Oracle ADF Architecture TV - Design - Application Customization and MDS

Real World ADF Design & Architecture Principles
Application Customization and Personalization
ORACLE
PRODUCT
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15th Feb 2013 v1.0

Learning Objectives
•  At the end of this module you should be able to:
–  Know about the differences between Customization and
Personalization
–  Explain the MDS architecture
–  Understand how to apply customization to an ADF application
and how to deploy customized applications
–  Identify the number of MDS instances and partitions you need for
an application
Image: imagerymajestic/ FreeDigitalPhotos.net

Program Agenda
•  Intro
•  Adaptation
•  Personalization
•  Customization
•  Composer (Customization @ Runtime)
•  Personalization & Customization Architecture

5 Copyright © 2013, Oracle and/or its affiliates. All rights reserved.5 Copyright © 2013, Oracle and/or its affiliates. All rights reserved.
You can only please most people some of the
time, and some people most of the time.
Image: Ambro/ FreeDigitalPhotos.net

You can only please most people some of the
time, and some people most of the time.
Image: Ambro+imagerymajestic/ FreeDigitalPhotos.net
What if it was possible for anyone
at any time?

Application Development Framework (ADF)
•  ADF Faces Rich Client
•  Data Visualization Components
•  ADF Controller
•  ADF Binding Layer
•  ADF Business Components
Candidates for Customization and Personalization

How does customization and personalization fit in
an architect training course?

Program Agenda
•  Intro
•  Adaptation

Adaptation
•  Adaptive Design
–  Build responsive user interfaces
•  Adapting to user agents
–  Screen resolution
–  Touch support
–  Responsibility

Program Agenda
•  Intro
•  Adaptation

Personalization Use Case
•  Wants different order of panel boxes in a panel dash board
•  Prefers data table columns in a different order
•  Likes to re-arrange order of input fields in an input form
•  Needs application to memorize collapse state of panelBox,
panelSplitter, showDetail header
•  Wants to save custom af:query settings
A User …

Application Personalization in ADF Faces
•  Persists changes for ADF Faces components and restores them
•  User personalization based on end user interaction
–  Changes to an attribute value
–  Addition or removal of a child component
–  Re-ordering of children within the same parent
–  Move of child component to a different parent

Personalization With MDS Or Without?

Personalization Without MDS
•  All component changes are saved for the duration of the user
session
–  No filtering of components that should not be personalizable
–  All changes are kept in session object, which has an impact to
performance for large applications

Personalization With MDS
•  Personalization is saved beyond application re-start
•  You can define which component type and which component
attributes can be personalized
–  Configuration in adf-config.xml
•  Each UI component has a persist / dontPersist property that allows
you to override the global component type settings for fine granular
personalization definitions
–  Personalization by component instance added to a page or view

Program Agenda
•  Intro
•  Adaptation

Customization Use Case
•  Requires additional input fields and business service attributes in
specific geographic regions
•  Needs a way to provide experienced users with a "type ahead" form
whereas novice users need data input wizards and LOV
•  Requires an application to render different if accessed from outside
of the intranet or after business hours
•  Wants to perform navigation differently based on user
responsibilities identified by application roles
•  Show different user information based on user's role in the company
A Business …

Customization Should
•  Not impact the base application
•  Support patching and upgrades
•  Require zero or only minor application downtime
•  Be easy to manage and maintain
•  Be provided with optimized performance
•  Be scalable and fail over enabled
•  Be applied conditionally

Customization Layers in MDS
•  Customization layers are defined and configured as Java objects
•  Seeded metadata changes are associated with a customization
layer
•  Order of layers matters
•  Personalization always is the "tip-layer"

Metadata Customization
Base
App

Individual

Customiza4on

Individual

Customiza4on

Group

Customiza4on

Group

Customiza4on

Adding Customization To ADF Applications
•  Build the base application
•  Enable MDS and seeded customization
•  Optionally, create your own customization class
–  Name
–  Cache hint
–  Layer name
•  Configure customization classes in adf-config.xml
–  Important: add UserCC customization object for user specific
personalization

Default Customization Classes in ADF
•  UserCC
–  Returns the Principal name for authenticated user
–  Use for end user personalization
•  SiteCC
–  Returns "site" as layer value
•  ADFRolesCC
–  Returns enterprise and application role names
•  Use enterprise roles for site level customization
•  Use application roles for seeded customization

Ho-to Build Seeded MDS Customizations
Declarative Development
•  Start Oracle JDeveloper with the
Customization Developer Role
•  Define metadata changes for defined
customization layers
•  Note that developer experience is the
same as when creating base metadata
•  Only existing metadata is customizable
–  No Java objects

Packaging of Defined Customizations
•  A Compressed archive of selected metadata
•  Used to deploy metadata content to MDS repository
•  Used by the following application types
–  ADF applications
–  SOA composite applications
–  Oracle WebCenter Portal applications
Metadata Archive (MAR)

Packaging of Defined Customizations
Metadata Archive (MAR)

Program Agenda
•  Intro
•  Adaptation

Oracle WebCenter
•  Integrated set of products to build social applications, collaborative
communities, composite applications and enterprise portals
•  Product and Framework built based on Oracle ADF
•  Leverages ADF Security for application security and customization
authorization
•  Separate license from Oracle ADF

Oracle WebCenter
•  Browser based platform
•  Allows page and layout customization
at runtime
•  Includes
–  Resource Catalog to select view
components and services (developed as
task flows)
–  Sandbox to test changes in isolation
•  Provides additional ADF layout
container components
Oracle Composer

Program Agenda
•  Intro
•  Adaptation

Layered Customization Runtime View
Application
View
Controller
ADF Model
ADF BC
Layer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7
Personalization
Base App
Seeded Customization

Application Runtime View

How many customization layers do I need and what is
the number of layers I should not exceed?

Could I use customization for implementing
security?

Anything I have to keep in mind when using MDS
to implement security?

Conclusion
•  Customization and Personalization should be
considered as part of the application design to avoid
unnecessary coding
•  Consider performance aspects when applying
customizations and personalization features
•  Customization may be used to enforce security. If you
do so
–  Ensure application is save when MDS repository content is missing
–  Implement defense in depth in that you backup MDS security
definitions in the application
•  Consider a deployment strategy that allows you to
upgrade applications and FMW components

Further Reading
•  Building Customizable Applications Using Oracle Metadata Services (III)
–  http://www.oracle.com/technetwork/articles/adf/part10-085778.html
•  Fusion Middleware Fusion Developer's Guide :
–  Customizing Applications with MDS
•  http://docs.oracle.com/cd/E15523_01/web.1111/b31974/customize.htm#CFHBABEB
–  Allowing User Customizations at Runtime
•  http://docs.oracle.com/cd/E15523_01/web.1111/b31974/ad_persist.htm

Oracle ADF Architecture TV - Design - Application Customization and MDS

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