XML Schema Class Generator Problem compiling generated java programs

Question

Hi,
I ran oracg on the po.xsd schema from X3Cs XML Schema Part 0: Primer which successfully generated the java codes. I ran into problems when I compile the generated classes. Here's what I'm getting:
C:\oracle\xml\xdk\demo\java\classgen\Po2>javac -classpath ".;C:\oracle\xml/lib/xmlparserv2.jar;C:\oracle\xml/lib/xschema.jar;C:\oracle\xml/l
ib/classgen.jar;.;C:\Program Files\VicunaJ521\java\lib\collections.jar;C:\Program Files\VicunaJ521\java\lib\vicunalite.jar;C:\Program Files\
XConverter\XConverter.jar;C:\Program Files\XConverter\IDLGenerator.jar; c:\jdk1.2.2\lib\dt.jar;c:\jdk1.2.2\lib\jvm.jar;c:\jdk1.2.2\lib\tools
.jar;c:\oracle\ora81\jdbc\lib\classes12.zip;c:\oracle\ora81\jdbc\nls_charset12.zip;C:\oracle\xml\lib\classgen.jar;C:\oracle\xml\lib\xmlparse
rv2.jar" *.java
.\types\PurchaseOrderType.java:75: Type expected.
public void addComment(null.Comment thecomment)
^
.\types\Items.java:141: Type expected.
public void addComment(null.Comment thecomment)
^
2 errors
Running the demo which comes with oracles version of po.xsd was OK. What's the difference between the po.xsd from oracle and the po.xsd from W3C? Are there any W3C recommendation for XML Schema not supported by Oracle's class generator?

Answer 1

Which po.xsd do you use? Would you post it?
Thanks. Here's the copy of the po.xsd from the W3C website. (http://www.w3.org/TR/xmlschema-0/#po.xsd)
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:annotation>
<xsd:documentation xml:lang="en">
Purchase order schema for Example.com.
Copyright 2000 Example.com. All rights reserved.
</xsd:documentation>
</xsd:annotation>
<xsd:element name="purchaseOrder" type="PurchaseOrderType"/>
<xsd:element name="comment" type="xsd:string"/>
<xsd:complexType name="PurchaseOrderType">
<xsd:sequence>
<xsd:element name="shipTo" type="USAddress"/>
<xsd:element name="billTo" type="USAddress"/>
<xsd:element ref="comment" minOccurs="0"/>
<xsd:element name="items" type="Items"/>
</xsd:sequence>
<xsd:attribute name="orderDate" type="xsd:date"/>
</xsd:complexType>
<xsd:complexType name="USAddress">
<xsd:sequence>
<xsd:element name="name" type="xsd:string"/>
<xsd:element name="street" type="xsd:string"/>
<xsd:element name="city" type="xsd:string"/>
<xsd:element name="state" type="xsd:string"/>
<xsd:element name="zip" type="xsd:decimal"/>
</xsd:sequence>
<xsd:attribute name="country" type="xsd:NMTOKEN"
fixed="US"/>
</xsd:complexType>
<xsd:complexType name="Items">
<xsd:sequence>
<xsd:element name="item" minOccurs="0" maxOccurs="unbounded">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="productName" type="xsd:string"/>
<xsd:element name="quantity">
<xsd:simpleType>
<xsd:restriction base="xsd:positiveInteger">
<xsd:maxExclusive value="100"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="USPrice" type="xsd:decimal"/>
<xsd:element ref="comment" minOccurs="0"/>
<xsd:element name="shipDate" type="xsd:date" minOccurs="0"/>
</xsd:sequence>
<xsd:attribute name="partNum" type="SKU" use="required"/>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<!-- Stock Keeping Unit, a code for identifying products -->
<xsd:simpleType name="SKU">
<xsd:restriction base="xsd:string">
<xsd:pattern value="\d{3}-[A-Z]{2}"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>