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parsing XML Schema, no validation required, Problems: Error resolving co

Subject: parsing XML Schema, no validation required, Problems: Error resolving component 's:schema'...
From: Nataliya
Date: Mon, 17 Mar 2008 19:23:32 +0100
Hello dear users and developers!

I have a great problem while parsing some XML-Schemas. My task is to extract the information from WSDL-Files and parse an included schema as well.

I read about "Using XML Schema", "Caching & Preparsing Grammars" and some of the threads in the mailing-list. I saw, that some people had similar problems, but I can't resolve mine.

So, I parse the wsdl-File with wsdl4j and extract the schema-Element from it.

Then I want to use the Methods of XSModel, which offer all the possibilities to extract the necessary information.

Because of the line "<s:element ref="s:schema" />" in the schema (in my example) I have a problem and the following error:

[Error] :-1:-1: src-resolve.4.2: Error resolving component 's:schema'. It was detected that 's:schema' is in namespace 'http://www.w3.org/2001/XMLSchema', but components from this namespace are not referenceable from schema document 'file:/C:/MyData/test.wsdl'. If this is the incorrect namespace, perhaps the prefix of 's:schema' needs to be changed. If this is the correct namespace, then an appropriate 'import' tag should be added to 'file:/C:/MyData/test.wsdl'.

I don't want to make some changes in the wsdl-File, because the validation is not important for me, my task is to analyse the existing files and not to improve them. The most confusing thing is that the parser extracts everything what I want from the schema element (i.e. it runs without to stop), but I see this validation error all the time.

I don't want to validate! I want to extract! What can I do in this case? Can I turn off the validation feature and get an XSModel anyway? Can I turn off the reporting of the validation errors?

Can some art of resolver help in this case? Can I say: if s:schema appears, the "http://www.w3.org/2001/XMLSchema"; schould be used? I don'd understand the feature setEntityResolver... Can anybody give some samples? Could I use some default resolvers or the resolvers in resolver.jar? How can I do this?

Please, help me!

Best regards,

Here is some Code for better undestanding:

   WSDLFactory factory = WSDLFactory.newInstance();
   WSDLReader reader = factory.newWSDLReader();
reader.setFeature("javax.wsdl.verbose", true);
   reader.setFeature("javax.wsdl.importDocuments", true);
String urlToWSDLFile = "C:/MyData/test.wsdl";
   Definition def = reader.readWSDL(urlToWSDLFile);
   Element rootSchemaElement = getSchemaElementFromDefinition(def);
   DOMInputSource domInput = new DOMInputSource(rootSchemaElement);
XMLGrammarPreparser xmlGrammarPreparser = new XMLGrammarPreparser(); xmlGrammarPreparser.registerPreparser(XMLGrammarDescription.XML_SCHEMA,null); XMLGrammarLoader schemaLoader = xmlGrammarPreparser.getLoader(XMLGrammarDescription.XML_SCHEMA); try { Grammar preparseGrammar = xmlGrammarPreparser.preparseGrammar(XMLGrammarDescription.XML_SCHEMA, domInput); XSGrammar xsGrammar = (XSGrammar) preparseGrammar; XSModel xsModel = xsGrammar.toXSModel(); getElementsFromSchema(xsModel);


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