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https://issues.apache.org/jira/browse/DAFFODIL-2363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Beckerle updated DAFFODIL-2363:
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Labels: beginner (was: )
> pattern facet can't use  notation. Makes validating NUL very hard.
> ---------------------------------------------------------------------------
>
> Key: DAFFODIL-2363
> URL: https://issues.apache.org/jira/browse/DAFFODIL-2363
> Project: Daffodil
> Issue Type: Bug
> Components: Back End
> Affects Versions: 2.7.0
> Reporter: Mike Beckerle
> Priority: Critical
> Labels: beginner
> Fix For: 3.0.0
>
>
> See test_nulPattern1.
> This bug is a real pain in the neck.
> I want to capture NUL padding regions and insure they are all NUL.
> These come through to XML as These U+E000 characters. I need to insure that
> the string contains only those.
> So I'd like to use a
> {code:xml}
> <xs:simpleType name="allNULStringType>
> <xs:restriction base="xs:string">
> <xs:pattern value="*"/>
> </xs:restriction>
> </xs:simpleType>
> {code}
> I consider this data well-formed (should parse) even if other bytes are there
> that aren't NUL, but such data is invalid. So I want the facet to check for
> all NUL chars (or these E000 things that Daffodil puts in XML because XML
> can't contain actual NUL chars).
> The test fails with
> {code:java}
> org.apache.daffodil.tdml.TDMLExceptionImpl: (Implementation: daffodil)
> Validation errors found where none were expected by the test case.
> Validation Error: ex:foo failed facet checks due to: facet pattern(s): *
> {code}
> If github does the right thing that pattern will look like the E000 box char
> and *.
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