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package jsf2.demo.scrum.web.controller;
import jsf2.demo.scrum.model.entities.Project;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.model.DataModel;
import javax.faces.model.ListDataModel;
import javax.faces.model.SelectItem;
import javax.faces.validator.ValidatorException;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import java.io.Serializable;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* @author Dr. Spock (spock at dev.java.net)
*/
@ManagedBean(name = "projectManager")
@SessionScoped
public class ProjectManager extends AbstractManager implements Serializable {
private static final long serialVersionUID = 1L;
private Project currentProject;
private DataModel<Project> projects;
private List<SelectItem> projectItems;
private List<Project> projectList;
@PostConstruct
public void construct() {
Project project = new Project();
setCurrentProject(project);
init();
}
@PreDestroy
public void destroy() {
projects = null;
if (projectItems != null) {
projectItems.clear();
projectItems = null;
}
if (projectList != null) {
projectList.clear();
projectList = null;
}
currentProject = null;
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("projectManager");
}
public void init() {
try {
setProjectList(doInTransaction(new PersistenceAction<List<Project>>() {
@SuppressWarnings({"unchecked"})
public List<Project> execute(EntityManager em) {
Query query = em.createNamedQuery("project.getAll");
return (List<Project>) query.getResultList();
}
}));
} catch (ManagerException ex) {
Logger.getLogger(ProjectManager.class.getName()).log(Level.SEVERE, null, ex);
}
projectItems = new LinkedList<SelectItem>();
projectItems.add(new SelectItem(new Project(), "-- Select one project --"));
if (getProjectList() != null) {
projects = new ListDataModel<Project>(getProjectList());
for (Project p : getProjectList()) {
projectItems.add(new SelectItem(p, p.getName()));
}
}
}
public String create() {
Project project = new Project();
setCurrentProject(project);
return "create";
}
public String save() {
if (getCurrentProject() != null) {
try {
Project merged = doInTransaction(new PersistenceAction<Project>() {
public Project execute(EntityManager em) {
if (getCurrentProject().isNew()) {
em.persist(getCurrentProject());
} else if (!em.contains(currentProject)) {
return em.merge(getCurrentProject());
}
return getCurrentProject();
}
});
if (!currentProject.equals(merged)) {
setCurrentProject(merged);
int idx = getProjectList().indexOf(getCurrentProject());
if (idx != -1) {
getProjectList().set(idx, merged);
}
}
if (!projectList.contains(merged)) {
getProjectList().add(merged);
}
} catch (Exception e) {
getLogger(getClass()).log(Level.SEVERE, "Error on try to save Project: " + getCurrentProject(), e);
addMessage("Error on try to save Project", FacesMessage.SEVERITY_ERROR);
return null;
}
}
init();
return "show";
}
public String edit() {
setCurrentProject(projects.getRowData());
// Using implicity navigation, this request come from /projects/show.xhtml and directs to /project/edit.xhtml
return "edit";
}
public String remove() {
final Project project = projects.getRowData();
if (project != null) {
try {
doInTransaction(new PersistenceActionWithoutResult() {
public void execute(EntityManager em) {
if (em.contains(project)) {
em.remove(project);
} else {
em.remove(em.merge(project));
}
}
});
getProjectList().remove(project);
} catch (Exception e) {
getLogger(getClass()).log(Level.SEVERE, "Error on try to remove Project: " + getCurrentProject(), e);
addMessage("Error on try to remove Project", FacesMessage.SEVERITY_ERROR);
return null;
}
}
init();
// Using implicity navigation, this request come from /projects/show.xhtml and directs to /project/show.xhtml
// could be null instead
return "show";
}
public void checkUniqueProjectName(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((getCurrentProject().isNew()) ? "project.new.countByName" : "project.countByName");
query.setParameter("name", newName);
if (!currentProject.isNew()) {
query.setParameter("currentProject", getCurrentProject());
}
return (Long) query.getSingleResult();
}
});
if (count != null && count > 0) {
throw new ValidatorException(getFacesMessageForKey("project.form.label.name.unique"));
}
} catch (ManagerException ex) {
Logger.getLogger(ProjectManager.class.getName()).log(Level.SEVERE, null, ex);
}
}
public String cancelEdit() {
// Implicity navigation, this request come from /projects/edit.xhtml and directs to /project/show.xhtml
return "show";
}
public String showSprints() {
setCurrentProject(projects.getRowData());
// Implicity navigation, this request come from /projects/show.xhtml and directs to /project/showSprints.xhtml
return "showSprints";
}
public Project getCurrentProject() {
return currentProject;
}
public void setCurrentProject(Project currentProject) {
this.currentProject = currentProject;
}
public DataModel<Project> getProjects() {
return projects;
}
public void setProjects(DataModel<Project> projects) {
this.projects = projects;
}
public List<SelectItem> getProjectItems() {
return projectItems;
}
public void setProjectItems(List<SelectItem> projectItems) {
this.projectItems = projectItems;
}
/**
* @return the projectList
*/
public List<Project> getProjectList() {
return projectList;
}
/**
* @param projectList the projectList to set
*/
public void setProjectList(List<Project> projectList) {
this.projectList = projectList;
}
public String viewSprints() {
return "/sprint/show";
}
}