The following comment has been added to this issue:
Author: fabrizio giustina
Created: Wed, 22 Sep 2004 8:24 AM
Body:
Date: 2004-07-22 14:39
Sender: nobody
Logged In: NO
unfortunately it is not working. I am using rc-1
Testcase:
testEL(org.displaytag.tags.ColumnPoolingTest): Caused an ERROR
null
java.lang.NullPointerException
at org.displaytag.model.Column.getValue(Column.java:103)
at
org.displaytag.model.Column.createChoppedAndLinkedValue(Column.ja
va:212)
at org.displaytag.model.Column.getOpenTag(Column.java:182)
at
org.displaytag.tags.TableTag.getTableBody(TableTag.java:1513)
at org.displaytag.tags.TableTag.getHTMLData(TableTag.java:1249)
at org.displaytag.tags.TableTag.doEndTag(TableTag.java:921)
at
org.apache.jsp.columnpooling$jsp._jspService(columnpooling$jsp.ja
va:286)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:10
7)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(Js
pServlet.java:201)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.ja
va:381)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.meterware.servletunit.InvocationContextImpl.service(Invocatio
nContextImpl.java:79)
at
com.meterware.servletunit.ServletUnitClient.newResponse(ServletUn
itClient.java:99)
at
com.meterware.httpunit.WebWindow.getResource(WebWindow.java:164)
at
com.meterware.httpunit.WebWindow.getSubframeResponse(WebWindow.ja
va:128)
at
com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:121)
at
com.meterware.httpunit.WebClient.getResponse(WebClient.java:112)
at
com.meterware.servletunit.ServletRunner.getResponse(ServletRunner
.java:122)
at
org.displaytag.tags.ColumnPoolingTest.doTest(ColumnPoolingTest.ja
va:45)
at
org.displaytag.test.DisplaytagCase.testEL(DisplaytagCase.java:77)
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View this comment:
http://jira.codehaus.org/browse/DISPL-11?page=comments#action_24412
---------------------------------------------------------------------
View the issue:
http://jira.codehaus.org/browse/DISPL-11
Here is an overview of the issue:
---------------------------------------------------------------------
Key: DISPL-11
Summary: Performance enhancements
Type: Improvement
Status: Unassigned
Priority: Major
Original Estimate: Unknown
Time Spent: Unknown
Remaining: Unknown
Project: DisplayTag
Components:
Tag Library
Versions:
1.0 RC2
Assignee:
Reporter: fabrizio giustina
Created: Wed, 22 Sep 2004 8:23 AM
Updated: Wed, 22 Sep 2004 8:24 AM
Description:
>From dev ml (Todd Benge)
There are several steps we are taking to improve the overall
system performance, one of which was to look at the displaytag source
code. In doing so, we were able to make a couple of significant
changes that have made a major impact on overall performance. So far
the changes we've made have not had any impact on functionality but we
do not use the el tags or velocity templates. We've tagged all of the
changes in the source files with my name (Todd) so that you can
evaluate the changes. The attached jar file includes the source files
changed as well as the Borland Optimizeit profiles taken before and
after the work was completed. You should see that the processing time
spent in the tag libraries and main JSP is significantly reduced.
This is mostly due to caching of previously reflected methods and the
removal of the iteration in the doAfterBody of the TableTag. If the
changes look reasonable, we'd be happy to commit the changes back to
the community. The two authors of the changes are Todd Benge and Matt
Green.
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