1 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Oracle’s Application Development Framework (ADF) en JHeadstart – Tijd om de balans op te maken Sandra Muller en Peter Ebell (Oracle) en Lucas Jellema (AMIS) AMIS Query, Donderdag 26 mei 2005

2 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Agenda Welkom en introductie Inleiding ADF Binding Framework ADF en WebServices ADF UIX – Customizing the Look & Feel through Skins ADF en JHeadstart – status en toekomst Diner (18.00 uur) Workshop (tot 20.30?)

3 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Oracle Application Development Framework Preview Fall 2003  Production Spring 2004 ADF label on JClient, UIX and BC4J Core of ADF (JSR 227): DataBinding Framework Valuable facilities:  LifeCycle support in Struts and JClient  Integration with IDE: Easy registration of DataControls Drag and drop DataControlBinding and UI generation

4 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken JHeadstart Toolset for Declarative Application Development  Started life in 2001 within Oracle Consultancy  Late 2004: release – support for ADF Generation of View and Controller based on Model and XML-based application definition  Oracle 9iAS MVC Framework and Struts  JSP and UIX  BC4J (ADF BC) and Toplink (only in x release) Support for generation from Oracle Designer Run-time libraries  Struts enhancements; for example Multi Record DML, messages  Client Side: calendar window, no changes to commit  Before ADF: data binding between VC and M

5 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken JHeadstart Next (Patch) Release – end of June Fixes and New features! Only available through Supplement Option  NOT on OTN Do not take the software with you!

6 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Model-View-Controller View Controller Model Business Service ADF BC op Oracle RDBMS POJO TopLink op MySQL Spring Framework WebService op BPEL HTML – JSP or UIX (WebApp) GUI – Swing (Java Client) SOAP/ XML (WebService) PDF, Excel, (Java App) Context Query Data Manipulate Data (update, insert, delete) Invoke methods: calculations, validations,… Business Service Request Event Call/Invocation

7 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken MVC and Role Separation Model is View-unaware  Model provides services, regardless of who will use them View is Model-unaware  View receives data (POJO) to make use of without knowing where the data originates from Controller is Model-implementation unaware  Controller invokes Model services without needing to know the specific technical implementation

8 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken ADF Binding Framework Model provides DataControls that implement generic interfaces  Attribute getValue, setValue  Collection First, Last, Next, Previous, Next Set, Previous Set  Method setParameters, Invoke (doIt), getResult  Business Service Operations: Commit, Rollback ADF contains AdapterClasses that implement the DataControl interfaces for different technologies  Some or more equal than others  For example: ADF BC ViewObject wrapped to implement a Set- style DataControl

9 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken ADF Binding Framework Registering DataControls for a Business Service Model Business Service Business Service - POJO ADF BC op Oracle RDBMS HrmServiceEmployee HrmServiceemployeesraiseSalariesnamejob

10 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Applications register DataControl Bindings Applications are consumers of DataControls Application components register Usage of DataControls (aka DataControl Bindings)  In the UI Model (aka Binding Container)  A bit similar to Oracle Designer’s Module Component with table-usages and column-usages Depending on Application Technology, we will have one UI Model per  Struts Action (== JSP or UIX page)  JClient Frame  Java Class

11 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken ADF Binding Framework - Registering DataControl Usages – Creating UI Model Model HrmServiceemployeesraiseSalariesnamejob Struts + JSP JClient (Swing GUI) SimpleClient (Java program)

12 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken ADF Binding Framework - Registering DataControl Usages – Creating UI Model Model HrmServiceemployeesraiseSalariesnamejob

13 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Demo – Register DataControls and Build UI Models ADF Business Components HrmService  ViewObject employees based on Table scott.EMP  Method raiseSalaries() Struts + JSP WebApplication  DataControl Usage = ControlBinding (iterator binding) for employees as Read Only Table  DataControl Usage = ControlBinding (action binding) for raiseSalaries as button And Method Result as display text Simple Client Java Application  Iterator Binding employees + Action Binding raiseSalaries

14 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Switching Business Services The application accesses generic DataControl Binding interfaces  It is unaware of the business service or the actual implementation  The application only needs: Name of DataControl Type of DataControl (Attribute, Collection, Action) If an alternative Business Service provides the same set of Data Controls  Same name, same type … Then the application should without any change be able to run with the alternative service

15 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Alternative set of HrmService DataControls – based on ADF BC Business Service Model Business Service – ADF Business Components HrmService Business Service - POJO HrmServiceEmployee employeesraiseSalariesnamejob Application Module HrmService ViewObject Employee

16 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Applications running against an alternative Business Service – same set of DataControls Model HrmServiceemployeesraiseSalariesnamejob Business Service – ADF Business Components Application Module HrmService ViewObject Employee AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken

17 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Demo – Switch Business Service Introduce alternative HrmService, POJO based  public Collection getEmployees() beanClass = nl.amis.hrm.Employee  public Double raiseSalaries() Publish DataControls for POJO HrmService Struts + JSP WebApp  Update UIModel Base employees Iterator on POJO HrmService Base raiseSalaries ActionBinding on POJO HrmService Simple Client JClient application

18 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Questions How will ADF Faces and ADF Binding Framework work together? What will happen with JSR-227 Will there be development of more (advanced) DataControl Adapter classes  For Hibernate, Spring Framework, TopLink Will there be ADF Binding Framework (JSR-227) plugins for Eclipse? Will the IDE be enhanced in ? What is the take-up in the market for ADF?

19 AMIS Query - Oracle ADF en JHeadstart, Tijd om de balans op te maken Discussion and Conclusion ADF Binding Framework effectively decouples Model from View & Controller  Allowing for clear roles in development projects ADF allows for quick first steps in application development, while respecting MVC The typical “next steps” are still quite complex  Especially for non-J2EE Web Developers ADF can only be used with JDeveloper 10g ADF is somewhat sparse for non-BC services  Even support for Oracle TopLink is limited Integration between ADF and UIX is not always optimal ADF is part of the strategical tool-stack for Oracle Apps