subject:"Custom Tag Lib"

RE: Custom Tag Lib

2003-08-14 Thread Shawn Zernik

Mike:

Thanks so very much...  I saw their is a config option in the Jasper to
turn off tag pooling.  do you thing that would work too, of shouldI
impliment it in my source code.  I'm gonna take a look at it right now.

Shawn

-Original Message-
From: Mike Cherichetti (Renegade Internet)
[mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:28 PM
To: Tomcat Users List
Subject: RE: Custom Tag Lib


Shawn,

I ran into this problem as well when switching from 4.0 to 4.1.  I think it
has something to do with 4.1 pooling and re-using tag objects.  What I did
in all of my doStartTag(), doAfterBody(), etc... methods was manually call
release() to reset the data in the tags like so:

public int doStartTag() throws JspException
{
  try
  {
...
  }

  catch (Exception exception)
  {
throw new JspException(exception);
  }

  finally
  {
release();
  }

  return SKIP_BODY;
}

Have a nice day ...

Sincerely,

Mike Cherichetti
Renegade Internet
Internet Advertising Delivery Solutions
www.renegadeinternet.com
Phone (724) 658-6346
Fax (724) 658-6346


-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:56 PM
To: [EMAIL PROTECTED]
Subject: Custom Tag Lib


Tomcat Users:

I've been fighting with some version differences in tom cat wondering why my
app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
4.1.27 is not working from my perspective, and have been fighting with it
since monday.  None of the books I have touch this subject or ellude to the
problem, and I've seached high and low for solutions.

I'm having a problem working with my custom tag library.  The stange part to
this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
has a tage called site that extends a base tag, and those tags use other
classes in my data namespace to hit a database.

The tags are returning the proper data in both versions, but in 4.1.27, I
have to reload the contect in the manager for it to register the changes
from the database.  I have added some printlns to std out to track what's
going on.  In tomcat 4.0.6 they are going through all the code as I would
exspect it to.  I have included each of the class files that are called.  I
have also included the printouts from both versions of tomcat to clierify
how each version is handling the calls.

The object hiarchey goes as follows:

jPublish.Tags site extends inc_tag.
jPublish.Data.site_manager extends jPublish.Data.manager, managers contain,
load, and fill datas.
jPublish.Data.site_data extends jPublish.Data.data, used for storing data
and tracking updates.


--- INDEX.JSP ---
%@ page contentType=text/html %
%@ taglib prefix=inc uri=inc %
inc:site site=1 action=none/
html
headtitleinc:site action=title //title/head

body
h1Welcome to inc:site action=title/!/h1
copy; inc:site action=copyright/
/body
/html

--- TOMCAT 4.0.6 STDOUT ---
Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
Starting service Tomcat-Apache
Apache Tomcat/4.0.6
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Shawn
jPublish.Tags.site.doEndTag(): End

jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting

RE: Custom Tag Lib

2003-08-14 Thread Shawn Zernik

Mr. Mezick:

From what I'm gathering, the release should not be implimented to reset the
data and classes used by a tag, but only for things like closing files and
db connections? Just to make sure I'm thinking about this properly, the
doStartTag should be treated like the constructor: make sure my data is
setup properly there. The doEndTag should be used for normal completion
without errors.

Does Tomcat impliment object pooling beyon the tags?  Are my supporting
classes for the tag pooled?

Thanks to all who have helped me.

Shawn

-Original Message-
From: Angus Mezick [mailto:[EMAIL PROTECTED]
Sent: Friday, August 08, 2003 8:06 AM
To: Tomcat Users List
Subject: RE: Custom Tag Lib


It would be best if you went a rewrote your tags not to require release
to be called.  That change will also bring you in-line with the jsp
spec.  These links might help:
http://www.onjava.com/lpt/a/1248
http://www.onjava.com/lpt/a/1250
http://jakarta.apache.org/taglibs/guidelines.html

 -Original Message-
 From: Shawn Zernik [mailto:[EMAIL PROTECTED]
 Sent: Thursday, August 07, 2003 11:41 PM
 To: Tomcat Users List; [EMAIL PROTECTED]
 Subject: RE: Custom Tag Lib


 Mike:

 Thanks so very much...  I saw their is a config option in
 the Jasper to
 turn off tag pooling.  do you thing that would work too, of shouldI
 impliment it in my source code.  I'm gonna take a look at it
 right now.

 Shawn

 -Original Message-
 From: Mike Cherichetti (Renegade Internet)
 [mailto:[EMAIL PROTECTED]
 Sent: Thursday, August 07, 2003 10:28 PM
 To: Tomcat Users List
 Subject: RE: Custom Tag Lib


 Shawn,

 I ran into this problem as well when switching from 4.0 to
 4.1.  I think it
 has something to do with 4.1 pooling and re-using tag
 objects.  What I did
 in all of my doStartTag(), doAfterBody(), etc... methods was
 manually call
 release() to reset the data in the tags like so:

 public int doStartTag() throws JspException
 {
   try
   {
 ...
   }

   catch (Exception exception)
   {
 throw new JspException(exception);
   }

   finally
   {
 release();
   }

   return SKIP_BODY;
 }

 Have a nice day ...

