Java/Hibernate/Criteria Data Type

Criteria: Condition Double Value Compare

/////////////////////////////////////////////////////////////////////////
import java.util.*;
import java.sql.*;
import org.hibernate.*;
import org.hibernate.criterion.*;
public class Main {
  
  public static void main(String[] args) {
    HibernateUtil.setup("create table Supplier ( id int, name VARCHAR);");
    HibernateUtil.setup("create table Product ( id int, name VARCHAR, description VARCHAR, price double,supplierId int);");
    
    prepareData();
    Session session = HibernateUtil.currentSession();
    
        Criteria crit = session.createCriteria(Product.class);
        crit.add(Restrictions.gt("price",new Double(25.0)));
        List results = crit.list();
        displayProductsList(results);
    
    
        HibernateUtil.checkData("select * from Supplier");
        HibernateUtil.checkData("select * from Product");
  }
    public static void displayProductsList(List list){
        Iterator iter = list.iterator();
        if (!iter.hasNext()){
            System.out.println("No products to display.");
            return;
        }
        while (iter.hasNext()){
            Product product = (Product) iter.next();
            String msg = product.getSupplier().getName() + "\t";
            msg += product.getName() + "\t";
            msg += product.getPrice() + "\t";
            msg += product.getDescription();
            System.out.println(msg);
        }
    }
  private static void prepareData(){
        Session session = HibernateUtil.currentSession();
        Supplier supplier1 = new Supplier();
        supplier1.setName("Supplier Name 1");
        session.save(supplier1);
        
        Supplier supplier2 = new Supplier();
        supplier2.setName("Supplier Name 2");
        session.save(supplier2);        
        
        Product product1 = new Product("Product 1","Name for Product 1", 2.0);
        product1.setSupplier(supplier1);
        supplier1.getProducts().add(product1);
        session.save(product1);
        
        Product product12 = new Product("Product 2","Name for Product 2", 22.0);
        product12.setSupplier(supplier1);
        supplier1.getProducts().add(product12);        
        session.save(product12);
        
        Product product2 = new Product("Product 3", "Name for Product 3", 30.0);
        product2.setSupplier(supplier2);
        supplier2.getProducts().add(product2);
        session.save(product2);
        
        session.flush();
        HibernateUtil.closeSession();
  }
}

/////////////////////////////////////////////////////////////////////////
public class Product
{
    private int id;
    private Supplier supplier;
    
    private String name;
    private String description;
    private double price;
    
    public Product()
    {
        super();
    }
    
    public Product(String name, String description, double price)
    {
        super();
        this.name = name;
        this.description = description;
        this.price = price;
    }
    
    public String getDescription()
    {
        return description;
    }
    public void setDescription(String description)
    {
        this.description = description;
    }
    public int getId()
    {
        return id;
    }
    public void setId(int id)
    {
        this.id = id;
    }
    public String getName()
    {
        return name;
    }
    public void setName(String name)
    {
        this.name = name;
    }
 
    public Supplier getSupplier()
    {
        return supplier;
    }
    public void setSupplier(Supplier supplier)
    {
        this.supplier = supplier;
    }
    
    public double getPrice()
    {
        return price;
    }
    public void setPrice(double price)
    {
        this.price = price;
    }
}

/////////////////////////////////////////////////////////////////////////
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping
   PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
   "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
   <class name="Supplier">
      <id name="id" type="int">
         <generator class="increment"/>
      </id>
      <property name="name" type="string"/>
      <bag name="products" inverse="true" cascade="all,delete-orphan">
        <key column="supplierId"/>
        <one-to-many class="Product"/>
      </bag>

   </class>
</hibernate-mapping>

/////////////////////////////////////////////////////////////////////////
import java.util.ArrayList;
import java.util.List;
public class Supplier
{
    private int id;
    private String name;
    private List products = new ArrayList();
    
    public int getId()
    {
        return id;
    }
    public void setId(int id)
    {
        this.id = id;
    }
    public String getName()
    {
        return name;
    }
    public void setName(String name)
    {
        this.name = name;
    }
    public List getProducts()
    {
        return products;
    }
    public void setProducts(List products)
    {
        this.products = products;
    }
}

/////////////////////////////////////////////////////////////////////////
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <!-- Database connection settings -->
        <property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
        <property name="connection.url">jdbc:hsqldb:data/tutorial</property>
        <property name="connection.username">sa</property>
        <property name="connection.password"></property>
        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>
        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.HSQLDialect</property>
        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>
        <!-- Mapping files -->
        <mapping resource="Product.hbm.xml"/>
        <mapping resource="Supplier.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

Query Criteria Greater To Equal for Date data type

/////////////////////////////////////////////////////////////////////////
import java.util.*;
import org.hibernate.*;
import org.hibernate.criterion.*;
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);
    session.save(e);
        Criteria crit = session.createCriteria(Event.class);
        crit.add( Expression.ge("startDate",new Date()) );
        crit.setMaxResults(1);
        List results = crit.list();
        System.out.println(results.size());
        tx.rumit();
    HibernateUtil.closeSession();
    HibernateUtil.sessionFactory.close();
    // hibernate code end
  }
}

/////////////////////////////////////////////////////////////////////////
<?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>


/////////////////////////////////////////////////////////////////////////
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;
    }

}

/////////////////////////////////////////////////////////////////////////
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <!-- Database connection settings -->
        <property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
        <property name="connection.url">jdbc:hsqldb:data/tutorial</property>
        <property name="connection.username">sa</property>
        <property name="connection.password"></property>
        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>
        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.HSQLDialect</property>
        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>
        <mapping resource="Event.hbm.xml"/>
        <mapping resource="Location.hbm.xml"/>
        <mapping resource="Speaker.hbm.xml"/>
    </session-factory>
</hibernate-configuration>