display:table pagesize="xx" attrinute fail with multiple tables in same JSP
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Key: DISPL-334
URL: http://jira.codehaus.org/browse/DISPL-334
Project: DisplayTag
Type: Bug
Components: Tag Library
Versions: 1.1
Reporter: Knut Erik Ballestad
Fix For: 1.1.1
_display:table name="requestScope.purchaseItems_list" class="tab" pagesize="6"_
I have 2 tables underneath each other in a data mining-like web application.
The tables resides in different JSP fragment files that are included from a
main JSP page.
If the bottom table are sent an empty list, displaytag crashes (but only if the
pagesize attribute exist in the JSP).
- if the bottom list contains data, everything is OK
- if the bottom list JSP doesn't use the pagesize="x" attribute, everything is
OK
Example (Bottom list is empty, and pagesize="6"):
-results in this stack trace:
15:16:59,075 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.IndexOutOfBoundsException: fromIndex = -6
at java.util.SubList.<init>(AbstractList.java:703)
at java.util.RandomAccessSubList.<init>(AbstractList.java:861)
at java.util.AbstractList.subList(AbstractList.java:570)
at
org.displaytag.pagination.SmartListHelper.getListForPage(SmartListHelper.java:219)
at
org.displaytag.pagination.SmartListHelper.getListForCurrentPage(SmartListHelper.java:200)
at org.displaytag.tags.TableTag.setupViewableData(TableTag.java:1525)
at org.displaytag.tags.TableTag.doEndTag(TableTag.java:1198)
at
org.apache.jsp.list.PurchaseItems_jsp._jspService(org.apache.jsp.list.PurchaseItems_jsp:696)
>From debugging SmartListHelper:
line 166:
return (pageNumber - 1) * this.pageSize;
line 217-219:
int firstIndex = getFirstIndexForPage(pageNumber);
int lastIndex = getLastIndexForPage(pageNumber);
return this.fullList.subList(firstIndex, lastIndex + 1);
When line 217 call line 166, and there are no pages (pageNumber=0), the
returned index is (-1 * 'the defined pagesize from JSP'),
which results in the stack trace above
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