From 77ae72098cba433ca18456ddb0d43b50451edc5f Mon Sep 17 00:00:00 2001
From: William Moreno <32917746+WearyJunger@users.noreply.github.com>
Date: Mon, 8 Oct 2018 15:12:14 -0500
Subject: [PATCH] Add files via upload

---
 Conexion.java | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Conexion.java

diff --git a/Conexion.java b/Conexion.java
new file mode 100644
index 0000000..ef0eb8c
--- /dev/null
+++ b/Conexion.java
@@ -0,0 +1,87 @@
+package util;
+
+import java.util.List; 
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+import javax.persistence.TypedQuery;
+
+
+
+public class Conexion<T> {
+	private Class<T> c;
+	private static EntityManager em = null;
+	
+	public Conexion() {
+		em = this.getEm();
+	}
+	
+	public Conexion(Class<T> c) {
+		em = this.getEm();
+		this.c = c;
+	}
+	
+	public void setC(Class<T> c){
+		this.c = c;
+	}
+	
+	public static EntityManager getEm(){
+		if ( em == null ) {
+			EntityManagerFactory emf = Persistence.createEntityManagerFactory("makabi");
+            em = emf.createEntityManager();
+        }
+		return em;
+	}
+	
+	public <E> T find(E id){
+		T object = (T) em.find(c, id);
+		return object;
+	}
+	
+	public List<T> list(){
+		TypedQuery<T> consulta= em.createNamedQuery(c.getSimpleName()+".findAll", c);
+		List<T> lista = (List<T>) consulta.getResultList();
+		return lista;
+	}
+	
+	
+	public void insert(T o){
+		try {
+			em.getTransaction().begin();
+			em.persist(o);
+			em.getTransaction().commit();
+		} catch (Exception e) {
+			e.printStackTrace();
+		}finally {
+			//em.close();
+		}
+		
+	}
+	
+	public void update(T o){
+		try {
+			em.getTransaction().begin();
+			em.merge(o);
+			em.getTransaction().commit();
+		} catch (Exception e) {
+			e.printStackTrace();
+		}finally {
+			//em.close();
+		}
+		
+	}
+	
+	public void delete(T o){
+		try {
+			em.getTransaction().begin();
+			em.remove(o);
+			em.getTransaction().commit();
+		} catch (Exception e) {
+			e.printStackTrace();
+		}finally {
+		//	em.close();
+		}
+		
+	}
+}