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Hibernate Criteria Query (#592)

Browse Source 
* BAEL-212
Contains:
1. Hibernate Criteria Query Classes
2. Hibernate Criteria Query Test

* Updating the config file and the HibernateUtil class

* Hibernate Criteria Queries Example

* Hibernate Fetching : Eager Loading vs Lazy Loading

* Hibernate Criteria Query files
This commit is contained in:
PRITAM BANERJEE 2016-08-10 02:36:14 -07:00 committed by Grzegorz Piwowarek
parent 31d9e1bef6
commit ee0e14e590
25 changed files with 1174 additions and 36 deletions
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22
spring-hibernate4/src/main/java/com/baeldung/hibernate/criteria/model/Item.hbm.xml Normal file
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<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.baeldung.hibernate.criteria.model.Item" table="ITEM">
<id name="itemId" type="java.lang.Integer">
<column name="ITEM_ID" />
<generator class="identity" />
</id>
<property name="itemDescription" type="string">
<column name="ITEM_DESC" length="100" />
</property>
<property name="itemPrice" type="java.lang.Integer">
<column name="ITEM_PRICE" not-null="true" />
</property>
<property name="itemName" type="string">
<column name="ITEM_NAME" not-null="true" />
</property>
</class>
</hibernate-mapping>

81
spring-hibernate4/src/main/java/com/baeldung/hibernate/criteria/model/Item.java Normal file
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package com.baeldung.hibernate.criteria.model;
import java.io.Serializable;
public class Item implements Serializable {
private static final long serialVersionUID = 1L;
private Integer itemId;
private String itemName;
private String itemDescription;
private Integer itemPrice;
// constructors
public Item() {
}
public Item(final Integer itemId, final String itemName, final String itemDescription) {
super();
this.itemId = itemId;
this.itemName = itemName;
this.itemDescription = itemDescription;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((itemId == null) ? 0 : itemId.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final Item other = (Item) obj;
if (itemId == null) {
if (other.itemId != null)
return false;
} else if (!itemId.equals(other.itemId))
return false;
return true;
}
public Integer getItemId() {
return itemId;
}
public void setItemId(final Integer itemId) {
this.itemId = itemId;
}
public String getItemName() {
return itemName;
}
public void setItemName(final String itemName) {
this.itemName = itemName;
}
public String getItemDescription() {
return itemDescription;
}
public Integer getItemPrice() {
return itemPrice;
}
public void setItemPrice(final Integer itemPrice) {
this.itemPrice = itemPrice;
}
public void setItemDescription(final String itemDescription) {
this.itemDescription = itemDescription;
}
}

20
spring-hibernate4/src/main/java/com/baeldung/hibernate/criteria/util/HibernateUtil.java Normal file
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package com.baeldung.hibernate.criteria.util;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil {
@SuppressWarnings("deprecation")
public static Session getHibernateSession() {
final SessionFactory sf = new Configuration()
.configure("criteria.cfg.xml").buildSessionFactory();
// factory = new Configuration().configure().buildSessionFactory();
final Session session = sf.openSession();
return session;
}
}

