Nested tag Exception when using nested:define

[arvind ramaswami <ar...@yahoo.com>]

We are not using Struts fraemwork as such but
something very close to it. (No Action Forms, but a
map file similar to Struts-config) 

Environment is Tomcat 4.1.12, with
nested-tags.jar(compiled classes as of 04/08/2002)
and struts.jar (1.1 RC).

I am wondering if I am using an old version of the
nested-tags jar file. If so, is there a newer version
that works with Struts1.1 jar ?

I am giving you the code below. It blows up as soon as
it hits the first <nested:define> tag. 

I hope the code is ok .

In the calling page which starts the recusrion :

<c:choose>
        <c:when
test="${!documentList.treeNode.hasChildren}">
                There are no documents.
            </div>
        </c:when>

        <c:otherwise>
        <nested:root name="documentList">
          <nested:nest property="treeNode">
             <jsp:include page="docnode.jsp" />
          </nested:nest>
        </nested:root>
        </c:otherwise>
    </c:choose>

Here's the resursive docnode.jsp (the main part that
breaks) : 

<nested:root>

    <nested:equal property="showChildren"
value="true">
         <nested:define id="imgState"
value="open18x16.gif" />
    </nested:equal>
        <!--html for the prent row-->

   <nested:equal property="hasChildren" value="true">
         <nested:iterate property="childCollection">
            <jsp:include page="docnode.jsp" />
         </nested:iterate>
   </nested:equal>
</nested:root>


The following exception is thrown :

java.lang.NullPointerException
        at
org.apache.struts.taglib.nested.NestedPropertyHelper.getNestedProperty(NestedPropertyHelper.java:173)
        at
org.apache.struts.taglib.nested.NestedPropertyHelper.getNestedProperty(NestedPropertyHelper.java:195)
        at
org.apache.struts.taglib.nested.NestedPropertyHelper.setNestedProperties(NestedPropertyHelper.java:242)
        at
org.apache.struts.taglib.nested.bean.NestedDefineTag.doStartTag(NestedDefineTag.java:89)
        at
org.apache.jsp.docnode_jsp._jspService(docnode_jsp.java:119)



your help is appreciated

thanks
arvind


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