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Subject: [OASIS Issue Tracker] Commented: (ODATA-395) Simplify rule for implicit values of enumeration members
[ http://tools.oasis-open.org/issues/browse/ODATA-395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33474#action_33474 ] Stefan Drees commented on ODATA-395: ------------------------------------ The number Zero should be a good default first value. In a context where the number One is natural, one can left-pad the range with say UNUSED or NULL (...) and enter the "real domain" starting at second entry or explicitly set all values. If starting with a default of One, a Zero frantic community would be forced to explicitly set each value. It is not so simple to map Hubert's extension idea of first-may-have-special-hint into xml schema, right? So if this is complicated to XSDalize, I am all for "All or nothing" ;-) > Simplify rule for implicit values of enumeration members > -------------------------------------------------------- > > Key: ODATA-395 > URL: http://tools.oasis-open.org/issues/browse/ODATA-395 > Project: OASIS Open Data Protocol (OData) TC > Issue Type: Improvement > Components: OData CSDL > Affects Versions: V4.0_CSD01 > Environment: [Proposed] > Reporter: Ralf Handl > Fix For: V4.0_CSD02 > > > Enumeration members have an optional Value attribute for specifying an integer equivalent to the symbolic member name that is for ordering. > The current rule for implicitly numbering the enumeration members is cloned from the C family of programming languages and allows specifying values for some members while having the other members being numbered implicitly. This can lead to surprising results for the uninitiated: > <EnumType Name="ShippingMethod"> > <Member Name="VIP"/> > <Member Name="FirstClass"/> > <Member Name="TwoDay" Value="0"/> > <Member Name="Overnight"/> > </EnumType> > The result is that both VIP and TwoDay get the value zero and both FirstClass and Overnight get the value 1. > While we see value in having Value optional, we see no value in providing a value for some members only. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
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