1. Enterprise Guice
Robbie Vanbrabant

2. Dependency
Art by Jesse Wilson

3. Pure Java™

4. interface Hero {
}
class Batman implements Hero {
}
class GothamCity {
GothamCity(Hero hero) {
...
}
}

5. class GothamCity {
@Inject GothamCity(Hero hero) {
...
}
}
class HeroModule implements Module {
public void configure(Binder binder) {
binder.bind(Hero.class).to(Batman.class);
}
}

8. Enterprise Guice

9. 2.0
Guice
2.0
Warp Persist
Google GIN

10. Art by Jesse Wilson

11. Basics

12. AOP
for
Mere Mortals

13. Guice Servlet

14. Java Virtual Machine
Web Container
Servlet
Filter pipeline
HTTP Request
HTTP Request Servlet
HTTP Request
Servlet

15. Java Virtual Machine
Web Container
Servlet
HTTP Request GuiceFilter Filter pipeline
HTTP Request Servlet
HTTP Request
Servlet

16. 2.0
AssistedInject

17. Private Modules

18. Modules.override(
new ProductionModule(),
new TestModule()
);

19. Grapher

22. Code {}
vs
<XML/>

24. Properties
database.url = jdbc:mysql://localhost/test
database.driver = com.mysql.jdbc.Driver
database.user = test
database.password = test

25. class PropertiesModule extends AbstractModule {
protected void configure() {
Names.bindProperties(binder(),
load(“database.properties”));
}
}
class UsesDatabase {
@Inject @Named(“database.host”)
private String host;
}

26. But I Want <XML/>

27. Compile-time Smiling
class AppModule extends AbstractModule {
protected void configure() {
install(new DataModule());
install(new WebModule());
}
}
<beans>
<import resource=“data-context.xml”/>
<import resource=“web-context.xml”/>
</beans>

28. @Annotations
and
Tight Coupling

29. Summary

30. Guice 1.0 March 2007
Guice 2.0 Any minute

33. Hibernate
JPA
DB4O
Neodatis

34. @Transactional
Dynamic Finders

35. Unit of Work
Session / Transaction
Session / Request

36. class PersistenceModule extends ServletModule {
protected void configureServlets() {
install(PersistenceService.usingHibernate()
.across(UnitOfWork.REQUEST)
.buildModule());
bind(Configuration.class).toInstance(
new AnnotationConfiguration()
.addAnnotatedClass(Product.class)
.setProperties(load(quot;hibernate.propertiesquot;))
);
filter(“/*”).through(PersistenceFilter.class);
}
}
Guice.createInjector(new PersistenceModule());

37. # configure hibernate to use the HSQL in-memory database
hibernate.connection.driver_class=org.hsqldb.jdbcDriver
hibernate.connection.url=jdbc:hsqldb:mem
hibernate.connection.username=sa
hibernate.connection.password=
hibernate.connection.pool_size=1
hibernate.dialect=org.hibernate.dialect.HSQLDialect
# creates tables for us automatically
hibernate.hbm2ddl.auto=create
# let Warp Persist apply the open-session-in-view pattern
hibernate.current_session_context_class=managed
# don’t use 2nd level caching
hibernate.cache.provider_class=org.hibernate.cache.NoCacheProvider

38. public class ProductManager {
@Inject Provider<Session> session;
@Transactional
public void create(Product p) {
session.get().save(p);
}
}

39. public interface ProductAccess {
@Transactional
@Finder(namedQuery=“all products”)
List<Product> listAll();
@Transactional
@Finder(query=“from Product where pn = :name”)
Product find(@Named(“name”) String name);
}

40. @Transactional(rollbackOn = IOException.class,
exceptOn = FileNotFoundException.class)
public class ProductService {
@Inject Provider<Session> session;
public void process(Product p) throws IOException {
session.get().save(p);
// do IO stuff
}
}

41. PersistenceService.usingHibernate()
.across(UnitOfWork.REQUEST)
.forAll(
annotatedWith(Transactional.class),
any())
.buildModule());

42. Multiple Modules

43. public class ProductManager {
@Inject @Product
Provider<Session> session;
@Transactional(unit=Product.class)
public void create(Product p) {
session.get().save(p);
}
}

44. class PersistenceModule extends ServletModule {
protected void configureServlets() {
HibernatePersistenceStrategy hibernate =
HibernatePersistenceStrategy.builder()
.annotatedWith(Product.class).build();
// Connect to the product database
PersistenceService.using(hibernate)
.across(UnitOfWork.TRANSACTION)
.buildModule();
bind(Configuration.class).annotatedWith(Product.class).toInstance(
new AnnotationConfiguration()
.addAnnotatedClass(Product.class)
.setProperties(load(quot;hibernate.propertiesquot;))
);
...
}
}

45. Google GIN

46. on the
Client

47. Google Web Toolkit

48. brings
Type Safety
to
Web Development

49. Miracles Happen
Java™ JavaScript
Miracle
Source Code HTML

50. “Bunny Heaven” by Mikko Eerola

51. No Bytecode
cglib

52. No Reflection
MyType.class
klazz.getAnnotation(...)
Class.forName(...)

53. GIN
is
Statically Compiled Guice

54. Code Generator

55. Zero
Overhead

56. Guice
http://code.google.com/p/google-guice
Warp
http://code.google.com/p/warp-persist
Google GIN
http://code.google.com/p/google-gin
Robbie
http://garbagecollected.org

57. Pray for Common Sense

58. Enterprise Guice