j2 ee vs. .net workshop

© Nguon Viet Software LLC | Slide 1 June, 2007

J2EE vs. .NETJ2EE vs. .NET

A Technical Workshop from A Technical Workshop from

NGUON VIET SOFTWARE LLCNGUON VIET SOFTWARE LLC


ObjectivesObjectives

To understand the Distributed SystemTo understand the Distributed System To understand the J2EE TechnologyTo understand the J2EE Technology To understand the .NET TechnologyTo understand the .NET Technology To know the difference between J2EE and .NETTo know the difference between J2EE and .NET


What is a Distributed System?What is a Distributed System?

A system made up of distinct sub-systems/ components that are A system made up of distinct sub-systems/ components that are distributed across multiple computers on a network.distributed across multiple computers on a network.

AvailabilityAvailability

Manageability Manageability

PerformancePerformance

ReliabilityReliability Scalability Scalability Securability Securability

Data

Databases

External Applications

Legacy Systems

Business Logic

Application Servers

Application Server

Rich Client

Presentation

Web Server

Web Server

Workstation

Workstation

Workstation

Workstation

Firewall

Firewall

Firewall

Firewall


J2EEJ2EEFrameworkFramework


J2EEJ2EE

The application server maintains controls and provides The application server maintains controls and provides services through an interface or framework known as a services through an interface or framework known as a containercontainer

There are five defined container types in the J2EE There are five defined container types in the J2EE specificationspecification Three of these are server-side containersThree of these are server-side containers The other two container types are client-sideThe other two container types are client-side

ContainersContainers


J2EEJ2EE

A servlet is a server-side component Written in Java Extends the capabilities of servers Accessed via request-response programming model

What can Servlet do? Share information Maintain in client state Filter requests and responses Control web flows

Usage Used to develop the presentation (A controller in web tier)

ServletServlet


J2EEJ2EEJSPJSP

A A JSP pageJSP page is a text document that contains two types of is a text document that contains two types of texttext Static data: HTML, SVG, WML, and XMLStatic data: HTML, SVG, WML, and XML JSP elements: Construct dynamic contentJSP elements: Construct dynamic content

What can JSP do?What can JSP do? Generate dynamic pages to interact with usersGenerate dynamic pages to interact with users Transfer control to another web componentTransfer control to another web component Access server-side objectsAccess server-side objects Support Tag LibrarySupport Tag Library

UsageUsage Used to develop the presentationUsed to develop the presentation


J2EEJ2EEEJBEJB

An An enterprise java bean enterprise java bean is a server-side component that can is a server-side component that can be deployed in a distributed multi-tier environment.be deployed in a distributed multi-tier environment.

Enterprise JavaBeans (EJBs)Enterprise JavaBeans (EJBs)

Session BeanSession Bean(SB)(SB)

Entity Bean Entity Bean (EB)(EB)

Message Driven Bean Message Driven Bean (MDB)(MDB)

StatelessStateless(SLSB)(SLSB)

StatefulStateful(SFSB)(SFSB)

Bean Managed Bean Managed PersistencePersistence

(BMP)(BMP)

Container ManagedContainer Managed PersistencePersistence

(CMP)(CMP)

Synchronous CommunicationSynchronous Communication Asynchronous CommunicationAsynchronous Communication


J2EEJ2EEEJBEJB

EJB usually plays roles in business tierEJB usually plays roles in business tier


J2EEJ2EEService TechnologiesService Technologies

JMS (Java™ Messaging Service) Standard API for messaging

JavaMail™ API allows an application component to send Internet mail.

JAF (JavaBeans™ Activation Framework) Supports handling data in different MIME types

JAXP (Java™ API for XML Parsing) SAX and DOM parser XSLT transform

JCA (J2EE™ Connector Architecture) The Connector architecture is a J2EE SPI that allows resource

adapters that support access to Enterprise Information Systems to be plugged in to any J2EE product.


J2EEJ2EEService TechnologiesService Technologies

JDBC APIJDBC API API for connectivity with relational database systems.API for connectivity with relational database systems.

JTA (Java™ Transaction API)JTA (Java™ Transaction API) An application-level demarcation interface that is used by the An application-level demarcation interface that is used by the

container and application components to demarcate transaction container and application components to demarcate transaction boundaries.boundaries.

An interface between the transaction manager and a resource An interface between the transaction manager and a resource managermanager

JNDI (Java Naming and Directory Interface™)JNDI (Java Naming and Directory Interface™) Standard API for naming and directory access.Standard API for naming and directory access.

