I've got pretty simple mappings of one-2-one relationship generated by XDoclet. I try to persist a parent object, it doesn't throw any exception but it doesn't store any data into DB either.

Oracle9.2
Hibernate 2.1


Mapping:
<hibernate-mapping>
<class
name="com company.DocumentNM"
table="NM_DOCUMENT"
dynamic-update="false"
dynamic-insert="false"
>
<id
name="id"
column="id"
type="java.lang.String"
>
<generator class="uuid.hex">
</generator>
</id>
<one-to-one
name="metadata"
class="com.company.Metadata"
cascade="all"
outer-join="auto"
constrained="false"
/>
<property
name="lastModifier"
type="java.lang.String"
update="true"
insert="true"
column="lastModifier"
not-null="true"
/>
<property
name="lastModified"
type="java.sql.Timestamp"
update="true"
insert="true"
column="lastModified"
not-null="true"
/>
</class>

</hibernate-mapping>

<hibernate-mapping>
<class
name="com.company.Metadata"
table="NM_METADATA"
dynamic-update="false"
dynamic-insert="false"
>
<id
name="id"
column="id"
type="java.lang.String"
>
<generator class="foreign">
<param name="property">documentNM</param>
</generator>
</id>
<property
name="author"
type="java.lang.String"
update="true"
insert="true"
column="author"
/>
<property
name="title"
type="java.lang.String"
update="true"
insert="true"
column="title"
/>

<one-to-one
name="documentNM"
class="com.company.DocumentNM"
cascade="none"
outer-join="auto"
constrained="true"
/>
<property
name="lastModifier"
type="java.lang.String"
update="true"
insert="true"
column="lastModifier"
not-null="true"
/>
<property
name="lastModified"
type="java.sql.Timestamp"
update="true"
insert="true"
column="lastModified"
not-null="true"
/>
</class>
</hibernate-mapping>

Console output:

15:50:00,220 INFO [STDOUT] Hibernate: insert into NM_DOCUMENT (lastModifier, lastModified, id) values (?, ?, ?)
15:50:00,227 INFO [STDOUT] Hibernate: insert into NM_METADATA (author, title, lastModifier, lastModified, id) values (?, ?, ?, ?, ?)


Code:
{
DocumentNM doc = new DocumentNM();
Metadata meta = new Metadata();
meta.setAuthor("John Doe");
meta.setTitle("Test");
doc.setMetadata(meta);
meta.setDocumentNM(doc);

Session session = persistenceMgr.getInstance().getSession("test");
session.save(doc);
}
session.flush();

It doesn't look like you are committing your transaction.

try