The following works for me:
public class SAXParserTest extends DefaultHandler {
SAXParserFactory spf = SAXParserFactory.newInstance();
spf.setValidating(true);
spf.setNamespaceAware(true);
SAXParser parser = spf.newSAXParser();
parser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage";,
"http://www.w3.org/2001/XMLSchema";);
parser.setProperty("http://apache.org/xml/properties/schema/external-
noNamespaceSchemaLocation", xsdFile); // xsdFile could be for
eg, "test.xsd"
parser.parse(new File(xmlFile), this); // xmlFile could be for
eg, "test.xml"
On Thu, Mar 18, 2010 at 1:38 PM, stefcl <stefatw...@gmail.com> wrote:
>
> Hello,
>
> I'd like to use a validating SAX parser to read huge XML documents (>200mo).
> Due to some legacy reasons, some of these files might not declare anything
> related to schema or namespaces.
>
> They look like this :
>
> <items>
> <product id="1">...
> <product id="2">..
> </items>
>
> While the correct form would be :
>
> <pre:itemsxmlns:pre="http://xml.prediggo.com/schema/ItemsSchema";>
> <product id="1">...
> <product id="2">..
> </pre:items>
>
>
> Is there anything I can do to "cheat" the schema declaration on the document
> root element so that I can benefit from schema validation anyway? Writing
> all the validation stuff myself would be many days of work.
>
> I tried the following :
>
> QName qName = new QName("http://xml.prediggo.com/schema/ItemsSchema";, "root"
> );
>
>
> xmlReader.setFeature("http://apache.org/xml/features/validation/schema"; ,
> true);
>
> xmlReader.setProperty("http://apache.org/xml/properties/validation/schema/root-type-definition";,
> qName );
>
>
> But it didn't help, I don't know if it's possible to solve the issue using
> configuration and how I should do that. I consider adding the ns declaration
> in the xml file using java code but it would require a complete rewrite of
> the file which is rather big.
>
> When we were still using jaxb I could *cheat* the validator by using a Sax
> filter like this one.
>
> @Override
> public void startElement(String uri, String localName, String qName,
> Attributes attributes) throws SAXException
> {
>
> if( localName.equals( "items" ))
> {
> //inject namespace uri...
> super.startElement(
> "http://xml.prediggo.com/schema/ItemsSchema"; , localName, qName,
> attributes);
> }
> else
> {
> //do things normally...
> super.startElement( uri , localName, qName, attributes);
> }
>
> }
>
> But now, validation exceptions are thrown before my filter is even called.
>
> Any advice would be greatly appreciated....
--
Regards,
Mukul Gandhi
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