Security ServicesSecurity Services The Java™ Authentication and Authorization Service (JAAS) The Java™ Authentication and Authorization Service (JAAS)

enables services to authenticate and enforce access controls upon enables services to authenticate and enforce access controls upon usersusers.


J2EEJ2EE

WebWeb ServicesServices J2EE provides full support for both clients of web services as well J2EE provides full support for both clients of web services as well

as web service endpoints.as web service endpoints. ManagementManagement

The Java 2 Platform, Enterprise Edition Management Specification The Java 2 Platform, Enterprise Edition Management Specification defines APIs for managing J2EE servers using a special defines APIs for managing J2EE servers using a special management enterprise bean.management enterprise bean.

The Java™ Management Extensions (JMX) API is also used to The Java™ Management Extensions (JMX) API is also used to provide some management support.provide some management support.

DeploymentDeployment The Java 2 Platform, Enterprise Edition Deployment Specification The Java 2 Platform, Enterprise Edition Deployment Specification

defines a contract between deployment tools and J2EE products.defines a contract between deployment tools and J2EE products.

Service TechnologiesService Technologies


J2EEJ2EECommunication TechnologiesCommunication Technologies

InternetInternet protocols protocols TCP/IP, HTTP, HTTPS/SSL.TCP/IP, HTTP, HTTPS/SSL.

OMG ProtocolsOMG Protocols Java IDL (Java Interface Definition language)Java IDL (Java Interface Definition language)

Allows J2EE application components to invoke external CORBA Allows J2EE application components to invoke external CORBA objects using the IIOP protocol.objects using the IIOP protocol.

RMI-IIOP (Java Remote Method Invocation over Internet Inter-ORB RMI-IIOP (Java Remote Method Invocation over Internet Inter-ORB Protocol technology)Protocol technology)

To enable interoperability between J2EE productsTo enable interoperability between J2EE products


J2EEJ2EESecuritySecurity

Web Application Security: Authentication:

HTTP Basic and Digest Authentication Form-Based Authentication HTTPS Client Authentication

Authorization Declarative Security Programmatic Security

Confidentiality and Integrity EJB Security

Authentication (JAAS) Authorization

Declarative Security Programmatic Security


J2EEJ2EESecuritySecurity

Security InteroperabilitySecurity Interoperability IIOP/SSLIIOP/SSL CSlv2CSlv2

Web Services SecurityWeb Services Security End-to-End SecurityEnd-to-End Security XML Digital Signature and XML EncryptionXML Digital Signature and XML Encryption SAMLSAML WS-SecurityWS-Security


J2EEJ2EETransactionTransaction

Support distributed transaction Supports Flat transaction modelSupports Flat transaction model Does not supports Nested transaction modelDoes not supports Nested transaction model

Provide ACID (Atomicity, Consistency, Isolation, and Durability) properties


J2EEJ2EE

There are two types of transactions Container-Managed TransactionsContainer-Managed Transactions

Bean-Managed TransactionsBean-Managed Transactions

TransactionTransaction

Container-Managed demarcationContainer-Managed demarcation

Bean-Managed demarcationBean-Managed demarcationDatabase A Database B

Client

EJB server

Begin

Commit

Bean A

Bean A

Bean A

Bean A

Database A

EJB server

Database B

EJB server

ClientBean

ABean

A

Bean A

Bean A

Begin

Commit

Begin

Commit


.NET.NET

.NET is the Microsoft solution for Web services, the next .NET is the Microsoft solution for Web services, the next generation of software that connects our world of generation of software that connects our world of information, devices, and people in a unified, personalized information, devices, and people in a unified, personalized wayway

Supports multiple operating systemsSupports multiple operating systems Supports multiple programming languages. But you’ll have Supports multiple programming languages. But you’ll have

to use special .NET variantsto use special .NET variants Supported by one vendorSupported by one vendor


.NET.NETFrameworkFramework

Windows COM+ Services

Common Language Runtime

Base Class Library

ADO.NET and XML

ASP.NET/Web Forms Windows Forms

Common Language Specification

VB C++ C# JScript …V

isua

l Stu

dio

.NE

T

.NET Remoting


.NET.NET

Consists of two components:Consists of two components: The form with its controls (.aspx file)The form with its controls (.aspx file) The code behind it that handles events associated with the form's The code behind it that handles events associated with the form's

controlscontrols Code behind file can be written in any .NET languages (C#, Code behind file can be written in any .NET languages (C#,

