ADF taskflows for beginners..
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ADF Task Flows For BeginnersBy Zeeshan Baig, Oracle ACEwww.baigzeeshan.com
A little about me.....I am currently working as Senior Developer at NMH in Chicago. ● 10+ years of experience in Oracle Development
tools (Database, Forms, APEX, ADF, Fusion)● Oracle ACE, OCP DBA certified in 8, 8i and 10g● Technical blog on ADF and other fusion
technologies at www.baigzeeshan.com● YouTube channel http://youtube.com/baigsorcl Disclaimer: The views expressed are my own and does not affiliates with my employer
Agenda● What are Task Flows?● Types of Task Flows?● Other concepts used in Task flows● Understand different components to build
task flows● Introduction of Task flows templates● Some tips on building reusable task flows● Demo● Questions
Thanks Google, Flickr.com and Oracle documentation for images used in this presentation. These images are unmodified and used for educational purpose only.
What are task flowstheir typesand other concepts?
What are Task Flows?In simple words ● Visual representation of app process flow● Each TF contains portion of app navigation● They are similar to traditional flow charts● Primary purpose is reuse
Types of Task flows
Un BoundedEntry Points
BoundedEntry Points
Exit Points Exit Points
Types of Task FlowsKey Differences
Un-bounded (UTF) ● Public pages / No boundry● No reuse● No input parameters● No return values● No transaction Control● No security● e.g. Pages - Home, Help,
Search, Navigations
Bounded (BTF) ● Well defined boundry● Reusable● Can take input parameters● Can return values● Allows transaction control● Security control● e.g. Register, Checkout,
other application processes
Bounded Task flows● A typical application contains one
unbounded task flow and many bounded task flows
● Build bounded task flows in its own application / workspace
BTFs can● Create with Pages or Page fragments● Create as Train flows● Call in a Dialog
Bounded Task flowsTrain FlowsVideo tutorial at http://www.baigzeeshan.com/2010/10/creating-train-flows-in-oracle-adf.html
Page vs Page FragmentPage Fragment● Renders as content in another JSF page● Must not contains the af:document, af:form, f:view,
head, body and html because JSF page already has it● has .jsff extension Page● can contains many fragments● extension .jsf or .jspx
Task flow Regions
Static Regions● Fixed visiblity● Creates Task flow
binding on page ● Tutorial http://www.
baigzeeshan.com/2010/04/creating-pages-with-regions-in-oracle.html
Dynamic Regions● Visible based on custom logic● Creates Multi-taskflow
binding ● Tutorialhttp://www.baigzeeshan.com/2010/06/working-with-dynamic-regions-in-oracle.html
Regions are created when you drag and drop a bounded task flow on a page
Task Flow Managed Bean Scopes1. Application.....2. Session..........3. PageFlow......4. View...............5. Request.........6. BackingBean.7. Flash Scope..
Remains till application stopsPersists till user sessionAlso known as Task flow scopeLifespan till current pageLives for duration of request onlyUI Component basedRemains Till Next encountered view (new in JSF 2.0)
Task flow Managed BeanScopes
OK I got it... now what components i need to build them?\
Task Flow Components
Task flow ComponentsView Activity
● Displays a JSF Page or Fragment● Extension .jsf, .jspx and .jsff
(fragments)● Bookmarkable only in unbounded
Task flows● Can have one or more task flow
regions● Good practice to have page
definition file attached
Task flow ComponentsMethod Call
Activity
● Allows to call application logic in task flow
● Drag and drop methods from Data Control
● OR DnD from component palette then configure parameters to call managed bean methods
● Common usages are initialization, Clean-up, expcetion handler
● Can have return values in case of method returns some result
● if method is of 'void' type then outcome would be simple string
Task flow ComponentsRouter Activity
● Route to any activity based on EL
expression● Have default condition● No Limits on conditions● No limits on destinations● Good practice is to start your task
flows with Router for any future customizations.
Task flow ComponentsTask flow call
activity
● Calls another task flow from
unbounded and bounded task flow
● Can take input parameters ● Can return output parameters● Drag and Drop task flow from
Application navigator to task flow● Drag and Drop task flow to the
page as link or button
Task flow ComponentsTask Flow
Return
● Used to ends or send controls
back to caller in Bounded Task flows
● Does either Commit or Rollback (If Task flow is transactional)
● Set outcome to required control flow navigation-case.
● BTF can have many TF return activities
Task flow ComponentsURL View
Activity
● Used to Redirect application to
addressable URL● Can call BTFs● Can call View activities on UTF● Can call external sites e.g. http:
//www.google.com● No Control returned to caller
Task flow ComponentsSave point
Restore
● Allow to restore application to
previous state● Supports Save for later
functionality● Only required where Restore
needed
Task flow ComponentsParent Action Control flow case Wild-card
● Allows to trigger navigation of Parent view activity in ADF Region
● Identifies how control will
paas from one activity to another
● Represents global
navigation case
Building Task Flows
Building Task Flows
Task flow Templates● You can create task flow
templates for common activities in bounded task flows
● Common use case is error handler
● Best practice is to use template for all bounded task flows
How to Reuse Task flows in Different Application
● Create Deployment Profile ADF Library Jar
● Deploy as ADF library Jar● Create Connection as File system in
Resource Palette● Drag and Drop from Resource
Palette to your page and ADD libary path
● Complete Tutorial available at http://www.baigzeeshan.com/2010/08/sharing-business-components-and-task.html
Tips to build Reusable Task Flows● Build BTFs in seperate application then
merge them into master app using ADF Lib Jar
● Use task flow with page fragments● Use Input parameters● Use Router activity as default ● Set conditional behaviour of UI components
based on Input parameters e.g. read-only, show/hide
● Use dynamic regions
Demo Example● Search Employees - Provides Search facilitySecured, called as normal on Home page and as List of values on upload photo task flow● View / Edit Employees
Secured, Allows 'Managers' to edit and 'endusers' to view employee detail. Displayed as ADF region and deployed as ADF library jar● Upload Photo - Task flow to upload employee photo
Secured, Called as Dialog and later calling search flow in a model dialog● Public
Runs a flash movie on home page for all unauthenticated users for authenticated users displays graphs based on user type
My ContactBLOGhttp://baigzeeshan.com YouTube Channelhttp://youtube.com/baigsorcl [email protected]
Congratulations......You are now Task flows Expert.... Thank you