Iterating over inserts on xforms-ready event

---

From: Henrik Pettersen [mailto:[hidden email]]
Sent: 10 November 2006 10:59
To: [hidden email]
Subject: Re: [ops-users] Iterating over inserts on xforms-ready event

Silly formatting. Let's try again:
---------------------------------------------

Ryan,

that is an excellent suggestion! Allow me to paraphrase a little bit:

Question:  How do I iterate over an activity, inside an <action> element ?

Answer:     1. <xforms:repeat> is for display use only, and is not allowed inside <action> elements
                  2. Instead, use <xforms:dispatch>
                         2.1 with @name = the @name of the containing action
                         2.2 with @if for the termination test

I did not realize that @at and @position were required for <xforms:insert> (OPS throws no exception). Much obliged.

Thanks, Ryan!

Henrik

On 11/10/06, Henrik Pettersen <[hidden email]> wrote:

Ryan,

that's an excellent suggestion! Allow me to paraphrase a little bit:

Question:  How do I iterate over an activity, inside an <action> element ?

Answer:     1. <xforms:repeat> is for display use only, and is not
allowed inside
                     <action> elements
                 2. Instead, use <xforms:dispatch>
                        2.1 with @name = the @name of the containing
action (recursion)
                        2.2 with @if for the termination test

I did not realize that @at and @position were required. Much obliged.

Thanks, Ryan!

Henrik

PS! Sorry, the 'rule-instance' instead of 'instance' slipped in
because they were commented out. My mistake.


On 11/10/06, Ryan Puddephatt <[hidden email]> wrote:

> Henrik,
>         an xforms:repeat is only used for displaying items, this won't work.
> You will need to create a custom action in the model that loops and gets
> call from your xforms-ready event
>
> Something like
>
> <xforms:action ev:event="create-instance">
>    <xforms:insert context="instance('test-expression')"
>         nodeset="aspic:inputs" origin="instance('test-expression-template')"
>         at="last()" position="after"/>
>    <xforms:setvalue ref="instance('control-instance')/counter"
> value="xs:integer(instance('control-instance')) + 1"/>
>    <xforms:dispatch name="create-instance" target="model-id"
>         if="xs:integer(instance('control-instance')) gt
> count(instance('rule-instance')/aspic:premise"/>
> </xforms:action>
>
> I have created a control-instance to hold a counter so you know how many it
> has created, this will need to be 1 when starting, probably best to do that
> in xforms-ready as well!
>
> Also you didn't have the required @at and @position in your xforms:insert
> previously. There wasn't a rule-instance in your example, only an instance!
>
> Ryan Puddephatt
> Software Engineer
>
> Teleflex Group - IT UK
> 1 Michaelson Square
> Livingston
> West Lothian
> Scotland
> EH54 7DP
>
> e> [hidden email]
> t> +44(0)1506 407 110
> f> +44(0)1506 407 108
>
>
>
> >-----Original Message-----
> >From: Henrik Pettersen [mailto: [hidden email]]
> >Sent: 09 November 2006 15:17
> >To: [hidden email]
> >Subject: [ops-users] Iterating over inserts on xforms-ready event
> >
> >All,
> >
> >I am having some problems in preparing my instance when the
> >page is done loading (on 'xforms-ready' event):
> >
> >Here is what I want to do:
> >==================
> >For each 'premise' node in the instance 'instance', insert the
> >'test-expression-template' into the 'test-expression' instance
> >(See attached for example that will run in sandbox):
> >
> >    <xforms:instance id="instance">
> >        <aspic:rule>
> >            <aspic:premise>First Premise</aspic:premise>
> >            <aspic:premise>Second Premise</aspic:premise>
> >        </aspic:rule>
> >    </xforms:instance>
> >
> >    <xforms:instance id="test-expression-template">
> >        <aspic:input>
> >            <aspic:expression/>
> >        </aspic:input>
> >    </xforms:instance>
> >
> >    <xforms:instance id="test-expression">
> >        <aspic:inputs>
> >
> >             <!-- insert 1 'test-expression-template' for each
> >occurens of
> >                   aspic:premise in 'instance' here -->
> >
> >            <aspic:input>
> >                <aspic:expression/>
> >            </aspic:input>
> >        </aspic:inputs>
> >    </xforms:instance>
> >
> >using ev:event="xforms-ready":
> >
> >    <xforms:repeat ev:event="xforms-ready"
> >
> >nodeset="instance('rule-instance')/aspic:premise"
> >                          id="premise-repeat2">
> >            <xforms:insert context="instance('test-expression')"
> >                                  nodeset="aspic:inputs"
> >
> >origin="instance('test-expression-template')"/>
> >    </xforms:repeat>
> >
> >
> >Desired output:
> >================
> > Insert [1]
> > Insert [2]
> >
> >
> > Actual output:
> > ===============
> > Insert [1]
> >
> >
> >My question is simple (but the answer might not be): How do I do this?
> >Has anyone done this before? Is this even possible, according
> >to the XForms specification / Orbeon implementation? I've
> >allready tried a few ideas, see attachment for details.
> >
> >Thank you for your help, everyone!
> >
> >Sincerely,
> >Henrik Pettersen
> >Advanced Computational Laboratory
> >Cancer Research UK
> >
>
>
>
>
>
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