Java/Hibernate/Criteria Data Type

Criteria: Condition Double Value Compare

   <source lang="java">

///////////////////////////////////////////////////////////////////////// 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>
       
       <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>
       
       <property name="connection.pool_size">1</property>
       
       <property name="dialect">org.hibernate.dialect.HSQLDialect</property>
       
       <property name="show_sql">true</property>
       
       <mapping resource="Product.hbm.xml"/>
       <mapping resource="Supplier.hbm.xml"/>
   </session-factory>

</hibernate-configuration>

      </source>
   
  
 
  

Query Criteria Greater To Equal for Date data type

   <source lang="java">

///////////////////////////////////////////////////////////////////////// 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>

   <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>
       
       <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>
       
       <property name="connection.pool_size">1</property>
       
       <property name="dialect">org.hibernate.dialect.HSQLDialect</property>
       
       <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>

      </source>