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https://issues.apache.org/jira/browse/XERCESC-1755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12539105
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Fernando commented on XERCESC-1755:
-----------------------------------
This issue was raised from comments from my team, and I did not check this bug
myself until now.
When analyzing the issue, I have realized there is no such a problem, and there
was a misunderstanding with the schemas.
My apologies. Thanks for your attention anyway. This issue can be closed.
> Abstract types in substitution group
> ------------------------------------
>
> Key: XERCESC-1755
> URL: https://issues.apache.org/jira/browse/XERCESC-1755
> Project: Xerces-C++
> Issue Type: Bug
> Components: Validating Parser (Schema) (Xerces 1.5 or up only)
> Affects Versions: 2.7.0
> Environment: Unix - Linux (SUSE)
> Reporter: Fernando
>
> I wish to report a bug that, to my understanding, creates a problem of
> compatibility with XML 1.0.
> Let it be a substitution group, which basic type is an abstract type A. Let
> it be a member B of that substitution group, which happen to be an abstract
> type too. Obviously, the second abstract type B is no a final type; this
> second abstract type B must be substituted by other final valid types.
> The reason for including the second abstract B as part of the substituion
> group for abstract type A is to somehow structure and hierarchise the whole
> substitution group.
> The bug I wish to report is that the second abstract type B produces a
> problem, since it is not allowed to be part of any substitution group.
> According to XML 1.0 recommendation (that Xerces is supposed to be
> complaiance with), an abstract type present in a substitution group should
> not be a problem, since there is no restriction for this.
> Could someone please check if this problem with Xerces is actually a bug to
> be solved in next version? Otherwise, could someone please let me know in
> which part of the XML 1.0 recommendation there is any constrain to abstract
> types as part of substitution groups?
> Thanks a lot.
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