problem with constraints for numeric values

> Hi,
>
> i think i have a noob problem, but i cant find the solution. My Goal is to
> have a constraint that says  value "a" should be <=  "b".  If i set value a
> = 2 and b > 9 the constraint seems to be broken. I try differenct types, but
> nothing helps. What i have to do to make this work right.? i add my testpage
> for the Sandbox. Hope someone can help me.
>
> all the best Benjamin
>
>
>
>
> --
> 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
>
>

> Benjamin,
>
> A couple of issues with your code:
>
> 1. xforms:bind doesn't support @ref. Instead, use @nodeset.
>
> (We do have a loose plan to optionally better validate XForms input to
> detect that kind of situations. Also, we do think that XForms should
> support xforms:bind/@ref.)
>
> 2. See the following note from XPath 2.0: [1]
>
> "In XPath 1.0, the < and > operators, when applied to two strings,
> attempted to convert both the strings to numbers and then made a
> numeric comparison between the results. In XPath 2.0, these operators
> perform a string comparison using the default collating sequence. (If
> either value is numeric, however, the results are compatible with
> XPath 1.0)"
>
> Instead, use the lt, le, gt, and ge operators, which operate on numeric types.
>
> Your example becomes:
>
> <xforms:bind nodeset="a" type="xforms:integer" constraint="/root/a lt /root/b"/>
> <xforms:bind nodeset="b" type="xforms:integer" constraint="/root/b gt /root/a"/>
>
> You could also write:
>
> <xforms:bind nodeset="a" type="xforms:integer" constraint=". lt ../b"/>
> <xforms:bind nodeset="b" type="xforms:integer" constraint=". gt ../a"/>
>
> -Erik
>
> [1] http://www.w3.org/TR/xpath20/
>
> On Thu, Feb 18, 2010 at 5:37 PM, Benjamin Jehle
> <[hidden email]> wrote:
>  
>> Hi,
>>
>> i think i have a noob problem, but i cant find the solution. My Goal is to
>> have a constraint that says  value "a" should be <=  "b".  If i set value a
>> = 2 and b > 9 the constraint seems to be broken. I try differenct types, but
>> nothing helps. What i have to do to make this work right.? i add my testpage
>> for the Sandbox. Hope someone can help me.
>>
>> all the best Benjamin
>>
>>
>>
>>
>> --
>> 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
>>
>>
>>    

>
>> 2. See the following note from XPath 2.0: [1]..
>>
>
> Wow that explains the strange behave. Thx a lot for your help.
>
> All the best Benjamin
>
> Erik Bruchez schrieb:
>>
>> Benjamin,
>>
>> A couple of issues with your code:
>>
>> 1. xforms:bind doesn't support @ref. Instead, use @nodeset.
>>
>> (We do have a loose plan to optionally better validate XForms input to
>> detect that kind of situations. Also, we do think that XForms should
>> support xforms:bind/@ref.)
>>
>> 2. See the following note from XPath 2.0: [1]
>>
>> "In XPath 1.0, the < and > operators, when applied to two strings,
>> attempted to convert both the strings to numbers and then made a
>> numeric comparison between the results. In XPath 2.0, these operators
>> perform a string comparison using the default collating sequence. (If
>> either value is numeric, however, the results are compatible with
>> XPath 1.0)"
>>
>> Instead, use the lt, le, gt, and ge operators, which operate on numeric
>> types.
>>
>> Your example becomes:
>>
>> <xforms:bind nodeset="a" type="xforms:integer" constraint="/root/a lt
>> /root/b"/>
>> <xforms:bind nodeset="b" type="xforms:integer" constraint="/root/b gt
>> /root/a"/>
>>
>> You could also write:
>>
>> <xforms:bind nodeset="a" type="xforms:integer" constraint=". lt ../b"/>
>> <xforms:bind nodeset="b" type="xforms:integer" constraint=". gt ../a"/>
>>
>> -Erik
>>
>> [1] http://www.w3.org/TR/xpath20/
>>
>> On Thu, Feb 18, 2010 at 5:37 PM, Benjamin Jehle
>> <[hidden email]> wrote:
>>
>>>
>>> Hi,
>>>
>>> i think i have a noob problem, but i cant find the solution. My Goal is
>>> to
>>> have a constraint that says  value "a" should be <=  "b".  If i set value
>>> a
>>> = 2 and b > 9 the constraint seems to be broken. I try differenct types,
>>> but
>>> nothing helps. What i have to do to make this work right.? i add my
>>> testpage
>>> for the Sandbox. Hope someone can help me.
>>>
>>> all the best Benjamin
>>>
>>>
>>>
>>>
>>> --
>>> 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
>>>
>>>
>>>
>
>
>
> --
> 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
>
>