 Sincerely,

 Mike Cherichetti
 Renegade Internet
 Internet Advertising Delivery Solutions
 www.renegadeinternet.com
 Phone (724) 658-6346
 Fax (724) 658-6346


 -Original Message-
 From: Shawn Zernik [mailto:[EMAIL PROTECTED]
 Sent: Thursday, August 07, 2003 10:56 PM
 To: [EMAIL PROTECTED]
 Subject: Custom Tag Lib


 Tomcat Users:

 I've been fighting with some version differences in tom cat
 wondering why my
 app acts severly different on Tomcat 4.1.27 then 4.0.6.  It
 appears that
 4.1.27 is not working from my perspective, and have been
 fighting with it
 since monday.  None of the books I have touch this subject or
 ellude to the
 problem, and I've seached high and low for solutions.

 I'm having a problem working with my custom tag library.  The
 stange part to
 this is it appears to work on tomcat 4.0.6 but not on 4.1.27.
  The library
 has a tage called site that extends a base tag, and those
 tags use other
 classes in my data namespace to hit a database.

 The tags are returning the proper data in both versions, but
 in 4.1.27, I
 have to reload the contect in the manager for it to
 register the changes
 from the database.  I have added some printlns to std out to
 track what's
 going on.  In tomcat 4.0.6 they are going through all the
 code as I would
 exspect it to.  I have included each of the class files that
 are called.  I
 have also included the printouts from both versions of tomcat
 to clierify
 how each version is handling the calls.

 The object hiarchey goes as follows:

 jPublish.Tags site extends inc_tag.
 jPublish.Data.site_manager extends jPublish.Data.manager,
 managers contain,
 load, and fill datas.
 jPublish.Data.site_data extends jPublish.Data.data, used for
 storing data
 and tracking updates.


 --- INDEX.JSP ---
 %@ page contentType=text/html %
 %@ taglib prefix=inc uri=inc %
 inc:site site=1 action=none/
 html
   headtitleinc:site action=title //title/head

   body
   h1Welcome to inc:site action=title/!/h1
   copy; inc:site action=copyright/
   /body
 /html

 --- TOMCAT 4.0.6 STDOUT ---
 Starting service Tomcat-Standalone
 Apache Tomcat/4.0.6
 Starting service Tomcat-Apache
 Apache Tomcat/4.0.6
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.setSite()
 jPublish.Data.manager()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.inc_tag.loaded()
 jPublish.Tags.inc_tag.loaded(): not instance
 jPublish.Data.manager.load()
 jPublish.Tags.inc_tag.loaded(): load ok
 jPublish.Tags.inc_tag.loaded(): next ok
 jPublish.Tags.inc_tag.loaded(): reached fill.
 jPublish.Tags.site.loaded()
 Internetwork Consulting
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site

Custom Tag Lib

2003-08-14 Thread Shawn Zernik

Tomcat Users:

I've been fighting with some version differences in tom cat wondering why my
app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
4.1.27 is not working from my perspective, and have been fighting with it
since monday.  None of the books I have touch this subject or ellude to the
problem, and I've seached high and low for solutions.

I'm having a problem working with my custom tag library.  The stange part to
this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
has a tage called site that extends a base tag, and those tags use other
classes in my data namespace to hit a database.

The tags are returning the proper data in both versions, but in 4.1.27, I
have to reload the contect in the manager for it to register the changes
from the database.  I have added some printlns to std out to track what's
going on.  In tomcat 4.0.6 they are going through all the code as I would
exspect it to.  I have included each of the class files that are called.  I
have also included the printouts from both versions of tomcat to clierify
how each version is handling the calls.

The object hiarchey goes as follows:

jPublish.Tags site extends inc_tag.
jPublish.Data.site_manager extends jPublish.Data.manager, managers contain,
load, and fill datas.
jPublish.Data.site_data extends jPublish.Data.data, used for storing data
and tracking updates.


--- INDEX.JSP ---
%@ page contentType=text/html %
%@ taglib prefix=inc uri=inc %
inc:site site=1 action=none/
html
headtitleinc:site action=title //title/head

body
h1Welcome to inc:site action=title/!/h1
copy; inc:site action=copyright/
/body
/html

--- TOMCAT 4.0.6 STDOUT ---
Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
Starting service Tomcat-Apache
Apache Tomcat/4.0.6
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Shawn
jPublish.Tags.site.doEndTag(): End

jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
INC
jPublish.Tags.site.doEndTag(): End

--- TOMCAT 4.1.27 STDOUT: db INC then Shawn ---
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok

RE: Custom Tag Lib

2003-08-14 Thread Mike Cherichetti \(Renegade Internet\)

Shawn,

I ran into this problem as well when switching from 4.0 to 4.1.  I think it
has something to do with 4.1 pooling and re-using tag objects.  What I did
in all of my doStartTag(), doAfterBody(), etc... methods was manually call
release() to reset the data in the tags like so:

public int doStartTag() throws JspException
{
  try
  {
...
  }

  catch (Exception exception)
  {
throw new JspException(exception);
  }

  finally
  {
release();
  }

  return SKIP_BODY;
}

Have a nice day ...

Sincerely,

Mike Cherichetti
Renegade Internet
Internet Advertising Delivery Solutions
www.renegadeinternet.com
Phone (724) 658-6346
Fax (724) 658-6346


-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:56 PM
To: [EMAIL PROTECTED]
Subject: Custom Tag Lib


Tomcat Users:

I've been fighting with some version differences in tom cat wondering why my
app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
4.1.27 is not working from my perspective, and have been fighting with it
since monday.  None of the books I have touch this subject or ellude to the
problem, and I've seached high and low for solutions.

I'm having a problem working with my custom tag library.  The stange part to
this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
has a tage called site that extends a base tag, and those tags use other
classes in my data namespace to hit a database.

