I'm in ShardedSessionImpl, and trying to save my first instance of an object.

ShardId getShardIdOfRelatedObject(Object obj) {
ClassMetadata cmd = getClassMetadata(obj.getClass()); // returns null
Type[] types = cmd.getPropertyTypes(); // java.lang.NullPointerException

I'm using Hibernate 3.0 w/ annotations, and getClassMetadata returns null, and hence the subsequent command fails.

Does this have something to do w/ the fact that I'm using annotations to configure my hibernate mapping instead of a .hbm.xml file?

++++++++++

I've commented out the annotations and added the following hbm.xml file, and still get the null pointer exception:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="com.companyname.Doc" table="DOC">
<cache usage="read-write"/>
<id name="id" column="GUID" type="binary"/>
<property name="currentVersion" column="CURRENT_VERSION" type="INT" />
<property name="publishDate" column="PUBLISH_DATE" />
<property name="extractionDate" column="EXTRACTION_DATE" />
<property name="schemaId" column="SCHEMA_ID" />
<property name="docSourceId" column="DOC_SOURCE_ID" />
<property name="authorId" column="AUTHOR_ID" />
<property name="process" column="PROCESS" />
</class>
</hibernate-mapping>