Thanks Alberto I believe this is now working correctly and my understanding of how to validate with a schema is better understood. I really appreciated your assistance.
DeWayne Dantlzer -----Original Message----- From: Alberto Massari [mailto:amass...@datadirect.com] Sent: Friday, January 09, 2009 12:21 AM To: c-users@xerces.apache.org Subject: Re: Validation using a schema Dantzler, DeWayne C wrote: > Ok, I turned on namespace processing using setDoNamespace(true), but > the results are not what I expected (see below). I want to use an > external schema specified by the caller and not the schema called out > in the XML document. How do I do this with Xerces? And what exactly is > the cause of the below error? > > ====================================================================== > == > ================= > Error reported by the Parser > > <?xml-stylesheet type="text/xsl" href="BCME_Transform.xsl"?> <bcme > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > Line 4::Column 58 > xsi:noNamespaceSchemaLocation="787_BCMEdition_v1.1.xds"> > > Parser Error Message: The schemaLocation attribute does not contain > pairs of values. > You used _XmlDOMParser->setExternalSchemaLocation((const char* const)schema); that requires a string like "uri schema uri2 schema2" (i.e. "pairs of values") where 'schema' is the location of the schema for the namespace 'uri' and 'schema2' is the location of the schema for the namespace 'uri2'. In your case the schema is for the empty namespace, so you must use setExternalNoNamespaceSchemaLocation Alberto > ====================================================================== > == > ================== > > DeWayne Dantlzer > 206-544-3658 > > > -----Original Message----- > From: Alberto Massari [mailto:amass...@datadirect.com] > Sent: Thursday, January 08, 2009 11:30 PM > To: c-users@xerces.apache.org > Subject: Re: Validation using a schema > > You also need to turn on namespace processing using > setDoNamespaces(true) > > Alberto > > Dantzler, DeWayne C wrote: > >> Hello, >> >> I trying for the first time to validate an XML document with a >> schema, >> > > >> but I'm not sure of the results from the parser. I'm currently using >> Xerces C++ 2.8.0 DOM Parser. What is the correct syntax to specify a >> schema? If the schema and xml file are in the same directory can I >> just use the filename of the schema or do I have to specify a full >> > pathname? > >> If the schema is not in the same directory or location then what is >> the correct syntax? Here's what I've done. >> >> Code snippet: >> ========================================================== >> //perform the necessary DOM Parser init and setup ... omitting all >> the >> > > >> gory details >> >> //setup the Entity Resolver to redirect the parser to use the >> external >> > > >> Schema _XmlDOMParser->setEntityResolver(resolver); >> >> //Turn on the necessary features to allow validation by an external >> Schema _XmlDOMParser->setValidationScheme(_XmlDOMParser->Val_Always); >> >> //enable schema processing >> _XmlDOMParser->setDoSchema(true); >> >> //specify schema to use where scheme syntax is the filename i.e >> bcme.xsd _XmlDOMParser->setExternalSchemaLocation((const char* >> const)schema); _XmlDOMParser->loadGrammar(schema, >> Grammar::SchemaGrammarType, true); >> >> >> //ignore DTD's >> _XmlDOMParser->setSkipDTDValidation(false); >> >> //attempt to parse the xml >> _XmlDOMParser->parse(xmlDoc2Parse); >> ============================================================== >> >> Results: Lots of Parser Errors but several of the elments are defined >> in the schema. See schema and xml below >> >> The following error occurred during XML Schema or DTD validation >> >> XML Parser Error in file "bcme.xml" >> >> <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet >> type="text/xsl" href="BCME_Transform.xsl"?> >> Line 3::Column 6 <bcme >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >> >> Parser Error Message: Unknown element 'bcme' >> >> The following error occurred during XML Schema or DTD validation >> >> XML Parser Error in file "bcme.xml" >> >> <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet >> type="text/xsl" href="BCME_Transform.xsl"?> >> Line 3::Column 17 <bcme >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >> >> Parser Error Message: Attribute 'xmlns:xsi' is not declared for >> element 'bcme' >> >> The following error occurred during XML Schema or DTD validation >> >> <?xml-stylesheet type="text/xsl" href="BCME_Transform.xsl"?> <bcme >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >> Line 4::Column 32 >> xsi:noNamespaceSchemaLocation="BCMEdition_v1.1.xds"> >> >> Parser Error Message: Attribute 'xsi:noNamespaceSchemaLocation' is >> not >> > > >> declared for element 'bcme' >> >> The following error occurred during XML Schema or DTD validation >> >> <bcme xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >> xsi:noNamespaceSchemaLocation="BCMEdition_v1.1.xds"> >> Line 5::Column 11 <edition> >> >> Parser Error Message: Unknown element 'edition' >> >> The following error occurred during XML Schema or DTD validation >> >> xsi:noNamespaceSchemaLocation="BCMEdition_v1.1.xds"> >> <edition> >> Line 6::Column 15 >> <editionid>D633W101-AFA_20080604.0000000000</editionid> >> >> Parser Error Message: Unknown element 'editionid' >> ============================================================== >> >> XML Document Snippet: >> >> <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet >> type="text/xsl" href="BCME_Transform.xsl"?> <bcme >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >> xsi:noNamespaceSchemaLocation="BCMEdition_v1.1.xds"> >> <edition> >> <editionid>D633W101-AFA_20080604.0000000000</editionid> >> <editionType>Replace</editionType> >> <editionNumber>0000000000</editionNumber> >> </edition> >> >> ============================================================== >> Schema Snippet >> >> <?xml version="1.0" encoding="UTF-8"?> <xs:schema >> xmlns:xs="http://www.w3.org/2001/XMLSchema";> >> >> <xs:element name="bcme"> >> <xs:complexType> >> <xs:sequence> >> <xs:element ref="edition"/> >> <xs:element ref="publication"/> >> <xs:element ref="files"/> >> <xs:element ref="toc"/> >> </xs:sequence> >> </xs:complexType> >> </xs:element> >> <xs:element name="edition"> >> <xs:complexType> >> <xs:sequence> >> <xs:element ref="editionid"/> >> <xs:element ref="editionType"/> >> <xs:element ref="editionNumber"/> >> <xs:element ref="lastEdition" >> minOccurs="0"/> >> </xs:sequence> >> </xs:complexType> >> </xs:element> >> ============================================================== >> >> DeWayne Dantlzer >> >> >> > > >