The tags are returning the proper data in both versions, but in 4.1.27, I
have to reload the contect in the manager for it to register the changes
from the database.  I have added some printlns to std out to track what's
going on.  In tomcat 4.0.6 they are going through all the code as I would
exspect it to.  I have included each of the class files that are called.  I
have also included the printouts from both versions of tomcat to clierify
how each version is handling the calls.

The object hiarchey goes as follows:

jPublish.Tags site extends inc_tag.
jPublish.Data.site_manager extends jPublish.Data.manager, managers contain,
load, and fill datas.
jPublish.Data.site_data extends jPublish.Data.data, used for storing data
and tracking updates.


--- INDEX.JSP ---
%@ page contentType=text/html %
%@ taglib prefix=inc uri=inc %
inc:site site=1 action=none/
html
headtitleinc:site action=title //title/head

body
h1Welcome to inc:site action=title/!/h1
copy; inc:site action=copyright/
/body
/html

--- TOMCAT 4.0.6 STDOUT ---
Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
Starting service Tomcat-Apache
Apache Tomcat/4.0.6
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Shawn
jPublish.Tags.site.doEndTag(): End

jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End

Re: Custom Tag Lib

2003-08-14 Thread Jon Wingfield

Yikes, calling release() in doStartTag() stops any state being 
accessible to child (body) tags. That would kill our custom iterator tags.
You could have your tags implement the TryCatchFinally interface, 
instead. That way you'll have a chance to reset state before reuse:
http://jakarta.apache.org/taglibs/guidelines.html

I've seen posts on this list saying that tag pooling has either made 
their site a dog or has given a huge positive performance gain. For our 
site, which has many tags per page, it is the latter case :) If you're 
thinking about turning pooling off you'll need to test the effects on 
performance.

Jon

PS We had to go through this process on the upgrade. I share your pain

Mike Cherichetti (Renegade Internet) wrote:
Shawn,

I ran into this problem as well when switching from 4.0 to 4.1.  I think it
has something to do with 4.1 pooling and re-using tag objects.  What I did
in all of my doStartTag(), doAfterBody(), etc... methods was manually call
release() to reset the data in the tags like so:
public int doStartTag() throws JspException
{
  try
  {
...
  }
  catch (Exception exception)
  {
throw new JspException(exception);
  }
  finally
  {
release();
  }
  return SKIP_BODY;
}
Have a nice day ...

Sincerely,

Mike Cherichetti
Renegade Internet
Internet Advertising Delivery Solutions
www.renegadeinternet.com
Phone (724) 658-6346
Fax (724) 658-6346
-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:56 PM
To: [EMAIL PROTECTED]
Subject: Custom Tag Lib
Tomcat Users:

I've been fighting with some version differences in tom cat wondering why my
app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
4.1.27 is not working from my perspective, and have been fighting with it
since monday.  None of the books I have touch this subject or ellude to the
problem, and I've seached high and low for solutions.
I'm having a problem working with my custom tag library.  The stange part to
this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
has a tage called site that extends a base tag, and those tags use other
classes in my data namespace to hit a database.
The tags are returning the proper data in both versions, but in 4.1.27, I
have to reload the contect in the manager for it to register the changes
from the database.  I have added some printlns to std out to track what's
going on.  In tomcat 4.0.6 they are going through all the code as I would
exspect it to.  I have included each of the class files that are called.  I
have also included the printouts from both versions of tomcat to clierify
how each version is handling the calls.
The object hiarchey goes as follows:

jPublish.Tags site extends inc_tag.
jPublish.Data.site_manager extends jPublish.Data.manager, managers contain,
load, and fill datas.
jPublish.Data.site_data extends jPublish.Data.data, used for storing data
and tracking updates.
--- INDEX.JSP ---
%@ page contentType=text/html %
%@ taglib prefix=inc uri=inc %
inc:site site=1 action=none/
html
headtitleinc:site action=title //title/head
body
h1Welcome to inc:site action=title/!/h1
copy; inc:site action=copyright/
/body
/html
--- TOMCAT 4.0.6 STDOUT ---
Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
Starting service Tomcat-Apache
Apache Tomcat/4.0.6
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Shawn
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin

RE: Custom Tag Lib

2003-08-14 Thread Shawn Zernik

Mike:

I can't resolve that problem.  can I impliment those tags as simple tags:
the JSP spec says that they will not be cached or reused.

Shawn

-Original Message-
From: Mike Cherichetti (Renegade Internet)
[mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:59 PM
To: Tomcat Users List
Subject: RE: Custom Tag Lib


Hi Shawn,

Actually, I wasn't aware that there was an option to disable it.  When I
figured out what was happening, I went ahead and handled it in my code.  No
telling how other application servers might handle it.  If you're only going
to be deploying on Tomcat, disabling pooling would probably save you some
time, but you still might want to handle it in your code to get better
performance.

Mike

-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 11:41 PM
To: Tomcat Users List; [EMAIL PROTECTED]
Subject: RE: Custom Tag Lib


Mike:

Thanks so very much...  I saw their is a config option in the Jasper to
turn off tag pooling.  do you thing that would work too, of shouldI
impliment it in my source code.  I'm gonna take a look at it right now.

Shawn

-Original Message-
From: Mike Cherichetti (Renegade Internet)
[mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:28 PM
To: Tomcat Users List
Subject: RE: Custom Tag Lib


Shawn,

I ran into this problem as well when switching from 4.0 to 4.1.  I think it
has something to do with 4.1 pooling and re-using tag objects.  What I did
in all of my doStartTag(), doAfterBody(), etc... methods was manually call
release() to reset the data in the tags like so:

public int doStartTag() throws JspException
{
  try
  {
...
  }

  catch (Exception exception)
  {
throw new JspException(exception);
  }

  finally
  {
release();
  }

  return SKIP_BODY;
}

Have a nice day ...

