Error when using Schema and Entity in Document

[Maik Weber]

Hello,

i have define an entity in the document which is using an schema for
validation. When i want to run the sax.SAXCount-example with validation
on (-v Option), i get following error-messages:

java.lang.ClassCastException:
org.apache.xerces.validators.dtd.DTDGrammar
 at
org.apache.xerces.validators.common.XMLValidator.resolveSchemaGrammar(XMLValidator.java:2680)

 at
org.apache.xerces.validators.common.XMLValidator.parseSchemas(XMLValidator.java:2648)

 at
org.apache.xerces.validators.common.XMLValidator.bindNamespacesToElementAndAttributes(XMLValidator.java:2589)

 at
org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:1142)

 at
org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumentScanner.java:1862)

 at
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1005)

 at
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)

 at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1081)
 at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1122)
 at sax.SAXCount.print(SAXCount.java:158)
 at sax.SAXCount.main(SAXCount.java:392)

Is it a bug? I am using Xerces 1.4.1 and JDK 1.3.

Here is the small xml-file:
<?xml version="1.0"?>
<!DOCTYPE root [
  <!ENTITY test "this is a test">
]>

<root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
                 xsi:noNamespaceSchemaLocation='test.xsd'>
  <a>Beispiel: &test;</a>
</root>

And this is the Schema-File:
<?xml version="1.0" encoding="UTF-8"?>

<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'>

  <xs:element name="root">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="a" maxOccurs="unbounded" />
      </xs:sequence>
    </xs:complexType>
  </xs:element>

  <xs:element name="a" type="xs:string" />

</xs:schema>

In the "XMLSchema Part0: Primer Part C: Using Entities" is descriped how
to use entities with XMLSchema.

Have somebody an idea?

Maik Weber
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