1. T2Framework
T2
@tan_go238
2010/11/27 (s at) @k ro n os

2. About myself
@tan_go238
T2
t2-samples
T2

3. What is T2?
id:shot6 Web

4. What is T2?
http://domain/app/foo/bar
@Page(“/foo”)
public class FooPage {
@GET
@ActionPath(“/bar”)
public Navigation bar(WebContext context){
return Forward.to(“/index.jsp”);
}
}

5. Why read the source code of T2?
T2
FW
AMF

6. Internal Processing
T2Filter

7. ContainerAdaptor
T2
org.t2framework.t2.adapter.Seasar2Adapter
org.t2framework.t2.adapter.SpringAdapter
org.t2framework.t2.adapter.GuiceAdapter
org.t2framework.t2.adapter.LucyContainerAdapter
AbstractContainerAdapter

8. GlobalExceptionHandler
WebConfiguration ContainerAdapter
GlobalExceptionHandler implements
handlerException

9. ResolverCreator
ParameterResolver
ActionAnnotationResolver
AnnotationResolverCreator
implements
ViewDevelopmentAnnotationResolverCreatorImpl
...

10. WebApplication
ContainerAdapter, rootPackage, eagerload,
AnnotationResolverCreator
Context Page

11. PluginProcessor
Page Plugin
Plugin AbstractPlugin

12. Summary

13. T2Framework
Web
@tan_go238
2010/11/27 (s at) @k ro n os

14. Multi-threading
Agenda
synchronized
PluginProcessorImpl Lock object
WebApplicationImpl pageDescMap classCache

15. Multi-threading

16. Multi-threading

17. Multi-threading
public UnsafeValue {
private int max;
public void update(int value){
if(max < value)
max = value;
}
public int get(){
return max;
}
}
http://blogs.sun.com/javaev/entry/ java _2_ _

18. Multi-threading

19. Multi-threading
Java
public class UnsafeValue {
private int max;
...
}

20. Multi-threading
1
public UnsafeValue {
private int max;
public synchronized void update(int value){
if(max < value)
max = value;
}
public synchronized int get(){
return max;
}
}

21. Multi-threading
2
public UnsafeValue {
private volatile int max;
public synchronized void update(int value){
if(max < value)
max = value;
}
public int get(){
return max;
}
}

22. Multi-threading
public UnsafeValue {
private AtomicInteger max;
public void update(int value){
do{
int old = max.get();
if(old >= value) break;
} while(!max.compareAndSet(old, value));
}
public int get(){
return max.get();
}
}
false

23. Multi-threading

24. Thread Safe?
T2 Page

25. Thread Safe

26. Summery

27. Reading 1
synchronized
PluginProcessorImpl Lock object
WebApplicationImpl pageDescMap classCache

28. Reading 2
WebApplicationImpl pageDescMap classCache

29. Referrence
Web
http://download.oracle.com/javase/tutorial/essential/concurrency/newlocks.html
http://blogs.sun.com/javaev/entry/ java _2_ _
http://www.ibm.com/developerworks/jp/java/library/j-jtp08223/index.html
http://www.stackasterisk.jp/tech/java/sjcp05_03.jsp
Java