JDev 10.1.3.4: How to properly loop through the rows of a VO?

Question

Hi,
This is a newbie question. Using JDeveloper 10.1.3.4 I am trying to loop through the rows of a view object. I am sure that the VO returns the following rows in that order:
200809
200902
200906If I use this code (where termsOpen is the VO instance):
while (termsOpen.hasNext()) {
   System.out.println(termsOpen.getCurrentRow().getAttribute("Term"));
}it proves to be an endless loop and I get "200809" printed on the console endlessly. The API says that hasNext() "does not move the current row". A book says that the pointer initially is at row 0. I wonder why it prints the first row. So the code is changed to:
while (termsOpen.hasNext()) {
   Row currRow = termsOpen.next();
   System.out.println(currRow.getAttribute("Term"));
}But now I get only the last two rows printed on the console, and do not get to see the first row:
200902
200906What's wrong?
Thanks for helping!
Newman

Answer 1

Hi, Branislav,
Thank you for the suggestion.
I tried that also. When the code is
while (termsOpen.hasNext()) {
   System.out.println(termsOpen.getCurrentRow().getAttribute("Term"));
   termsOpen.next();
}I get only the first two rows and last row is dropped:
200809
200902To get all the three row, I end up using this code:
System.out.println(termsOpen.first().getAttribute("Term"));
while (termsOpen.hasNext()) {
   Row currRow = termsOpen.next();
   System.out.println(currRow.getAttribute("Term"));
}But that shouldn't be the way of doing the work. If I use a block of 50 lines of code to process each row, the code will have to be written once before the while loop and another time inside the while loop.
The book which says that the pointer starts at the row slot before the first row is found on the internet, on p.469. It makes sense to me that the pointer starts at row 0. But unfortunately the actual copy of JDev 10.1.3.4 I am using behaves otherwise.
Newman