[XERCESJ-1175] The Xerces implemented SchemaFactory is not used by default when using Xerces 2.8.0 with Java 5.0

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Invalid
• Affects Version/s: 2.8.0
• Component/s: JAXP (javax.xml.validation)
• Environment: Java 5.0; Xerces 2.8.0; Eclipse 3.2
• Assignee: Unassigned
• Reporter: Søren Gjesse
• Created: 02/Aug/06 14:45
• Updated: 02/Aug/06 17:33
• Resolved: 02/Aug/06 17:33

Description

When version 2.8.0 of xercesImpl.jar is added to the Java 5.0 classpath the Xerces implementation of SchemaFactory is not used by default.

The reason for this is that the content of the file META-INF/services/javax.xml.validation.SchemaFactory in xercesImpl.jar is

org.apache.xerces.jaxp.validation.XMLSchemaFactory

It should be

http\://www.w3.org/2001/XMLSchema=org.apache.xerces.jaxp.validation.XMLSchemaFactory

(note the escape character of the : after http) as Java 5.0 expects a SchemaFactory for each schema language in this case http\://www.w3.org/2001/XMLSchema

When running the following with Java 5.0 and version 2.8.0 of xercesImpl.jar on the classpath

import javax.xml.XMLConstants;
...

SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
System.out.println(factory.getClass().getName());

the output is

com.sun.org.apache.xerces.internal.jaxp.validation.xs.SchemaFactoryImpl

Which is the Java 5.0 (Xerces 2.6.2 derivate) build-in SchemaFactory and not the Xerces 2.8.0 SchemaFactory.

There are several workarrounds one is to run java with the option

-Djavax.xml.validation.SchemaFactory:http://www.w3.org/2001/XMLSchema=org.apache.xerces.jaxp.validation.XMLSchemaFactory

Others are to use $java.home/lib/jaxp.properties or set the system property using System.setProperty(...). See http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/validation/SchemaFactory.html#newInstance(java.lang.String) for a description of how the SchemaFactory implementation is found.