Should EL (Expression Language) expressions result in the TagData.REQUEST_TIME_VALUE object?

[David Diehl <dl...@yahoo.com>]

I have a custom tag with attributes defined in the TLD
file as allowing run-time expression values, meaning:

<rtexprvalue>true</rtexprvalue>


I also have a TagExtraInfo class that I am using to
validate the values provided.

Inside my TagExtraInfo sub-class I have code such as
this:

   Object attr = data.getAttribute("groupSize");

   if ( attr != null &&
        !attr.equals(TagData.REQUEST_TIME_VALUE)
   {

and so on.   When, in my JSP, I provide attribute
values such as "<%= 10 * 14 %>" (JSP scriplet) I do
indeed get the TagData.REQUEST_TIME_VALUE object back
on this call.

However, when I instead have an EL value, something
like "${groupSizeValue}", I do not received the
REQUEST_TIME_VALUE distinguished object back.  I
receive a String object, containing the text
"${groupSizeValue}".  Is this the correct behavior? 
Everything I have read (books, Google searches, etc.)
seems to point me in the thinking that this is a bug.


>From looking at the tomcat 5.5.20 and 5.5.23 source
code, I see where the JspAttribute (nested class of
Node) is created.  In the Validator class, line 1117,
is the creation for this object passing the constant
"false" for the "expr" argument (5th argument to the
1st ctor of this class).  I believe it is line 1117
that would be getting executed since the if statement
preceding this is:

  if (el.containsEL() && !pageInfo.isELIgnored()) {


So, my question is, why would an EL expression when EL
is not being ignored be considered not an expression?

Thanks in advance.

dave


 
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Re: Should EL (Expression Language) expressions result in the TagData.REQUEST_TIME_VALUE object?

[David Diehl <dl...@yahoo.com>]

Sorry to be a pest, but no replies in 2 days.  Any
tomcat developers willing to help me?  Should I just
post this as a bug?  Any advice is appreciated.

thanks.

dave

--- David Diehl <dl...@yahoo.com> wrote:

> I have a custom tag with attributes defined in the
> TLD
> file as allowing run-time expression values,
> meaning:
> 
> <rtexprvalue>true</rtexprvalue>
> 
> 
> I also have a TagExtraInfo class that I am using to
> validate the values provided.
> 
> Inside my TagExtraInfo sub-class I have code such as
> this:
> 
>    Object attr = data.getAttribute("groupSize");
> 
>    if ( attr != null &&
>         !attr.equals(TagData.REQUEST_TIME_VALUE)
>    {
> 
> and so on.   When, in my JSP, I provide attribute
> values such as "<%= 10 * 14 %>" (JSP scriplet) I do
> indeed get the TagData.REQUEST_TIME_VALUE object
> back
> on this call.
> 
> However, when I instead have an EL value, something
> like "${groupSizeValue}", I do not received the
> REQUEST_TIME_VALUE distinguished object back.  I
> receive a String object, containing the text
> "${groupSizeValue}".  Is this the correct behavior? 
> Everything I have read (books, Google searches,
> etc.)
> seems to point me in the thinking that this is a
> bug.
> 
> 
> From looking at the tomcat 5.5.20 and 5.5.23 source
> code, I see where the JspAttribute (nested class of
> Node) is created.  In the Validator class, line
> 1117,
> is the creation for this object passing the constant
> "false" for the "expr" argument (5th argument to the
> 1st ctor of this class).  I believe it is line 1117
> that would be getting executed since the if
> statement
> preceding this is:
> 
>   if (el.containsEL() && !pageInfo.isELIgnored()) {
> 
> 
> So, my question is, why would an EL expression when
> EL
> is not being ignored be considered not an
> expression?
> 
> Thanks in advance.
> 
> dave
> 
> 
>  
>
____________________________________________________________________________________
> Now that's room service!  Choose from over 150,000
> hotels
> in 45,000 destinations on Yahoo! Travel to find your
> fit.
> http://farechase.yahoo.com/promo-generic-14795097
> 
>
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> users@tomcat.apache.org
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> 
> 



 
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