[OASIS Issue Tracker] (OBIX-139) 5.2 Non-schema-informed EXI

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

    [ https://tools.oasis-open.org/issues/browse/OBIX-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=37156#comment-37156 ] 

Markus Jung commented on OBIX-139:
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Should be discussed in next TC 04/24/2014. 

This section is kind of informative. EXI provides a schema-informed and non-schema informed mode. For the schema informed mode the encoder and decoder need to have the schema document and the encoding is most efficient. The non-schema informed mode does not put any specific requirement on the decoder but is less efficient. Should the OBIX EXI encoding allow both types or request a certain type?

> 5.2 Non-schema-informed EXI
> ---------------------------
>
>                 Key: OBIX-139
>                 URL: https://tools.oasis-open.org/issues/browse/OBIX-139
>             Project: OASIS Open Building Information Exchange (oBIX) TC
>          Issue Type: Bug
>          Components: ENCODINGS Specification
>    Affects Versions: ENCODINGS PR02
>         Environment: TAB Review
>            Reporter: Toby Considine
>
> "5.2 Non-schema-informed EXI presently reads: 
> ***** 
> EXI can be used without any schema information about the XML infoset that shall be encoded. This has the advantage that no schema information is required at the decoders' site, but comes with the disadvantage of being less efficient and providing only a limited compression for small payloads. 
> ***** 
> I am not certain what could have been meant by ""can be used"" followed by ""that shall be encoded."" Nor does ""no schema information is required at the decoder's site"" follow from either not including or including the encoded XML infoset. Even more confusing is the last clause, which implies not sending information is ""less efficient and providing only a limited compression for small payloads."""



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