relevant_group.xml

<?xml version="1.0"?>
<h:html xmlns="http://www.w3.org/2002/xforms" xmlns:ev="http://www.w3.org/2001/xml-events" xmlns:h="http://www.w3.org/1999/xhtml" xmlns:jr="http://openrosa.org/javarosa" xmlns:orx="http://openrosa.org/xforms" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:oc="http://openclinica.org/xforms">
  <h:head><!-- ODK Aggregate upload time: 2017-07-11T21:43:45.170+0000 on https://enketo-aggregate.appspot.com -->
    <h:title>relevant-group</h:title>
    <model>
      <instance>
        <data id="relevant-group">
          <something/>
          <rep jr:template="">
            <val/>
            <val_comment>{"a": "b"}</val_comment>
            <calc/>
            <skipq/>
          </rep>
          <meta>
            <instanceID/>
          </meta>
        </data>
      </instance>
      <bind constraint="string-length(.) &gt; 10" nodeset="/data/something"  required="true()" type="string"/>
      <bind nodeset="/data/rep" relevant=" /data/something  != ''" oc:relevantMsg="relevant if something is not empty"/>
      <bind constraint="string-length(.) &gt; 10" nodeset="/data/rep/val"  required="true()" type="string"/>
      <bind nodeset="/data/rep/val_comment" enk:for="/data/rep/val"  type="string"/>
      <bind nodeset="/data/rep/calc" enk:for="/data/rep/val" calculate="2+2" type="string"/>
      <bind constraint="string-length(.) &gt; 2"  nodeset="/data/rep/skipq"  required="true()" type="int"/>
      <bind calculate="concat('uuid:', uuid())" nodeset="/data/meta/instanceID" readonly="true()" type="string"/>
    </model>
  </h:head>
  <h:body>
    <input ref="/data/something">
      <label>something with a relevant that will be cached</label>s
    </input>
    <group ref="/data/rep">
      <label></label>
      <repeat nodeset="/data/rep">
        <input ref="/data/rep/val">
          <label>enter value</label>
        </input>
        <input ref="/data/rep/val_comment" appearance="dn">
          <label>enter value</label>
        </input>
        <input ref="/data/rep/skipq">
          <label>enter number</label>
        </input>
      </repeat>
    </group>
  </h:body>
</h:html>