I tried you suggestion, in the following composite-id form:
<composite-id name="id"
class="org.appfuse.persistence.ChildId" unsaved-value="none">
<key-property column="record_num" length="22" name="recordNum"
type="long"/>
<key-many-to-one name="parentId" class="java.lang.Long"
column="parent_id" />
</composite-id>
And now I get:
[junit] org.appfuse.persistence.DAOException:
cirrus.hibernate.MappingException: An association
refers to an unmapped class: java.lang.Long
So I thought, "hmmm, maybe the class should be my parent" - and I tried
that:
<key-many-to-one name="parentId" class="org.appfuse.persistence.Parent"
column="parent_id" />
and I got:
[junit] org.appfuse.persistence.DAOException:
cirrus.hibernate.PropertyAccessException: IllegalA
rgumentException occurred while calling setter of
org.appfuse.persistence.ChildId.parentId
Any ideas are appreciated.
Matt
> -----Original Message-----
> From: jiesheng zhang [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, February 05, 2003 12:59 AM
> To: '[EMAIL PROTECTED]'
> Subject: Re: [Hibernate] Parent / Child Mapping with composite-id
>
>
> > <hibernate-mapping>
> > <class name="org.appfuse.persistence.Child"
> > table="child">
> > <composite-id name="id"
> > class="org.appfuse.persistence.ChildId"
> > unsaved-value="none">
> > <key-property column="parent_id"
> > length="22" name="parentId"
> > type="long"/>
> Try this:
> <key-many-to-one name="parent" column="parent_id"
> type="long" cascade="none"/>
> and remove the the <many-to-one> below.
>
>
>
>
>
> > <key-property column="record_num"
> > length="22" name="recordNum"
> > type="long"/>
> > </composite-id>
> > <property column="name" length="30"
> > name="name" type="string"/>
> > <property column="description" length="100"
> > name="description"
> > type="string"/>
> > <many-to-one name="parent"
> > column="parent_id" not-null="true"/>
> > </class>
> > </hibernate-mapping>
> >
> > I get:
> >
> > [junit] java.sql.BatchUpdateException: General
> > error: Column 'parent_id'
> > specified twice
> >
> >
> > To make it work, I've specified readonly="true" on
> > the parent's mapping, and
> > explicity saved the child objects. This seems to be
> > the desired path for
> > using Hibernate? Am I correct?
> >
> > Parent's mapping:
> >
> > <bag role="children" table="child"
> > readonly="true" cascade="all">
> > <key column="parent_id" length="22" />
> > <one-to-many
> > class="org.appfuse.persistence.Child"/>
> > </bag>
> >
> > In order to update properly:
> >
> > Iterator it =
> > p.getChildren().iterator();
> >
> > while (it.hasNext()) {
> > Child c = (Child) it.next();
> > ses.update(c);
> > }
> >
> > ses.update(p);
> > ses.flush();
> >
> > Thanks,
> >
> > Matt
> >
> >
> >
> >
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