253
spring-hibernate4/src/main/java/com/baeldung/hibernate/criteria/view/ApplicationView.java Normal file
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/**
* ApplicationViewer is the class that starts the application
* First it creates the session object and then creates the
* criteria query.
*
* @author Pritam Banerjee
* @version 1.0
* @since 07/20/2016
*/
package com.baeldung.hibernate.criteria.view;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.LogicalExpression;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import com.baeldung.hibernate.criteria.model.Item;
import com.baeldung.hibernate.criteria.util.HibernateUtil;
public class ApplicationView {
// default Constructor
public ApplicationView() {
}
public boolean checkIfCriteriaTimeLower() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
Transaction tx = null;
// calculate the time taken by criteria
final long startTimeCriteria = System.nanoTime();
cr.add(Restrictions.like("itemName", "%item One%"));
final List results = cr.list();
final long endTimeCriteria = System.nanoTime();
final long durationCriteria = (endTimeCriteria - startTimeCriteria) / 1000;
// calculate the time taken by HQL
final long startTimeHQL = System.nanoTime();
tx = session.beginTransaction();
final List items = session.createQuery("FROM Item where itemName like '%item One%'").list();
final long endTimeHQL = System.nanoTime();
final long durationHQL = (endTimeHQL - startTimeHQL) / 1000;
if (durationCriteria > durationHQL) {
return false;
} else {
return true;
}
}
// To get items having price more than 1000
public String[] greaterThanCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.gt("itemPrice", 1000));
final List<Item> greaterThanItemsList = cr.list();
final String greaterThanItems[] = new String[greaterThanItemsList.size()];
for (int i = 0; i < greaterThanItemsList.size(); i++) {
greaterThanItems[i] = greaterThanItemsList.get(i).getItemName();
}
session.close();
return greaterThanItems;
}
// To get items having price less than 1000
public String[] lessThanCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.lt("itemPrice", 1000));
final List<Item> lessThanItemsList = cr.list();
final String lessThanItems[] = new String[lessThanItemsList.size()];
for (int i = 0; i < lessThanItemsList.size(); i++) {
lessThanItems[i] = lessThanItemsList.get(i).getItemName();
}
session.close();
return lessThanItems;
}
// To get items whose Name start with Chair
public String[] likeCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.like("itemName", "%chair%"));
final List<Item> likeItemsList = cr.list();
final String likeItems[] = new String[likeItemsList.size()];
for (int i = 0; i < likeItemsList.size(); i++) {
likeItems[i] = likeItemsList.get(i).getItemName();
}
session.close();
return likeItems;
}
// Case sensitive search
public String[] likeCaseCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.ilike("itemName", "%Chair%"));
final List<Item> ilikeItemsList = cr.list();
final String ilikeItems[] = new String[ilikeItemsList.size()];
for (int i = 0; i < ilikeItemsList.size(); i++) {
ilikeItems[i] = ilikeItemsList.get(i).getItemName();
}
session.close();
return ilikeItems;
}
// To get records having itemPrice in between 100 and 200
public String[] betweenCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
// To get items having price more than 1000
cr.add(Restrictions.between("itemPrice", 100, 200));
final List<Item> betweenItemsList = cr.list();
final String betweenItems[] = new String[betweenItemsList.size()];
for (int i = 0; i < betweenItemsList.size(); i++) {
betweenItems[i] = betweenItemsList.get(i).getItemName();
}
session.close();
return betweenItems;
}
// To check if the given property is null
public String[] nullCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.isNull("itemDescription"));
final List<Item> nullItemsList = cr.list();
final String nullDescItems[] = new String[nullItemsList.size()];
for (int i = 0; i < nullItemsList.size(); i++) {
nullDescItems[i] = nullItemsList.get(i).getItemName();
}
session.close();
return nullDescItems;
}
// To check if the given property is not null
public String[] notNullCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.isNotNull("itemDescription"));
final List<Item> notNullItemsList = cr.list();
final String notNullDescItems[] = new String[notNullItemsList.size()];
for (int i = 0; i < notNullItemsList.size(); i++) {
notNullDescItems[i] = notNullItemsList.get(i).getItemName();
}
session.close();
return notNullDescItems;
}
// Adding more than one expression in one cr
public String[] twoCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.add(Restrictions.isNull("itemDescription"));
cr.add(Restrictions.like("itemName", "chair%"));
final List<Item> notNullItemsList = cr.list();
final String notNullDescItems[] = new String[notNullItemsList.size()];
for (int i = 0; i < notNullItemsList.size(); i++) {
notNullDescItems[i] = notNullItemsList.get(i).getItemName();
}
session.close();
return notNullDescItems;
}
// To get items matching with the above defined conditions joined
// with Logical AND
public String[] andLogicalCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
final Criterion greaterThanPrice = Restrictions.gt("itemPrice", 1000);
final Criterion chairItems = Restrictions.like("itemName", "Chair%");
final LogicalExpression andExample = Restrictions.and(greaterThanPrice, chairItems);
cr.add(andExample);
final List<Item> andItemsList = cr.list();
final String andItems[] = new String[andItemsList.size()];
for (int i = 0; i < andItemsList.size(); i++) {
andItems[i] = andItemsList.get(i).getItemName();
}
session.close();
return andItems;
}
// To get items matching with the above defined conditions joined
// with Logical OR
public String[] orLogicalCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
final Criterion greaterThanPrice = Restrictions.gt("itemPrice", 1000);
final Criterion chairItems = Restrictions.like("itemName", "Chair%");
final LogicalExpression orExample = Restrictions.or(greaterThanPrice, chairItems);
cr.add(orExample);
final List<Item> orItemsList = cr.list();
final String orItems[] = new String[orItemsList.size()];
for (int i = 0; i < orItemsList.size(); i++) {
orItems[i] = orItemsList.get(i).getItemName();
}
session.close();
return orItems;
}
// Sorting example
public String[] sortingCriteria() {
final Session session = HibernateUtil.getHibernateSession();
final Criteria cr = session.createCriteria(Item.class);
cr.addOrder(Order.asc("itemName"));
cr.addOrder(Order.desc("itemPrice")).list();
final List<Item> sortedItemsList = cr.list();
final String sortedItems[] = new String[sortedItemsList.size()];
for (int i = 0; i < sortedItemsList.size(); i++) {
sortedItems[i] = sortedItemsList.get(i).getItemName();
}
session.close();
return sortedItems;
}
// Set projections Row Count
public Long[] projectionRowCount() {
final Session session = HibernateUtil.getHibernateSession();
final List<Long> itemProjected = session.createCriteria(Item.class).setProjection(Projections.rowCount())
.list();
final Long projectedRowCount[] = new Long[itemProjected.size()];
for (int i = 0; i < itemProjected.size(); i++) {
projectedRowCount[i] = itemProjected.get(i);
}
session.close();
return projectedRowCount;
}
// Set projections average of itemPrice
public Double[] projectionAverage() {
final Session session = HibernateUtil.getHibernateSession();
final List avgItemPriceList = session.createCriteria(Item.class)
.setProjection(Projections.projectionList().add(Projections.avg("itemPrice"))).list();
final Double avgItemPrice[] = new Double[avgItemPriceList.size()];
for (int i = 0; i < avgItemPriceList.size(); i++) {
avgItemPrice[i] = (Double) avgItemPriceList.get(i);
}
session.close();
return avgItemPrice;
}
}

