Accessing View Object Information from JSP

Question

Hi!
I know that my question it's a basic one, but I'm having some problems. Let me start by describing my problem.
I need to implement an navigation select box to one table (this table will be a result of a query). I'm "building" the select box with a <c:forEach> iterator. Well, the problem starts where:
<%-- Makes a kind of Math.ceil(double) --%>
<c:set var="resultInDouble" value="${(binding.estimatedRowCount-1)/binding.rangeSize +1}" />
<c:set var="resultInDoubleZero" value="${resultInDouble - resultInDouble % 1}"/>
<fmt:formatNumber value="${resultInDoubleZero}" var="resultInt" pattern="0"/>
<select name="select" >
<c:forEach var="SelectBoxItems" begin="1" end="${resultInt}">
</c:forEach>
</select>
As you can see, first I need to calculate the number of "<option> ... </option" I need to put on the select box, and I do that by making an ceil method emulation (for those that doesn't know ceil, it rounds up a division, like 7/3 = 3). To do this ceil I need to call the estimatedRowCount. And that's the problem: when I call estimatedRowCount, the query that I previous made is repeated to calculate the numberOfRows returned. As you can imagine, I don't want to re-execute the query, but only get the number of all rows.
One solution that I thought, was in the Java Controller File for this page, use the method associated with the ViewObject getRowCount(), that doesn't re-execute the query. With this idea, I would construct the select box with java code, something like this:
<select name="select" >
<%
int ceilResult = Math.ceil(viewObject.getRowCount(),viewObject.getRangeSize());
for (i = 0;i<ceilResult;i++) {
%>
<option> ... </option>
<% } %>
</select>
But with this idea, I hanged with a problem: "How do I in JSP, can "see" the view object?".
Basically i only need a small example source, that in Java Controller File can get the iterator to make the return of the ViewObject getRowCount method.
Does anyone have any idea how to solve this problem, or maybe a new approach ?
Tiago Soares
P.S. I've already tried some others (attempts of) solutions, but they didn't worked. I didn't posted their description, because I was afraid that anyone would read this post, because of the size of it. :)

Answer 1

First of all, please stop reposting this question. Post it once and someone will probably reply to it.
Secondly, you can expose methods of a view object through it's dialog (I think) or you will have to do it in the Application Module.. But it may suit your need better to create a transient column on you VO (one that exists only in memory) and store your value in that.