xs:anyType element in EXI with external schema

[Anonymous]

Hi,

I am trying to encode EXi stream with 2 schemas. The main schema has following definition to the second schema in its body:

<xs:complexType>
    <xs:complexContent>
        <xs:extension base="xs:anyType"/>
    </xs:complexContent>
</xs:complexType>

But the generateSchemaInformedGrammars function always returns UNEXPECTED_ERROR.
I have tried many ways, how to define reference to other external schema but no luck. How schould I define it? (Does the library even support this feature?)

Thanks and Regards
Filip

[Rumen Kyusakov]

Hi Filip,

I am not sure I understand the problem here. Have a look at the exipe example that uses 3 schemas when in schema mode. The schemas are connected with <import> statement.

Remember you need to pass the list with the paths to all three schemas to exipe:
-schema=examples/simpleEncoding/exipe-test-xsd.exi,examples/simpleEncoding/exipe-test-nested-xsd.exi,examples/simpleEncoding/exipe-test-types-xsd.exi examples/simpleEncoding/exipe-test.exi

// Rumen

[Anonymous]

Hi Rumen,

Thank you for reply. The thing is that the first schema does not know second schema. Definition of such case is done by \<xs:extension base="xs:anyType"/> according to specification. That is why I am trying to avoid \<import> clause. Following is the example what I am trying to achieve (ignore the \ at the beginning of lines, tags was not visible while in preview mode withouth it):

first schema:
\<xs:element name="element1">
\<xs:complexType>
\<xs:complexContent>
\<xs:extension base="xs:anyType"/>
\</xs:complexContent>
\</xs:complexType>
\</xs:element>

second schema:
\<xs:element name="number" type="xs:unsignedInt"/>
\<xs:element name="string" type="xs:string"/>

XML data:
\<element1>
\<number>10\</number>
\<string>text\</string>
\</element1>

Thanks,
Filip

[Rumen Kyusakov]

Hi Filip,

I think I understand now - you would like to use 2 schemas that are unrelated (not connected through <import>) but use them to encode one EXI stream.

I don't have an answer to that question and I am also interested to know if this is allowed by the EXI spec. It is not very clear from the definitions there so I raised the question within the EXI working group.

When I get to know more I'll let you know.

Best,
Rumen

[Anonymous]

Hi Rumen,

I found this definition at http://tools.ietf.org/html/rfc4741 (search for "anyType"). Meanwhile I also found a way how to encode it successfully, I used this:

\<xs:element name="test" type="xs:anyType"/>

however I don't know if it is the same as above.

Filip