[jira] [Created] (DAFFODIL-2110) Cannot change bitorder mid schema

["Brandon Sloane (JIRA)" <ji...@apache.org>]

Brandon Sloane created DAFFODIL-2110:
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             Summary: Cannot change bitorder mid schema
                 Key: DAFFODIL-2110
                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2110
             Project: Daffodil
          Issue Type: Bug
          Components: Back End
    Affects Versions: 2.4.0
            Reporter: Brandon Sloane
            Assignee: Brandon Sloane
         Attachments: BitOrder.tdml

Setting the bitOrder in the middle of a schema appears to have no effect.

Consider the following schema:
{quote}<xs:element name="changeOnSequence" dfdl:lengthKind='implicit'>
 <xs:complexType>
 <xs:sequence>
 <xs:sequence dfdl:bitOrder="mostSignificantBitFirst">
 <xs:element name="A" type="xs:unsignedInt" dfdl:length="8"/>
 <xs:element name="B" type="xs:unsignedInt" dfdl:length="8"/>
 </xs:sequence>
 <xs:sequence dfdl:bitOrder="leastSignificantBitFirst" dfdl:byteOrder="littleEndian">
 <xs:element name="C" type="xs:unsignedInt" dfdl:length="8" dfdl:bitOrder="leastSignificantBitFirst" dfdl:byteOrder="littleEndian"/>
 <xs:element name="D" type="xs:unsignedInt" dfdl:length="8"/>
 </xs:sequence>
 </xs:sequence>
 </xs:complexType>
 </xs:element>
{quote}
With the following test:
{quote}<tdml:parserTestCase name="bitOrderChangeOnSequence"
 root="changeOnSequence" model="s6" description="Tests changing bitOrder when on a byte boundary.">
 <document xmlns="http://www.ibm.com/xmlns/dfdl/testData">
 <documentPart type="bits">
 0000 0001
 0000 0001
 1000 0000
 1000 0000
 </documentPart>
 </document>
 <tdml:infoset>
 <tdml:dfdlInfoset xmlns:xs="http://www.w3.org/2001/XMLSchema"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://example.com">
 <changeOnSequence>
 <A>1</A>
 <B>1</B>
 <C>1</C>
 <D>1</D>
 </changeOnSequence>
 </tdml:dfdlInfoset>
 </tdml:infoset>
 </tdml:parserTestCase>
{quote}
(both snippets are in attached tdml as test name bitOrderChangeOnSequence. The attached TDML is an uncommited modified version of section05/simple_types/BitOrder.tdml )

The actual result of parsing is:
{quote}<changeOnSequence>

<A>1</A>

<B>1</B>

<C>128</C>

<D>128</D>

</changeOnSequence>
{quote}
Note that the above schema attempts to change the bit order in 2 different ways:

1) On a sequence, and

2) On an element itself.

Neither approach has any results.

A possibly related issue is that ommiting the dfdl:byteOrder="littleEndian" on the xs:element results in an SDE, despite the fact that such is set on the enclosing sequence.



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