Simple Query Queries That Returns Tuples
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import java.util.*;
import org.hibernate.Session;
import org.hibernate.Hibernate;
import org.hibernate.Transaction;
public class SimpleRetrieveTest {
public static void main(String[] args) {
HibernateUtil.setup("create table EVENTS ( uid int, name VARCHAR, start_Date date, duration int, location_id int);");
HibernateUtil.setup("create table locations ( uid int, name VARCHAR, address VARCHAR);");
// hibernate code start
Session session = HibernateUtil.currentSession();
Transaction tx = session.beginTransaction();
Location location = new Location();
location.setName("USA");
location.setAddress("Address");
session.save(location);
Event e= new Event();
e.setId(11111L);
e.setName("testSave");
e.setStartDate(new Date());
e.setLocation(location);
e.setName("testSave");
session.save(e);
Iterator iter = session.createQuery("select e.name, e.location from Event e where e.name=?").setString(0, "testSave").iterate();
while ( iter.hasNext() ) {
Object[] tuple = (Object[]) iter.next();
System.out.println(tuple[0]);
System.out.println(tuple[1]);
}
tx.commit();
HibernateUtil.closeSession();
HibernateUtil.sessionFactory.close();
// hibernate code end
}
}
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<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping >
<class name="Location" table="locations" lazy="true">
<id name="id" column="uid" type="long">
<generator class="native"/>
</id>
<property name="name" type="string"/>
<property name="address" type="string"/>
</class>
</hibernate-mapping>
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public class Location {
private Long id;
private String name;
private String address;
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 String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
/////////////////////////////////////////////////////////////////////////
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<!--
This is a simplified version of the Event class used to
demonstrate proxies.
-->
<class name="Event" table="events">
<id name="id" column="uid" type="long" unsaved-value="null">
<generator class="assigned"/>
</id>
<property name="name" type="string" length="100"/>
<property name="startDate" column="start_date"
type="date"/>
<property name="duration" type="integer"/>
<many-to-one name="location" column="location_id"
class="Location"/>
</class>
</hibernate-mapping>
/////////////////////////////////////////////////////////////////////////
import java.util.Date;
public class Event {
private Long id;
private String name;
private Date startDate;
private int duration;
private Location location;
public void setId(Long id) {
this.id = id;
}
public Long getId() {
return id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getStartDate() {
return startDate;
}
public void setStartDate(Date startDate) {
this.startDate = startDate;
}
public int getDuration() {
return duration;
}
public void setDuration(int duration) {
this.duration = duration;
}
public Location getLocation() {
return location;
}
public void setLocation(Location location) {
this.location = location;
}
}
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