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spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/model/OrderDetail.hbm.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.baeldung.hibernate.fetching.model.OrderDetail" table="USER_ORDER">
<id name="orderId" type="java.lang.Long" column="ORDER_ID" >
<generator class="native" />
</id>
<property name="orderDate" type="date">
<column name="ORDER_DATE" />
</property>
<property name="orderDesc" type="string">
<column name="ORDER_DESC" not-null="true" />
</property>
<many-to-one name="user" class="com.baeldung.hibernate.fetching.model.User" fetch="select">
<column name="user_id" not-null="true" />
</many-to-one>
</class>
</hibernate-mapping>

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spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/model/OrderDetail.java Normal file
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package com.baeldung.hibernate.fetching.model;
import java.io.Serializable;
import java.sql.Date;
public class OrderDetail implements Serializable{
private static final long serialVersionUID = 1L;
private Long orderId;
private Date orderDate;
private String orderDesc;
private User user;
public OrderDetail(){
}
public OrderDetail(Date orderDate, String orderDesc) {
super();
this.orderDate = orderDate;
this.orderDesc = orderDesc;
}
public Date getOrderDate() {
return orderDate;
}
public void setOrderDate(Date orderDate) {
this.orderDate = orderDate;
}
public String getOrderDesc() {
return orderDesc;
}
public void setOrderDesc(String orderDesc) {
this.orderDesc = orderDesc;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((orderId == null) ? 0 : orderId.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
OrderDetail other = (OrderDetail) obj;
if (orderId == null) {
if (other.orderId != null)
return false;
} else if (!orderId.equals(other.orderId))
return false;
return true;
}
public Long getOrderId() {
return orderId;
}
public void setOrderId(Long orderId) {
this.orderId = orderId;
}
}

