Simple xpath question

> Hi,
>
> I have what I hope is a simple xpath question. I want to combine  
> the contents of several text nodes to form a space separated list  
> (so that later I can pass it to a xforms:select control).
>
> <xforms:instance id="books">
> <books xmlns="">
> <book>
> <author>Adam</author>
> </book>
> <book>
> <author>Jones</author>
> </book>
> </books>
> </xforms:instance>
>
> <xforms:instance id="control">
> <data xmlns="">
> <authors/>
> </data>
> </xforms:instance>
>
> I would like to bind the control instance to list all the authors.
> e.g.
> <xforms:bind nodeset="instance('control')/authors"  
> calculate="instance('books')//author"/>
>
> However if I do this I only get the first item
> <xforms:instance id="control">
> <data xmlns="">
> <authors>Adam</authors>
> </data>
> </xforms:instance>
>
> What I want is:
> <authors>Adam Jones</authors>
>
> I tried calculate="data(instance('books')//author)" but it still  
> gives me the same answer.
> How can I achieve this?
>
> Regards,
> Chris.
>
>
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>
> Hi Chris,
>
> How about:
>
>  calculate="string-join( instance('books')//author, ' ' )
>
> (you may need author/text() )
>
> Cheers,
> Hank
>
> On Aug 18, 2008, at 3:25 AM, Chris Bailey wrote:
>
>> Hi,
>>
>> I have what I hope is a simple xpath question. I want to combine the
>> contents of several text nodes to form a space separated list (so that
>> later I can pass it to a xforms:select control).
>>
>> <xforms:instance id="books">
>>     <books xmlns="">
>>         <book>
>>             <author>Adam</author>
>>         </book>
>>         <book>
>>             <author>Jones</author>
>>         </book>
>>     </books>
>> </xforms:instance>
>>
>> <xforms:instance id="control">
>>     <data xmlns="">
>>         <authors/>
>>     </data>
>> </xforms:instance>  
>>
>> I would like to bind the control instance to list all the authors.
>> e.g.
>> <xforms:bind nodeset="instance('control')/authors"
>> calculate="instance('books')//author"/>
>>
>> However if I do this I only get the first item
>> <xforms:instance id="control">
>>     <data xmlns="">
>>         <authors>Adam</authors>
>>     </data>
>> </xforms:instance>  
>>
>> What I want is:
>> <authors>Adam Jones</authors>
>>
>> I tried calculate="data(instance('books')//author)" but it still gives
>> me the same answer.
>> How can I achieve this?
>>
>> Regards,
>> Chris.
>>
>>
>> --
>> You receive this message as a subscriber of the [hidden email]
>> mailing list.
>> To unsubscribe: mailto:[hidden email]
>> For general help: mailto:[hidden email]?subject=help
>> OW2 mailing lists service home page: http://www.ow2.org/wws
>
> Hank Ratzesberger
> NEES@UCSB
> Institute for Crustal Studies,
> University of California, Santa Barbara
> 805-893-8042
>
>
>
>
>

> Hi Betty,
>
> On Fri, Aug 29, 2008 at 6:06 AM, Betty Harvey <[hidden email]> wrote:
>> Value1 in the codelist is the dropdown for the user to select a value.
>> When they select the value I want the rest of the values from the
>> Codelist
>> populate the tree.
>>
>> I have been able to accomplish this by putting a trigger and
>> having the user hit save but I want this to be done 'under the covers'.
>
> I am not sure I understand exactly what you mean by "populate the tree",
> but if you have an action (or sequence of actions) that run upon
> DOMActivate on a trigger, you should be able to run the same sequence
> upon xforms-value-changed on the drop-down, so it runs right away as
> soon as a value is selected. Does this help in your case?
>
> Alex
> --
> Orbeon Forms - Web 2.0 Forms, open-source, for the Enterprise
> Orbeon's Blog: http://www.orbeon.com/blog/
> Personal Blog: http://avernet.blogspot.com/
> Twitter - http://twitter.com/avernet
>
>

> On Wed, Sep 3, 2008 at 6:51 AM, Betty Harvey <[hidden email]> wrote:
>> I am able to populate using a trigger but I want the values to
>> dynamically
>> be populated from another instance (code list) without user interaction.
>
> So if I understand this correctly, you would like to do this before the
> form is sent to the browser. If that is the case, you can add an
> <xforms:action ev:event="xforms-model-construct-done"> inside the
> <xforms:model>. Inside this action, you can perform the
> <xforms:setvalue> that populate one instance based on the content of
> another instance.
>
> Sometimes XSLT can be another way to do the same thing. We have been
> using XSLT in the past even more heavily than we do now (if you can
> believe that!), but in general we are trying to limit the number of XSLT
> transformations needed to generate a page, for performance reasons. It
> also makes things simpler architecturally if you can look at your pages
> as "just XForms calling REST services".
>
> Alex
> --
> Orbeon Forms - Web 2.0 Forms, open-source, for the Enterprise
> Orbeon's Blog: http://www.orbeon.com/blog/
> Personal Blog: http://avernet.blogspot.com/
> Twitter - http://twitter.com/avernet
>
>

> It is the other way around.  I want to populate the XML before it gets
> sent to the database.  I have a code list that has the following  
> fields:
>
>    <Row>
>        <ContainerCode>AER-A</ContainerCode>
>         <ContainerDescription>Aerial Film Can,
> Standard</ContainerDescription>
>         <Depth>5.5</Depth>
>         <Width>5.5</Width>
>         <Height>10</Height>
>         <TotalCubicFoot>10</TotalCubicFoot>
>      </Row>
>
> The code list is used to populate another XML structure:
>
> <ContainerInformation>
>            <Container>
>                <ContainerType/>
>                <ContainerDimensions>
>                    <Height/>
>                    <Width/>
>                    <Depth/>
>                </ContainerDimensions>
>                <Quantity/>
>             </Container>
>  </ContainerInformation>
>
> The user selected the <ContainerDescription> then the dimensions
> should be populated from the source code.  In XSLT this is
> trivial that is why I am thinking I am missing a key concept.
>
> I would prefer to do this in XForms because I am trying to see how
> far we can go with XForms as a 'proof of concept' without using
> other technologies, i.e. XSLT, JScript, etc.
>
> Thanks!
>
> Betty
>
> <quote who="Alessandro Vernet">
>> On Wed, Sep 3, 2008 at 6:51 AM, Betty Harvey <[hidden email]>  
>> wrote:
>>> I am able to populate using a trigger but I want the values to
>>> dynamically
>>> be populated from another instance (code list) without user  
>>> interaction.
>>
>> So if I understand this correctly, you would like to do this before  
>> the
>> form is sent to the browser. If that is the case, you can add an
>> <xforms:action ev:event="xforms-model-construct-done"> inside the
>> <xforms:model>. Inside this action, you can perform the
>> <xforms:setvalue> that populate one instance based on the content of
>> another instance.
>>
>> Sometimes XSLT can be another way to do the same thing. We have been
>> using XSLT in the past even more heavily than we do now (if you can
>> believe that!), but in general we are trying to limit the number of  
>> XSLT
>> transformations needed to generate a page, for performance reasons.  
>> It
>> also makes things simpler architecturally if you can look at your  
>> pages
>> as "just XForms calling REST services".
>>
>> Alex
>> --
>> Orbeon Forms - Web 2.0 Forms, open-source, for the Enterprise
>> Orbeon's Blog: http://www.orbeon.com/blog/
>> Personal Blog: http://avernet.blogspot.com/
>> Twitter - http://twitter.com/avernet
>>
>>
>
>
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