Sincerely,

Mike Cherichetti
Renegade Internet
Internet Advertising Delivery Solutions
www.renegadeinternet.com
Phone (724) 658-6346
Fax (724) 658-6346


-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:56 PM
To: [EMAIL PROTECTED]
Subject: Custom Tag Lib


Tomcat Users:

I've been fighting with some version differences in tom cat wondering why my
app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
4.1.27 is not working from my perspective, and have been fighting with it
since monday.  None of the books I have touch this subject or ellude to the
problem, and I've seached high and low for solutions.

I'm having a problem working with my custom tag library.  The stange part to
this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
has a tage called site that extends a base tag, and those tags use other
classes in my data namespace to hit a database.

The tags are returning the proper data in both versions, but in 4.1.27, I
have to reload the contect in the manager for it to register the changes
from the database.  I have added some printlns to std out to track what's
going on.  In tomcat 4.0.6 they are going through all the code as I would
exspect it to.  I have included each of the class files that are called.  I
have also included the printouts from both versions of tomcat to clierify
how each version is handling the calls.

The object hiarchey goes as follows:

jPublish.Tags site extends inc_tag.
jPublish.Data.site_manager extends jPublish.Data.manager, managers contain,
load, and fill datas.
jPublish.Data.site_data extends jPublish.Data.data, used for storing data
and tracking updates.


--- INDEX.JSP ---
%@ page contentType=text/html %
%@ taglib prefix=inc uri=inc %
inc:site site=1 action=none/
html
headtitleinc:site action=title //title/head

body
h1Welcome to inc:site action=title/!/h1
copy; inc:site action=copyright/
/body
/html

--- TOMCAT 4.0.6 STDOUT ---
Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
Starting service Tomcat-Apache
Apache Tomcat/4.0.6
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager

RE: Custom Tag Lib

2003-08-14 Thread Angus Mezick

Shawn,
Bingo, you got it (in reguards to how to use release())

Right about doStartTag and doEndTag.  Just make user you NEVER change a
property that is set through a tag attribute.  This is what causes most
people's problems.  Never use a property's set method.  Reserve this for
container use only. (And don't go sneaking around the set method and do
property=foo; either ;)

Session objects are pooled I think.  I don't think your objects are
pooled though.
--Angus

 -Original Message-
 From: Shawn Zernik [mailto:[EMAIL PROTECTED] 
 Sent: Friday, August 08, 2003 12:11 PM
 To: Tomcat Users List
 Subject: RE: Custom Tag Lib
 
 
 Mr. Mezick:
 
 From what I'm gathering, the release should not be 
 implimented to reset the
 data and classes used by a tag, but only for things like 
 closing files and
 db connections? Just to make sure I'm thinking about this 
 properly, the
 doStartTag should be treated like the constructor: make sure 
 my data is
 setup properly there. The doEndTag should be used for 
 normal completion
 without errors.
 
 Does Tomcat impliment object pooling beyon the tags?  Are my 
 supporting
 classes for the tag pooled?
 
 Thanks to all who have helped me.
 
 Shawn
 
 -Original Message-
 From: Angus Mezick [mailto:[EMAIL PROTECTED]
 Sent: Friday, August 08, 2003 8:06 AM
 To: Tomcat Users List
 Subject: RE: Custom Tag Lib
 
 
 It would be best if you went a rewrote your tags not to 
 require release
 to be called.  That change will also bring you in-line with the jsp
 spec.  These links might help:
 http://www.onjava.com/lpt/a/1248
 http://www.onjava.com/lpt/a/1250
 http://jakarta.apache.org/taglibs/guidelines.html
 
  -Original Message-
  From: Shawn Zernik [mailto:[EMAIL PROTECTED]
  Sent: Thursday, August 07, 2003 11:41 PM
  To: Tomcat Users List; [EMAIL PROTECTED]
  Subject: RE: Custom Tag Lib
 
 
  Mike:
 
  Thanks so very much...  I saw their is a config option in
  the Jasper to
  turn off tag pooling.  do you thing that would work too, of shouldI
  impliment it in my source code.  I'm gonna take a look at it
  right now.
 
  Shawn
 
  -Original Message-
  From: Mike Cherichetti (Renegade Internet)
  [mailto:[EMAIL PROTECTED]
  Sent: Thursday, August 07, 2003 10:28 PM
  To: Tomcat Users List
  Subject: RE: Custom Tag Lib
 
 
  Shawn,
 
  I ran into this problem as well when switching from 4.0 to
  4.1.  I think it
  has something to do with 4.1 pooling and re-using tag
  objects.  What I did
  in all of my doStartTag(), doAfterBody(), etc... methods was
  manually call
  release() to reset the data in the tags like so:
 
  public int doStartTag() throws JspException
  {
try
{
  ...
}
 
catch (Exception exception)
{
  throw new JspException(exception);
}
 
finally
{
  release();
}
 
return SKIP_BODY;
  }
 
  Have a nice day ...
 