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spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/model/User.hbm.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.baeldung.hibernate.fetching.model.User" table="USER">
<id name="userId" type="long" unsaved-value="null">
<column name="USER_ID" />
<generator class="native" />
</id>
<property name="userName" type="string">
<column name="USERNAME" length="100" />
</property>
<property name="firstName" type="string">
<column name="FIRST_NAME" not-null="true" />
</property>
<property name="lastName" type="string">
<column name="LAST_NAME" not-null="true" />
</property>
<set name="orderDetail" table="USER_ORDER"
inverse="true" lazy="false" fetch="select">
<key>
<column name="USER_ID" not-null="true" />
</key>
<one-to-many class="com.baeldung.hibernate.fetching.model.OrderDetail" />
</set>
</class>
</hibernate-mapping>

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spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/model/User.java Normal file
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package com.baeldung.hibernate.fetching.model;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
public class User implements Serializable {
private static final long serialVersionUID = 1L;
private Long userId;
private String userName;
private String firstName;
private String lastName;
private Set<OrderDetail> orderDetail = new HashSet<OrderDetail>();
public User() {
}
public User(final Long userId, final String userName, final String firstName, final String lastName) {
super();
this.userId = userId;
this.userName = userName;
this.firstName = firstName;
this.lastName = lastName;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((userId == null) ? 0 : userId.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final User other = (User) obj;
if (userId == null) {
if (other.userId != null)
return false;
} else if (!userId.equals(other.userId))
return false;
return true;
}
public Long getUserId() {
return userId;
}
public void setUserId(final Long userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(final String userName) {
this.userName = userName;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(final String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(final String lastName) {
this.lastName = lastName;
}
public Set<OrderDetail> getOrderDetail() {
return orderDetail;
}
public void setOrderDetail(Set<OrderDetail> orderDetail) {
this.orderDetail = orderDetail;
}
}

31
spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/model/UserLazy.hbm.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.baeldung.hibernate.fetching.model.User" table="USER">
<id name="userId" type="long" unsaved-value="null">
<column name="USER_ID" />
<generator class="native" />
</id>
<property name="userName" type="string">
<column name="USERNAME" length="100" />
</property>
<property name="firstName" type="string">
<column name="FIRST_NAME" not-null="true" />
</property>
<property name="lastName" type="string">
<column name="LAST_NAME" not-null="true" />
</property>
<set name="orderDetail" table="USER_ORDER"
inverse="true" lazy="true" fetch="select">
<key>
<column name="USER_ID" not-null="true" />
</key>
<one-to-many class="com.baeldung.hibernate.fetching.model.OrderDetail" />
</set>
</class>
</hibernate-mapping>

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spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/util/HibernateUtil.java Normal file
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package com.baeldung.hibernate.fetching.util;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil {
private static SessionFactory factory;
@SuppressWarnings("deprecation")
public static Session getHibernateSession(String fetchMethod) {
//two config files are there
//one with lazy loading enabled
//another lazy = false
SessionFactory sf = null;
if ("lazy".equals(fetchMethod)) {
sf = new Configuration().configure("fetchingLazy.cfg.xml").buildSessionFactory();
} else {
sf = new Configuration().configure("fetching.cfg.xml").buildSessionFactory();
}
// fetching.cfg.xml is used for this example
final Session session = sf.openSession();
return session;
}
public static Session getHibernateSession() {
System.out.println("Loading eager");
SessionFactory sf = null;
sf = new Configuration().configure("fetching.cfg.xml").buildSessionFactory();
final Session session = sf.openSession();
return session;
}
}

