Hello Peter.
On Mar 8, 2007, at 23:39, Peter Karich wrote:
I want to store (and read) a BitSet into (from) the database.
The long[] array is private and I don't want to hack it by using
reflection or even store this as String with toString :-)
It depend on how you want to store it in the database. PostgreSQL has
a bit string datatype
http://www.postgresql.org/docs/8.2/interactive/datatype-bit.html
Then you create a Extended Type to tell cayenne how to store and
fetch this data type in your application
http://cayenne.apache.org/doc20/extended-types.html
Depending on your jdbc-driver, you may have to encode the bits as a
String in your Extended Type before sending it to the database. This
is currently the case for PostgreSQL, but this may change in the future.
So, how can I transform any object to a byte[] array and vice versa??
Serialization, but your data will then only be usable from java. You
can not use it in a (db-side) query and so on.
Good luck!
Regards,
- Tore.