  Sincerely,
 
  Mike Cherichetti
  Renegade Internet
  Internet Advertising Delivery Solutions
  www.renegadeinternet.com
  Phone (724) 658-6346
  Fax (724) 658-6346
 
 
  -Original Message-
  From: Shawn Zernik [mailto:[EMAIL PROTECTED]
  Sent: Thursday, August 07, 2003 10:56 PM
  To: [EMAIL PROTECTED]
  Subject: Custom Tag Lib
 
 
  Tomcat Users:
 
  I've been fighting with some version differences in tom cat
  wondering why my
  app acts severly different on Tomcat 4.1.27 then 4.0.6.  It
  appears that
  4.1.27 is not working from my perspective, and have been
  fighting with it
  since monday.  None of the books I have touch this subject or
  ellude to the
  problem, and I've seached high and low for solutions.
 
  I'm having a problem working with my custom tag library.  The
  stange part to
  this is it appears to work on tomcat 4.0.6 but not on 4.1.27.
   The library
  has a tage called site that extends a base tag, and those
  tags use other
  classes in my data namespace to hit a database.
 
  The tags are returning the proper data in both versions, but
  in 4.1.27, I
  have to reload the contect in the manager for it to
  register the changes
  from the database.  I have added some printlns to std out to
  track what's
  going on.  In tomcat 4.0.6 they are going through all the
  code as I would
  exspect it to.  I have included each of the class files that
  are called.  I
  have also included the printouts from both versions of tomcat
  to clierify
  how each version is handling the calls.
 
  The object hiarchey goes as follows:
 
  jPublish.Tags site extends inc_tag.
  jPublish.Data.site_manager extends jPublish.Data.manager,
  managers contain,
  load, and fill datas.
  jPublish.Data.site_data extends jPublish.Data.data, used for
  storing data
  and tracking updates.
 
 
  --- INDEX.JSP ---
  %@ page contentType=text/html %
  %@ taglib prefix=inc uri=inc %
  inc:site site=1 action=none/
  html
  headtitleinc:site action=title //title/head
 
  body
  h1Welcome to inc:site action=title/!/h1
  copy; inc:site action

RE: Custom Tag Lib

2003-08-14 Thread Angus Mezick

TryCatchFinally is probably not only cleaner, but is also more spec
friendly.
--Angus

 -Original Message-
 From: Mike Cherichetti (Renegade Internet) 
 [mailto:[EMAIL PROTECTED] 
 Sent: Friday, August 08, 2003 12:42 PM
 To: Tomcat Users List
 Subject: RE: Custom Tag Lib

 I should have been more clear.  If you have tags without body 
 content, call
 release() at the end of doStartTag().  If you have tags with 
 body content,
 call release() at the end of doAfterBody().  This has worked 
 rather well for
 me.  Perhaps implement TryCatchFinally would be a little cleaner.

 Mike

 -Original Message-
 From: Jon Wingfield [mailto:[EMAIL PROTECTED]
 Sent: Friday, August 08, 2003 5:08 AM
 To: Tomcat Users List
 Subject: Re: Custom Tag Lib

 Yikes, calling release() in doStartTag() stops any state being
 accessible to child (body) tags. That would kill our custom 
 iterator tags.
 You could have your tags implement the TryCatchFinally interface,
 instead. That way you'll have a chance to reset state before reuse:
 http://jakarta.apache.org/taglibs/guidelines.html

 I've seen posts on this list saying that tag pooling has either made
 their site a dog or has given a huge positive performance 
 gain. For our
 site, which has many tags per page, it is the latter case :) If you're
 thinking about turning pooling off you'll need to test the effects on
 performance.

 Jon

 PS We had to go through this process on the upgrade. I share your pain

 Mike Cherichetti (Renegade Internet) wrote:
  Shawn,

  I ran into this problem as well when switching from 4.0 to 
 4.1.  I think
 it
  has something to do with 4.1 pooling and re-using tag 
 objects.  What I did
  in all of my doStartTag(), doAfterBody(), etc... methods 
 was manually call
  release() to reset the data in the tags like so:

  public int doStartTag() throws JspException
  {
try
{
  ...
}

catch (Exception exception)
{
  throw new JspException(exception);
}

finally
{
  release();
}

return SKIP_BODY;
  }

  Have a nice day ...

  Sincerely,

  Mike Cherichetti
  Renegade Internet
  Internet Advertising Delivery Solutions
  www.renegadeinternet.com
  Phone (724) 658-6346
  Fax (724) 658-6346

  -Original Message-
  From: Shawn Zernik [mailto:[EMAIL PROTECTED]
  Sent: Thursday, August 07, 2003 10:56 PM
  To: [EMAIL PROTECTED]
  Subject: Custom Tag Lib

  Tomcat Users:

  I've been fighting with some version differences in tom cat 
 wondering why
 my
  app acts severly different on Tomcat 4.1.27 then 4.0.6.  It 
 appears that
  4.1.27 is not working from my perspective, and have been 
 fighting with it
  since monday.  None of the books I have touch this subject 
 or ellude to
 the
  problem, and I've seached high and low for solutions.

  I'm having a problem working with my custom tag library.  
 The stange part
 to
  this is it appears to work on tomcat 4.0.6 but not on 
 4.1.27.  The library
  has a tage called site that extends a base tag, and those 
 tags use other
  classes in my data namespace to hit a database.

  The tags are returning the proper data in both versions, 
 but in 4.1.27, I
  have to reload the contect in the manager for it to register the
 changes
  from the database.  I have added some printlns to std out 
 to track what's
  going on.  In tomcat 4.0.6 they are going through all the 
 code as I would
  exspect it to.  I have included each of the class files 
 that are called.
 I
  have also included the printouts from both versions of 
 tomcat to clierify
  how each version is handling the calls.

