Error when generating Java Classes from XSD

Question

I'm getting the following error when using oragc to generate Java classes from a schema:
Error: Schema Class Generator failed to generate classes. oracle.xml.parser.schema.XSDException: Invalid facet 'pattern' in element 'simpleType'
Any thoughts?
Here's the part where it is getting the error:
+111 <!-- Timestamp Type - Timezone portion is required and fractional seconds are prohibited -->
+112 <xsd:simpleType name="TimestampType">
+113 <xsd:annotation>
+114 <xsd:documentation>Base type for a date and time stamp</xsd:documentation>
+115 </xsd:annotation>
+116 <xsd:restriction base="xsd:dateTime">
+117 <xsd:pattern value="[1-9][0-9]{3}\-.+T[^\.]+(Z|[\+\-].+)" />
+118 </xsd:restriction>
+119 </xsd:simpleType>

Answer 1

I would recommend using JAXB instead of the Oracle class generator. This will give a standards based object-to-XML platform.
Oracle provides two JAXB implementations: one in the TopLink product, and the other in the XDK.
For an example of using TopLink JAXB see:
http://www.oracle.com/technology/products/ias/toplink/technical/tips/jaxb/index.htm
TopLink also provides the ability to map existing Java objects to an existing XML Schema, for an example of this see:
http://www.oracle.com/technology/products/ias/toplink/technical/tips/ox/index.htm
-Blaise