hi,
excuse my arrogance for re-posting this, but i haven't found a solution
for the problem described below:
On Tue, 10 Dec 2002 12:34:56 -0500, [EMAIL PROTECTED] said:
> hi,
>
> On Tue, 10 Dec 2002 10:34:30 +1100, "Gavin King" <[EMAIL PROTECTED]>
> said:
> > Oh, so it isn't actually a composite key. I didn't understand
> > properly then. Well, using a UserType is exactly the right
> > approach. You would also need to implement IdentifierGenerator
> > to generate instances of PrimaryKey (your implementation could
> > just wrap up a built-in key generation strategy). This should
> > work out perfectly - if you have any more problems let me know.
> >
> > The mapping would be:
> >
> > <id name="key" type="my.pkg.PrimaryKeyType">
> > <generator class="my.pkg.PrimaryKeyGenerator"/>
> > </id>
>
> i created my own PK generator, but i'm still getting the same exception i
> had before:
>
> cirrus.hibernate.PropertyAccessException: IllegalArgumentException
> occurred while calling setter of test.hibernate.Foo.pk
> at cirrus.hibernate.helpers.ReflectHelper.set(ReflectHelper.java:190)
> at
> cirrus.hibernate.persister.AbstractEntityPersister.setIdentifier(AbstractEntityPersister.java:281)
> at cirrus.hibernate.impl.SessionImpl.doSave(SessionImpl.java:528)
> at cirrus.hibernate.impl.SessionImpl.save(SessionImpl.java:483)
> at cirrus.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:919)
> at
> test.hibernate.ejb.HibTestSessionBean.saveFoo(HibTestSessionBean.java:53)
>
> from Foo.hbm.xml:
>
> <id type="test.hibernate.MyPrimaryKeyType" name="pk" column="id"
> length="16" unsaved-value="null">
> <generator class="test.hibernate.MySequencePKGenerator">
> <param>MY_SEQ</param>
> </generator>
> </id>
>
> Foo.java has:
>
> public PrimaryKey getPk()
> public void setPk(PrimaryKey pk)
> (i tried adding setPk(Long), setPk(String), setPK(long) - that didnt
> chg the exception at all)
>
>
> My pk generator extends SequenceGenerator, and overrides one method as
> follows:
>
> public Serializable generate(SessionImplementor session, Object obj)
> throws SQLException, HibernateException {
> return new PrimaryKey( String.valueOf(super.generate(session, obj)) );
> }
>
>
> the implementation of my UserType is as follows:
>
> private static final int[] TYPES = { Types.VARCHAR };
>
> public int[] sqlTypes() {
> return TYPES;
> }
>
> public Class returnedClass() {
> return PrimaryKey.class;
> }
>
> public boolean equals(Object x, Object y) {
> if (x==y) return true;
> if (x==null || y==null) return false;
> return x.equals(y);
> }
>
> public Object nullSafeGet(ResultSet rs, String[] names, Object owner)
> throws HibernateException, SQLException {
> String id = (String) Hibernate.STRING.nullSafeGet(rs, names[0]);
> return id==null ? null : new PrimaryKey(id);
> }
>
> public void nullSafeSet(PreparedStatement st, Object value, int index)
> throws HibernateException, SQLException {
> String id = (value==null) ? null : ((PrimaryKey)value).getId();
> Hibernate.STRING.nullSafeSet(st, id, index);
> }
>
> public Object deepCopy(Object o) {
> if (o==null) return null;
> return new PrimaryKey( (PrimaryKey)o );
> }
>
> public boolean isMutable() {
> return false;
> }
>
>
> any help would be appreciated :)
>
> viktor
> --
>
> [EMAIL PROTECTED]
>
> --
> http://fastmail.fm - Does exactly what it says on the tin
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