Oracle ADF VO old value problem.

Question

I have a web application developed Oracle ADF and Jdev 11.1.2.3.0. I have a button in my page which name is "Complaint". When user click the button, it invokes a method on ApplicationModuleImpl via a ManagedBean.
public void clearAndExecute(){
getCardView1().clearCache();
getUser1View1().clearCache();
getReplyView1().clearCache();
getCardView1().executeQuery();
getUser1View1().executeQuery();
getReplyView1().executeQuery();
public void increaseComplaint(BigDecimal cardID) {
clearAndExecute();
ViewObjectImpl vo = getCardView1();
Integer complaintCount;
BigDecimal userID=null;
Row[] rows = vo.findByKey(new Key(new Object[] { cardID }),1);
if (rows != null && rows.length > 0) {
Row row = rows[0];
complaintCount = (Integer) row.getAttribute("CardComplaintcount");
++complaintCount;
userID=(BigDecimal) row.getAttribute("UserUserid");
row.setAttribute("CardComplaintcount", complaintCount);
clearAndExecute();
this.getDBTransaction().commit();
clearAndExecute();
This method gets the "CardComplaintcount" column value in CardView1 and increase +1 it. and commit Transaction. My method runs normally but i have an issue.
For example scenerio ; Initially, In column "CardComplaintcount" value is 5. And i open two web page different browser. Then, i clicked "Complaint button" 3 times. I looked at the mysql db, its value 8 it is OK. And then, i turn to other opened browser and clicked "Complaint" button one time and looked at the mysql db, and size is 6. it must be 8+1=9. It is likely refresh problem or not, How can handle this problem.
Edited by: ramonypp on 27.Kas.2012 18:29

Answer 1

Kdario, i know that, i can do a jdbcl call and get last result from DB. But, What is here ADF business components, Entities and View Objects, Rows. More jdbc call can make our application performance down. Due to this reason, i'm trying to solve this problem with entity objects or view objects.
I did some news. Overriding the my entity object's lock method like below;
try {
super.lock();
catch (RowInconsistentException ex) {
this.refresh(REFRESH_WITH_DB_FORGET_CHANGES | REFRESH_CONTAINEES);
super.lock();
When it encounter with Optimistic lock exception (RowInconsistentException ) fetchs the new results from db, and refresh the entity. But i have only problem too. When i invoke the "ComplaintCount" button in other page, first click it retrives last value from DB, and second click, it counts complaintcount +1. I dont know Why first time id doesnt count +1,