Java/Hibernate/Criteria Equal Not Equal
Query Criteria Equal
<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.eq( "name", "testSave" ) ); 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>
Query Criteria Id: data type Long
<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.idEq( 11111L) ); crit.setMaxResults(1); List results = crit.list(); System.out.println(results.size()); tx.rumit(); HibernateUtil.closeSession(); HibernateUtil.sessionFactory.close(); // hibernate code end }
}
///////////////////////////////////////////////////////////////////////// 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"?>
<!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>
///////////////////////////////////////////////////////////////////////// <?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>
Query Criteria: Not Equal
<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.ne( "name", "noName" ) ); 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>