esercizi webservices wsdl

exam/EJB.java

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+package exam;
+
+import javax.ejb.LocalBean;
+import javax.ejb.Stateless;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import javax.persistence.Query;
+import java.util.List;
+
+/**
+ * Created by Giovanni on 16/06/2015.
+ */
+
+@Stateless
+@LocalBean
+
+public class EJB implements RemoteEJB{
+
+    @PersistenceContext(unitName = "exam")
+    EntityManager em ;
+
+
+    public void createCD (CD c){
+        em.persist(c);
+    }
+
+    public void updateCD (CD c) {
+        em.merge(c);
+        em.persist(c);
+    }
+
+    public void removeCD (CD c){
+        em.merge(c);
+        em.remove(c);
+    }
+
+
+    public List<CD> findall() {
+        Query q = em.createNamedQuery("findall");
+        return (List<CD>) q. getResultList();
+
+    }
+
+
+    public List<CD> findauthor(String author_in) {
+        Query q = em.createNamedQuery("findauthor");
+        q.setParameter(1,author_in);
+        return (List<CD>) q. getResultList();
+    }
+
+
+    public List<CD> findid(String id_in) {
+        Query q = em.createNamedQuery("findid");
+        q.setParameter(1,id_in);
+        return (List<CD>) q. getResultList();
+    }
+}