50 lines
1.1 KiB
Java
50 lines
1.1 KiB
Java
package exercise2_ws;
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import javax.ejb.LocalBean;
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import javax.ejb.Stateless;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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import javax.persistence.Query;
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import javax.validation.constraints.NotNull;
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import java.util.List;
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/**
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* Created by Giovanni on 24/05/2015.
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*/
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@Stateless
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@LocalBean
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@ws
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public class EJBBook implements RemoteInterface {
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@PersistenceContext(unitName = "exercise2ws")
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EntityManager em ;
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public void create_book (@NotNull Book s) {
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em.persist(s);
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}
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public void update_book (@NotNull Book s) {
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em.merge(s);
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em.persist(s);
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}
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public void delete_book (@NotNull Book s) {
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em.merge(s);
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em.remove(s);
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}
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public @NotNull List<Book> findbyisbn (@NotNull String in_isbn) {
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Query Q = em.createNamedQuery("findbyisbnws");
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Q.setParameter(1, in_isbn);
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return (List<Book>)Q.getResultList();
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}
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public List<Book> findall () {
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Query Q = em.createNamedQuery("findallws");
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return (List<Book>)Q.getResultList();
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}
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}
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