[DAFFODIL-2304] hiddenGroupRef in group is dropped during unparse

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.6.0
• Component/s: Front End
• Assignee: Steve Lawrence
• Reporter: Olabusayo Kilo
• Created: 25/Mar/20 14:40
• Updated: 08/Apr/20 21:08
• Resolved: 27/Mar/20 16:03

Description

HiddenGroupRef's in a group without a sequence tag (i.e s6 instead of s5) will result in s6 being dropped in an unparse test case (see test_ignoredHiddenGroupRefWithNoSequenceParent), with a "DFDL 

 

<xs:group name="s5">
  <xs:sequence>
    <xs:sequence dfdl:hiddenGroupRef="ex:s4" />
  </xs:sequence>
</xs:group>
<xs:group name="s6">
  <xs:sequence dfdl:hiddenGroupRef="ex:s4" />
</xs:group>

<xs:element name="e9" dfdl:lengthKind="delimited">
  <xs:complexType>
    <xs:sequence dfdl:separator=",">
      <xs:sequence dfdl:hiddenGroupRef="ex:s6" />
      <xs:element name="g" type="xs:int"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

With some preliminary investigating, I narrowed it down to how children are extracted with apparentXMLChildren in SequenceGroup.scala. There may be implications to changing this that needs to be investigated.