DAO

src/main/java/DAO/TousDAOImpl.java

@@ -0,0 +1,31 @@
+package DAO;
+
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.EntityTransaction;
+import jakarta.persistence.PersistenceException;
+import jpa.EntityManagerHelper;
+
+import java.io.Serializable;
+
+public abstract class TousDAOImpl<T, Id extends Serializable> implements Tous<T, Id> {
+    protected EntityManager em;
+    private Class<T> entityClass;
+
+    public TousDAOImpl() {
+        this.em = EntityManagerHelper.getEntityManager();
+    }
+
+    @Override
+    public T save(T t) {
+        EntityTransaction tx = em.getTransaction();
+        try {
+            tx.begin();
+            em.persist(t);
+            tx.commit();
+            return t;
+        } catch (PersistenceException e) {
+            throw new PersistenceException(e.getMessage());
+        }
+    }
+}
+