Hi,
Honestly, I did not test Hibernate, I only read the documentation.
Hibernate works the other way around from OBJ for modeling the XML.
What I saw for string list is this :
<set name="names" table="NAMES">
<key column="GROUPID"/>
<element column="NAME" type="string"/>
</set>
It seem's simply. You give the "name" property, then the "table" name and
the field (or element here) type.
I think that Hibernate is wrapping each java object naturally.
Regards
Eric
PS : see this link
http://www.hibernate.org/hib_docs/reference/html/collections.html#collection
s-s1-3
-----Message d'origine-----
De : Thomas Dudziak [mailto:[EMAIL PROTECTED]
Envoye : lundi 24 novembre 2003 20:34
A : OJB Users List
Objet : RE: Collection of string
On Mon, 24 Nov 2003 [EMAIL PROTECTED] wrote:
> Hello Thomas,
>
> > -----Original Message-----
> > From: Mahler Thomas [mailto:[EMAIL PROTECTED]
>
> > 1. Define your DB coulm as VARCHAR.
> > 2. in the repository_user.xml you set
> > conversion="org.apache.ojb.broker.accesslayer.
> > conversions.StringVector2Varch arFieldConversion"
> > 3. That's all!
> >
> > All strings of your Vector get concatened and written to the
> > VARCHAR column
> > in human readable form.
>
> that is nice only for collections of bounded size of Strings
> of bounded lengths. Otherwise you get troubles with
> the column length of the database, don't you?
>
Mapping to BLOB/CLOB is certainly better here (using appropriate
conversions), and CLOB might be human readable, but as I understand the
problem, Eric wanted to have each string in a separate row in the
database ?! Can this be handled via a row-reader for class String ?
Eric, can you perhaps give some details on how Hibernate handles this ?
Tom
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