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RE: Rule from param and 2 Vals for keys

2005-03-21 08:23:38
key match="field" use="concat(../../@rsname, '#', ., '#', 
@fieldname)"

and then replace the above expression with

key('k', concat('ABC', '#', 'xxx', '#', 'DEF'))

Errr... I'm not sure what you concat and key solution you provided
accomplishes.  What I was hoping to accomplish with:


/root/recordset[(_at_)rsName='ABC']/record[field[(_at_)fieldname='DEF'] = 
'xxx']

ABC, supplied rsName value to match.  So, rsName = "membership" or
rsName="student" or rsName = "ABC".

You used strings such as 'ABC' as example values, so I reckoned I could do
the same. Just substitute with the actual values you want to search for,
e.g.

key('k', concat('student', '#', 'Smith', '#', 'Last_Name'))>

Michael Kay
 


Same with "xxx", so now you have (spoken in english) and using
membership and Last_Name to replace ABC and DEF respectfully the
following:

"Return the record from the recordset who's name is "memberships" and
who's field "Last_Name" = "Smith".

I hope that clarifies things better.

Karl


On Sat, 19 Mar 2005 10:12:25 -0000, Michael Kay 
<mike(_at_)saxonica(_dot_)com> wrote:
Hello,
Is it possible to invoke a select or test or other xpath 
query from
the value found within a variable or param?

You need an extension such as saxon:evaluate() or 
dyn:evaluate in EXSLT.

- ALSO -

How can you create a key for the following, where "ABC" 
and "XYZ" and
"xxx" are all the values I'd like to supply to the key 
for matching:


/root/recordset[(_at_)rsName='ABC']/record[field[(_at_)fieldname='DEF'] = 
'xxx']


I'm not sure I understand the question. But you can define a key

key match="field" use="concat(../../@rsname, '#', ., '#', 
@fieldname)"

and then replace the above expression with

key('k', concat('ABC', '#', 'xxx', '#', 'DEF'))

Michael Kay
http://www.saxonica.com/


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