Re: tag file recursivity problem
Hi,
It should be available in the next Tomcat release (in fact it was
included in a not-released Tomcat 6.0.15)
No idea when the next GA release be available.
Regards,
Lucas
On Jan 8, 2008 12:18 PM, Jair da Silva Ferreira Jr [EMAIL PROTECTED] wrote:
Hi,
Thank you very much for your reply.
Is this fix going to be available in the next Tomcat version? Do you
know when the next version will be released?
Thank you very much.
Sincerely,
Jair Jr
Lucas Galfaso escreveu:
Hi,
This is a known issue is Tomcat 6.0.14, it was reported using
http://issues.apache.org/bugzilla/show_bug.cgi?id=42693 and it is
fixed in the trunk.
Regards,
lg
On Jan 6, 2008 1:50 PM, Jair da Silva Ferreira Jr [EMAIL PROTECTED] wrote:
Hi,
I am experiencing a problem with recursivity in tag files in tomcat
6.0.14. I developed a simple tag file to show you the problem.
Here is my tag file:
%@ tag body-content=empty %
%@ taglib uri=http://java.sun.com/jsp/jstl/core; prefix=c%
%@ taglib prefix=t tagdir=/WEB-INF/tags %
%@ attribute name=number required=true type=java.lang.Integer %
c:choose
c:when test=${number==0 || number==1}1/c:when
c:otherwise${number}*t:factorial
number=${number-1}//c:otherwise
/c:choose
The tag file is pretty simple. When called from a jsp file, the tag
outputs how the factorial of any given number is calculated, but it
doen't actually calculate the factorial result. For example: if the
number paramenter is 5, the tag will output 5*4*3*2*1.
Here is the portion of the jsp file that calls the tag:
c:if test=${! empty param.number}
Result: t:factorial number=${param.number}/
/c:if
The problem is that nothing is displayed when the tag is called form
a jsp file. It happens as if the tag is not being called at all or as if
it is an empty tag file.
After some work I found out the problem. Jasper is not correctly
converting my recursive tag file to java code. The resulting java file
found in tomcat's work directory has an empty doTag method. Here is the
doTag method:
public void doTag() throws JspException, java.io.IOException {
}
I've checked all tomcat logs and couldn't find any jasper error
message.
I've run the same web application in two different systems and the
problem only happens in system 2. Here is the configuration:
System 1 (development machine) (problem does not happen):
- OS: Windows XP sp2
- Hardware: AMD Athlon XP 2400+ (2.03 GHz) (1,5 GB RAM)
- Java (as stated by java -version command):
java version 1.6.0_03
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Client VM (build 1.6.0_03-b05, mixed mode,
sharing)
- Tomcat version: 6.0.14 (.zip download package)
System 2 (production machine) (problem happens):
- OS: Ubuntu linux 7.10 (codename gutsy)
- Hardware: HP Tower Computer ProLiant ML350 G5, Intel(R)
Xeon(R) CPU 5120 @ 1.86GHz, 4 GB RAM
- Java (as stated by java -version command):
java version 1.6.0_03
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Server VM (build 1.6.0_03-b05, mixed mode)
- Tomcat version: 6.0.14 (.tar.gz download package)
I am sending you my factorial example web application. The file is
recursive-tag.war. The application only has 2 files: index.jsp and
factorial.tag.
I am also sending you 2 jasper generated .java files extracted from
the tomcat work directory. system1_factorial_tag.java is generated in
the system 1 configuration and system2_factorial_tag.java is generated
in the system 2 configuration. Please, notice that the doTag method is
empty in system2_factorial_tag.java.
Please, can anyone help me with this problem? Am I doing something
wrong?
Thank you very much.
Sincerely,
Jair Jr
package org.apache.jsp.tag.web;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
public final class factorial_tag
extends javax.servlet.jsp.tagext.SimpleTagSupport
implements org.apache.jasper.runtime.JspSourceDependent {
private static final JspFactory _jspxFactory =
JspFactory.getDefaultFactory();
private static java.util.List _jspx_dependants;
private JspContext jspContext;
private java.io.Writer _jspx_sout;
private org.apache.jasper.runtime.TagHandlerPool
_005fjspx_005ftagPool_005fc_005fchoose;
private org.apache.jasper.runtime.TagHandlerPool
_005fjspx_005ftagPool_005fc_005fwhen_005ftest;
private org.apache.jasper.runtime.TagHandlerPool
_005fjspx_005ftagPool_005fc_005fotherwise;
private javax.el.ExpressionFactory _el_expressionfactory;
private org.apache.AnnotationProcessor
Re: tag file recursivity problem
Hi,
This is a known issue is Tomcat 6.0.14, it was reported using
http://issues.apache.org/bugzilla/show_bug.cgi?id=42693 and it is
fixed in the trunk.