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spring-hibernate4/src/main/java/com/baeldung/hibernate/fetching/view/FetchingAppView.java Normal file
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package com.baeldung.hibernate.fetching.view;
import java.sql.Date;
import java.util.List;
import java.util.Set;
import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.baeldung.hibernate.fetching.util.HibernateUtil;
import com.baeldung.hibernate.fetching.model.OrderDetail;
import com.baeldung.hibernate.fetching.model.User;
public class FetchingAppView {
public FetchingAppView(){
}
//lazily loaded
public boolean lazyLoaded(){
final Session sessionLazy = HibernateUtil.getHibernateSession("lazy");
List<User> users = sessionLazy.createQuery("From User").list();
User userLazyLoaded = new User();
userLazyLoaded = users.get(3);
//since data is lazyloaded so data won't be initialized
Set<OrderDetail> orderDetailSet = userLazyLoaded.getOrderDetail();
return (Hibernate.isInitialized(orderDetailSet));
}
//eagerly loaded
public boolean eagerLoaded(){
final Session sessionEager = HibernateUtil.getHibernateSession();
//data should be loaded in the following line
//also note the queries generated
List<User> users =sessionEager.createQuery("From User").list();
User userEagerLoaded = new User();
userEagerLoaded = users.get(3);
Set<OrderDetail> orderDetailSet = userEagerLoaded.getOrderDetail();
return (Hibernate.isInitialized(orderDetailSet));
}
//creates test data
//call this method to create the data in the database
public void createTestData() {
final Session session = HibernateUtil.getHibernateSession();
Transaction tx = null;
tx = session.beginTransaction();
final User user1 = new User();
final User user2 = new User();
final User user3 = new User();
user1.setFirstName("Priyam");
user1.setLastName("Banerjee");
user1.setUserName("priyambanerjee");
session.save(user1);
user2.setFirstName("Navneeta");
user2.setLastName("Mukherjee");
user2.setUserName("nmukh");
session.save(user2);
user3.setFirstName("Molly");
user3.setLastName("Banerjee");
user3.setUserName("mollyb");
session.save(user3);
final OrderDetail order1 = new OrderDetail();
final OrderDetail order2 = new OrderDetail();
final OrderDetail order3 = new OrderDetail();
final OrderDetail order4 = new OrderDetail();
final OrderDetail order5 = new OrderDetail();
order1.setOrderDesc("First Order");
order1.setOrderDate(new Date(2014, 10, 12));
order1.setUser(user1);
order2.setOrderDesc("Second Order");
order2.setOrderDate(new Date(2016, 10, 25));
order2.setUser(user1);
order3.setOrderDesc("Third Order");
order3.setOrderDate(new Date(2015, 2, 17));
order3.setUser(user2);
order4.setOrderDesc("Fourth Order");
order4.setOrderDate(new Date(2014, 10, 1));
order4.setUser(user2);
order5.setOrderDesc("Fifth Order");
order5.setOrderDate(new Date(2014, 9, 11));
order5.setUser(user3);
session.saveOrUpdate(order1);
session.saveOrUpdate(order2);
session.saveOrUpdate(order3);
session.saveOrUpdate(order4);
session.saveOrUpdate(order5);
// session.saveOrUpdate(user1);
tx.commit();
session.close();
}
}

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spring-hibernate4/src/main/resources/criteria.cfg.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">iamtheking</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="show_sql">true</property>
<mapping resource="com/baeldung/hibernate/criteria/model/Item.hbm.xml" />
</session-factory>
</hibernate-configuration>

7
spring-hibernate4/src/main/resources/criteria_create_queries.sql Normal file
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CREATE TABLE `item` (
`ITEM_ID` int(11) NOT NULL AUTO_INCREMENT,
`ITEM_DESC` varchar(100) DEFAULT NULL,
`ITEM_PRICE` int(11) NOT NULL,
`ITEM_NAME` varchar(255) NOT NULL,
PRIMARY KEY (`ITEM_ID`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=latin1;

