[General TagLib question] Custom TagLib storing value in PageContext/session and reference by Standard JSTL?

[Konrad <kh...@yahoo.com>]

Hello.

In my custom taglib's doStartTag() method, I stored a
value in the session, as follows:

CustomTag
=========
public void doStartTag() {
   
  
this.pageContext.getSession().setAttribute("endIdx",new
Integer(9));
}


I am trying to reference that value in JSTL's
<c:forEach> tag, as in the following .jsp snippet:


test.jsp
========

<my:custom/>  <!-- just calls/executes the CustomTag
-->

<c:forEach var="card" items="${cards}" begin="0"
end="${endIdx}">
   <c:out value="${card.name}"/>
</c:forEach>


Basically, above, I am trying to dynamically set the
ending index of the forEach tag, based on the value
calculated in CustomTag.

However, forEach's "end" attribute is resolving to 0
instead of 9, which was set in the CustomTag's
doStartTag() method.

Is there a way to ensure that CustomTag executes "in
advance" such that forEach's "end" tag can correctly
reference the value set in the session?

Thank you.

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