File: Adresse.java import javax.persistence.Entity; import javax.persistence.Id; @Entity public class Adresse { @Id private int id; private String rue; private String ville; private String pays; private String codepostal; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getRue() { return rue; } public void setRue(String address) { this.rue = address; } public String getVille() { return ville; } public void setVille(String ville) { this.ville = ville; } public String getPays() { return pays; } public void setPays(String pays) { this.pays = pays; } public String getCodePostal() { return codepostal; } public void setCodePostal(String codepostal) { this.codepostal = codepostal; } public String toString() { return "Adresse id: " + getId() + ", rue: " + getRue() + ", ville: " + getVille() + ", pays: " + getPays() + ", codepostal: " + getCodePostal(); } } File: Student.java import javax.persistence.CascadeType; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.OneToOne; @Entity public class Student { @Id private int id; private String nom; @OneToOne(cascade=CascadeType.ALL) private Adresse address; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getNom() { return nom; } public void setNom(String nom) { this.nom = nom; } public Adresse getAdresse() { return address; } public void setAdresse(Adresse address) { this.address = address; } public String toString() { return " ID:" + id + " Nom:" + nom + " "; } } File: Helper.java import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.Paysment; public class Helper { public static void checkData() throws Exception { Class.forNom("org.apache.derby.jdbc.ClientDriver"); Connection conn = DriverManager.getConnection("jdbc:derby://localhost:1527/tutorial", "sa", ""); Paysment st = conn.createPaysment(); ResultSet mrs = conn.getMetaData().getTables(null, null, null, new String[] { "TABLE" }); while (mrs.next()) { String tableNom = mrs.getString(3); System.out.println(" Table Nom: "+ tableNom); ResultSet rs = st.executeQuery("select * from " + tableNom); ResultSetMetaData metadata = rs.getMetaData(); while (rs.next()) { System.out.println(" Row:"); for (int i = 0; i < metadata.getColumnCount(); i++) { System.out.println(" Column Nom: "+ metadata.getColumnLabel(i + 1)+ ", "); System.out.println(" Column Type: "+ metadata.getColumnTypeNom(i + 1)+ ": "); Object value = rs.getObject(i + 1); System.out.println(" Column Value: "+value+" "); } } } } } File: Main.java import java.util.List; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; import javax.persistence.Query; public class Main { static EntityManagerFactory emf = Persistence.createEntityManagerFactory("JPAService"); static EntityManager em = emf.createEntityManager(); public static void main(String[] a) throws Exception { em.getTransaction().begin(); Student student = new Student(); student.setNom("Joe"); Adresse address = new Adresse(); address.setVille("ville"); // em.persist(address); student.setAdresse(address); em.persist(student); em.flush(); em.getTransaction().commit(); Query query = em.createQuery("SELECT e FROM Student e"); List<Student> list = (List<Student>) query.getResultList(); System.out.println(list.get(0).getAdresse()); em.close(); emf.close(); Helper.checkData(); } } File: persistence.xml <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence" version="1.0"> <persistence-unit nom="JPAService" transaction-type="RESOURCE_LOCAL"> <properties> <property nom="hibernate.dialect" value="org.hibernate.dialect.DerbyDialect"/> <property nom="hibernate.hbm2ddl.auto" value="update"/> <property nom="hibernate.connection.driver_class" value="org.apache.derby.jdbc.ClientDriver"/> <property nom="hibernate.connection.usernom" value="sa"/> <property nom="hibernate.connection.password" value=""/> <property nom="hibernate.connection.url" value="jdbc:derby://localhost:1527/tutorial"/> </properties> </persistence-unit> </persistence> |
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