ADF

Application Module

• Expose view instances to UI/View layer.
• Assign view criteria to view instances
• Java classes
• Configuration 
• Datasource that is used when the application is deployed to weblogic server
• Define pool configuration
• Run and test the Application module
• Java
• It has all view object instances exposed to View Layer
• Create your own business function and expose to view layer
• Override afterCommit & afterCommit methods
•  

Association

• Connection/Link between two entities

View Link

•  Link between two View Objects
• It can be defined on view attributes OR on top of Association defined at entity level
• 
  

ADF Logger
https://www.youtube.com/watch?v=o-2r-Max3II
http://tinyurl.com/adf-logging

• System.out.println
• You have to remember to remove it
• no granularity
• goes only to one place
• It is meant for appln user and not for developer/admin
• thin Wrapper on top of java.util.logging
• private Static Logger logger = Logger.createADFLogger(<classname>);
  logger.info("information");

View Objects

• Entity Based
• SQL Query based
• Static list
• Programmatic
• VO which is not based on query. One can define VO attributes and insert rows at runtime
• Generate javaimpl & javarowimpl  
• bind the ui elements to backing bean
• 
  

View Criteria

1. Filtering the main view data
2. Search page
3. List of Values input - > assign criteria

Java Code ->  Source -> override methods

1. viewImpl.java
1. executeQueryForCollection() -> set bind variable before the super method
2. change sql
2. viewRowImpl.java  (like entity object)
1. Create()
2. Remove()

View Layer

• Application
• Session
• PageFlow 
• Request
• Backing bean
• view
• none

LOV Types:

• Single Selection
• ADF Select One Choice
• ADF Select One Listbox
• ADF Select One Radio
• ADF Select Boolean Checkbox 
• List Of Values
• ADF LOV Input
• ADF LOV Choice List

Client Side LOV

• Create a new VO Attribute say InvoiceCurrencyCodeCsLOV
• Add LOV as ComboLOV to the newly created attribute
• Add custom attribute ListType and set value to inputSearch
• Also, add LOVResource property and set values
• Drag and drop Switcher & two facets within it
• Drag the new attribute as LOV onto the page within Switcher facet. Delete the code generated as we use the wrapper API.
• Infplace of deleted code, Drag FinClientSideLOV onto one facet and provide following properties
• BusinessObject
• LOV Binding
• Value 
• valueAttribute
• Drag regular LOV code onto other facet
• Optin stategy
• Profile FUN_CLIENT_LOV_ENABLED to yes
• To disable for AP incase of any errors, create Lookup Type 'AP_NEW_FEATURES' with lookupcode 'AP_DISABLE_CLIENTSIDE_LOV'

View Layer
 Table & Panel Collection

• Make the table stretchable & with same width equally for each column
• Table Properties -> Appearance -> Column Stretching ->Multiple
• Appearances -> Set the width to 33% for all columns 
• Display icon to clear table filters
• Create a new column & set width as 14, rowHeader to True
• Show index(rownum) for the rows in the header column
• Insert output text under the rowHeader column
• set the value property to #{row.index}
• Table -> context menu
• Table -> insert ContextMenu facet
• insert popup -> Menu -> Menu item
• Table -> Detail Stamp
• Drag the child table
• Table properties -> Behavior ->  RowDisclosureListner -> associate backing bean methold
  public void rowListner(RowDisclosureEvent rowDisclosureEvent){
  <<logic here>>
  }
• Panel Collection features
• Detach -> to show table in full screen
• Control table filter
• Control the Visible/hide columns 
• Sorting & reorder columns
• Column selection multiple -> Freeze & Wrap features can be used
• Features OFF -> To disable certain features

REST

How to invoke Exposed REST service

Validator

• Custom Validation at EO level
• EO-> Business Rules-> Attribute level or entity level -> new validator -> method -> error message in failure handling tab 
• java impl -> write the code in generated method -> the method should return true or false.

