Slim3 Gwt In Action

Slim3 + GWT in Action
Go Tanaka

Thursday, April 8, 2010

Introduction


- -

http://d.hatena.ne.jp/nowokay/20100305


http://www.ipa.go.jp/about/research/2009cloud/pdf/100324_cloud.pdf


Google App Engine?


Google App Engine?

API
API
URL API

API

Memcache API


GWT?


GWT?

http://www.youtube.com/watch?v=uExEw3OVMd0

GWT?

Button b = new Button("Click me", new ClickHandler() {
public void onClick(ClickEvent event) {
GWT.runAsync(new RunAsyncCallback() {
public void onFailure(Throwable caught) {
Window.alert("Code download failed");
}
public void onSuccess() {
Window.alert("Hello, AJAX");
}
});
}
});


GWT?
http://code.google.com/p/google-web-toolkit-incubator/


Slim3

Spin Up

HOT reloading

JDO, JPA

Global Transaction


Slim3

HOT reloading

Slim3 Controller

Validation

Global Transaction

Slim3 DataStore

Slim3 JSP

Slim3


HOT reloading


HOT reloading

ClassCastException IllegalAccessException


HOT reloading

HOT reloading

Slim3 CoolBridge


HOT reloading

Bootstrap
• Bootstrap classes of your JVM
System • System class loader classses
• /WEB-INF/classes of your web application
Common • /WEB-INF/lib/*.jar of your web application
• $CATALINA_HOME/lib
Application • $CATALINA_HOME/lib/*.jar

Tomcat6
http://tomcat.apache.org/tomcat-6.0-doc/class-loader-howto.html


HOT reloading

Bootstrap HotReloadingClassLoader
→Request
System ※Cool

Common

Request
Application
HotReloadingClassLoader

Request


HOT reloading

Static
Bootstrap
Web
HOT reloading
System
HOT reloading
Common COOL
cool

Application


※


HOT reloading

Bootstrap COOL HOT reloading
ClassCastException
System
Web Application
Common HotReloadingClassLoader

Application
COOL HOT reloading
CoolBridge


HOT reloading

cool Interface

Interface HOT reloading

“.cool”

CoolBridge


HOT reloading

COOL interface HOT reloadable implementation class
package root.cool.service; package root.service;

public interface EeeService { import root.cool.service.EeeService;
   void foo();
} public class EeeServiceImpl implements
EeeService {
    public void foo() {
        Bbb bbb = new Bbb();
        ...
    }
}

EeeService service = CoolBridge.create(EeeService.class);
service.foo();

http://sites.google.com/site/slim3documentja/documents/hot-reloading


HOT reloading

HOT reloading

ClassCastException IllegalAccessException

CoolBridge


*.gwt.xml
entry-point

Service
Slim3 Validation
Slim3 DataStore


Web Application Project

Slim3 Google Code (http://
code.google.com/p/slim3) Slim3-blank-
x.x.x.zip

Zip

Java Build Path, Factory Path, web.xml


Factory Path Meta

http://sites.google.com/site/slim3documentja/getting-started/getting-blank-project


GWTServiceServlet

<servlet>
<servlet-name>GWTServiceServlet</servlet-name>
<servlet-class>org.slim3.gwt.server.rpc.GWTServiceServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>GWTServiceServlet</servlet-name>
<url-pattern>*.s3gwt</url-pattern>
</servlet-mapping>


<inherits name='org.slim3.gwt.emul.S3Emulation' />

※ S3Emulation client Key


Service


Service

build.xml Run As ... -> Ant build
Target gen-gwt-service


Service

GWT

GWT

S3Emulation inherit source-
path


Service

Enum name


Service

IsSerializable Serializable

ﬁnal, transient

GWT1.5

GWT2.0


Slim3 Validation

ByteTypeValidator, DateTypeValidator, DoubleTypeValidator, FloatTypeValidator,
IntegerTypeValidator, LongTypeValidator, NumberTypeValidator, ShortTypeValidator

DoubleRangeValidator, LongRangeValidator

MaxlengthValidator, MinlengthValidator, RegexpValidator, RequiredValidator


Slim3 Validation

Controller
Validators v = new validators(request);
v.add(“arg1”, v.required(), v.maxlength(200));
if(v.validate()){
// OK
}

Service
Map<String, Object> params = // Dto Map Object
// Service Errors
params.put(ControllerConstants.ERRORS_KEY, new Errors());
v.add(“arg1”, v.required(), v.maxlength(200));
if(v.validate()){
// OK
}


Slim3 Validation

AbstractValidator

getMessageKey()

validate()

Validators


Slim3 Validation

AbstractValidator

import org.slim3.controller.validator.AbstractValidator;

public class BooleanValidator extends AbstractValidator {

}


Slim3 Validation

getMessageKey()

Validation
※ Constructor
application(_locale).properties ( )

@Override
protected String getMessageKey() {
return "validator.xxxxx";
}


Slim3 Validation

validate()
String null

public String validate(Map<String, Object> parameters, String name) {
if(// ){
if (message != null) {
return message;
}
return ApplicationMessage.get(getMessageKey(), getLabel(name));
}
return null;
}


Slim3 Validation

getMessageKey()

validator.required={0} is required.

validator.xxxxx={0} is xxxxx.

label.arg1=ARG_1


Slim3 Validation

Validators

public BooleanValidator condition(boolean condition){
return new BooleanValidator(condition);
}


Slim3 DataStore

DataStore.put()

DataStore
DataStore GAE


Slim3 DataStore


Slim3 DataStore

Google App Engine Transaction
Slim3 Global Transaction

Transaction Entity Group Transaction
Slim3 Global Transaction

※ Entity Group Transaction Global Transaction


GWT Java

HTML5

GAE/J Slim3

DataStore


Slim3 Gwt In Action

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