16
spring-hibernate4/src/main/resources/fetching.cfg.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">iamtheking</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<mapping resource="com/baeldung/hibernate/fetching/model/User.hbm.xml" />
<mapping resource="com/baeldung/hibernate/fetching/model/OrderDetail.hbm.xml" />
</session-factory>
</hibernate-configuration>

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spring-hibernate4/src/main/resources/fetchingLazy.cfg.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">iamtheking</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<mapping resource="com/baeldung/hibernate/fetching/model/OrderDetail.hbm.xml" />
<mapping resource="com/baeldung/hibernate/fetching/model/UserLazy.hbm.xml" />
</session-factory>
</hibernate-configuration>

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spring-hibernate4/src/main/resources/fetching_create_queries.sql Normal file
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CREATE TABLE `user` (
`user_id` int(10) NOT NULL AUTO_INCREMENT,
`USERNAME` varchar(100) DEFAULT NULL,
`FIRST_NAME` varchar(255) NOT NULL,
`LAST_NAME` varchar(255) NOT NULL,
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=latin1 ;
CREATE TABLE `user_order` (
`ORDER_ID` int(10) NOT NULL AUTO_INCREMENT,
`ORDER_DATE` date DEFAULT NULL,
`USER_ID` int(10) NOT NULL DEFAULT '0',
`ORDER_DESC` varchar(1024) DEFAULT NULL,
PRIMARY KEY (`ORDER_ID`,`USER_ID`),
KEY `USER_ID` (`USER_ID`),
CONSTRAINT `user_order_ibfk_1` FOREIGN KEY (`USER_ID`) REFERENCES `USER` (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1;

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spring-hibernate4/src/main/resources/insert_statements.sql Normal file
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insert into item (item_id, item_name, item_desc, item_price)
values(1,'item One', 'test 1', 35.12);
insert into item (item_id, item_name, item_desc, item_price)
values(2,'Pogo stick', 'Pogo stick', 466.12);
insert into item (item_id, item_name, item_desc, item_price)
values(3,'Raft', 'Raft', 345.12);
insert into item (item_id, item_name, item_desc, item_price)
values(4,'Skate Board', 'Skating', 135.71);
insert into item (item_id, item_name, item_desc, item_price)
values(5,'Umbrella', 'Umbrella for Rain', 619.25);
insert into item (item_id, item_name, item_desc, item_price)
values(6,'Glue', 'Glue for home', 432.73);
insert into item (item_id, item_name, item_desc, item_price)
values(7,'Paint', 'Paint for Room', 1311.40);
insert into item (item_id, item_name, item_desc, item_price)
values(8,'Red paint', 'Red paint for room', 1135.71);
insert into item (item_id, item_name, item_desc, item_price)
values(9,'Household Chairs', 'Chairs for house', 25.71);
insert into item (item_id, item_name, item_desc, item_price)
values(10,'Office Chairs', 'Chairs for office', 395.98);
insert into item (item_id, item_name, item_desc, item_price)
values(11,'Outdoor Chairs', 'Chairs for outdoor activities', 1234.36);

