I want an xforms:insert to occur following a hidden value change. I've set up an instance (temp-instance) to hold the value I want to observe for an xxforms-value-changed event. The event actions an insert into the destination-instance. Also on the form I have a 'hidden' control with relevance set to false(). Subsequent to the insert occurring the relevance flag is ignored. This doesn't appear to occur with other actions being triggered (such as an xforms:setvalue).
Is this a bug?
See FR example below which updates the temp-instance with the content of the 'input' control.
<xh:html xmlns:xh="http://www.w3.org/1999/xhtml" xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:ev="http://www.w3.org/2001/xml-events"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xxi="http://orbeon.org/oxf/xml/xinclude"
xmlns:xxf="http://orbeon.org/oxf/xml/xforms"
xmlns:exf="http://www.exforms.org/exf/1-0"
xmlns:fr="http://orbeon.org/oxf/xml/form-runner"
xmlns:saxon="http://saxon.sf.net/"
xmlns:sql="http://orbeon.org/oxf/xml/sql"
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:fb="http://orbeon.org/oxf/xml/form-builder">
<xh:head>
<xh:title>Untitled Form</xh:title>
<xf:model id="fr-form-model" xxf:expose-xpath-types="true">
<!-- Main instance -->
<xf:instance id="fr-form-instance">
<form>
<section-1>
<input/>
<hidden>Output</hidden>
</section-1>
</form>
</xf:instance>
<!-- Temporary instance -->
<xf:instance id="temp-instance">
<temp>
<copy/>
</temp>
</xf:instance>
<!-- Template instance -->
<xf:instance id="template-instance">
<template>
<extra/>
</template>
</xf:instance>
<!-- Destination instance -->
<xf:instance id="destination-instance">
<destination/>
</xf:instance>
<!-- Bindings -->
<xf:bind xmlns:dataModel="java:org.orbeon.oxf.fb.DataModel" id="fr-form-binds"
ref="instance('fr-form-instance')">
<xf:bind id="section-1-bind" name="section-1" ref="section-1">
<xf:bind id="input-bind" name="input" ref="input"/>
<xf:bind id="hidden-bind" ref="hidden" name="hidden" relevant="false()"/>
</xf:bind>
</xf:bind>
<xf:bind xmlns:dataModel="java:org.orbeon.oxf.fb.DataModel" id="temp-binds"
ref="instance('temp-instance')">
<xf:bind id="copy-bind" name="copy" ref="copy" calculate="$input"/>
</xf:bind>
<!-- Metadata -->
<xf:instance xxf:readonly="true" id="fr-form-metadata">
<metadata>
<application-name>test</application-name>
<form-name>example</form-name>
<title xml:lang="en">Untitled Form</title>
<description xml:lang="en"/>
</metadata>
</xf:instance>
<!-- All form resources -->
<!-- Don't make readonly by default in case a service modifies the resources -->
<xf:instance id="fr-form-resources" xxf:readonly="false">
<resources>
<resource xml:lang="en">
<section-1>
<label>Section</label>
</section-1>
<input>
<label>Input</label>
<hint/>
</input>
<hidden>
<label>Hidden</label>
<hint/>
</hidden>
</resource>
</resources>
</xf:instance>
<xf:action id="insert-extra-binding">
<xf:action ev:event="xxforms-value-changed" ev:observer="temp-instance" if="true()">
<xf:insert context="instance('destination-instance')"
origin="instance('template-instance')"/>
</xf:action>
</xf:action>
</xf:model>
</xh:head>
<xh:body>
<fr:view>
<fr:body xmlns:xbl="http://www.w3.org/ns/xbl"
xmlns:dataModel="java:org.orbeon.oxf.fb.DataModel"
xmlns:oxf="http://www.orbeon.com/oxf/processors"
xmlns:p="http://www.orbeon.com/oxf/pipeline">
<fr:section id="section-1-control" bind="section-1-bind">
<xf:label ref="$form-resources/section-1/label"/>
<fr:grid>
<xh:tr>
<xh:td>
<xf:input id="input-control" bind="input-bind">
<xf:label ref="$form-resources/input/label"/>
<xf:hint ref="$form-resources/input/hint"/>
<xf:alert ref="$fr-resources/detail/labels/alert"/>
</xf:input>
</xh:td>
<xh:td>
<xf:output id="hidden-control" bind="hidden-bind">
<xf:label ref="$form-resources/hidden/label"/>
<xf:hint ref="$form-resources/hidden/hint"/>
<xf:alert ref="$fr-resources/detail/labels/alert"/>
</xf:output>
</xh:td>
</xh:tr>
</fr:grid>
</fr:section>
</fr:body>
</fr:view>
</xh:body>
I just tried your example and I do see that it seems to behave a bit curiously!
I reproduce this with a simpler example:
<xh:html
xmlns:ev="http://www.w3.org/2001/xml-events"
xmlns:fr="http://orbeon.org/oxf/xml/form-runner"
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:xh="http://www.w3.org/1999/xhtml"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xxf="http://orbeon.org/oxf/xml/xforms">
<xh:head>
<xf:model>
<xf:instance id="instance">
<hidden>I am supposed to be hidden!</hidden>
</xf:instance>
<xf:bind ref="instance()" relevant="false()"/>
<xf:instance id="copy-instance">
<copy/>
</xf:instance>
<xf:bind ref="instance('copy-instance')" calculate="42"/>
<xf:instance id="destination-instance">
<destination/>
</xf:instance>
<xf:insert
event="xxforms-value-changed"
observer="copy-instance"
context="instance('destination-instance')"
origin="xf:element('foo')"/>
</xf:model>
</xh:head>
<xh:body>
<xf:output ref="instance()"/>
</xh:body>
</xh:html>
I added an issue:
https://github.com/orbeon/orbeon-forms/issues/1568
UPDATE 2024-08-16: This has been fixed as part of #6442.