Bind order

gistfile1.xml

<xhtml:html xmlns:xhtml="http://www.w3.org/1999/xhtml"
      xmlns:xforms="http://www.w3.org/2002/xforms"
      xmlns:xxforms="http://orbeon.org/oxf/xml/xforms"
      xmlns:ev="http://www.w3.org/2001/xml-events"
      xmlns:xs="http://www.w3.org/2001/XMLSchema"
      xmlns:fr="http://orbeon.org/oxf/xml/form-runner">
    <xhtml:head>
        <xhtml:title>Bind order</xhtml:title>
        <xforms:model>
            <xforms:instance id="form">
                <instance>
                    <some-node/>
                </instance>
            </xforms:instance>
            <xforms:bind nodeset="instance('form')//*" required="true()"/>
            <xforms:bind nodeset="instance('form')/some-node" required="false()"/>
        </xforms:model>
    </xhtml:head>
    <xhtml:body>
        <xforms:input ref="some-node">
            <xforms:alert>Required</xforms:alert>
        </xforms:input>
    </xhtml:body>
</xhtml:html>