ORA-30937 when validating element referenced from included schema

Question

I've boiled my latest problem down to a simple test case. Basically it seems as though the included schema is the problem, but I can't figure out why:
begin
dbms_xmlschema.deleteSchema('http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/testinclude.xsd', dbms_xmlschema.DELETE_CASCADE_FORCE);
dbms_xmlschema.registerSchema('http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/testinclude.xsd',
'<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified" versionfiltered="1-00" id="NDNASimpleTypes">
<xsd:complexType name="MessageHeaderType">
<xsd:sequence>
<xsd:element name="MESSAGE_NUMBER" type="xsd:long"/>
<xsd:element name="MESSAGE_TYPE" type="MessageTypeType"/>
<xsd:element name="MESSAGE_DATE" type="xsd:dateTime"/>
</xsd:sequence>
</xsd:complexType>
<xsd:simpleType name="MessageTypeType">
<xsd:annotation>
<xsd:documentation>The definition of the Sample Message Types</xsd:documentation>
</xsd:annotation>
<xsd:restriction base="xsd:string">
<xsd:maxLength value="2"/>
<xsd:enumeration value="CT"/>
<xsd:enumeration value="CA"/>
<xsd:enumeration value="CD"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>',TRUE,FALSE,FALSE,FALSE);
dbms_xmlschema.deleteSchema('http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/Test.xsd', dbms_xmlschema.DELETE_CASCADE);
dbms_xmlschema.registerSchema('http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/Test.xsd',
'<xsd:schema xmlns="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA" xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA" elementFormDefault="qualified" attributeFormDefault="unqualified" versionfiltered="1.0" id="Test">
<xsd:include schemaLocation="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/testinclude.xsd"/>
<xsd:element name="SAMPLE_MESSAGE">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MESSAGE_HEADER" type="MessageHeaderType"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>',TRUE,TRUE,FALSE,FALSE);
END;
update xml_in
set xml_data = xmltype ( '<?xml versionfiltered="1.0" encoding="UTF-8"?>
<!--Sample XML file generated by XMLSpy v2005 rel. 3 U (http://www.altova.com)-->
<SAMPLE_MESSAGE xmlns="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/Test.xsd">
<MESSAGE_HEADER>
<MESSAGE_NUMBER>2147483647</MESSAGE_NUMBER>
<MESSAGE_TYPE>CT</MESSAGE_TYPE>
<MESSAGE_DATE>2001-12-17T09:30:47</MESSAGE_DATE>
</MESSAGE_HEADER>
</SAMPLE_MESSAGE>
where msg_id = 8
and I get the error:
ORA-30937: No schema definition for 'MESSAGE_NUMBER' (namespace 'http://www.forensic.gov.uk/eMessages/Pnclink/NDNA') in parent 'MESSAGE_HEADER'
ORA-06512: at "SYS.XMLTYPE", line 0
ORA-06512: at line 27
But if I remove the MESSAGE_NUMBER I get
ORA-31154: invalid XML document
ORA-19202: Error occurred in XML processing
LSX-00213: only 0 occurrences of particle "MESSAGE_NUMBER", minimum is 1
ORA-06512: at "SYS.XMLTYPE", line 0
ORA-06512: at line 37
So it knows there is supposed to be a particle called message_number if it's not there, but not what to do with it if it is.
One other thing, which I think is significant: If I amend my test.xsd schema so I define MESSAGE_HEADER there, so the only thing being referenced from testinclude.xsd is the SIMPLE type "MessageTypeType", I don't have a problem. It seems to be only when I include COMPLEX types.
Any suggestions?

Answer 1

Dave
I can't register the XML Schemas with XML DB, since we do think versionfiltered is a valid attribute for a schema element...
