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Validation in Loop

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Vinith Gowda

Validation in Loop

Hi,

The problem here might be simple but an immediate response is expected from here,

Consider i have 2 instances,

<xforms:instance id="credentials-instance">
<instance>
<Ids>
<Id>IDENTITY1</Id>
<Id>IDENTITY2</Id>
<Id>IDENTITY3</Id>
<Id>IDENTITY4</Id>
<Id>IDENTITY5</Id>
<Id>IDENTITY6</Id>
</Ids>
</instance>
</xforms:instance>

<xforms:instance id="create-credential-instance">
<instance>
<newID/>
</instance>
</xforms:instance>

Now I have a text input field for

<xforms:input ref="instance('create-credential-instance')//newID" />

I have to validate such that the entered value should not match for any of the Id in credentials-instance

I have written a Bind but is not working please help

<xforms:bind nodeset="instance('create-credential-instance')//newID" required="true()" constraint="if (.!='') then (. != instance('credentials-instance')//Ids/Id) else true()"/>

Thanks,
Vinith Gowda.

Erik Bruchez-3

Re: Validation in Loop

Vinith,

I think that something like this should work:

<xforms:bind nodeset="instance('create-credential-instance')/newID"
required="true()"
constraint=". = '' or not(. = instance('credentials-instance')/Ids/Id))"/>

The "=" in XPath is interesting: here it compares (after so-called
atomization) an atomic value (the string value in newID) with a
sequence of values (the string values in Id). The comparison returns
true() if at least one of the Id values is equal to the newId value.

When you use the != operator, the same goes: the comparison returns
true() if at least one of the Id values is *different* from the newId
value.

So instead of using !=, you want here to use not(... = ...).

-Erik

On Wed, Oct 28, 2009 at 11:54 PM, Vinith Gowda <[hidden email]> wrote:

>
> Hi,
>
> The problem here might be simple but an immediate response is expected from
> here,
>
> Consider i have 2 instances,
>
> <xforms:instance id="credentials-instance">
> <instance>
> <Ids>
> <Id>IDENTITY1</Id>
> <Id>IDENTITY2</Id>
> <Id>IDENTITY3</Id>
> <Id>IDENTITY4</Id>
> <Id>IDENTITY5</Id>
> <Id>IDENTITY6</Id>
> </Ids>
> </instance>
> </xforms:instance>
>
> <xforms:instance id="create-credential-instance">
> <instance>
> <newID/>
> </instance>
> </xforms:instance>
>
> Now I have a text input field for
>
> <xforms:input ref="instance('create-credential-instance')//newID" />
>
> I have to validate such that the entered value should not match for any of
> the Id in credentials-instance
>
> I have written a Bind but is not working please help
>
> <xforms:bind nodeset="instance('create-credential-instance')//newID"
> required="true()" constraint="if (.!='') then (. !=
> instance('credentials-instance')//Ids/Id) else true()"/>
>
>
> Thanks,
> Vinith Gowda.
>
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>
>
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Vinith Gowda

RE: [ops-users] Validation in Loop

This resolves my problem.

Thanks.

Best Regards,

Vinith Gowda.

From: Erik Bruchez-3 [via ObjectWeb OPS] [mailto:[hidden email]]
Sent: Saturday, October 31, 2009 6:59 AM
To: Vinith Gowda
Subject: Re: [ops-users] Validation in Loop

View message @ http://n4.nabble.com/Validation-in-Loop-tp277887p305309.html
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