  The object hiarchey goes as follows:

  jPublish.Tags site extends inc_tag.
  jPublish.Data.site_manager extends jPublish.Data.manager, managers
 contain,
  load, and fill datas.
  jPublish.Data.site_data extends jPublish.Data.data, used 
 for storing data
  and tracking updates.

  --- INDEX.JSP ---
  %@ page contentType=text/html %
  %@ taglib prefix=inc uri=inc %
  inc:site site=1 action=none/
  html
  headtitleinc:site action=title //title/head

  body
  h1Welcome to inc:site action=title/!/h1
  copy; inc:site action=copyright/
  /body
  /html

  --- TOMCAT 4.0.6 STDOUT ---
  Starting service Tomcat-Standalone
  Apache Tomcat/4.0.6
  Starting service Tomcat-Apache
  Apache Tomcat/4.0.6
  jPublish.Data.manager()
  jPublish.Tags.site()
  jPublish.Tags.site.setSite()
  jPublish.Data.manager()
  jPublish.Tags.site.doEndTag(): Begin
  jPublish.Tags.site.doEndTag(): End
  jPublish.Data.manager()
  jPublish.Tags.site()
  jPublish.Tags.site.doEndTag(): Begin
  jPublish.Tags.inc_tag.loaded()
  jPublish.Tags.inc_tag.loaded(): not instance
  jPublish.Data.manager.load()
  jPublish.Tags.inc_tag.loaded(): load ok
  jPublish.Tags.inc_tag.loaded(): next ok
  jPublish.Tags.inc_tag.loaded(): reached fill.
  jPublish.Tags.site.loaded()
  Internetwork Consulting
  jPublish.Tags.site.doEndTag(): End

RE: Custom Tag Lib

2003-08-14 Thread Mike Cherichetti \(Renegade Internet\)

Hi Shawn,

Actually, I wasn't aware that there was an option to disable it.  When I
figured out what was happening, I went ahead and handled it in my code.  No
telling how other application servers might handle it.  If you're only going
to be deploying on Tomcat, disabling pooling would probably save you some
time, but you still might want to handle it in your code to get better
performance.

Mike

-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 11:41 PM
To: Tomcat Users List; [EMAIL PROTECTED]
Subject: RE: Custom Tag Lib


Mike:

Thanks so very much...  I saw their is a config option in the Jasper to
turn off tag pooling.  do you thing that would work too, of shouldI
impliment it in my source code.  I'm gonna take a look at it right now.

Shawn

-Original Message-
From: Mike Cherichetti (Renegade Internet)
[mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:28 PM
To: Tomcat Users List
Subject: RE: Custom Tag Lib


Shawn,

I ran into this problem as well when switching from 4.0 to 4.1.  I think it
has something to do with 4.1 pooling and re-using tag objects.  What I did
in all of my doStartTag(), doAfterBody(), etc... methods was manually call
release() to reset the data in the tags like so:

public int doStartTag() throws JspException
{
  try
  {
...
  }

  catch (Exception exception)
  {
throw new JspException(exception);
  }

  finally
  {
release();
  }

  return SKIP_BODY;
}

Have a nice day ...

Sincerely,

Mike Cherichetti
Renegade Internet
Internet Advertising Delivery Solutions
www.renegadeinternet.com
Phone (724) 658-6346
Fax (724) 658-6346


-Original Message-
From: Shawn Zernik [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2003 10:56 PM
To: [EMAIL PROTECTED]
Subject: Custom Tag Lib


Tomcat Users:

I've been fighting with some version differences in tom cat wondering why my
app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
4.1.27 is not working from my perspective, and have been fighting with it
since monday.  None of the books I have touch this subject or ellude to the
problem, and I've seached high and low for solutions.

I'm having a problem working with my custom tag library.  The stange part to
this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
has a tage called site that extends a base tag, and those tags use other
classes in my data namespace to hit a database.

The tags are returning the proper data in both versions, but in 4.1.27, I
have to reload the contect in the manager for it to register the changes
from the database.  I have added some printlns to std out to track what's
going on.  In tomcat 4.0.6 they are going through all the code as I would
exspect it to.  I have included each of the class files that are called.  I
have also included the printouts from both versions of tomcat to clierify
how each version is handling the calls.

The object hiarchey goes as follows:

jPublish.Tags site extends inc_tag.
jPublish.Data.site_manager extends jPublish.Data.manager, managers contain,
load, and fill datas.
jPublish.Data.site_data extends jPublish.Data.data, used for storing data
and tracking updates.


--- INDEX.JSP ---
%@ page contentType=text/html %
%@ taglib prefix=inc uri=inc %
inc:site site=1 action=none/
html
headtitleinc:site action=title //title/head

body
h1Welcome to inc:site action=title/!/h1
copy; inc:site action=copyright/
/body
/html

--- TOMCAT 4.0.6 STDOUT ---
Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
Starting service Tomcat-Apache
Apache Tomcat/4.0.6
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.setSite()
jPublish.Data.manager()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Internetwork Consulting
jPublish.Tags.site.doEndTag(): End
jPublish.Data.manager()
jPublish.Tags.site()
jPublish.Tags.site.doEndTag(): Begin
jPublish.Tags.inc_tag.loaded()
jPublish.Tags.inc_tag.loaded(): not instance
jPublish.Data.manager.load()
jPublish.Tags.inc_tag.loaded(): load ok
jPublish.Tags.inc_tag.loaded(): next ok
jPublish.Tags.inc_tag.loaded(): reached fill.
jPublish.Tags.site.loaded()
Shawn

RE: Custom Tag Lib

2003-08-10 Thread Mike Cherichetti \(Renegade Internet\)

I should have been more clear.  If you have tags without body content, call
release() at the end of doStartTag().  If you have tags with body content,
call release() at the end of doAfterBody().  This has worked rather well for
me.  Perhaps implement TryCatchFinally would be a little cleaner.