Regards,
lg
On Jan 6, 2008 1:50 PM, Jair da Silva Ferreira Jr [EMAIL PROTECTED] wrote:
Hi,
I am experiencing a problem with recursivity in tag files in tomcat
6.0.14. I developed a simple tag file to show you the problem.
Here is my tag file:
%@ tag body-content=empty %
%@ taglib uri=http://java.sun.com/jsp/jstl/core; prefix=c%
%@ taglib prefix=t tagdir=/WEB-INF/tags %
%@ attribute name=number required=true type=java.lang.Integer %
c:choose
c:when test=${number==0 || number==1}1/c:when
c:otherwise${number}*t:factorial number=${number-1}//c:otherwise
/c:choose
The tag file is pretty simple. When called from a jsp file, the tag
outputs how the factorial of any given number is calculated, but it
doen't actually calculate the factorial result. For example: if the
number paramenter is 5, the tag will output 5*4*3*2*1.
Here is the portion of the jsp file that calls the tag:
c:if test=${! empty param.number}
Result: t:factorial number=${param.number}/
/c:if
The problem is that nothing is displayed when the tag is called form
a jsp file. It happens as if the tag is not being called at all or as if
it is an empty tag file.
After some work I found out the problem. Jasper is not correctly
converting my recursive tag file to java code. The resulting java file
found in tomcat's work directory has an empty doTag method. Here is the
doTag method:
public void doTag() throws JspException, java.io.IOException {
}
I've checked all tomcat logs and couldn't find any jasper error message.
I've run the same web application in two different systems and the
problem only happens in system 2. Here is the configuration:
System 1 (development machine) (problem does not happen):
- OS: Windows XP sp2
- Hardware: AMD Athlon XP 2400+ (2.03 GHz) (1,5 GB RAM)
- Java (as stated by java -version command):
java version 1.6.0_03
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Client VM (build 1.6.0_03-b05, mixed mode,
sharing)
- Tomcat version: 6.0.14 (.zip download package)
System 2 (production machine) (problem happens):
- OS: Ubuntu linux 7.10 (codename gutsy)
- Hardware: HP Tower Computer ProLiant ML350 G5, Intel(R)
Xeon(R) CPU 5120 @ 1.86GHz, 4 GB RAM
- Java (as stated by java -version command):
java version 1.6.0_03
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Server VM (build 1.6.0_03-b05, mixed mode)
- Tomcat version: 6.0.14 (.tar.gz download package)
I am sending you my factorial example web application. The file is
recursive-tag.war. The application only has 2 files: index.jsp and
factorial.tag.
I am also sending you 2 jasper generated .java files extracted from
the tomcat work directory. system1_factorial_tag.java is generated in
the system 1 configuration and system2_factorial_tag.java is generated
in the system 2 configuration. Please, notice that the doTag method is
empty in system2_factorial_tag.java.
Please, can anyone help me with this problem? Am I doing something
wrong?
Thank you very much.
Sincerely,
Jair Jr
package org.apache.jsp.tag.web;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
public final class factorial_tag
extends javax.servlet.jsp.tagext.SimpleTagSupport
implements org.apache.jasper.runtime.JspSourceDependent {
private static final JspFactory _jspxFactory =
JspFactory.getDefaultFactory();
private static java.util.List _jspx_dependants;
private JspContext jspContext;
private java.io.Writer _jspx_sout;
private org.apache.jasper.runtime.TagHandlerPool
_005fjspx_005ftagPool_005fc_005fchoose;
private org.apache.jasper.runtime.TagHandlerPool
_005fjspx_005ftagPool_005fc_005fwhen_005ftest;
private org.apache.jasper.runtime.TagHandlerPool
_005fjspx_005ftagPool_005fc_005fotherwise;
private javax.el.ExpressionFactory _el_expressionfactory;
private org.apache.AnnotationProcessor _jsp_annotationprocessor;
public void setJspContext(JspContext ctx) {
super.setJspContext(ctx);
java.util.ArrayList _jspx_nested = null;
java.util.ArrayList _jspx_at_begin = null;
java.util.ArrayList _jspx_at_end = null;
this.jspContext = new org.apache.jasper.runtime.JspContextWrapper(ctx,
_jspx_nested, _jspx_at_begin, _jspx_at_end, null);
}
public JspContext getJspContext() {
return this.jspContext;
}
private java.lang.Integer number;
public java.lang.Integer getNumber() {
return this.number;
}
public void setNumber(java.lang.Integer number) {
this.number =
