[XERCESJ-1163] javax.xml.validation.Validator#validate implementation does not support a DOMSource argument

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 2.8.0
• Component/s: JAXP (javax.xml.validation)
• Assignee: Unassigned
• Reporter: Steven Grossman
• Created: 15/May/06 20:57
• Updated: 23/May/06 23:06
• Resolved: 23/May/06 12:26

Description

Validator#validate implementation does not support a DOMSource argument. The following SAXParseException is always thrown:

Exception in thread "main" org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'xxx'.

The problem is not seen in the 1.5 jdk.

I've supplied a test class that succesfully validates an xml instance document using a StreamSource and subsequently fails to perform the validation against a DOMSource representation of the same xml.

import java.io.StringReader;
import java.io.IOException;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.dom.DOMSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.xml.sax.SAXException;
import org.xml.sax.InputSource;
import org.w3c.dom.Document;

public final class ValidatorBug {

private static final String SCHEMA =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
"<xs:schema xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" elementFormDefault=\"qualified\" attributeFormDefault=\"unqualified\">\n" +
" <xs:element name=\"root\"/>\n" +
"</xs:schema>";

private static final String XML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><root/>";

public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException

{ SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); Schema schema = schemaFactory.newSchema(new StreamSource(new StringReader(SCHEMA))); Validator validator = schema.newValidator(); System.out.println("\nvalidating stream source"); validator.validate(new StreamSource(new StringReader(XML))); // <--- WORKS System.out.println("valid"); DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder(); Document document = documentBuilder.parse(new InputSource(new StringReader(XML))); System.out.println("\nvalidating DOM source"); validator.validate(new DOMSource(document)); // <--- PROBLEM System.out.println("valid"); }

}

The exception:

Exception in thread "main" org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'root'.
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
at org.apache.xerces.jaxp.validation.DOMValidatorHelper.beginNode(Unknown Source)
at org.apache.xerces.jaxp.validation.DOMValidatorHelper.validate(Unknown Source)
at org.apache.xerces.jaxp.validation.DOMValidatorHelper.validate(Unknown Source)
at org.apache.xerces.jaxp.validation.ValidatorImpl.validate(Unknown Source)
at javax.xml.validation.Validator.validate(Validator.java:82)
at ValidatorBug.main(ValidatorBug.java:42)

(This bug is represented by XERCESJ-1132 and XERCESJ-1161, but they were in the wrong component)