ADF/BC4J fetches all rows, should fetch only if needed

Question

Hello,
I'm using JDeveloper 10.1.2. Technologies are Struts, ADF and BC4J.
I have a problem with viewObjects. I have created components from database tables. I'm fetching in appModuleImpl:
ViewObjImpl impl = getObjectViewImpl();
impl.setWhereClause("id=101");
impl.executeQuery();Problem is that when page is loaded, it fetches ALL ROWS (80 000 rows)from table and then makes another query to fetch group above. I want only fetch rows that i decide to fetch. My application is in immediate mode. Couple of iterators has fetch range -1 and couple 10.
I have debugged that the first ALL ROWS fetch is made somewhere out of my code.
What i'm doing wrong? Any feature development hints are welcome also.
Thank you advance!
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Answer 1

hello
First of all thank you for commenting on my timeout post
I think i have a solution for you problem.
If i understand you correctly, when the page is loaded, you only want the framework to only fetch one page worth of rows, look yahoo and google. Then when you select another page, you want the other records to be fetch.
public void executeQuery() {
setAccessMode(RowSet.RANGE_PAGING); //shall do the trick
super.executeQuery();
Djbo.debugoutput=console
SELECT * FROM (SELECT /*+ FIRST_ROWS */ IQ.*, ROWNUM AS Z_R_N FROM (select * from emp) IQ WHERE ROWNUM < :0) WHERE Z_R_N > :1
[253] Bind params for ViewObject: ViewObj1
[254] setting rownum query between (0, 4)
As shown above, the query is designed to only fetch 4 rows and this is managed by manipulating the ROWNUM.
When you run it the page will only display RANGE_PAGE only execpt of the 80,000 and your first page will run very fast
This will cause a database hit each time you select another page! If you ask the framework designer, i bet, they shall tell you we are avoiding database hits with this. My answer to them, who would go about navigation all pages anyway!
Kindly comment if the code above solved your issue or not
Ammar Sajdi
Amman - Jordan