[jira] [Assigned] (DAFFODIL-2205) emptyValueDelimiterPolicy only works per specification for 'both'

["Mike McGann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DAFFODIL-2205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike McGann reassigned DAFFODIL-2205:
-------------------------------------

    Assignee:     (was: Mike McGann)

> emptyValueDelimiterPolicy only works per specification for 'both' 
> ------------------------------------------------------------------
>
>                 Key: DAFFODIL-2205
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2205
>             Project: Daffodil
>          Issue Type: Bug
>    Affects Versions: 2.4.0
>         Environment: Daffodil 2.4 on Windows 10
>            Reporter: Shashi Ramaka
>            Priority: Major
>         Attachments: bug01-input-fails.txt, bug01-input-works.txt, bug01.dfdl.xsd
>
>
> This bug report is based on a message Roger Costello posted to the Daffodil Users group.
> From the DFDL specification, when emptyValueDelimiterPolicy is set to 'none':
> {quote}'none' indicates that if the content region is empty neither the
> dfdl:initiator or dfdl:terminator must be present. On unparsing when
> the content region is empty nothing will be output.
> {quote}
>  Based on the above, if in the schema an element has an initiator and a terminator, and if the emptyValueDelimiterPolicy is set to 'none', to represent an empty value neither the initiator nor the terminator should be present in the input.
>  In the attached test case,
>  * the element *MiddleName* has an initiator and a terminator
>  * *emptyValueDelimiterPolicy* is set to 'none'
>  * For the test input, John,,Doe we are getting the parse error: [error] Parse Error: Found out of scope delimiter: ',' ','
>  * Test input John,(),Doe parses successfully
> {code:xml}
>   <xs:element name="input">
>     <xs:complexType>
>       <xs:sequence
>           dfdl:separator=","
>           dfdl:separatorPosition="infix"
>           dfdl:separatorSuppressionPolicy="trailingEmpty">
>         <xs:element
>             name="FirstName"
>             type="xs:string" />
>         <xs:element
>             name="MiddleName"
>             type="xs:string"
>             dfdl:initiator="("
>             dfdl:terminator=")"
>             dfdlx:emptyElementParsePolicy="treatAsEmpty"
>             dfdl:emptyValueDelimiterPolicy="initiator" />
>         <xs:element
>             name="LastName"
>             type="xs:string" />
>       </xs:sequence>
>     </xs:complexType>
>   </xs:element>
> {code}
>  
>  Input:
> John,(),Doe – parse successful
> John,,Doe – Parse error.
> [error] Parse Error: Found out of scope delimiter: ',' ','
>  
>  The files used for testing this scenario are attached.
> It also appears that it does not work for 'initiator' and 'terminator' as well so this ticket will be about implementing this feature instead of fixing a bug. 
>  



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