1. mustafa daşgın mdasgin.blogspot.com mustafa.dasgin@prime.com.tr Spring

2. Expert One-on-One J2EE Design and Development (Rod Johnson) Sıradan Java sınıflarına yetenekler kazandırır. Transactions, Monitoring, Concurrency, Remoting Bağımlılık aktarımını üstlenir Modüler yapılı Core Veri erişimi/entegrasyonu Web AOP Test Spring’e Giriş

3. Spring Modülleri

4. Konfigürasyona göre “bean” yaratıp yönetimini üstlenir XML tabanlı Notlandırma (Annotation) tabanlı Java tabanlı org.springframework.context.ApplicationContext ClassPathXmlApplicationContext FileSystemXmlApplicationContext XmlWebApplicationContext AnnotationConfigApplicationContext AnnotationConfigWebApplicationContext IoC Container

5. IoC Container (Devam)

6. XML Tabanlı Konfigürasyon <beans xmlns=“...> <bean id=“userService" class=“com.prime.UserServiceImpl"> <property name=“userDao" ref=“userDao"/> <!– diger ek tanımlamalar --> </bean> <bean id=“userDao" class=“com.prime.UserDaoImpl"> <!– diger ek tanımlamalar --> </bean> </beans

7. Notlandırma Tabanlı Konfig. <beans xmlns=“...> <context:component-scan base-package="org.example"/> </beans> @Service //@Component @Scope("prototype") publicclassSimpleMovieLister { @Autowired//@Resource privateMovieFindermovieFinder; publicSimpleMovieLister(MovieFindermovieFinder) { this.movieFinder= movieFinder; } } @Repository //@Component publicclassJpaMovieFinderimplementsMovieFinder { // implementation elided for clarity }

8. AnnotationConfigWebApplicationContext CGLIB jar gerekli Java Tabanlı Konfigürasyon @Configuration publicclassAppConfig{ @Bean(name = "myFoo",initMethod= "init") @Scope("prototype") publicFoofoo() { returnnewFoo(bar()); } @Bean publicBar bar() { return newBar(); } }

9. IoC Container tarafından yaratılıp, bağımlılıkları ve yaşam döngüsü yönetilen basit Java nesneleri (POJO) Tanımlanırken; Sınıfı id ve/veya ismi Scope değeri Bağımlılıkları Yaşam döngüsü metotları belirtilebilir. Container 3 farklı yöntemle beanleri yaratır: Sınıfın yapıcısı (constructor) static factory metot instance factory metot Bean Nedir?

10. Yapıcı ile Static Factory metot ile Bean Yaratma Yöntemleri <bean id="exampleBean" class="examples.ExampleBean"/> <bean id="clientService" class="examples.ClientFactoryService“ factory-method="createClient"/> publicclassClientFactoryService { publicstaticClientServicecreateClient() { new ClientService(); } }

11. Instance Factory metot ile Bean Yaratma Yöntemleri (Devam) <bean id="serviceLocator" class="examples.DefaultServiceLocator“/> <bean id="clientService“ factory-bean="serviceLocator“ factory-method="createClientServiceInstance"/> publicclassDefaultServiceLocator { publicClientServicecreateClientServiceInstance() { returnnew ClientService(); } }

12. Bean Scopeları <web-app> ... <listener> <listener-class> org.springframework.web.context.request.RequestContextListener</listener-class> </listener> ... </web-app>

13. Singleton Scope

14. Prototype Scope

15. org.springframework.beans.factory.InitializingBean org.springframework.beans.factory.DisposableBean Bean Yaşam Döngüsü <bean id="exampleBean" class="examples.ExampleBean"/> publicclassExampleBeanimplementsInitializingBean, DisposableBean{ publicvoidafterPropertiesSet() { // do some initialization work } publicvoid destroy() { // do some destruction work } }

16. init-method destroy-method Bean Yaşam Döngüsü (Devam) <bean id="exampleBean" class="examples.ExampleBean" init-method="init“ destroy-method=“cleanup”/> publicclassExampleBean { publicvoid init() { // do some initialization work } publicvoid cleanup() { // do some destruction work } }

17. @PostConstruct @PreDestroy Bean Yaşam Döngüsü (Devam) publicclassExampleBean { @PostConstruct publicvoidinit() { //... } @PreDestroy publicvoidcleanup() { //... } }

18. Yapıcı ile Aktarım Bağımlılık Aktarımı packagex.y; publicclassFoo { publicFoo(Bar bar, Bazbaz) { // ... } } <beans> <bean id="foo" class="x.y.Foo"> <constructor-arg ref="bar"/> <constructor-arg ref="baz"/> </bean> <bean id="bar" class="x.y.Bar"/> <bean id="baz" class="x.y.Baz"/> </beans>

19. Yapıcı ile Aktarım (Devam..) Bağımlılık Aktarımı (Devam) <bean id="exampleBean" class="examples.ExampleBean"> <constructor-arg index="0" value="7500000"/> <constructor-arg index="1" value="42"/> </bean> <bean id="exampleBean" class="examples.ExampleBean"> <constructor-arg name="years" value="7500000"/> <constructor-arg name="ultimateanswer" value="42"/> </bean>