VB.NET…)VB.NET…)

ASP.NET/Web FormsASP.NET/Web Forms

Web Form UI (aspx)

Code behind Class

System.Web.UI.Page

Code behind association

Inherits


.NET.NET

Provides a unified programming model for standard Windows application development Window API

.NET Window Form.NET Window Form

Windows FormsWindows Forms

HWND hwndMain = CreateWindowEx( 0, "MainWClass", "Main Window", WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, (HWND)NULL, (HMENU)NULL, hInstance, NULL); ShowWindow(hwndMain, SW_SHOWDEFAULT); UpdateWindow(hwndMain);

Form form = new Form();form.Text = "Main Window";form.Show();

How much simpler ?


.NET.NET

Provides a hierarchy of classes to create UI components Provides a hierarchy of classes to create UI components such as Forms, TextBoxes, Buttons,…such as Forms, TextBoxes, Buttons,…

Any .NET language can use this collection of classes that Any .NET language can use this collection of classes that make up the Windows Forms object model.make up the Windows Forms object model.

Fully supports and integrates with Web Services, ADO.NET, Fully supports and integrates with Web Services, ADO.NET, and the .NET Framework base classes.and the .NET Framework base classes.

Windows FormsWindows Forms


.NET.NET.NET Remoting.NET Remoting

Application Domain

Allows to instantiate components on remote computer and use Allows to instantiate components on remote computer and use them as local componentsthem as local components

Communicate channels: HTTP or TCPCommunicate channels: HTTP or TCP Deployment: Window form application, Console application,Deployment: Window form application, Console application,

Dedicated window service, IIS (with ASP.NET)Dedicated window service, IIS (with ASP.NET)

Application Domain

Client Object

Component

Direct access to component

Component

Communication between AppDomains

ProxyChannel


.NET.NETXML Web ServicesXML Web Services

Allow access to software components through standard web Allow access to software components through standard web protocols such as HTTP, SMTP,…protocols such as HTTP, SMTP,…

Base on XML and SOAP Base on XML and SOAP Can be written in any .NET language (C#, VB.NET,…)Can be written in any .NET language (C#, VB.NET,…)

InternetSearch for Web

Service functionality

InternetSearch for Web

Service functionality

1

2

3

4

Web Service Vendor

WSDL File

Web Service

UDDI Registry

Discovery

Interface

SOAP MessagesInternetInternet

DISCO File


.NET.NETADO.NETADO.NET

Provides consistent access to data sources such as SQL Server, Provides consistent access to data sources such as SQL Server, Oracle, Access,...Oracle, Access,...

Leverages Current ADO KnowledgeLeverages Current ADO Knowledge Supports the N-Tier Programming ModelSupports the N-Tier Programming Model Supports XMLSupports XML


.NET.NETCOM+ (Serviced components) COM+ (Serviced components)

The .NET Framework enables you to create components The .NET Framework enables you to create components called called serviced componentsserviced components, to access COM+ services, to access COM+ services

System.EnterpriseServicesSystem.EnterpriseServices namespace provides namespace provides classes, interfaces and attributes for communicating with classes, interfaces and attributes for communicating with Component ServicesComponent Services

Component Services of COM+Component Services of COM+ TransactionsTransactions Queued ComponentsQueued Components SecuritySecurity JIT ActivationJIT Activation Object PoolingObject Pooling


.NET.NETTransaction Transaction

Provide ACID propertiesProvide ACID properties AAtomicitytomicity CConsistency onsistency IIsolationsolation DDurabilityurability

Serviced Components have the ability to participate in Serviced Components have the ability to participate in transactions by voting on the outcome of the transactions by voting on the outcome of the operationsoperations


.NET.NETSecurity Security

.NET Framework security.NET Framework security Role-based securityRole-based security Code access securityCode access security Code signingCode signing

What is the codeEvidence-based authentication

What does the code doPermission-based

Authorization

CASPolicyCAS

Policy

UserUser

CodeCode

Code Access Security

Security Resources

Privileged Operation

Security Resources

Privileged Operation

Evidence



ASP.NET securityASP.NET security AuthenticationAuthentication

Forms-based authenticationForms-based authentication Windows authenticationWindows authentication Passport authenticationPassport authentication

