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The tags will display an empty image
only if the value is a null. Indexing is very much of a java language n hence
the jsp gives out an exception during the runtime if the index is
erraneous.
Hope i'd understood the problem
clearly....
----- Original Message -----
Sent: Thursday, June 15, 2006 12:35
AM
Subject: [displaytag-user] JspException
trying to reference empty List via 0index
Hi everyone,
First off, I am using displaytag 1.1. I am getting the following exception when I try to access an empty index inside a list for my column display
javax.servlet.jsp.JspException: Index: 0, Size: 0
at org.displaytag.render.TableWriterTemplate.writeTable(TableWriterTemplate.java:161)
at org.displaytag.render.HtmlTableWriter.writeTable(HtmlTableWriter.java:643)
at org.displaytag.tags.TableTag.writeHTMLData(TableTag.java:1549)
at org.displaytag.tags.TableTag.doEndTag(TableTag.java:1218)
My bean has an infos list (when empty causes the above exception)
--- Here is my a sniplet of my JSP using the display tag ---
<display:table name="results" id="row" >
<display:column property="name" escapeXml="true" title="name" />
...
<display:column property="infos[0].property1" escapeXml="true" title="property 1"/>
<display:column property="infos[0].subProperty2" escapeXml="true"
title="property 2"/>
...
</display:table>
--- I am able to get around it with the following modified JSP,
but I think the tag should display empty strings in this
scenario instead of throwing a JspException ---
...
<display:column escapeXml="true" title="property 1">
<c:if test='${row.info[0] != null}'>
<c:out value="${row.info[0].property1}"/>
</c:if>
</display:column><display:column escapeXml="true" title="property 2">
<c:if test='${row.info[0] != null}'>
<c:out value="${row.info[0].property2}"/>
</c:if>
</display:column>
...
Is this a bug in the display:column tag lib or maybe JSTL or am I missing something?
Regards,
Neon
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