20. Setter Metotları ile Aktarım Bağımlılık Aktarımı (Devam..) <bean id="exampleBean" class="examples.ExampleBean“> <property name="beanOne"> <ref bean="anotherExampleBean"/> </property> <property name="beanTwo" ref="yetAnotherBean"/> <property name="integerProperty" value="1"/> </bean> <bean id="anotherExampleBean" class="examples.AnotherBean"/> <bean id="yetAnotherBean" class="examples.YetAnotherBean"/>

21. Primitive Değerlerin Aktarımı packageexamples; publicclassExampleBean { privateintyears; String ultimateAnswer; publicExampleBean(int years, String ultimateAnswer) { this.years= years; this.ultimateAnswer= ultimateAnswer; } } <bean id="exampleBean" class="examples.ExampleBean"> <constructor-arg type="int" value="7500000"/> <constructor-arg type="java.lang.String" value="42"/> </bean>

22. Collection Yapıların Aktarımı <bean id="moreComplexObject" class="example.ComplexObject"> <!-- java.util.Properties --> <property name="adminEmails"> <props> <prop key="administrator">admin@expl.org</prop> <prop key="support">support@expl.org</prop> <prop key="dev">development@expl.org</prop> </props> </property> <!– java.util.List <property name="someList"> <list> <value>a list element</value> <ref bean="myDataSource" /> </list> </property>

23. Collection Yapılarının Akt. (Devam) <!-- java.util.Map <property name="someMap"> <map> <entry key="entry" value="just some string"/> <entry key ="a ref" value-ref="myDataSource"/> </map> </property> <!-- java.util.Set --> <property name="someSet"> <set> <value>just some string</value> <ref bean="myDataSource" /> </set> </property> </bean>

24. Null ve Boş String Aktarımı <!-- Boş String --> <bean class="ExampleBean"> <property name="email" value=""/> </bean> <!-- Null --> <bean class="ExampleBean"> <property name="email"><null/></property> </bean>

25. Modları: byName byType constructor Primitive tipler için kullanılamaz Aynı tip değerinde birden fazla aday bean varsa hata oluşur. Autowire <bean id=“userService” class=“services.UserService” autowire=“byName”/>

26. web.xml JSF ile Entegrasyon <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> ... <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param>

27. faces-config.xml ApplicationContext erişimi: JSF ile Entegrasyon (Devam) <faces-config> <application> <el-resolver> org.springframework.web.jsf.el.SpringBeanFacesELResolver </el-resolver> ... </application> </faces-config> ApplicationContextctx = FacesContextUtils.getWebApplicationContext( FacesContext.getCurrentInstance());

28. Farklı transaction APIleri (JTA, JDBC, Hibernate, JPA) üzerine ortak bir model sunar. Transaction gerçekleştirimi değişse bile kodta değişiklik yapmaya gerek yok. Programlama veya tanımlama ile transaction tanımları yapılabilir. Basit API Spring Transaction Desteği

29. JDBC – DataSourceTransactionManager JTA – JtaTransactionManager Hibernate – HibernateTransactionManager JPA - JpaTransactionManager PlatformTransactionManager <bean id=“txManager" class="org.springframework.orm.jpa.JpaTransactionManager“ <property name=“entityManagerFactory” ref="entityManagerFactory"/> </bean> <bean id=“entityManagerFactory“ class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name=“dataSource” ref=“dataSource”/> ... </bean>

30. XML ile Transaction Tanımlama <aop:config> <aop:pointcut id="serviceOperation“ expression="execution(* x.y.service..*Service.*(..))"/> <aop:advisorpointcut-ref="serviceOperation“ advice-ref="txAdvice"/> </aop:config> <bean id="fooService" class="x.y.service.DefaultFooService"/> <bean id="anotherService" class="org.xyz.SomeService"/> <tx:advice id="txAdvice“transaction-manager="txManager" > <tx:attributes> <tx:method name="get*" read-only="true"/> <tx:method name="*"/> </tx:attributes>

31. Notlandırma ile Transaction Tanım. @Transactional(readOnly = true) publicclassDefaultFooServiceimplementsFooService{ publicFoogetFoo(String fooName) { // do something } @Transactional(readOnly = false, propagation = Propagation.REQUIRES_NEW) publicvoidupdateFoo(Foofoo) { // do something } } <bean id="fooService" class="x.y.service.DefaultFooService"/> <tx:annotation-driven transaction-manager="txManager"/>

32. LocalEntityManagerFactoryBean EntityManagerFactory’i JNDI’dan elde etme LocalContainerEntityManagerFactoryBean JPA Desteği

33. JPA Desteği (Devam) <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="persistenceUnitName" value="simpleJpa"/> <property name="jpaVendorAdapter"> <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="showSql" value="true"/> <property name="generateDdl" value="true"/> <property name="database" value="HSQL"/> </bean> </property> </bean>

34. Spring Reference Documantation http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/ Kaynak