SQL> declare
  2    res boolean;
  3    xmlSchema xmlType := xmlType(
  4  '<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified" versionfilt
ered="1-00" id="NDNASimpleTypes">
  5
  6          <xsd:complexType name="MessageHeaderType">
  7                  <xsd:sequence>
  8                          <xsd:element name="MESSAGE_NUMBER" type="xsd:long"/>
  9                          <xsd:element name="MESSAGE_TYPE" type="MessageTypeType"/>
10                          <xsd:element name="MESSAGE_DATE" type="xsd:dateTime"/>
11                  </xsd:sequence>
12          </xsd:complexType>
13          <xsd:simpleType name="MessageTypeType">
14                  <xsd:annotation>
15                          <xsd:documentation>The definition of the Sample Message Types</xsd:documentation>
16                  </xsd:annotation>
17                  <xsd:restriction base="xsd:string">
18                          <xsd:maxLength value="2"/>
19                          <xsd:enumeration value="CT"/>
20                          <xsd:enumeration value="CA"/>
21                          <xsd:enumeration value="CD"/>
22                  </xsd:restriction>
23          </xsd:simpleType>
24  </xsd:schema>');
25  begin
26    if (dbms_xdb.existsResource(:schemaPath)) then
27      dbms_xdb.deleteResource(:schemaPath);
28    end if;
29    res := dbms_xdb.createResource(:schemaPath,xmlSchema);
30  end;
31  /
Queuing DELETE Event
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.04
SQL> begin
  2    dbms_xmlschema.registerSchema
  3    (
  4      :schemaURL,
  5      xdbURIType(:schemaPath).getClob(),
  6      TRUE,TRUE,FALSE,TRUE
  7    );
  8  end;
  9  /
begin
ERROR at line 1:
ORA-30937: No schema definition for 'versionfiltered' (namespace '##local') in parent '/schema'
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 20
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 31
ORA-06512: at line 2XMLSPY agrees with us on this...
If I change version filtered to version I get
SQL> var schemaURL varchar2(256)
SQL> var schemaPath varchar2(256)
SQL> --
SQL> begin
  2    :schemaURL := 'http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/testinclude.xsd';
  3    :schemaPath := '/public/testinclude.xsd';
  4  end;
  5  /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.00
SQL> call dbms_xmlSchema.deleteSchema(:schemaURL,4)
  2  /
Queuing DELETE Event
Call completed.
Elapsed: 00:00:00.07
SQL> declare
  2    res boolean;
  3    xmlSchema xmlType := xmlType(
  4  '<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1-
00" id="NDNASimpleTypes">
  5
  6          <xsd:complexType name="MessageHeaderType">
  7                  <xsd:sequence>
  8                          <xsd:element name="MESSAGE_NUMBER" type="xsd:long"/>
  9                          <xsd:element name="MESSAGE_TYPE" type="MessageTypeType"/>
10                          <xsd:element name="MESSAGE_DATE" type="xsd:dateTime"/>
11                  </xsd:sequence>
12          </xsd:complexType>
13          <xsd:simpleType name="MessageTypeType">
14                  <xsd:annotation>
15                          <xsd:documentation>The definition of the Sample Message Types</xsd:documentation>
16                  </xsd:annotation>
17                  <xsd:restriction base="xsd:string">
18                          <xsd:maxLength value="2"/>
19                          <xsd:enumeration value="CT"/>
20                          <xsd:enumeration value="CA"/>
21                          <xsd:enumeration value="CD"/>
22                  </xsd:restriction>
23          </xsd:simpleType>
24  </xsd:schema>');
25  begin
26    if (dbms_xdb.existsResource(:schemaPath)) then
27      dbms_xdb.deleteResource(:schemaPath);
28    end if;
29    res := dbms_xdb.createResource(:schemaPath,xmlSchema);
30  end;
31  /
Queuing DELETE Event
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.04
SQL> begin
  2    dbms_xmlschema.registerSchema
  3    (
  4      :schemaURL,
  5      xdbURIType(:schemaPath).getClob(),
  6      TRUE,TRUE,FALSE,TRUE
  7    );
  8  end;
  9  /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.20
SQL> begin
  2    :schemaURL := 'http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/Test.xsd';
  3    :schemaPath := '/public/Test.xsd';
  4  end;
  5  /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.01
SQL> call dbms_xmlSchema.deleteSchema(:schemaURL,4)
  2  /
Queuing DELETE Event
Call completed.
