Mastering Oracle ADF Bindings:
Advanced Techniques
Oracle OpenWorld 2014
About Me
Mastering Oracle
ADF Bindings:
Advanced
Techniques
Sten Vesterli
[email protected]
Oracle OpenWorld
Sep 2014
• 
• 
• 
• 
• 
• 
• 
Sten Vesterli!
Developer, consultant, trainer!
20 years of Oracle experience!
Partner in Scott/Tiger!
Oracle ACE Director!
ADF Certified!
Author of “Oracle ADF Enterprise
Application Development – Made
Simple” (2011, 2014)!
Who is Scott/Tiger?
Scott/Tiger customers
Tiger
Scott
Bruce Scott
(Oracle employee no. 4)
Bruce’s daughter’s cat
Also an Oracle-focused consultancy based in Denmark…
ADF Bindings
Skill Levels
• 
• 
• 
• 
• 
[email protected]
© Sten Vesterli 2014
Novice!
Apprentice!
Journeyman!
Master!
Artisan!
1
Mastering Oracle ADF Bindings:
Advanced Techniques
Oracle OpenWorld 2014
Skill Levels
•  Novice!
Skill Levels
•  Master!
–  Doesn’t know what bindings are!
•  Apprentice!
–  Can read the bindings tab!
–  Can get binding from component!
–  Can use dynamic bindings!
•  Artisan!
–  Can create bindings programmatically!
•  Journeyman!
–  Can create static bindings!
–  Can use bindings programmatically!
Quote of the Day
Automagic binding
•  Databindings.cpx!
•  xxPagedef.xml!
•  web.xml change!
Binding screen
Bindings
•  Value!
–  Attribute Value!
–  List!
–  Tree!
–  Button (boolean)!
–  Graph!
•  Action!
–  Action (built-in)!
–  Method action!
[email protected]
© Sten Vesterli 2014
2
Mastering Oracle ADF Bindings:
Advanced Techniques
Oracle OpenWorld 2014
Executables
• 
• 
• 
• 
• 
• 
• 
Iterator!
Method Iterator (custom methods)!
Variable!
Page (to template)!
Search Region!
Task Flow!
Multi Task Flow !
(unknown no. of regions)!
Log
Target URL -- http://127.0.0.1:7101/EmpDeptAppEmpDeptView-context-root/faces/untitled1.jsf
<oracle.adf.model> <BindingContext> <put> <[316]
Replacing: null with:
com_vesterli_demo_view_untitled1PageDef>
<oracle.adf.model> <DCExecutableBinding> <refreshIfNeeded>
<[317] Invoke refresh for :DeptView1Iterator>
<oracle.adf.model> <DCIteratorBinding> <refresh> <[318]
Executing and syncing on IteratorBinding.refresh
from :DeptView1Iterator>
<oracle.adf.model> <BindingContext> <put> <[319]
BindingContext.put non -dc / bc
entry( _app_def_name_key_EmpDeptServiceDataControl_,
com.vesterli.demo.view.DataBindings.cpx )>
ADF Lifecycle
Bindings at Runtime
•  Databindings.cpx!
–  BindingContext!
•  xxPagedef.xml!
–  BindingContainer!
•  Iterator!
–  DCIteratorBinding!
Log
<oracle.adf.model> <ViewObjectImpl> <buildQuery> <[375]
SELECT Dept.DEPTNO,
Dept.DNAME,
Dept.LOC
FROM DEPT Dept>
<oracle.adf.model> <ViewObjectImpl> <getPreparedStatement>
<[376] ViewObject:
[com.vesterli.demo.model.view.DeptView]EmpDeptService.Dept
View1 Created new QUERY statement>
<oracle.adf.model> <ViewObjectImpl>
<bindParametersForCollection> <[377] Bind params for
ViewObject:
[com.vesterli.demo.model.view.DeptView]EmpDeptService.Dept
View1>
…
<oracle.adf.model> <DCIteratorBinding>
<releaseDataInternal> <[381] Releasing iterator
binding:DeptView1Iterator>
Using Bindings
BindingContext bctx =
BindingContext.getCurrent();
BindingContainer bc =
bctx.getCurrentBindingsEntry();
[email protected]
© Sten Vesterli 2014
3
Mastering Oracle ADF Bindings:
Advanced Techniques
Oracle OpenWorld 2014
Attribute binding
AttributeBinding ab =
(AttributeBinding)bc.
getControlBinding("Dname");
•  Get with ab.getInputValue()
•  Set with ab.setInputValue()
Operations Binding
OperationBinding ob =
bc.getOperationBinding("OprName");
ob.execute();
•  To set parameters, first get parameter map!
