Orbeon Forms community mailing list

Re: variables inside itemsets

Posted by Alessandro Vernet on Jan 20, 2010; 4:01am
URL: https://discuss.orbeon.com/variables-inside-itemsets-tp1017167p1018137.html

Jeremiah,

First, those ref="xxforms:attribute(foo, bar)" look a bit fishy to me ;). Instead, what about using value="bar"?

Assuming you can, the difficulty seems to be with the expression:

instance('types')/types/type[@typeID = $currentItemName]/label

Supporting xxforms:variable inside a xforms:itemset would make sense, so I added an RFE for this: http://forge.ow2.org/tracker/index.php?func=detail&aid=314643&group_id=168&atid=350207. But in the meantime, you can rewrite the above expression as:

for $currentItemName in name() return instance('types')/types/type[@typeID = $currentItemName]/label

Also, relying on the name() function can be dangerous, as it returns the lexical form of a QName, that is: prefix:local-name. Different authors can choose different prefixes but map them to the same namespace URI, so in general it is better to rely on local-name() and namespace-uri().

Alex

On Jan 18, 2010, at 4:35 PM, Jeremiah Jahn <[hidden email]> wrote:

I have a situation where I get the label of an item in an itemset from a different instance. I do this all over the place w/ repeats, and keep the name() as a variable to use to do the look up in my xpath [id = $name] kinda thing. I can't seem to figure out a way to do this with an itemset in a select1. Or is there a way to generate an set of items for use in a select1 using a repeat?

I've included an example of what I'm trying to do, I know it won't work, but will give you an idea of what I'm trying to accomplish. Thanks for any help.

<xforms:itemset nodeset="instance('view')/template-view/query/*[1]/*">
<xforms:variable name="currentItemName" select="name()"/>
<xforms:label ref="xxforms:attribute(name(),instance('types')/types/type[@typeID = $currentItemName]/label)"/>
<xforms:value ref="xxforms:attribute(name(),name())"/>
</xforms:itemset>

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