Elapsed: 00:00:00.06
SQL> declare
  2    res boolean;
  3    xmlSchema xmlType := xmlType(
  4  '<xsd:schema xmlns="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA" xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="ht
tp://www.forensic.gov.uk/eMessages/Pnclink/NDNA" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0" id="Test">
  5
  6          <xsd:include schemaLocation="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/testinclude.xsd"/>
  7        <xsd:element name="SAMPLE_MESSAGE">
  8                  <xsd:complexType>
  9                          <xsd:sequence>
10                                  <xsd:element name="MESSAGE_HEADER" type="MessageHeaderType"/>
11                          </xsd:sequence>
12                  </xsd:complexType>
13          </xsd:element>
14    </xsd:schema>');
15  begin
16    if (dbms_xdb.existsResource(:schemaPath)) then
17      dbms_xdb.deleteResource(:schemaPath);
18    end if;
19    res := dbms_xdb.createResource(:schemaPath,xmlSchema);
20  end;
21  /
Queuing DELETE Event
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.04
SQL> begin
  2    dbms_xmlschema.registerSchema
  3    (
  4      :schemaURL,
  5      xdbURIType(:schemaPath).getClob(),
  6      TRUE,TRUE,FALSE,FALSE
  7    );
  8  end;
  9  /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.14
SQL> var xmltext varchar2(4000)
SQL> --
SQL> begin
  2    :xmltext :=
  3  '<SAMPLE_MESSAGE xmlns="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:sc
hemaLocation="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/Test.xsd">
  4     <MESSAGE_HEADER>
  5        <MESSAGE_NUMBER>2147483647</MESSAGE_NUMBER>
  6        <MESSAGE_TYPE>CT</MESSAGE_TYPE>
  7        <MESSAGE_DATE>2001-12-17T09:30:47</MESSAGE_DATE>
  8     </MESSAGE_HEADER>
  9  </SAMPLE_MESSAGE>';
10  end;
11  /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.01
SQL> drop table xml_in
  2  /
Table dropped.
Elapsed: 00:00:00.04
SQL> create table xml_in
  2  (
  3    msg_id   number(4),
  4    xml_data xmltype
  5  )
  6  /
Table created.
Elapsed: 00:00:00.03
SQL> insert into xml_in values ( 8, xmltype ('<FOO/>'))
  2  /
1 row created.
Elapsed: 00:00:00.01
SQL> declare
  2    xmldata xmltype;
  3  begin
  4    xmldata := xmltype(:xmltext);
  5    xmldata.schemaValidate();
  6  end;
  7  /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.09
SQL> update xml_in
  2     set xml_data = xmltype ( :xmltext )
  3   where msg_id = 8
  4  /
1 row updated.
Elapsed: 00:00:00.01
SQL> select * from xml_in
  2  /
    MSG_ID
XML_DATA
         8
<SAMPLE_MESSAGE xmlns="http://www.forensic.gov.uk/eMessages/Pnclink/NDNA" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLo
cation="ht
tp://www.forensic.gov.uk/eMessages/Pnclink/NDNA http://www.forensic.gov.uk/eMessages/Pnclink/NDNA/Test.xsd">
  <MESSAGE_HEADER>
    <MESSAGE_NUMBER>2147483647</MESSAGE_NUMBER>
    <MESSAGE_TYPE>CT</MESSAGE_TYPE>
    <MESSAGE_DATE>2001-12-17T09:30:47</MESSAGE_DATE>
  </MESSAGE_HEADER>
</SAMPLE_MESSAGE>
Elapsed: 00:00:00.06
SQL>