How to map XML to database object ?

Question

Hello,
We are trying to convert XML file into XMLType object and then to our custom object type using registered XSD definition. So we doing this : clob with xml -> XMLObject -> our MMS_T object.
The problem we experienced with transfering values of "type" and "status" attributes to object values MMS_T.TYPE and MMS_T.STATUS. Note that types MMS_T and ERROR_T are automatically created during schema
(XSD) registration. See and try Listing 1.
The second Listing contains anonymous pl/sql block with our testcase, please run it after registering schema. The output You will get should look like this one :
Schema based
Well-formed
<?xml version="1.0" encoding="UTF-8"?>
<mms-provisioning xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xdb="http://xmlns.oracle.com/xdb" type="subscription"
status="error">
<error code="1">Some error</error>
<serviceID>iDnes</ser
Type:,Status:,Error:1-Some error,ServiceID:iDnes,Method:SMS,MSISDN:[phone]
The problem is visible on the last line, where "Type" and "Status" object attributes should have its values that should come from XML, but they haven't. Where we were wrong ?
Please help,
Thanks & Regards,
Radim.
Note
====
When we are trying to do xml.schemaValidate() in our example, it raises folowong errors :
ORA-31154: invalid XML document
ORA-19202: Error occurred in XML processing
LSX-00310: local element or attribute should be namespace qualified
ORA-06512: at "SYS.XMLTYPE", line 0
ORA-06512: at line 27
Listing 1
=========
declare
xsd clob:=
'<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="http://xmlns.oracle.com/xdb" elementFormDefault="qualified"
attributeFormDefault="unqualified"
xdb:mapStringToNCHAR="false"
xdb:mapUnboundedStringToLob="false"
xdb:storeVarrayAsTable="false"
>
<xs:element name="mms-provisioning" xdb:SQLType="MMS_T">
<xs:complexType>
<xs:sequence>
<xs:element name="error" minOccurs="0" xdb:SQLName="ERROR" xdb:SQLType="ERROR_T">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="code" type="xs:decimal" use="required" xdb:SQLName="CODE" xdb:SQLType="NUMBER"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
<xs:element name="serviceID" type="xs:string" xdb:SQLName="SERVICEID" xdb:SQLType="VARCHAR2"/>
<xs:element name="method" type="xs:string" xdb:SQLName="METHOD" xdb:SQLType="VARCHAR2"/>
<xs:element name="msisdn" type="xs:string" xdb:SQLName="MSISDN" xdb:SQLType="VARCHAR2"/>
</xs:sequence>
<xs:attribute name="type" type="type_t" use="required" xdb:SQLName="TYP" xdb:SQLType="VARCHAR2"/>
<xs:attribute name="status" type="status_t" use="required" xdb:SQLName="STATUS" xdb:SQLType="VARCHAR2"/>
</xs:complexType>
</xs:element>
<xs:simpleType name="status_t">
<xs:restriction base="xs:string">
<xs:maxLength value="30"/>
<xs:enumeration value="new"/>
<xs:enumeration value="pending"/>
<xs:enumeration value="subscribed"/>
<xs:enumeration value="error"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="type_t">
<xs:restriction base="xs:string">
<xs:maxLength value="30"/>
<xs:enumeration value="subscription"/>
<xs:enumeration value="unsubscription"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>';
begin
dbms_XMLSchema.RegisterSchema (
SchemaURL => 'http://www.eurotel.cz/xsd/mms-provisioning.xsd', SchemaDoc => xsd
end;
Listing 2
=========
declare
o mms_t;
doc clob :=
'<?xml version="1.0" encoding="UTF-8"?>
<mms-provisioning type="subscription" status="error">
<error code="1">Some error</error>
<serviceID>iDnes</serviceID>
<method>SMS</method>
<msisdn>[phone]</msisdn>
</mms-provisioning>';
xml XMLType;
begin
xml := XMLType.createXML(XMLData => doc,schema => 'http://www.eurotel.cz/xsd/mms-provisioning.xsd'); --
if xml.isSchemaBased() = 1 then
dbms_output.put_line('Schema based');
else
dbms_output.put_line('Non-Schema based');
end if;
if xml.isFragment() = 1 then
dbms_output.put_line('Fragment');
else
dbms_output.put_line('Well-formed');
end if;
--Crashes with errors
--xml.schemaValidate();
dbms_output.put_line(substr(xml.getstringval(),1,255));
xml.toObject(o,schema => 'http://www.eurotel.cz/xsd/mms-provisioning.xsd', element => 'mms-provisioning');
dbms_output.put_line(
'Type:'||o.typ||
',Status:'||o.status||
',Error:'||o.error.code||'-'||o.error.sys_xdbbody$||
',ServiceID:'||o.serviceid||
',Method:'||o.method||
',MSISDN:'||o.msisdn);
end;
/

Answer 1

thanks for the reply
my source XML response will be looking something like this (it will be reponsed in a long string):
<?xml version='1.0' encoding='UTF-8'?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV='http://schemas.xmlsoap.org/soap/envelope/' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<SOAP-ENV:Header>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<status>
<retCode>00</retCode>
<retCodeDesc>OK</retCodeDesc>
<rRobjectId>09002347802d2981</rRobjectId>
<rFileSize>7</rFileSize>
<rTotalPages>1</rTotalPages>
</status>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
my RFC is:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="urn:sap-com:document:sap:rfc:functions" targetNamespace="urn:sap-com:document:sap:rfc:functions">
<xsd:element name="ZRFC_SET_DOCUMENT.Response">
<xsd:complexType>
<xsd:all>
<xsd:element name="RETCODE" type="xsd:string" minOccurs="0" />
<xsd:element name="RETCODEDESC" type="xsd:string" minOccurs="0" />
<xsd:element name="RFILESIZE" type="xsd:string" minOccurs="0" />
<xsd:element name="RROJECTID" type="xsd:string" minOccurs="0" />
<xsd:element name="RTOTALPAGES" type="xsd:string" minOccurs="0" />
</xsd:all>
</xsd:complexType>
</xsd:element>
</xsd:schema>