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Showing posts with label Conditinal. Show all posts
Showing posts with label Conditinal. Show all posts

Tuesday 3 February 2015

ADF Basics: Set multiple LOV's on attribute and conditionally switch using LOV Switcher

This post is about a very basic and common use case
Suppose we have to show different values in our List depending on some condition but all values must be stored in same attribute so for this type of requirement ADF BC framework provides concept of LOV Switcher
Framework allows us to define multiple LOV on same attribute, I hope you all know about defining LOV(List of Values) so move ahead and see how to use lov switcher

 See the implementation part-
  • Created a Fusion Web Application and a viewObject to show LOV on viewport (Used dual to create view object for this example , you can use use your own)

  • Created 2 more viewObject to apply LOV on first viewObject's attribute, One ViewObject is for Departments and other one is for Employees

  • Open dual viewObject select LovAppl attribute and goto ListOfValues tab and add both LOV
    For Department - DepartmentId is List Attribute and DepartmentName will be shown on UI

  • For Employees- EmployeeId is List Attribute and FirstName,LastName will be shown on UI

  • Now click on green plus icon of List Of Values Switcher and add a transient attribute , this will be further used to switch lov on base of some condition

  • So created LovSwitcher attribute , and remember this switcher attribute value should be one of the LOV Name that are applied on attribute.
    Here i am using a condition - if LovType attribute of Dual viewObject is 'D' the LovAppl should show Departments Lov and if it is 'E' then LovAppl should show Employees Lov
    For this i have written expression for lov switcher attribute
    LovType=='D' ? 'LOV_LovAppl' : LovType=='E' ? 'LOV_LovAppl1' : null

  • Now run Application Module and check it

Thanks , Happy Learning :)

Monday 23 September 2013

Dynamically enable or disable items of ADF bound List (af:selectOneChoice) -Oracle ADF

Hello All,
This tutorial is about a requirement of conditionally enabling/disabling items (values) of adf bound List (af:selectOneChoice) component
here i am taking reference of default HR Schema (Departments and Location table )

See the steps-
  • Create a Fusion Web Application and business components using both tables
  •  Now create List of Values (Lov) on locationId of departments VO from Location VO
  • Set List Attribute to LocationId and for UI city will be shown
  • Now Drag Departments VO from Data Control on page as a form
  •  Select LocationId list field and delete f:selectItems from it, now drag af:selectItem as child of af:selectOneChoice and surround it with af:forEach 

  • Add tree binding of Location ViewObject to page bindings in order to populate list items using forEach
  •  Now select af:forEach and set its property and variable name, as we have to iterate through Location VO for list items
  •  Again select af:selectItem and set its value and label property using forEach variable's  
  • Now run your application, and see that list box is ready with values
  • Now we have to disable its values as a condition basis, i have written an Expression on af:selectItem's disabled property

  • I have written condition for DepartmentId 100 and 110, see in source of page

  • <af:selectOneChoice value="#{bindings.LocationId.inputValue}" label="#{bindings.LocationId.label}"
                                            shortDesc="#{bindings.LocationId.hints.tooltip}" id="soc1"
                            <af:forEach items="#{bindings.Locations1.rangeSet}" var="list">
                                <af:selectItem label="#{list.City}" id="si1" value="#{list.LocationId}"
                                               disabled="#{ (bindings.DepartmentId.inputValue==100 and (list.LocationId==1000 || list.LocationId==1300)) || (bindings.DepartmentId.inputValue==110 and (list.LocationId==1500 || list.LocationId==1600 || list.LocationId==1700 || list.LocationId==1800 || list.LocationId==1900))}"/>

  • Now value given in Expression for Location Id will be disabled for given Department
  • Run your page and select DepartmentId 100 and 110 to see disabled list items

 Download Sample App Cheers :-)

Wednesday 18 September 2013

Using af:switcher in ADF Faces to dynamically render page components

Hello all,,
Sometimes we need to display page components on a condition basis , this can be achieved in adf using af:switcher component
Normally switcher component is a collection of multiple facets and on a given condition it decides that which facet should be rendered.

How to use af:switcher- see the steps

  • Create a Fusion web application and create business components using Departments and Employees table (HR Schema)
  •  Now create a page in view Controller and drop a switcher component from component palette
  • Switcher is pure server side component so it doesn't have any client representation, so next move is to add facets in af:switcher, to add facets in switcher,
    just right click--insert inside af:switcher-- facet

  • As in this tutorial i am going to show 2 tables(Departments U& Employees) so added 2 facets in af:switcher

  • Now time to drop tables in corresponding facets, Employees Table in Emp, Departments Table in Dept
  •  Now i have created a static List that has values D for Departments and E for Employees, when user selects D the Departments table will be shown and for E Employees table will be shown

  • to do this select af:switcher and go to FacetName property and open expression builder to write conditional expression
  •  Now run this page and select values in list to see- how switcher works

  Download Sample App Cheers :-)

Tuesday 25 June 2013

Conditional Execution of Model (EO) level Validation- Oracle ADF

You all know about ADF model level validation , we can apply variety of validation on model (Entity Object), as for length, compare, key, regular expression, script and unique key etc.

I am not going to describe whole process for model layer validation, for detailed tutorial on EO level validation see -Dynamic (parameterize) model level validation using message token
Now see how we can execute these validation conditionally -

  • When we apply unique key validation on Entity Object- this window appears-
  • Now go to Validation Execution and write your condition in given box for that you want to execute validation

  • Now go to Failure Handling tab and write your failure handling message, and you are done

  • Now run your application and see how validation executes for your condition
  • this functionality is really helpful and sometimes avoids writing lot of managed bean code