Mike

-Original Message-
From: Jon Wingfield [mailto:[EMAIL PROTECTED]
Sent: Friday, August 08, 2003 5:08 AM
To: Tomcat Users List
Subject: Re: Custom Tag Lib


Yikes, calling release() in doStartTag() stops any state being
accessible to child (body) tags. That would kill our custom iterator tags.
You could have your tags implement the TryCatchFinally interface,
instead. That way you'll have a chance to reset state before reuse:
http://jakarta.apache.org/taglibs/guidelines.html

I've seen posts on this list saying that tag pooling has either made
their site a dog or has given a huge positive performance gain. For our
site, which has many tags per page, it is the latter case :) If you're
thinking about turning pooling off you'll need to test the effects on
performance.

Jon

PS We had to go through this process on the upgrade. I share your pain

Mike Cherichetti (Renegade Internet) wrote:
 Shawn,

 I ran into this problem as well when switching from 4.0 to 4.1.  I think
it
 has something to do with 4.1 pooling and re-using tag objects.  What I did
 in all of my doStartTag(), doAfterBody(), etc... methods was manually call
 release() to reset the data in the tags like so:

 public int doStartTag() throws JspException
 {
   try
   {
 ...
   }

   catch (Exception exception)
   {
 throw new JspException(exception);
   }

   finally
   {
 release();
   }

   return SKIP_BODY;
 }

 Have a nice day ...

 Sincerely,

 Mike Cherichetti
 Renegade Internet
 Internet Advertising Delivery Solutions
 www.renegadeinternet.com
 Phone (724) 658-6346
 Fax (724) 658-6346


 -Original Message-
 From: Shawn Zernik [mailto:[EMAIL PROTECTED]
 Sent: Thursday, August 07, 2003 10:56 PM
 To: [EMAIL PROTECTED]
 Subject: Custom Tag Lib


 Tomcat Users:

 I've been fighting with some version differences in tom cat wondering why
my
 app acts severly different on Tomcat 4.1.27 then 4.0.6.  It appears that
 4.1.27 is not working from my perspective, and have been fighting with it
 since monday.  None of the books I have touch this subject or ellude to
the
 problem, and I've seached high and low for solutions.

 I'm having a problem working with my custom tag library.  The stange part
to
 this is it appears to work on tomcat 4.0.6 but not on 4.1.27.  The library
 has a tage called site that extends a base tag, and those tags use other
 classes in my data namespace to hit a database.

 The tags are returning the proper data in both versions, but in 4.1.27, I
 have to reload the contect in the manager for it to register the
changes
 from the database.  I have added some printlns to std out to track what's
 going on.  In tomcat 4.0.6 they are going through all the code as I would
 exspect it to.  I have included each of the class files that are called.
I
 have also included the printouts from both versions of tomcat to clierify
 how each version is handling the calls.

 The object hiarchey goes as follows:

 jPublish.Tags site extends inc_tag.
 jPublish.Data.site_manager extends jPublish.Data.manager, managers
contain,
 load, and fill datas.
 jPublish.Data.site_data extends jPublish.Data.data, used for storing data
 and tracking updates.


 --- INDEX.JSP ---
 %@ page contentType=text/html %
 %@ taglib prefix=inc uri=inc %
 inc:site site=1 action=none/
 html
   headtitleinc:site action=title //title/head

   body
   h1Welcome to inc:site action=title/!/h1
   copy; inc:site action=copyright/
   /body
 /html

 --- TOMCAT 4.0.6 STDOUT ---
 Starting service Tomcat-Standalone
 Apache Tomcat/4.0.6
 Starting service Tomcat-Apache
 Apache Tomcat/4.0.6
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.setSite()
 jPublish.Data.manager()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.inc_tag.loaded()
 jPublish.Tags.inc_tag.loaded(): not instance
 jPublish.Data.manager.load()
 jPublish.Tags.inc_tag.loaded(): load ok
 jPublish.Tags.inc_tag.loaded(): next ok
 jPublish.Tags.inc_tag.loaded(): reached fill.
 jPublish.Tags.site.loaded()
 Internetwork Consulting
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.inc_tag.loaded()
 jPublish.Tags.inc_tag.loaded(): not instance
 jPublish.Data.manager.load()
 jPublish.Tags.inc_tag.loaded(): load ok
 jPublish.Tags.inc_tag.loaded(): next ok
 jPublish.Tags.inc_tag.loaded(): reached fill.
 jPublish.Tags.site.loaded()
 Internetwork Consulting
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site

Re: Custom Tag Lib

2003-08-08 Thread Tim Funk

SimpleTag is part of JSP2.0 which is in tomcat5. AFAIK, there is no simpletag 
for jsp1.2 (tomcat4)

More info on tag pooling:
http://jakarta.apache.org/tomcat/faq/misc.html#tagpool
http://jakarta.apache.org/tomcat/faq/misc.html#tagbroken
-Tim

Shawn Zernik wrote:
Mike:

I can't resolve that problem.  can I impliment those tags as simple tags:
the JSP spec says that they will not be cached or reused.
Shawn
 


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RE: Custom Tag Lib

2003-08-08 Thread Angus Mezick

It would be best if you went a rewrote your tags not to require release
to be called.  That change will also bring you in-line with the jsp
spec.  These links might help:
http://www.onjava.com/lpt/a/1248
http://www.onjava.com/lpt/a/1250
http://jakarta.apache.org/taglibs/guidelines.html

 -Original Message-
 From: Shawn Zernik [mailto:[EMAIL PROTECTED] 
 Sent: Thursday, August 07, 2003 11:41 PM
 To: Tomcat Users List; [EMAIL PROTECTED]
 Subject: RE: Custom Tag Lib
 
 
 Mike:
 
 Thanks so very much...  I saw their is a config option in 
 the Jasper to
 turn off tag pooling.  do you thing that would work too, of shouldI
 impliment it in my source code.  I'm gonna take a look at it 
 right now.
 
