Oracle JDeveloper 10g Overview

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Web Development with
Karsten Schulz Terp-Nielsen Senior Principal
Consultant Oracle Denmark
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Agenda

• JDeveloper 10g overview
• Application Developer Framework (ADF)
• Struts
• ADF Components
• ADF UiX

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Oracle JDeveloper 10g Overview
Java Client Support
Web Server Support
App Server Support
Database Support
Integrated Development Environment
Core Java Platform
JDeveloper tilbyder en end-to-end løsning for
Internet applikationsudvikling Profiler,
Codecoach, TOAD functionality, Model driven J2EE
development etc.
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Full Lifecycle Support
Design

DataModeling
Application Modeling
Infrastructure
IDE Platform
Build

Coding
Test

Debugging
Tuning
Configuration Management
Deploy

Deployment
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Web Services Development
Model Visualize
Browse UDDI
Develop Deploy
WS-I Monitor,Debug Tune
GenerateWSDL Skeleton
GenerateStub Client
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Open Source Integration

• Apache Ant
• System build tool
• JUnit
• Unit testing
• CVS
• Version control
• Struts
• MVC Framework
• JBoss
• Linux

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JDeveloper Framework Support

• J2EE Frameworks
• Application Development Framework (ADF)
• Apache Struts support
• ADF Business Components
• Oracle 9i/AS10g Toplink
• UiX/Java Server Faces (JSF)

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StrutsModel 1 Architecture

• Browser access JSP pages JSPs access JavaBeans
  that represent model
• Control de-centralized current page display,
  determined next page to display
• Complex navigation requires use of scriplet code
• Blurs the line between presentation and
  navigation code and making reuse difficult
• Not a model to use in practice - maintenance
  difficult and does not scale well

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StrutsModel 1 Architecture
Model 1
Decentralized controller - in each JSP page
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StrutsModel 1 Architecture
No MVC - Statically Linked Pages
Servlet/JSP
Servlet/JSP
Servlet/JSP
Servlet/JSP
Web Server
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StrutsModel-View-Controller Model 2

• Introduces a controller servlet
• Controller Servlet handle the data access and
  navigational flow
• JSPs handle presentation
• Controller centralizes the logic for dispatching
  requests to the next view based on the request
  URL, input parameters, and application state
• Controller also handles view selection, which
  decouples JSP pages and servlets from one another

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StrutsModel-View-Controller Model 2
Controller
HTTP
State Change
JavaBean
Request
Servlet
View Selection
User Actions
JDBC
Database
HTTP
Enterprise
Response
State Query
JavaBean
JSP
Change Notification
View
Model
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StrutsModel-View-Controller Model 2
Applying MVC to a Page Flow
Web Server
Servlet/JSP Controller
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StrutsWhat is It ?

• Open source Apache Jakarta Project
• An implementation of MVC paradigm
  (Model-View-Control)
• A framework written in Java, to build web tier
  employing servlets, JSPs and XML
• De facto standard for J2EE MVC applications
• Bundled with JDeveloper and works on OC4J(Oracle
  Containers for Java)

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StrutsComponents

• ActionServlet class Part of controller that
  receives user input and state changes and issues
  view selections
• Action class Part of controller that interacts
  with model to execute a state change or query
• ActionForm Beans Data (from Form) bundled into
  Javabean for reuse and perform validation
• ActionForward class stores path to a page where
  the user is sent to
• ActionMapping holds mapping that tells
  controller which Actions, ActionForms,
  ActionsForwards to use

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StrutsComponents (2)

• Struts-config.xml Glue of the framework - holds
  declarations of the earlier listed components and
  other details. ActionServlets reads this file
  and create the configuration objects in memory
• Strut Tag Libraries Custom tags that simplify
  working with Struts aiding the view component and
  access Model thru Java Beans
• Property files store messages and handle
  different languages

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StrutsStruts Pictorially
Web Browser
Jsp 1
Jsp 3
Jsp 2
Page 1
View Layer
request/session
App Server
JSP Engine
Form Bean 1
Form Bean 2
Other Bean 1
Controller
Struts- config. xml
Mappings
Action2 .java
Action3 .java
Action4 .java
Action1 .java

• path
• action
• form bean
• forwards

Business Logic Layer
Business Bean 1
Business Bean 2
Business Bean 3
JDBC
Data Layer
Database
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How it all Works
Jsp 1
Jsp 2
Jsp 3
Jsp 2
Jsp 2
Page 1
pure HTML sent to browser
Web Browser
processes custom tags fill form elements from
beans, display internationalized messages
Application Server
request/session
View Layer
incoming requests
Form Bean 1
Jsp Engine
Form Bean 2
relevant page called
if submit, auto populates form bean from request
params

creates/reuses any associated form bean






reads on start-up
Controller
Struts- config. xml
looks up path to determine action/ form bean
creates
passes control to relevant action to handle
returns appropriate forward
Mappings
Action2 .java
Action3 .java
Action1 .java