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spring-hibernate4/src/test/java/com/baeldung/hibernate/criteria/HibernateCriteriaTest.java Normal file
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package com.baeldung.hibernate.criteria;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertTrue;
import java.util.List;
import org.hibernate.Session;
import org.junit.Test;
import com.baeldung.hibernate.criteria.model.Item;
import com.baeldung.hibernate.criteria.util.HibernateUtil;
import com.baeldung.hibernate.criteria.view.ApplicationView;
public class HibernateCriteriaTest {
final private ApplicationView av = new ApplicationView();
@Test
public void testPerformanceOfCriteria() {
assertTrue(av.checkIfCriteriaTimeLower());
}
@Test
public void testLikeCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedLikeList = session.createQuery("From Item where itemName like '%chair%'").list();
final String expectedLikeItems[] = new String[expectedLikeList.size()];
for (int i = 0; i < expectedLikeList.size(); i++) {
expectedLikeItems[i] = expectedLikeList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedLikeItems, av.likeCriteria());
}
@Test
public void testILikeCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedChairCaseList = session.createQuery("From Item where itemName like '%Chair%'").list();
final String expectedChairCaseItems[] = new String[expectedChairCaseList.size()];
for (int i = 0; i < expectedChairCaseList.size(); i++) {
expectedChairCaseItems[i] = expectedChairCaseList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedChairCaseItems, av.likeCaseCriteria());
}
@Test
public void testNullCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedIsNullDescItemsList = session.createQuery("From Item where itemDescription is null")
.list();
final String expectedIsNullDescItems[] = new String[expectedIsNullDescItemsList.size()];
for (int i = 0; i < expectedIsNullDescItemsList.size(); i++) {
expectedIsNullDescItems[i] = expectedIsNullDescItemsList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedIsNullDescItems, av.nullCriteria());
}
@Test
public void testIsNotNullCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedIsNotNullDescItemsList = session
.createQuery("From Item where itemDescription is not null").list();
final String expectedIsNotNullDescItems[] = new String[expectedIsNotNullDescItemsList.size()];
for (int i = 0; i < expectedIsNotNullDescItemsList.size(); i++) {
expectedIsNotNullDescItems[i] = expectedIsNotNullDescItemsList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedIsNotNullDescItems, av.notNullCriteria());
}
@Test
public void testAverageProjection() {
final Session session = HibernateUtil.getHibernateSession();
final List<Double> expectedAvgProjItemsList = session.createQuery("Select avg(itemPrice) from Item item")
.list();
final Double expectedAvgProjItems[] = new Double[expectedAvgProjItemsList.size()];
for (int i = 0; i < expectedAvgProjItemsList.size(); i++) {
expectedAvgProjItems[i] = expectedAvgProjItemsList.get(i);
}
session.close();
assertArrayEquals(expectedAvgProjItems, av.projectionAverage());
}
@Test
public void testRowCountProjection() {
final Session session = HibernateUtil.getHibernateSession();
final List<Long> expectedCountProjItemsList = session.createQuery("Select count(*) from Item").list();
final Long expectedCountProjItems[] = new Long[expectedCountProjItemsList.size()];
for (int i = 0; i < expectedCountProjItemsList.size(); i++) {
expectedCountProjItems[i] = expectedCountProjItemsList.get(i);
}
session.close();
assertArrayEquals(expectedCountProjItems, av.projectionRowCount());
}
@Test
public void testOrCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedOrCritItemsList = session
.createQuery("From Item where itemPrice>1000 or itemName like 'Chair%'").list();
final String expectedOrCritItems[] = new String[expectedOrCritItemsList.size()];
for (int i = 0; i < expectedOrCritItemsList.size(); i++) {
expectedOrCritItems[i] = expectedOrCritItemsList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedOrCritItems, av.orLogicalCriteria());
}
@Test
public void testAndCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedAndCritItemsList = session
.createQuery("From Item where itemPrice>1000 and itemName like 'Chair%'").list();
final String expectedAndCritItems[] = new String[expectedAndCritItemsList.size()];
for (int i = 0; i < expectedAndCritItemsList.size(); i++) {
expectedAndCritItems[i] = expectedAndCritItemsList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedAndCritItems, av.andLogicalCriteria());
}
@Test
public void testMultiCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedMultiCritItemsList = session
.createQuery("From Item where itemDescription is null and itemName like'chair%'").list();
final String expectedMultiCritItems[] = new String[expectedMultiCritItemsList.size()];
for (int i = 0; i < expectedMultiCritItemsList.size(); i++) {
expectedMultiCritItems[i] = expectedMultiCritItemsList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedMultiCritItems, av.twoCriteria());
}
@Test
public void testSortCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedSortCritItemsList = session
.createQuery("From Item order by itemName asc, itemPrice desc").list();
final String expectedSortCritItems[] = new String[expectedSortCritItemsList.size()];
for (int i = 0; i < expectedSortCritItemsList.size(); i++) {
expectedSortCritItems[i] = expectedSortCritItemsList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedSortCritItems, av.sortingCriteria());
}
@Test
public void testGreaterThanCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedGreaterThanList = session.createQuery("From Item where itemPrice>1000").list();
final String expectedGreaterThanItems[] = new String[expectedGreaterThanList.size()];
for (int i = 0; i < expectedGreaterThanList.size(); i++) {
expectedGreaterThanItems[i] = expectedGreaterThanList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedGreaterThanItems, av.greaterThanCriteria());
}
@Test
public void testLessThanCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedLessList = session.createQuery("From Item where itemPrice<1000").list();
final String expectedLessThanItems[] = new String[expectedLessList.size()];
for (int i = 0; i < expectedLessList.size(); i++) {
expectedLessThanItems[i] = expectedLessList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedLessThanItems, av.lessThanCriteria());
}
@Test
public void betweenCriteriaQuery() {
final Session session = HibernateUtil.getHibernateSession();
final List<Item> expectedBetweenList = session.createQuery("From Item where itemPrice between 100 and 200")
.list();
final String expectedPriceBetweenItems[] = new String[expectedBetweenList.size()];
for (int i = 0; i < expectedBetweenList.size(); i++) {
expectedPriceBetweenItems[i] = expectedBetweenList.get(i).getItemName();
}
session.close();
assertArrayEquals(expectedPriceBetweenItems, av.betweenCriteria());
}
}