 Shawn
 
 -Original Message-
 From: Mike Cherichetti (Renegade Internet)
 [mailto:[EMAIL PROTECTED]
 Sent: Thursday, August 07, 2003 10:28 PM
 To: Tomcat Users List
 Subject: RE: Custom Tag Lib
 
 
 Shawn,
 
 I ran into this problem as well when switching from 4.0 to 
 4.1.  I think it
 has something to do with 4.1 pooling and re-using tag 
 objects.  What I did
 in all of my doStartTag(), doAfterBody(), etc... methods was 
 manually call
 release() to reset the data in the tags like so:
 
 public int doStartTag() throws JspException
 {
   try
   {
 ...
   }
 
   catch (Exception exception)
   {
 throw new JspException(exception);
   }
 
   finally
   {
 release();
   }
 
   return SKIP_BODY;
 }
 
 Have a nice day ...
 
 Sincerely,
 
 Mike Cherichetti
 Renegade Internet
 Internet Advertising Delivery Solutions
 www.renegadeinternet.com
 Phone (724) 658-6346
 Fax (724) 658-6346
 
 
 -Original Message-
 From: Shawn Zernik [mailto:[EMAIL PROTECTED]
 Sent: Thursday, August 07, 2003 10:56 PM
 To: [EMAIL PROTECTED]
 Subject: Custom Tag Lib
 
 
 Tomcat Users:
 
 I've been fighting with some version differences in tom cat 
 wondering why my
 app acts severly different on Tomcat 4.1.27 then 4.0.6.  It 
 appears that
 4.1.27 is not working from my perspective, and have been 
 fighting with it
 since monday.  None of the books I have touch this subject or 
 ellude to the
 problem, and I've seached high and low for solutions.
 
 I'm having a problem working with my custom tag library.  The 
 stange part to
 this is it appears to work on tomcat 4.0.6 but not on 4.1.27. 
  The library
 has a tage called site that extends a base tag, and those 
 tags use other
 classes in my data namespace to hit a database.
 
 The tags are returning the proper data in both versions, but 
 in 4.1.27, I
 have to reload the contect in the manager for it to 
 register the changes
 from the database.  I have added some printlns to std out to 
 track what's
 going on.  In tomcat 4.0.6 they are going through all the 
 code as I would
 exspect it to.  I have included each of the class files that 
 are called.  I
 have also included the printouts from both versions of tomcat 
 to clierify
 how each version is handling the calls.
 
 The object hiarchey goes as follows:
 
 jPublish.Tags site extends inc_tag.
 jPublish.Data.site_manager extends jPublish.Data.manager, 
 managers contain,
 load, and fill datas.
 jPublish.Data.site_data extends jPublish.Data.data, used for 
 storing data
 and tracking updates.
 
 
 --- INDEX.JSP ---
 %@ page contentType=text/html %
 %@ taglib prefix=inc uri=inc %
 inc:site site=1 action=none/
 html
   headtitleinc:site action=title //title/head
 
   body
   h1Welcome to inc:site action=title/!/h1
   copy; inc:site action=copyright/
   /body
 /html
 
 --- TOMCAT 4.0.6 STDOUT ---
 Starting service Tomcat-Standalone
 Apache Tomcat/4.0.6
 Starting service Tomcat-Apache
 Apache Tomcat/4.0.6
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.setSite()
 jPublish.Data.manager()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.inc_tag.loaded()
 jPublish.Tags.inc_tag.loaded(): not instance
 jPublish.Data.manager.load()
 jPublish.Tags.inc_tag.loaded(): load ok
 jPublish.Tags.inc_tag.loaded(): next ok
 jPublish.Tags.inc_tag.loaded(): reached fill.
 jPublish.Tags.site.loaded()
 Internetwork Consulting
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.inc_tag.loaded()
 jPublish.Tags.inc_tag.loaded(): not instance
 jPublish.Data.manager.load()
 jPublish.Tags.inc_tag.loaded(): load ok
 jPublish.Tags.inc_tag.loaded(): next ok
 jPublish.Tags.inc_tag.loaded(): reached fill.
 jPublish.Tags.site.loaded()
 Internetwork Consulting
 jPublish.Tags.site.doEndTag(): End
 jPublish.Data.manager()
 jPublish.Tags.site()
 jPublish.Tags.site.doEndTag(): Begin
 jPublish.Tags.inc_tag.loaded()
 jPublish.Tags.inc_tag.loaded(): not instance
 jPublish.Data.manager.load()
 jPublish.Tags.inc_tag.loaded(): load ok
 jPublish.Tags.inc_tag.loaded(): next ok

RE: Custom Tag Lib

RE: Custom Tag Lib

Custom Tag Lib

RE: Custom Tag Lib

Re: Custom Tag Lib

RE: Custom Tag Lib

RE: Custom Tag Lib

RE: Custom Tag Lib

RE: Custom Tag Lib

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RE: Custom Tag Lib

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