• path
• action
• form bean
• forwards

interacts with lower layers - acts as adaptor
between HTTP and layers below
gets data to display (adds to beans in
request/session)or saves data from beans via
business rules
Business Logic Layer
Business Bean 1
Business Bean 2
Business Bean 3
Data Layer
Business Data
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Oracle ADFEnd-to-end J2EE Framework

• Implements standard J2EE best practices
• Model-View-Controller (MVC) design pattern
• Focus on the application, not the plumbing
• Consolidation and evolution of previous frameworks

Web and Wireless Clients
Rich Clients
Controller
Model
Business Services
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ADF Productivity With Choice
Rich Client
Web / Wireless
View
Swing / JClient
JSP
ADF UIX
JSF
Controller
Struts
ADF Bindings
Model
ADF Data Control
BusinessServices
JavaClasses
EJBSessionBeans
WebServices
ADF Metadata Services
JDBC
TopLinkQueries
EJBFinders
DataAccess
PersistentBusinessObjects
Java Classes
EJB Entity Beans
TopLink Mapping
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ADF Business Components
Simplifies and optimizes O/R mapping
Simplifies and optimizes binding of View to logic
Deployed either as a Local Model or as a
remote Session Facade
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ADF BC High-level architecture
HTML, Java, and XML Interfaces
BusinessLogic
Data Presentation Manipulation
Task-BasedApp Service
View
Entity
Application
PaymentPlan Mgmt
SlowPayingCustomers
Customer
Bill
LatePayments
Payment
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ADF BC Application
Entity Objects
View Objects
TopCustomers
Customer
Ord
PendingOrders
Database
Application Module
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ADF Business Components

• The ADF Business Components framework comes with
  an implementation of time-saving ingredients
• A Query Bean named ViewObject implements the Data
  Access Objects, Fast-Lane Reader, Value List
  Handler and Page-by-Page Iterator patterns
• A Generic Value Object Bean named Row implements
  the Value Object pattern (can have a type-based
  too)
• An MVC Application Object Bean named
  ApplicationModule implements the data model in a
  Model/View/Controller pattern providing a Session
  Facade
• A generic JSPData Binding Tag Library handles all
  of your JSP data-binding for any view you need
  (can be based on Struts)
• A generic JClient Data binding of Swing
  components for any view you need
• A generic UiX Binding (JSF impl.) for any View
  you need

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ADF BC Features

• Integrated with JDeveloper
• Manage concurrency (optimistic/pessimistic)
• Row spilover functionality
• State failover support
• Forward/Reverse engineering support
• Build-in Caching
• Based on XML metadata
• Addresses lazy-loading of data
• Highly optimized JDBC data access
• Contains build-in metrics for DMS

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ADF UiXDefinition

• XML Meta data based View technology
• Designed for the JavaServer Faces standard
  (JSR-127)
• Supports a variety of clients
• HTML-compliant browsers
• mobile devices
• Rich UI components, layouts and render kits
• Powerful Runtime Features
• Partial page rendering
• Automatic sorting
• Look and feel customization

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ADF UiXUiX Basics

• UIX pages constitute the core visual aspects of
  an application
• You use UIX Components to create UIX pages

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ADF UiXUiX Basics

• A UIX page lets you specify the page layout, data
  sources, and events for a user interface
• Each UIX page is the logical representation of a
  user interface in an application
• The same logical page can be presented as an
  output page for many client devices, e.g., an
  HTML page for a web browser
• Dynamic data content in a UIX page is achieved
  through data binding with any data source
• UIX has built-in data binding support for
  Business Components for Java (BC4J) and JavaBeans

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ADF UiXUiX Basics

• A UIX page consists of a hierarchical tree of
  user interface nodes
• Each user interface node can have none, one, or
  more child nodes this means a node can be a
  parent and a child node at the same time

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ADF UiX UiX Visble and non-visible components

• User interface nodes define both the visible and
  non-visible user interface components in a page
• Examples of visible user interface components
  include text and images, and standard HTML
  controls such as buttons and checkboxes
• Non-visible user interface components do not map
  to visible objects but they organize and manage
  the layout, appearance, and behavior of other
  components
• For example, the StackLayout component does not
  define a visible object but it causes the child
  components to lay out vertically in a page

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ADF UiX UiX Page Construction

• Thus, a logical tree-like structure of parent and
  child nodes form the basis for the construction
  of a visual, physical hierarchy of user interface
  components on a page for a browser or a mobile
  device
• The page construction occurs dynamically through
  client-specific renderers of the UIX Components

lthtmlgt ..... lt/htmlgt
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ADF UiX UiX Page Design

• By default UIX implements the Oracle Browser Look
  and Feel (BLAF) for your UIX application by using
  a cascading style sheet