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/*
* $RCSFile$
*
* Created on 11.06.2007
* for Project:
* by steins
*
* (C) 2005-2006 by
*/
package beans;
import java.io.IOException;
import java.util.Map;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;
import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;
import javax.servlet.http.HttpSession;
import jpa.Category;
import jpa.EntityManagerFactorySingleton;
import jpa.Product;
@ManagedBean(name = "ProductManager")
@SessionScoped
public class ProductManager {
private Product current;
public Product getCurrent() {
return current;
}
public void select(javax.faces.event.ActionEvent actionEvent) {
FacesContext context = FacesContext.getCurrentInstance();
Map params = context.getExternalContext().getRequestParameterMap();
int selectedId = Integer.valueOf((String) params.get("selectedId"), 10);
// System.out.println(selectedId);
EntityManager manager = EntityManagerFactorySingleton.getInstance().getEntityManagerFactory()
.createEntityManager();
EntityTransaction tx = manager.getTransaction();
tx.begin();
try {
current = manager.find(Product.class, selectedId);
tx.commit();
} catch (Exception ex) {
ex.printStackTrace(System.err);
tx.rollback();
}
try {
context.getExternalContext().redirect("product.jsf");
} catch (IOException e) {
e.printStackTrace();
}
context.responseComplete();
manager.close();
}
public void saveCurrentProduct() {
FacesContext context = FacesContext.getCurrentInstance();
EntityManager manager = EntityManagerFactorySingleton.getInstance().getEntityManagerFactory()
.createEntityManager();
EntityTransaction tx = manager.getTransaction();
HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);
CategoryManager cm = (CategoryManager) session.getAttribute("CategoryManager");
try {
tx.begin();
current = manager.merge(current);
cm.setCurrent(manager.find(Category.class, cm.getCurrent().getId()));
Category cat = manager.find(Category.class, cm.getCurrent().getId());
cat.getProducts().add(current);
manager.merge(cat);
cm.setCurrent(manager.find(Category.class, cm.getCurrent().getId()));
tx.commit();
} catch (Exception ex) {
ex.printStackTrace(System.err);
if (tx.isActive()) {
tx.rollback();
}
}
try {
context.getExternalContext().redirect("products.jsf");
} catch (IOException e) {
e.printStackTrace();
}
context.responseComplete();
manager.close();
}
public void newProduct() {
current = new Product();
FacesContext context = FacesContext.getCurrentInstance();
try {
context.getExternalContext().redirect("product.jsf");
} catch (IOException e) {
e.printStackTrace();
}
context.responseComplete();
}
public void deleteProduct(javax.faces.event.ActionEvent actionEvent) {
FacesContext context = FacesContext.getCurrentInstance();
Map params = context.getExternalContext().getRequestParameterMap();
int selectedId = Integer.valueOf((String) params.get("selectedId"), 10);
// System.out.println(selectedId);
EntityManager manager = EntityManagerFactorySingleton.getInstance().getEntityManagerFactory()
.createEntityManager();
HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);
CategoryManager cm = (CategoryManager) session.getAttribute("CategoryManager");
EntityTransaction tx = manager.getTransaction();
tx.begin();
try {
current = manager.find(Product.class, selectedId);
Category ca = manager.find(Category.class, cm.getCurrent().getId());
ca.getProducts().remove(current);
manager.merge(ca);
// Delete product only from this category if it is in other categories
if (current.getCategories().isEmpty()) {
manager.remove(current);
current = null;
}
cm.setCurrent(manager.find(Category.class, cm.getCurrent().getId()));
tx.commit();
} catch (Exception ex) {
ex.printStackTrace(System.err);
tx.rollback();
}
try {
context.getExternalContext().redirect("products.jsf");
} catch (IOException e) {
e.printStackTrace();
}
context.responseComplete();
manager.close();
}
}
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