Java Tutorial/Hibernate/Restrictions

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Logical Expression OR

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.Criterion; import org.hibernate.criterion.LogicalExpression; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setName("Survey1");
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   Criterion price = Restrictions.gt("Id",new Integer(1));
   Criterion name = Restrictions.like("name","S%");
   LogicalExpression orExp = Restrictions.or(price,name);
   crit.add(orExp);
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>





Restriction: EQ

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   crit.add(Restrictions.eq("name","Survey"));
   
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>





Restriction: GT

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.MatchMode; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setName("Survey1");
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   crit.add(Restrictions.gt("Id",new Integer(0)));
   
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>





Restriction:ILIKE

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.MatchMode; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setName("Survey1");
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   crit.add(Restrictions.ilike("name","Sur", MatchMode.END));
   
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>





Restriction:IS NULL

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.MatchMode; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   crit.add(Restrictions.isNull("name"));
   
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>





Restriction: LIKE

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setName("Survey1");
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   crit.add(Restrictions.like("name","Survey%"));
   
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>





Restrictions.Disjunction

File: Main.java



   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Session; import org.hibernate.criterion.Criterion; import org.hibernate.criterion.Disjunction; import org.hibernate.criterion.Restrictions; public class Main { 

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setName("Survey1");
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Criteria crit = session.createCriteria(Survey.class);
   Criterion price = Restrictions.gt("Id",new Integer(0));
   Criterion name = Restrictions.like("name","S%");
   Disjunction disjunction = Restrictions.disjunction();
   disjunction.add(price);
   disjunction.add(name);
   crit.add(disjunction);
   
   List results = crit.list();
   
   Iterator iter = results.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println("Result Name:"+cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>


Источник — «http://jexp.ru/index.php?title=Java_Tutorial/Hibernate/Restrictions&oldid=4508»