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Read+Write to calculated bind

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Andrew Bailey

Read+Write to calculated bind

I have an element in the format <point>1 2 3</point>

which represents x y z coordinates, I cant change the schema.

I would like to edit the x y and z coords in 3 separate controls.

As I understand if there is a calculated bind it is always read only.

I have thought of writing xslt stylesheets on the server to transform it to a format

Let the user edit it

and then transform it back.

Is there any better way?

Thanks in advance.

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Andrew Bailey

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Erik Bruchez-3

Re: Read+Write to calculated bind

Andrew,

Re the calculated bind: the default is readonly, but you can change
that back using readonly="false()".

If you are using a recent build, you could write an XBL component to
handle this.

-Erik

On Tue, Dec 8, 2009 at 11:05 AM, Andrew Bailey <[hidden email]> wrote:

> I have an element in the format <point>1 2 3</point>
> which represents x y z coordinates, I cant change the schema.
>
> I would like to edit the x y and z coords in 3 separate controls.
>
> As I understand if there is a calculated bind it is always read only.
>
> I have thought of writing xslt stylesheets on the server to transform it to
> a format
> <point><x>1</x><y>2</y><z>3</z></point>
> Let the user edit it
> and then transform it back.
>
> Is there any better way?
>
> Thanks in advance.
>
> --
> Andrew Bailey
>
>
> --
> 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
>
>

Andrew Bailey

Re: Re: Read+Write to calculated bind

Eric,

Thanks for the reply

If I were to set readonly="false()" I think I would need to have, two functions: the exslt function str:tokenize to split the string "1 2 3" (is this supported in orbeon?) and the inverse concat to join them back again.

Is there any way to specify the calculate function and the inverse of the calculate in a bind, or using events?

Ill also look into writing a custom xbl component.

Thanks

Andy Bailey

Alessandro Vernet

Re: Re: Re: Read+Write to calculated bind

Administrator

Andy,

On Mon, Dec 28, 2009 at 12:12 PM, Andrew Bailey <[hidden email]> wrote:
> If I were to set readonly="false()" I think I would need to have, two
> functions: the exslt function str:tokenize to split the string "1 2 3" (is
> this supported in orbeon?) and the inverse concat to join them back again.

You can use tokenize(), which is an XPath 2.0 function:
http://www.w3.org/TR/xpath-functions/#func-tokenize
And the opposite would be string-join(), also standard in XPath 2.0:
http://www.w3.org/TR/xpath-functions/#func-string-join

> Is there any way to specify the calculate function and the inverse of the
> calculate in a bind, or using events?
> Ill also look into writing a custom xbl component.

You'll have to use events for that, and you can find some inspiration
in the fr:dropdown-dates which does something very similar as it
creates 3 drop-downs to edit a date stored as xs:date:

http://github.com/orbeon/orbeon-forms/blob/master/src/resources-packaged/xbl/orbeon/dropdown-date/dropdown-date.xbl

Alex
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