Re: SimpleTaglib, TaglibHelper, ObjectTaglib and state

[Christopher H. Laco]

Christopher H. Laco wrote:
I'm in the process of writing taglibs around some existing objects. 
Before I got to deep into that process, I became curious as to how to 
best keep state between method calls in an XSP taglib [under mod_perl].

Let's assume we have this simple XSP structure:
    <myobj:load filter1="foo">
        <filter>
            <filter2>bar</filter2>
        </filter>
        <myobj:name/>
        <myobj:description/>
        <myobj:list>
            <myobj:list-name/>
        </myobj:list>
    </myobj:load>
Because I love self punishment, I'm trying to do this in SimpleTaglib, 
and I'm completely lost...

Let's start simple...
<myobj:load name="foo">
        <myobj:filter>
                <myobj:name>bar</myobj:filter>
        </myobj:filter>
        <name><myobj:name/></name>
</myobj:load>
The name attribute and the filter/name node are both optional, I want to 
use the as filters to the load method. So after inspecting %attr and %_, 
the desired name would be passed into load.

In SimpleTaglib, we'd have
  sub load : expr attrib(name) childStruct(filter{name}) : {};
  sub name : expr {}
Now, I need to call MyObj's load method passing in the correct name 
filter. This is easy if I'm only using name via %attr:

  sub load__open {
        return 'my $obj = MyObject->load(' $attr{name} . ');';
  };
  sub name { return '$obj->name' };
This works as intended. A somewhat global $obj is created and used later 
my name.

The problem is, I need access to %_ during load__open so I can tweak the 
filter going into load.

If I wait and create/load $obj = MyObj->load during load() and not 
load__open(), it's too late and name() doesn't work because it doesn't 
see $obj in it's scope. [if that makes any sense].

I can't do the create during filter__open because myobj:filter isn't 
required.

Is this a matter or trolling through $e instead ad the method level, or 
is this an issue where I just have to restor to creating a raw taglib 
sans Simple/Helper?

Thanks,
-=Chris
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]