Miroslav Nachev wrote:
I try to use it but I have the following exception:
java.lang.IllegalArgumentException: Unknown entity: java.util.UUID
at
org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:223)
at psqluuidtest.Main.persist(Main.java:33)
On Wed, 17 Dec 2008, Miroslav Nachev wrote:
Thank you very much. How can I map PostgreSQL UUID to JPA Hibernate with
annotations? Serializable or BigInteger or byte[] or java.util.UUID?
The server uuid type is already mapped to java.util.UUID in recent JDBC
driver versions:
http://archiv
And how to specify that bytea MUST be exact 16 bytes? What about the speed
because this is very important?
1st of all when the length is variable then the speed is low.
2nd when the column is with bigger length which require pointer to the data
instead data, then the speed will be extremely low.
Dear Heikki,
Thank you very much. How can I map PostgreSQL UUID to JPA Hibernate with
annotations? Serializable or BigInteger or byte[] or java.util.UUID?
The big disadvantage of bytea is that it is not possible to use that type in
indexes and primary keys. Probably this restriction is because is
Miroslav Nachev wrote:
And how to specify that bytea MUST be exact 16 bytes?
Well, you could put a constraint on the column, or create a domain with
such a constraint. But if you're dealing with uuids, you really want to
use the UUID data type anyway.
What about the speed
because this is v
(please keep the mailing list cc'd. (or take this to a more relevant
list, actually)).
Miroslav Nachev wrote:
Thank you very much. How can I map PostgreSQL UUID to JPA Hibernate with
annotations? Serializable or BigInteger or byte[] or java.util.UUID?
No idea.
The big disadvantage of bytea
Miroslav Nachev wrote:
Most of the popular databases (Oracle, MySQL, MS SQL, etc.) support binary
column type which can be used as primary key. For example UUID algorithm
need of exact 16 bytes and is very useful for Primary Key. Of course it can
be presented with characters in Hex format but in
The following bug has been logged online:
Bug reference: 4586
Logged by: Miroslav Nachev
Email address: m...@space-comm.com
PostgreSQL version: 8.3
Operating system: Windows
Description:Supporting of Binary instead Bytea for Primary Keys
Details:
Most of the popular
