taskManager) {
        this.taskManager = taskManager;
    }

    public TaskManager getTaskManager() {
        return taskManager;
    }

    public void setTasks(DataModel<Task> tasks) {
        this.tasks = tasks;
    }

    public DataModel<Task> getTasks() {
        this.tasks = new ListDataModel<Task>(taskList);
        return tasks;
    }
    
    public List<Task> getTaskList() {
        return taskList;
    }

    public void setTaskList(List<Task> taskList) {
        this.taskList = taskList;
    }

    
}