XML instance validation against XML schema

Question

How can I get a reference on the error node object after
validation against an XML schema ?
Ex. :
DOMParser domP = new DOMParser();
domP.setXMLSchema(schemaDoc); // schemaDoc = ref. on an XMLSchema
domP.setValidationMode(XMLParser.SCHEMA_VALIDATION);
domP.parse(reader); // reader contains the XML instance data
If an error occurred, I only get a message string. What I need is to get a reference on the node object which contains the error in order to retrieve its properties to the schema.
I could then alert the user with a message such as :
"Data xxx is not valid ; it must be comprised between yy and zz...".
Did somebody solve this problem ? May I use the XMLError class to do this ?
Thank you

Answer 1

Hi Ray,
Were you able to resolve this issue? I am encountering a very similar problem where I am not connected to the internet and it fails during the newSchema method on javax.xml.validation.SchemaFactory. I have attempted to implement the suggestions of ExtremeGardener and vidyut with no luck.
Per ExtremeGardener's suggestion of replacing xmlns:xs="http://www.w3.org/2001/XMLSchema" with xmlns:xs="XMLSchema.xsd" and storing it locally, it gave me an error for trying to set the "xs" or "xsd" prefixes to anything other than "http://www.w3.org/2001/XMLSchema." I forget the exact error. I also tried to use my own prefix and it did not like that either.
Per vidyut's suggestion of using a catalog resolver, I believe that I have tried that too (if I understand correctly). I created an LSResourceResolver and tied it to the SchemaFactory. I can invoke it for a namespace but that did not resolve the issue because it only invokes the resolver on an import, include, or redefine. I believe that it is trying to reach the internet due to the xmlns:xs="http://www.w3.org/2001/XMLSchema" attribute within the top-level schema element in the XSD and I know of no way to invoke it for that.
I also created an ErrorHandler and tied it to the SchemaFactory. That shows me the errors and they are all related to the standard XML data types defined in XMLSchema.xsd. The errors that I am seeing are all of this form: "UndeclaredPrefix: Cannot resolve 'xs:string' as a QName: the prefix 'xs' is not declared."
I am currently using the SchemaFactory in Java 1.5, but I am thinking about trying the Xerces SchemaFactory since they are not exactly the same implementation.
Does anyone have any other suggestions? Any help you can provide would be greatly appreciated!
Thanks,
betzro1