[DFDL-WG] clarification wanted: fixed values

The spec states that the fixed facet is only used for validation. That is, it works like default in that it supplies a default that can be used when parsing and unparsing, but the comparison of an existing data value with the schema-specified fixed value is only done for validation. This means that a value not agreeing with the fixed value specified in the schema would never cause backtracking. Is this right? It seems awkward to me that I have to use a dfdl:assert annotation to achieve this. That said, however, I can achieve the behaviour I need. it's just more verbose than I wanted. Is this what the current IBM implementation does? Thanks -- Mike Beckerle | OGF DFDL WG Co-Chair Tel: 781-330-0412