ADF

ADF
 

• Application development Framework
• end-end application framework to build web applications on Java EE standards
• Own libraries & components with jdeveloper

Jdeveloper

• IDE tool to develop ADF application
• database client 
• version control SVN, GIT
• embedded weblogic
• ADF Libraries
• server connection
• Windows
• Structure window
• properties

ADF Project

• Model(EJB, Hibernate, ADF BC). This contains any thing related to Database
  
• View Controller. This contains any thing related to View layer
  
• web.xml
• faces-config.xml
• adfc-config.xml
• trindad-config.xml

MVC Design Pattern

• Model(EJB, Hibernate, ADF BC)
• View(UI layer)
• Controller(navigation rule between pages)
• View & Controller gets required data from Model

 MVC in ADF

• Model
• Entity object - table
• View Object- Select query
  
• Application Module - Gate that controls which data goes to View layer
• View Controller
• Data control & Bindings
• View
  
• Page 

Entity Objects

• Alternate keys
• Add Business validation of type Unique Key
  
• Business Rules
• Define validations
• Attribute level
• Entity Level
• Attributes
• UI hints
• validation rules

View Object

• Appears in Data control pane
• Types
• Entity based
• Attribute level properties copied to View Object
• many view objects can be defined on one entity object
• Tuning
• All rows
• only upto X rows
• View Criteria
• Filter data of View Object & in AM data Model view object
• Searchable Page
• Data control -> view instance -> named criteria -> drag view criteria to page
• List of values popup
  
• SQL based
• View only page
• lovs
• Programmatic
• Create row at runtime
• Static List
• List of Values
• with just readonly view object
• with view criteria attached to lov view object
• Transient Attribute
• Accessors
• View objects instances associated to attributes
  

Application Module

• View instances & Attach view criteria to instances
•  Data source definition
• Runner

Association

• Link between two entities
• One can get employee details being in Department view & vice versa
• View link can be created based on Association

View Link

• Link between 2 view objects
•  

Java Code in Model/Entity

• Accessors, Create, Remove, doDML
• set value of an attribute on setter of other attribute
• set autosubmit to true on independent attribute
  
• Set partial trigger of dependent attribute to the independent attribute

Java code in View Layers

• VoRowImpl class
• Accessors similar to Entity object
• create & remove (source -> override)
  
• VoImpl
• View level
• Change where clause of view
• overide executeQueryForCollection
• this.setWhereClause("DEPARTMENT_ID=50");  //before super call
  

Java code in AM

1. It has all view instances that can be used in View layer
2. Add methods that can be called in View layer
• expose the method as client interface
•  override afterCommit  & afterRollback
  
• These will be used for complete application
• 
  
3. Add code applicable for complete application

Java code in View Layer

 

• ADFUtil Class
• getIterator
• executeOperation
• setAttributeinIterator,  getAttributeinIterator
• get/putInSession
• showErrorMessage
• showWarningMessage
• uploadFile
• getSqlDescription
• executeDML
• getFromSessionScope
• Scopes in ADF
• Application, Session, Page Flow, Request, Backbean, view, None

View Controller

• Page Structure
• view -> document -> form
• adf components are prefixed with af
• 2 pages with just buttons. Navigate to other page
• adfc-config.xml
• control flows

Task Flows

• Unbounded task flow
• pages & navigation
• Bounded taskflows
• page fragments & regions
• Has entry point
• With Train
• train
• train buttonbar
• add names to train in taskflow
• can be called from another bounded task flow
• security can be applied
• parameter can be sent from bounded task flow to bounded task flow
• Can implement transaction flow
• Bounded task flow can be component in train of another bounded task flow with train
•  

REST

• Create Model with AM -> add view to AM
• AM -> webservice -> REST ->add ->  adf-config.xml -> Release Versions -> add version
• AM -> webservice -> REST ->add ->  provide resource name & version
• The above steps will create RESTwebservice project & REST service descriptior xml in model 
• Run webservice project and test from postman
  
• <restURL>/version/resource
• conditions
• limit, offset
• q=departmentName=value or = value2
• &orderBy=<attribute>
• (q=departmentId<100) and (q=locationId<100)
•  like 'asdf*'
  
• content-type
• application/vnd.oracle.adf.resourceitem+json
• Custom method
• viewimpl.java ->add a method ->expose as client interface
• Rest  config file -> custom method -> enable the method
• there is bug, so add to page,  & copy method action element to rest config file
• invoking custom method from postman
• {
  "name": "",
  "parameters": [{"name","value"}]
  }
• content-type: application/vnd.oracle.adf.action+json
• Call REST webservice from other ADF Application
• utility method -> 2 methods for Get & POST using httpconnection for departments
  
• Jackson library to convert Json to Java class
• create Deparments & list<Departments> classes
  
• Create jspx page -> af:form properties -> advanced -> binding -> edit -> define bean
• in backing bean -> create methods to 
  
• set and get list<Departments>
• write method to call webservice & map output to the class using mapper class
  
• create table in adf form with required columns.  -> set value property of table & columns to bean-> getDepts method
•