–  getParamsMap()
•  Check for errors !
–  getErrors()
Component à Binding
Iterator Binding
DCBindingContainer dcb =
(DCBindingContainer)bc;
DCIteratorBinding iter =
(DCIteratorBinding)dcb.
findIteratorBinding("IterName");
•  To get one row!
–  getCurrentRow()
•  To get rowset!
–  getAllRowsInRange()!
•  I have a component where something
happened (e.g. a table)!
•  I want to work with the data on that
component!
•  So I need to get from the component
back to the binding!
Component à Binding
Dynamic Binding
•  Need handle to component (Binding
property)!
RichTable table1 = this.getTable1();
CollectionModel tableModel =
(CollectionModel)table1.getValue();
JUCtrlHierBinding treeBinding =
(JUCtrlHierBinding)tableModel.
getWrappedData();
DCIteratorBinding iter =
treeBinding.getDCIteratorBinding();
[email protected]
© Sten Vesterli 2014
I wonder
what this
one does?
4
Mastering Oracle ADF Bindings:
Advanced Techniques
Dynamic Page
<af:iterator id="i1" value="#{bindings.
EmpView1.attributesModel.attributes}”
var="column" rows="0">
<af:column headerText="#{column.label}”
id="c1”>
<af:dynamicComponent id="d2"
attributeModel="#{column}”
value="#{row.bindings[column.name].
inputValue}"/>
</af:column>
</af:iterator>
But now we’re free…
•  Since table will just loop over attributes,
we can make the <iterator> dynamic!
<iterator … DataControl=
"EmpDeptServiceDataControl"
id="${pageFlowScope.myBean.myIter}”
/>
•  $ instead of # to achieve eager (early)
evaluation!
•  Could also use dynamic Data Control!
Oracle OpenWorld 2014
Dynamic Binding
•  <AttrNames> is empty!
•  Otherwise normal binding!
Do you need this?
•  Dynamic bindings are rare!
•  They will be hard to maintain!
•  Question the use case!
–  Typically not necessary!
–  Users want “one system to end them all”
with enough flexibility that they never
have to speak to a programmer again!
–  Flexibility rarely used!
!
Creating a binding
• 
• 
• 
• 
• 
JUCtrlActionBinding!
JUCtrlAttrsBinding!
JUCtrlHierBinding!
JUCtrlListBinding!
… and many others!
Creating a List Binding
•  Start with JUMetaObjectManager!
–  getJUMom()!
–  getControlDefFactory!
•  From here, get a JUCtrlValueDef!
•  Set parameters in hashmap and init()!
•  Create JUCtrlListBinding from the def!
–  createControlBinding();!
•  Add to binding context!
–  addControlBinding();!
[email protected]
© Sten Vesterli 2014
5
Mastering Oracle ADF Bindings:
Advanced Techniques
Oracle OpenWorld 2014
Artisan Level!
•  Worked example by Eugene Fedorenko!
–  adfpractice-fedor.blogspot.com/2014/02/
dynamic-lov-binding.html!
You don’t need this
•  Or do you? !
–  Let’s discuss use cases!
More ADF
• 
• 
• 
• 
ADF EMG!
ODTUG!
ADF Mastery newsletter!
Win a free book!
–  Sign up at www.adfmastery.com!
Q&
A
Twitter: @stenvesterli
Blog: www.vesterli.com
Web: www.adfmastery.com
Email: [email protected]
[email protected]
© Sten Vesterli 2014
6

Untitled - Farnell