Re: Xpath expression with a variable predicate in binding cforms

[Joerg Heinicke]

On 01.05.2004 20:45, Isidro Vila Verde wrote:

Sorry if this is a FAQ, but I am in my first steps into cocoon and cforms
and all (almost) is new to me.
No, it is not a FAQ, I read it the first time.

I have this XML data 

<root>
<hab tipo="QD" quant="2"/>
<hab tipo="QS" quant="3"/>
<precos>
  <elem hab="QD" val="30" unit="Euro"/>
  <elem hab="QS" val="25" unit="Euro"/>
</precos>
</root>
That I wanto to bind with something like this

        <fb:repeater id="hab" parent-path="." row-path="hab">
                <fb:identity>
                        <fb:value id="id" path="@id"></fb:value>
                </fb:identity>
                <fb:on-bind>
                        <fb:value id="tipo" path="@tipo"/>
                        <fb:value id="n" path="@quant">
                                <fd:convertor datatype="integer"/>
                        </fb:value>
                        <fb:value id="preco"
path="../precos/[EMAIL PROTECTED]/@val">
                                <fd:convertor datatype="integer"/>
                        </fb:value>
                </fb:on-bind>
        </fb:repeater>
Where VARIABLE must be the value of @tipo from current node (hab).
How can I do this. Are there any possibility to refer to value o 'tipo'?
Something like we do with xsl:variable in XSL?
I know that the underlying framework JXPath supports variables and so it 
may be possible to add such functionality, but I don't see how you can 
do it at the moment. I guess you have to preprocess your XML structure 
with an XSLT.

Joerg

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