[deng-talk] calculate problem

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Hey all.

I just put together a simple offline table lookup form. It has two
instances; one for user interaction (integers specifying row and column,
plus a third for output) and one for the data table, which is in an XML
file. The output element has a bind element specifying a calculation to do
the actual lookup:

...
<xf:bind nodeset="/root/xp"
calculate="instance('xptable')/row[@lvl=instance('form')/lvl]/xp[@cr=instanc
e('form')/cr]"/>
...

In formsPlayer this is working correctly; anytime focus leaves an input box,
fP recalculates the db lookup and updates the output element with the new
value. In DENG, though, the output element remains blank.

Here's a sample of the data table file:

<?xml version="1.0" encoding="iso-8859-1"?>
<xptable>
    <row lvl="1">
        <xp cr="1">300</xp>
        <xp cr="2">600</xp>
        <xp cr="3">900</xp>
        <xp cr="4">1350</xp>
        <xp cr="5">1800</xp>
        <xp cr="6">2700</xp>
        <xp cr="7">3600</xp>
        <xp cr="8">5400</xp>
        <xp cr="9">7200</xp>
        <xp cr="10">10800</xp>
    </row>
    <row lvl="2">
        <xp cr="1">300</xp>
        <xp cr="2">600</xp>
        ...

Any ideas? Maybe my XPath expression is bad? I'm brand new to it, so I
wouldn't be surprised.

You can check out the (non-) working code at
<http://ben.vpd.utexas.edu/xforms/> (DENG loader page) or
<http://ben.vpd.utexas.edu/xforms/xp.html> (if you're not using DENG). Note
that the fP-specific <?import?> tag in the <head> element needs to come out
for DENG to parse the file.

Cheers,
Ben

-- 
Ben Kimball                               <mailto:zu...@ma...>
Web Application Developer                         <phoneto:512.232.2006>
Office of Resource Development, UT Austin              <walkto:DEV1.102>