Authorization and ImpersonationAuthorization and Impersonation URL authorization URL authorization Resource authorizationResource authorization



What is the codeEvidence-based authentication

Authenticated Caller’sAccess token (or

IUSR_MachineAccess token)

ASP ProcessesOriginal Caller

Fixed proxy Identity

Authorization

Web permissionsNTFS Permission

IP Address Restriction

Authorization

Web permissionsNTFS Permission

IP Address Restriction

Authentication

Anonymous Basic Digest

Integrated Certificate

Authentication

Anonymous Basic Digest

Integrated Certificate

ASP.NET(aspnet_wp.exe)

Authorization

File AuthorizationURL

Authorization.NET Roles

Authorization

File AuthorizationURL

Authorization.NET Roles

Authentication

WindowsForms

Passport None

Authentication

WindowsForms

Passport None

HTTPRequests

SSL

1

Web Server

2 3 5 6

4

Local or Remote Resource

Local or Remote Resource

7

Identity

ASP.NET ASP.NET SecuritySecurity


.NET.NETBase Class LibraryBase Class Library

System System

System.DataSystem.Data

System.WebSystem.Web

Globalization

Diagnostics

Configuration

Collections

Resources

Reflection

Net

IO

Threading

Text

Service Process

Security

OleDb

Common

SqlTypes

SqlClient

Runtime

InteropServices

Remoting

Serialization

Configuration SessionState

Caching Security

Services

Description

Discovery

Protocols

UI

HTMLControls

Web Controls

System.XmlSystem.Xml

XPath

Schema

XPath

Serialization

System.DrawingSystem.Drawing

Imaging

Drawing2D

Text

Printing

System.Windows.FormsSystem.Windows.Forms

Design Component Model


J2EE Distributed SystemJ2EE Distributed System

Data

Databases


Legacy Systems

Business Logic

Application Servers

Application Server

Presentation

Web Server

Web Server

Workstation

Workstation

Workstation

Workstation

Firewall

Firewall

Firewall

Firewall

Swing

JSP

Servlet

Browser

HT

TP

EJB - Session

EJB-Entity

EJB-MDB

JMS

Java mail

RM

I/II

OP

, S

OA

P

Oracle Database

MS SQL Database

Data in XML Format

JDB

C/J

DO


.NET Distributed System.NET Distributed System

Data

Databases


Legacy Systems

Business Logic

Application Servers

Application Server

Presentation

Web Server

Web Server

Workstation

Workstation

Workstation

Workstation

Firewall

Firewall

Firewall

Firewall

Windows Forms

ASP.NET/ Web Forms

ASP.NET/ XML Web Services

Browser

HT

TP

Managed Classes

(Base Class Library)

COM+ DCOM (Serviced

Components)

.NE

T R

em

oti

ng

, S

OA

P

Oracle Database

MS SQL Database

AD

O.N

ET

Data in XML Format



TechnologyTechnology J2EEJ2EE .NET.NET

TechnologyTechnology

Type of Technology Standard (Specification) Product

Programming Language Java C#, J# , C++, VB.NET, Cobol

Library Java API Based and Extended classes

Run-time Environment JVM CLR

Distributed Protocol RMI-IIOP, SOAP, CORBA DCOM, SOAP

Platform Support Multiple Platforms Windows

Presentation Tier TechnologiesPresentation Tier Technologies

Infrastructure Standard (Specification). There are several web servers

IIS

Programming Model JSP, Servlet, Swing ASP.NET, WebForms, WindowForms

Technologies EquivalencesTechnologies Equivalences




Business Logic Tier TechnologiesBusiness Logic Tier Technologies

Infrastructure EJB ( Session Bean, Entity Bean and Message Driven Bean). Provided by the server

COM+. Provided by the Platform

Asynchronous JMS MSMQ

Distributed Transaction JTS MS-DTC

Connectivity JDBC, JCA (Java Connector Architecture)

ADO.NET, HIS (Host Integration Server)

Naming and Directory Service

JNDI(Java Naming and Directory Interface)

ADSI (Active Directory Services Interface)

Security JAAS, supported by the Server

COM+ Security , Supported by platform





Other TechnologiesOther Technologies

Web Services XML Web Services XML Web Services

XML Parser JAXP Build-in



J2EE or NET?J2EE or NET?

