Spring & Hibernate

Spring & Hibernate
Reporter：Jiayun Zhou
Date ：2011/05/16

Outline
Hibernate
Spring
RIS3 AW Sample
Spring Hibernate Integration
Spring Security
Conclusion
Copyright by IISI. All rights reserved 2

ORM
Object/Relational Mapping

Java
Object-oriented Programming
Language

Relational Database

Why Mappings?

JDBC

Hibernate

Mapping Declaration
• Using Java 5 annotations (via JPA 2 annotations)
• Using JPA 2 XML deployment descriptors
• Using the Hibernate legacy XML files approach
known as hbm.xml

Mapping Declaration - table

Mapping Declaration - class
@Entity
@Table(name = "bulletin")
public class Bulletin implements
Serializable {

Mapping Declaration - PK
private Long id;
@Id
@GeneratedValue
@Column(name = "id")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}

Mapping Declaration - field
/** 標題 */
private String title;
@Column(name = "title")
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}

@Transient
@Transient
public String getDefultDate() {
SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd");
String defApplyDate = df.format(new Date());
return (Integer.parseInt(defApplyDate.substring(0, 4)) - 1911) + "/"
+ defApplyDate.substring(5, 7) + "/"
+ defApplyDate.substring(8, 10);
}

Working with Object - save
DomesticCat fritz = new DomesticCat();
fritz.setColor(Color.GINGER);
fritz.setSex('M');
fritz.setName("Fritz");
Long generatedId = (Long) sess.save(fritz);

Working with Object - load
Cat fritz = (Cat) sess.load(Cat.class, generatedId);

Working with Object - update
// in the first session
Cat cat = (Cat) firstSession.load(Cat.class, catID);
// in a higher tier of the application
Cat mate = new Cat();
cat.setMate(mate);
// later, in a new session
secondSession.saveOrUpdate(cat);
secondSession.saveOrUpdate(mate);

Working with Object - delete
sess.delete(cat);

3 Query Way
• Criteria
• HQL
• Native SQL

Criteria
List cats = sess.createCriteria(Cat.class)
.add( Restrictions.like("name", "Fritz%") )
.add( Restrictions.or(
Restrictions.eq( "age", new Integer(0) ),
Restrictions.isNull("age")
) )
.list();

Criteria - QBE
Cat cat = new Cat();
cat.setSex('F');
cat.setColor(Color.BLACK);
List results = session.createCriteria(Cat.class)
.add( Example.create(cat) )
.list();

HQL
Query q = s.createQuery("from foo Foo as foo
where foo.name=:name and foo.size=:size");
q.setProperties(fooBean); // fooBean has getName()
and getSize()
List foos = q.list();

HQL - join
from Cat as cat
left join cat.kittens as kitten
with kitten.bodyWeight > 10.0

Native SQL
sess.createSQLQuery("SELECT * FROM CATS").list();
sess.createSQLQuery("SELECT ID, NAME,
BIRTHDATE FROM CATS").list();

Spring Modules
• Inversion of Control container
• Aspect-oriented programming
• Data access
• Transaction management
• Model-view-controller
• Remote Access framework
• Convention-over-configuration
• Batch processing
• Authentication and authorization
• Remote Management
• Messaging
• Testing

IoC
Inversion of Control

IoC
Inversion of Control Flow

Martin Fowler

Command Line
#ruby
puts 'What is your name?'
name = gets
process_name(name)
puts 'What is your quest?'
quest = gets
process_quest(quest)

GUI
require 'tk'
root = TkRoot.new()
name_label = TkLabel.new() {text "What is Your Name?"}
name_label.pack
name = TkEntry.new(root).pack
name.bind("FocusOut") {process_name(name)}
quest_label = TkLabel.new() {text "What is Your Quest?"}
quest_label.pack
quest = TkEntry.new(root).pack
quest.bind("FocusOut") {process_quest(quest)}
Tk.mainloop()

Hollywood Principle
Don’t call us, we’ll call you.

Ex. HttpSessionListener
• sessionCreated()
• sessionDestroyed()

Ex. Template Method Pattern

Dependency Injection
One Form of IoC

class MovieLister...
public Movie[] moviesDirectedBy(String arg) {
List allMovies = finder.findAll();
for (Iterator it = allMovies.iterator(); it.hasNext();) {
Movie movie = (Movie) it.next();
if (!movie.getDirector().equals(arg)) it.remove();
}
return (Movie[]) allMovies.toArray(new
Movie[allMovies.size()]);
}

public interface MovieFinder {
List findAll();
}

private MovieFinder finder;
public MovieLister() {
finder = new
ColonDelimitedMovieFinder("movies1.txt");
}

Spring Stereotype
• @Component
• @Repository
• @Service
• @Controller

@Repository
class ColonMovieFinder...
public void setFilename(String filename) {
this.filename = filename;
}

Spring @Autowired
private MovieFinder finder;
@Autowired
public void setFinder(MovieFinder finder) {
this.finder = finder;
}

Configuration
<jee:jndi-lookup id="dataSource" jndi-name="jdbc/dbaw" />
<tx:annotation-driven />
<tx:jta-transaction-manager />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationS
essionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan"
value="com.iisigroup.ris.aw.domain" />
<property name="hibernateProperties">
<props>
<prop
key="hibernate.dialect">org.hibernate.dialect.InformixDialect</prop>
</props>
</property>
</bean>

Transaction Management
@Override
@Transactional(readOnly = true)
public List<Bulletin> findAll() {
return bulletinDAO.findAll();
}
@Override
@Transactional
public void save(Bulletin bulletin) {
bulletinDAO.save(bulletin);
}

Authentication Integration
• HTTP BASIC authentication headers
• HTTP Digest authentication headers
• HTTP X.509 client certificate exchange
• LDAP
• Form-based authentication
• OpenID authentication
• Authentication based on pre-established
request headers
• JA-SIG Central Authentication Service

Authentication Integration –
cont.
• Transparent authentication context propagation
for Remote Method Invocation (RMI) and
HttpInvoker (a Spring remoting protocol)
• Automatic "remember-me" authentication
• Anonymous authentication
• Run-as authentication
• Java Authentication and Authorization Service
(JAAS)
• JEE container autentication
• Kerberos

Configuration
<http use-expressions="true" auto-config="true">
<intercept-url pattern="/login.jsp*" access="isAnonymous()" />
<intercept-url pattern="/**" access="isAuthenticated()" />
<form-login login-page="/login.jsp" default-target-url="/faces/index.xhtml"
always-use-default-target="true" />
</http>
<authentication-manager>
<authentication-provider>
<user-service>
<user name="jimi" password="jimi" authorities="admin, System" />
<user name="bob" password="bob" authorities="System" />
</user-service>
</authentication-provider>
</authentication-manager>

• Entity
• DAO, DAOImpl
• Service, ServiceImpl
• Managed Bean, XHTML

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Spring & Hibernate

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