iterating over multi-value field

>
> Hi! I've been looking for info on this: say I have a field that is a
> delimited multi value field (created by a select), for example:
>  <selected-items>two four five eight ten</selected-items>
>
> Is there a way to perform an action for each value in the field? For that
> matter, is there a syntax for referring to a single value in a delimited
> multi value field?
>
> I've not been able to find mention of this anywhere, so any help would be
> appreciated. Basically, what I'm trying to do is to insert various nodes
> based on the value generated by the <select>, without having to create an
> individual action for each.
>
> -----
> -- Francis
> --
> View this message in context:  
> http://orbeon-forms-ops-users.24843.n4.nabble.com/iterating-over-multi-value-field-tp2245381p2245381.html
> Sent from the Orbeon Forms (ops-users) mailing list archive at Nabble.com.
>

>
>
> Hi Francis,
>
> You can use XPath 2.0 functions in many ways in Orbeon,
> for example, to create elements from a space separated
> string:
>
> <xforms:repeat nodeset="for $s in
>   tokenize(instance('selected-items'),'\s')
> return xxforms:element('text',$s)">
> ...
> </xforms:repeat>
>
> And you may now actually be able to repeat over
> sequences ... trouble finding that post.
>
> Cheers,
> Hank

> Hank - thanks so much for your reply! But as a newbie to XForms, I  
> have another question about this:
> Do you mean that to create an action for each element created by the  
> XPath expression, I should do something like this:
>
> <xforms:repeat nodeset="for $s in  
> tokenize(instance('selected-items'),'\s') return    
> xxforms:element('text',$s)">
> <xforms:action while="text">
>     ....
> </xforms:action>
> </xforms:repeat>
>
> --- Francis
>
> On 6/7/2010 6:41 PM, Louis Ratzesberger wrote:
>>
>>
>> Hi Francis,
>>
>> You can use XPath 2.0 functions in many ways in Orbeon,
>> for example, to create elements from a space separated
>> string:
>>
>> <xforms:repeat nodeset="for $s in
>>  tokenize(instance('selected-items'),'\s')
>> return xxforms:element('text',$s)">
>> ...
>> </xforms:repeat>
>>
>> And you may now actually be able to repeat over
>> sequences ... trouble finding that post.
>>
>> Cheers,
>> Hank
>
>
>

>
>
> Louis Ratzesberger-2 wrote:
>>
>> Perhaps you are trying to do something in a complicated way
>> that XForms can actually do in a simpler way.  I can think of some
>> scenarios, but remind us why you need to perform an action
>> for each item in space separated string?
>>
> Hank - I was wondering if those "created" elements had to be "put"
> somewhere!
>
> It just seemed to me that doing something with the "multi-value" produced by
> a select control would be something useful. If it wasn't possible, wouldn't
> only an "external" application be able to do something with that data?
> (parse it)
>
>
> I was looking for an alternative to using a separate triggers to insert
> nodes.  If a select control has 5 choices, generating values 'val1 through
> 'val5, it can produce a value like "val1 val3 val5". I'd like the user to be
> able to insert different nodes (to a node in the main instance) via a menu.
>
>
> To do this, instead of having 5 triggers: trigger1: insert node1; trigger2:
> insert node2, trigger3: insert node3... I was wondering if it's possible to
> have something the equivalent of:
>
> for each $value in multivalue ("val1 val3 val5"):
> action: if $value=val1, insert node1;
> if $value=val2, insert node2;
> if $value=val3, insert node3;
> if $value=val4, insert node4;
> if $value=val5, insert node5;
>
> I don't know if this would actually be simpler in every case, it just seems
> like it would allow a select control to actually act on the data just
> created.
>
> Would the answer be something simple like this:
> if (multivalue) "val1 val3 val5" contains('val1'), insert node1;
> if "val1 val3 val5" contains('val2'), insert node2;
> ....
>
> I forget what the XPath equivalent to "contains()" would be. Is it
> xforms:action or xforms:insert that can take an "if" attribute (my memory's
> foggy on this?)
>
>
>
> -----
> -- Francis
> --
> View this message in context:  
> http://orbeon-forms-ops-users.24843.n4.nabble.com/iterating-over-multi-value-field-tp2245381p2247271.html
> Sent from the Orbeon Forms (ops-users) mailing list archive at Nabble.com.
>

> Hank - thanks so much for your reply! But as a newbie to XForms, I have
> another question about this:
> Do you mean that to create an action for each element created by the XPath
> expression, I should do something like this:
>
> <xforms:repeat nodeset="for $s in tokenize(instance('selected-items'),'\s')
> return   xxforms:element('text',$s)">
> <xforms:action while="text">
>    ....
> </xforms:action>
> </xforms:repeat>
>
> --- Francis
>
> On 6/7/2010 6:41 PM, Louis Ratzesberger wrote:
>>
>>
>> Hi Francis,
>>
>> You can use XPath 2.0 functions in many ways in Orbeon,
>> for example, to create elements from a space separated
>> string:
>>
>> <xforms:repeat nodeset="for $s in
>>  tokenize(instance('selected-items'),'\s')
>> return xxforms:element('text',$s)">
>> ...
>> </xforms:repeat>
>>
>> And you may now actually be able to repeat over
>> sequences ... trouble finding that post.
>>
>> Cheers,
>> Hank
>
>
>
>
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