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spring-hibernate4/src/test/java/com/baeldung/hibernate/criteria/HibernateCriteriaTestRunner.java Normal file
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package com.baeldung.hibernate.criteria;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
public class HibernateCriteriaTestRunner {
public static void main(final String[] args) {
Result result = JUnitCore.runClasses(HibernateCriteriaTestSuite.class);
for (Failure failure : result.getFailures()) {
}
}
}

11
spring-hibernate4/src/test/java/com/baeldung/hibernate/criteria/HibernateCriteriaTestSuite.java Normal file
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package com.baeldung.hibernate.criteria;
import org.junit.runner.RunWith;
import org.junit.runners.Suite;
@RunWith(Suite.class)
@Suite.SuiteClasses({ HibernateCriteriaTest.class })
public class HibernateCriteriaTestSuite {
}

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spring-hibernate4/src/test/java/com/baeldung/hibernate/fetching/HibernateFetchingTest.java Normal file
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package com.baeldung.hibernate.fetching;
import static org.junit.Assert.*;
import org.junit.Test;
import com.baeldung.hibernate.fetching.view.FetchingAppView;
public class HibernateFetchingTest {
@Test
public void testLazyFetching() {
FetchingAppView fav = new FetchingAppView();
fav.createTestData();
assertFalse(fav.lazyLoaded());
}
@Test
public void testEagerFetching() {
FetchingAppView fav = new FetchingAppView();
assertTrue(fav.eagerLoaded());
}
}

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spring-hibernate4/src/test/java/com/baeldung/hibernate/fetching/HibernateFetchingTestRunner.java Normal file
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package com.baeldung.hibernate.fetching;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
public class HibernateFetchingTestRunner {
public static void main(final String[] args) {
Result result = JUnitCore.runClasses(HibernateFetchingTestSuite.class);
for (Failure failure : result.getFailures()) {
}
}
}

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spring-hibernate4/src/test/java/com/baeldung/hibernate/fetching/HibernateFetchingTestSuite.java Normal file
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package com.baeldung.hibernate.fetching;
import org.junit.runner.RunWith;
import org.junit.runners.Suite;
@RunWith(Suite.class)
@Suite.SuiteClasses({ HibernateFetchingTest.class })
public class HibernateFetchingTestSuite {
}

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spring-hibernate4/src/test/java/criteria.cfg.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">iamtheking</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="show_sql">true</property>
<mapping resource="com/baeldung/hibernate/criteria/model/Item.hbm.xml" />
</session-factory>
</hibernate-configuration>

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spring-hibernate4/src/test/java/hibernate.cfg.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/HIBERTEST2_TEST</property>
<property name="connection.username">root</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.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
</session-factory>
</hibernate-configuration>