Converter

• Store data in database in specific format but user should see it and enter it in different format.
• Create a java class implementing javax.faces.convert.Converter
• The interface has 2 methods getAsObject & getAsString. First one is to set the value & second one for getting
• public Object getAsObject(FacesContext facesContext, UIComponent uIComponent, String str){
  if (str.length!=10)
  {
  FacesMessage message = new FacesMessage("incorrect length");
  message.setSeverity(FacesMessage.SEVERITY_ERROR);
  throw new ConverterException(message);
  }
  return "+91"+substr(str,1,11);
  }
• public Object getAsString(FacesContext facesContext, UIComponent uIComponent, Object obj){
  String value = String.valueOf(obj);
  return "0"+substr(str,2,12);
  }
• Register the class with faces-config -> Converters
• How to apply converter to UI field
• Input text item -> insert converter -> select the registered converter
•  

BLOB - Uploading/downloading in ADF applications

• Drag af:InputFile to toolbar
• af:InputFile -> Value Change Listner -> add bean  method -> uploadImage
  public void uploadImage(ValueChangeEvent valueChangeEvent){
  UploadFile file = (UploadFile) valueChangeEvent.getNewValue()
  BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingEntry();
  DCIteratorBinding iter = () bindings.get("iteratorname");
  iter.getCurrentRow.setattribute("empimage", new BlobDomainForInputStream(file.getInputStream));
• private BlobDomain newBlobDomainForInputStream(InputStream in){
  BlobDomain b = new BlobDomain();
  OutputStream o = b.getBinaryOutputStream();
  writeInputStreamtoOutputStream(i,o);
  }
• private void writeInputStreamtoOutputStream(InputStream i, OutputStream o){i.close();
  byte[] buffer = new byte[8192];
  int bytesRead = 0;
  while ((byteRead=in.read(buffer,0,8192))!=-1) {
  out.write(buffer,0,byteRead);
  }

UI Components

•  Panel box
• Add content with a label/title
• Has toolbar facet
• It has DisclosureListner property for programatic control
• Key properties
• maximize property to show/hide the maximize icon
• showDisclosure Property
• Disclosed property
• Panel Group layout
• Layout property to select Vertical vs Horizontal
• Valign property

Listners

•  LOV
• ValueChangeListner
• LaunchPopupListner -> before popup is launched
• ReturnPopupListner ->
• TableSelection
• SelectionListner
• Popup
• PopupFetchListner -> just before popup opens
• PopupCancelListner ->

Classic Session Based Authentication: 

• Client authenticates with server using user/passwd for the first time
• Server creates a session and returns token
• Client stores the token in cookie and sends the token in all subsequent requests.

REST APIs

• REST is stateless - Server doesn't save any data that persists across requests.
• Session based authentication doesn't work
• Basic Auth(Credentials are sent in header for every request)
• Client authenticates with server using user/passwd in every request.
• Username & password is sent as part of request header in specific format
• username:password and Base64 encode 
• Authorization: Basic <encoded string>
•  On server side-> system does base64 decoding
• Encode string is not secure. Hence, send it over https protocol
• Encoding is to make string HTTP compatible
• Advantages
• Simple, stateless & supported by all browsers
• Disadvantages
• Requires https
• subject to replay attacks
• logout is tricky(browser caching)
• Digest access authentication
• Encrypts and sends a secret
• Asymmetric cryptography
• public-private key cryptography
• OAuth 
• It is meant for Authorization
• It is meant for service to authorize another service
•  
• JSON web tokens

Tuning and control weblogic memory

• Jdev -> tools-> preferences-> file types-> default editor -> source
• Jdev -> tools-> preferences->Code editor -> Save actions -> delete the build project on save option
• Increase memory allocation for jdev editor
• OS location where Jdev is installed -> jdeveloper -> ide -> bin ->  ide.conf -> add VM option 
• Increase memory allocation for embedded weblogic server
• help -> about -> properties -> configuration area property -> get os folder name -> DefaultDomain -> bin -> setDomainEnv.cmd ->

Shared Application Module

1. Create custom application with one module
2. Create all ADF BC components
3. Define datasource in application module
4. Model project -> generate ADF library jar file
5. Add the jar to main ADF application