Trying to set control hints in entity object attributes in generic classes

Question

Hi, how are you? I work for a project , that uses JDeveloper 10.1.3.3 version and I am assigned to solve some problems in the part that is associated with ADF Business Components—Model—of the application. The question is how could I implement generic functionality in CustomEntityImpl and there I am to assign some control hint values to some attributes and then the entities that will extend this class will acquire this functionality in their attributes.
I send you some code I have in my mind in order to find out how to write something relevant to set control hints. I have searched in relevant api’s for AttributeHints and EntityDef but I did not find a solution to my problem. I’ve tried this code:
AttributeHints ah=new AttributeHints(new AttributeDef(RIBUTE_DISPLAY_HINT_HIDE ) );
but it does not work. How could I set this value – to hide one attribute whenever it exists in my entities , setting it once in my CustomEntityImpl class?
I’ve read the whole tutorial ADF Business Components For Forms 4GL Developers but I did not find a solution to my problem. Your help would be a gift to me. Thank you very much!
private String primary_key = "Id";
private final String dte_insert = "Dteinsert";
private final String dte_update = "Dteupdate";
private final String user_insert = "Usrinsert";
private final String user_update = "Usrupdate";
private final String afm = "Afm";
protected boolean findAttribute(String name) {
String[] list = this.getAttributeNames();
for (int i = 0; i < list.length; i++) {                       
if (name.equals(list))
return true;
return false;
protected void doDML(int operation, TransactionEvent transactionEvent) {
//Insert Operation
if (operation == DML_INSERT) {
//Add history column
if (findAttribute(dte_insert)) {
Date date = new Date((new Date()).getCurrentDate());
this.setAttribute(dte_insert, date);
//Update Operation
else if (operation == DML_UPDATE) {
//Add history column
if (findAttribute(dte_update)) {
Date date = new Date((new Date()).getCurrentDate());
this.setAttribute(dte_update, date);
//Delete Operation
else if (operation == DML_DELETE) {
//To DO
super.doDML(operation, transactionEvent);

Answer 1

I Suggest you set its Attribute on EOImpl, override doDML, and before call super.doDML set your Attribute. There is a special reason to set Attribute on beforeCommit?
Best Regards