Developers,
We've run into an issue with llrp-1x0-def.xsd and the use of LLRP vendor
extensions. If you build a vendor extension that contains a core LLRP
parameter, the message won't validate (against this schema) because the core
LLRP parameters are not a top level element of the schema). For example, we
use the LLRPStatusParameter within some of our custom messages as there was no
reason to re-invent a new error reporting scheme. Because LLRPStatus is not in
the top level of the llrp-1x0.xsd schema, these custom messages won't validate
even though they are compliant.
The fix would be to add all the LLRP core parameters to the root elements in
the schema. E.g. where we have
<!-- Message top-level elements -->
<xs:element name="KEEPALIVE" type="llrp:KEEPALIVE"/>
<xs:element name="CLOSE_CONNECTION" type="llrp:CLOSE_CONNECTION"/>
<xs:element name="GET_READER_CONFIG" type="llrp:GET_READER_CONFIG"/>
<xs:element name="DISABLE_ACCESSSPEC" type="llrp:DISABLE_ACCESSSPEC"/>
<xs:element name="SET_READER_CONFIG" type="llrp:SET_READER_CONFIG"/>
<xs:element name="ERROR_MESSAGE" type="llrp:ERROR_MESSAGE"/>
. . .
<xs:element name="LLRPStatus" type="llrp:LLRPStatus"/>
. . .
Since this change is in schema notation only, I recommend that we update the
current 1.0 version but use the same version numbers (i.e. we would not change
this
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema";
targetNamespace="http://www.llrp.org/ltk/schema/core/encoding/xml/1.0";
xmlns="http://www.llrp.org/ltk/schema/core/encoding/xml/1.0";
xmlns:llrp="http://www.llrp.org/ltk/schema/core/encoding/xml/1.0";
elementFormDefault="qualified"
>
Comments? Does anyone forsee any compatibility issues with this change?
Regards
Paul
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