Right, because the wrapper would be a JavaBean, not a Map. The gory details
behind the "." operator can be found in section A.3.4 Operators "[]" and "." of
the JSTL 1.0 Spec.
Quoting Roy Benjamin <[EMAIL PROTECTED]>:
> Very interesting, so wrapping would work, but you can't
> just expose a Bean property.
>
> I've switched to c-rt for now,
>
> Thanks!
>
> On Fri, 2004-03-26 at 10:35, Kris Schneider wrote:
> > Maps are treated differently than regular JavaBeans so that you can't
> access
> > bean properties. For example, every object has a bean property called
> "class",
> > but you won't get any output if you try ${map.class}. It's even more fun to
> try
> > and get at a map's "empty" property ;-). If all you're concerned with is
> > testing whether a map is empty or not, you can use ${not empty map}. If
> you
> > really need the size of the map, you could try the Unstandard taglib:
> >
> > http://jakarta.apache.org/taglibs/sandbox/doc/unstandard-doc/intro.html
> >
> > Or do something like create a wrapper bean for collections that exposes a
> "size"
> > property and delegates to the wrapped collection.
> >
> > Quoting Roy Benjamin <[EMAIL PROTECTED]>:
> >
> > > I am displaying the values in a TreeMap using forEach tag.
> > > However, I only want to do this if the map is not empty.
> > > I also need to display the count of entries in the map at
> > > the top of the page.
> > >
> > > In TreeMap, size/size() is not a Bean Property (no?) so I tried
> > > in-line subclassing to expose the property:
> > >
> > > <%
> > > TreeMap treeMap = new TreeMap() {
> > > public int getSize(){return size();}
> > > };
> > > pageContext.setAttribute("TableRows",treeMap);
> > > %>
> > >
> > > now much later I try:
> > >
> > > <TD>
> > > Search Results: <c:out value="${TableRows.size}"/> found.
> > > </TD>
> > >
> > > I could just count things as they are added to the map
> > > over a series of SQL queries, but it seemed to me this
> > > was the better solution.. only the EL expression is null.
> > >
> > > I'm sure I'm doing something wrong....
> > >
> > > Thanks
> > >
> > > Roy
--
Kris Schneider <mailto:[EMAIL PROTECTED]>
D.O.Tech <http://www.dotech.com/>
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