CriteriaCriteria J2EEJ2EE .NET.NET CommentsComments

Easy of use Easy of use (Development (Development Environment)Environment)

VB.NET and C# are easier to use than J2EEVB.NET and C# are easier to use than J2EE

because of VS.NETbecause of VS.NET

ScalabilityScalability Execute Java code on mainframeExecute Java code on mainframe

Single LanguageSingle Language

Multiple Platforms Multiple Platforms

Java can run on many platformsJava can run on many platforms

Multiple Languages,Multiple Languages,

Single platformSingle platform

VB, C#, J#, etc. all run in the same run-time VB, C#, J#, etc. all run in the same run-time environmentenvironment

ReliabilityReliability VB/COM developed in 1993 (J2EE – 1999)VB/COM developed in 1993 (J2EE – 1999)

PerformancePerformance Both will perform equally wellBoth will perform equally well

Speed of Speed of developmentdevelopment

Visual Basic code is easier to learnVisual Basic code is easier to learn

ReuseReuse Deploy same code on multiple platforms andDeploy same code on multiple platforms and

multiple projectsmultiple projects

Open StandardOpen Standard Java, JVM are open standardsJava, JVM are open standards

ScorecardScorecard


J2EE or .NET?J2EE or .NET?


ReferencesReferences

MicrosoftMicrosoftwww.microsoft.com

SUNSUNwww.sun.com

IBMIBMwww.ibm.com

J2EE vs. .NETJ2EE vs. .NET The Platform Wars: .NET vs. J2EEThe Platform Wars: .NET vs. J2EE

Brian G. Lyons, Number Six Software, Inc.Brian G. Lyons, Number Six Software, Inc. J2EE vs. .NETJ2EE vs. .NET

Roger Sessions, ObjectWatch, Inc.Roger Sessions, ObjectWatch, Inc.


AppendixAppendix

Session Beans: A session bean Session Beans: A session bean represents a single client represents a single client inside the Application Serverinside the Application Server Stateful session beans: Can maintain a conversational state for the Stateful session beans: Can maintain a conversational state for the

clientclient Stateless session beans: Does not maintain a conversational state Stateless session beans: Does not maintain a conversational state

for the clientfor the client Message Driven BeansMessage Driven Beans

Allows J2EE applications to process messages asynchronouslyAllows J2EE applications to process messages asynchronously Entity Beans: An entity represents a business object and Entity Beans: An entity represents a business object and an an

in-memory view of persistent data (data in a database)in-memory view of persistent data (data in a database) Container-Managed Persistence: Declarative persistentContainer-Managed Persistence: Declarative persistent Bean-Managed Persistence: Programmatic persistentBean-Managed Persistence: Programmatic persistent

J2EE-EJBJ2EE-EJB


GlossaryGlossary

Acronyms/Acronyms/

AbbreviationsAbbreviations DefinitionsDefinitions

JTA Java Transaction API

JAAS Java Authentication Authorization Service

EJB Enterprise Java Bean

JNDI Java Naming Directory Interface

XML Extensible Markup Language

XSL Extensible Style sheet LanguageExtensible Style sheet Language

XSLTXSLT XSL TransformationXSL Transformation

JSPJSP Java Server PageJava Server Page

JDBC Java Database Connectivity

EIS Enterprise Information System

DTO Data Transfer Object

MVC Model View Controller

JDOJDO Java Data ObjectJava Data Object


GlossaryGlossary

Acronyms/Acronyms/

AbbreviationsAbbreviations DefinitionsDefinitions

WMLWML Wap Markup Language Wap Markup Language

OMGOMG Object Management GroupObject Management Group

CORBACORBA Common Object Request Broker ArchitectureCommon Object Request Broker Architecture

RMI-JRMIRMI-JRMI Remote Method Invocation - Java Remote Method ProtocolRemote Method Invocation - Java Remote Method Protocol

RMI-IIOPRMI-IIOP Java Remote Method Invocation over Internet Inter-ORB Protocol Java Remote Method Invocation over Internet Inter-ORB Protocol technologytechnology

IDLIDL Java Interface Definition languageJava Interface Definition language

Windows DNAWindows DNA Microsoft Windows DMicrosoft Windows Digital igital interinterNNet Applications et Applications AArchitecturerchitecture

OMGOMG Object Management GroupObject Management Group

CORBACORBA Common Object Request Broker ArchitectureCommon Object Request Broker Architecture

SOAP Simple Object Access Protocol

JITJIT Just-In-Time

MIMEMIME Multipurpose Internet Mail ExtensionMultipurpose Internet Mail Extension

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