Logicsheet as condition

[O....@sh.cvut.cz]

Hi all, 

I'm making a little project in cocoon and I have been cornered now (nothing 
unusal :)). I need to implement 
a permission control of user's actions (it means, that for example some users 
can create something, another users can just read somehing etc.). All is ok, 
but I don't know, how to 
check user's permissions in XSP. My idea is to write something as:

if (<permission:check name="user_can_write"/> == true) {
... then do something, what are you allowed to (some XSP, calling another 
logicsheets etc.)...
}

or something like that:

<permission:check name="user_can_write">
... then do anything, what are you able to...
</permission:check>

The namespace "permission" is defined by a logicsheet, for example 
template "check" will look into SQL databaese, if the appropriate user has 
appropriate permission "user_can_write".

I think, that it is relatively usual stuff and many of you have to write it 
almost every day... But when I tried to make it, following problems encountered:

In the first case is a problem, that if template <permission:check> looks into 
db thru ESQL, it creates tons of java code, so it is no possible to compare 
with value as a normal variable, of course.

In the second example I solve a problem, how to copy the inner content of 
template without changes to be consequently correctly evaluate by another 
logicsheets (my own other logicsheets, xsp logicsheet etc.) and virtual machine.

Another possibility is to write a pure java class, it will look into db and 
will be return corresponding information. But how to use a connection pool of 
cocoon (and if possible without settings of concrete connection parameters, 
that are stored in the cocoon configuration file)? Don't you know a link to 
concrete examples? In user docs are just very general and non-concrete 
informations.

What am I doing wrong, please? Or do you have another idea, how to solve my 
problem or some existing solution? Thanks a lot!

osup



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