Source Code : Enumerated EnumType ORDINAL

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Enumerated EnumType ORDINAL

File: Student.java

import java.util.Date;

import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.Id;

@Entity
public class Student {
  @Id
  private long id = 0;

  private String name;

  private Date dateOfBirth = new Date();

  @Enumerated(EnumType.ORDINAL)
  private Gender gender;

  public Date getDateOfBirth() {
    return dateOfBirth;
  }

  public void setDateOfBirth(Date dateOfBirth) {
    this.dateOfBirth = dateOfBirth;
  }

  public long getId() {
    return id;
  }

  public void setId(long id) {
    this.id = id;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public Gender getGender() {
    return gender;
  }

  public void setGender(Gender gender) {
    this.gender = gender;
  }

  public String toString() {
    return "

ID:" + id + "
Name:" + name + "
Birthday:" + dateOfBirth + "
Gender:"
        + gender+"

";
  }
}


File: Gender.java

public enum Gender {
  MALE, FEMALE
}


File: JPADAO.java

import java.util.Date;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;

public class JPADAO {
  EntityManagerFactory emf = Persistence.createEntityManagerFactory("JPAService");
  EntityManager em = emf.createEntityManager();

  public void create() {
    em.getTransaction().begin();
    
    
    Student student = new Student();
    student.setId(1);
    student.setName("Joe");
    student.setDateOfBirth(new Date());
    student.setGender(Gender.FEMALE);
    
    
    em.persist(student);
    em.flush();
    em.getTransaction().commit();
  }

  public void search() {
    Query q = em.createQuery("select m from Student m");
    for (Student m : (List<Student>) q.getResultList()) {
      System.out.println(m);
    }
  }

  public void close() {
    em.close();
    emf.close();
  }
}


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 {
  public static void main(String[] a) throws Exception {
    JPADAO jpaDao = new JPADAO();
    
    jpaDao.create();
    jpaDao.search();
    
    
    jpaDao.close();
    Helper.checkData();
  }
}
/*

    [java] Table Name: STUDENT
    [java]  Row:
    [java]     Column Name: ID,
    [java]     Column Type: BIGINT:
    [java]     Column Value: 1

    [java]     Column Name: DATEOFBIRTH,
    [java]     Column Type: TIMESTAMP:
    [java]     Column Value: 2008-11-05 13:32:00.35

    [java]     Column Name: GENDER,
    [java]     Column Type: VARCHAR:
    [java]     Column Value: FEMALE

    [java]     Column Name: NAME,
    [java]     Column Type: VARCHAR:
    [java]     Column Value: Joe


*/


File: Helper.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;

public class Helper {
  public static void checkData() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    Connection conn = DriverManager.getConnection("jdbc:hsqldb:data/tutorial", "sa", "");
    Statement st = conn.createStatement();

    ResultSet mrs = conn.getMetaData().getTables(null, null, null, new String[] { "TABLE" });
    while (mrs.next()) {
      String tableName = mrs.getString(3);
      System.out.println("



Table Name: "+ tableName);

      ResultSet rs = st.executeQuery("select * from " + tableName);
      ResultSetMetaData metadata = rs.getMetaData();
      while (rs.next()) {
        System.out.println(" Row:");
        for (int i = 0; i < metadata.getColumnCount(); i++) {
          System.out.println("    Column Name: "+ metadata.getColumnLabel(i + 1)+ ",  ");
          System.out.println("    Column Type: "+ metadata.getColumnTypeName(i + 1)+ ":  ");
          Object value = rs.getObject(i + 1);
          System.out.println("    Column Value: "+value+"
");
        }
      }
    }
  }
}






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 name="JPAService" transaction-type="RESOURCE_LOCAL">
    <properties>
      <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
      <property name="hibernate.hbm2ddl.auto" value="update"/>
      <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver"/>
      <property name="hibernate.connection.username" value="sa"/>
      <property name="hibernate.connection.password" value=""/>
      <property name="hibernate.connection.url" value="jdbc:hsqldb:data/tutorial"/>
    </properties>
  </persistence-unit>
</persistence>


           
       

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