Validating XML against multiple schema's within the same namespace

I was trying to validate XML against a XSD schema which in turn contains included schemas. I was getting this strange exception "src-resolve: Cannot resolve the name someName to a(n) 'type definition' component" where someName is the component that is declared in the included schema. I tried to load the schema using newSchema(Array) constructor but that did nor help either.
Schema schema = schemaFactory.newSchema(sources);
Where sources is an array of the StreamSource pointing to the main schema as well as the included schemas.
After googling I found this is actually a known bug in Xerces.
https://issues.apache.org/jira/browse/XERCESJ-1130
One way to bypass this problem is to write a custom ResourceResolver. However after lot of trial and error I found a way to simpler way to do this. The trick is to create a URL object and set systemID of the source to this URL.
//open the main schema

File file = new File("schema1.xsd");
 FileInputStream ss = new FileInputStream(file);
//Get the URL for this file

URL url = file.toURI().toURL();
// Create the StreamSource for the schema
StreamSource source = new StreamSource(url.openStream());
// Most Important: set the systemID to this URL. The included schema will be searched from this location
source.setSystemId(url.toString());
Now create the schema and validation should work fine

 SchemaFactory schemaFactory =
SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = schemaFactory.newSchema(source);