Hi Felipe,
Here is a docs page on auto-incremented keys:
http://cwiki.apache.org/confluence/display/CAYDOC/Generated+Columns
Also see my comments below...
On Oct 4, 2006, at 3:13 AM, DOMINGUEZ Felipe wrote:
Hello every body.
I am using Cayenne to query hsqldb.
On HSQLDB I have a few tables with an auto-increment primary key.
When
I manually enter data onto those tables the key generation works fine.
On the other hand cayenne always uses its own key generation,
generating
PK with the support of table AUTO_PK_SUPPORT.
I did some research last night and I found out that I must set the
database custom adapter in the DomainNode adapter panel, so I set
it to
org.objectstyle.cayenne.dba.hsqldb.HSQLDBAdapter
No, in 1.2 and newer this is optional. But you still want to do that
if you are to follow the advice below.
But still, Cayenne uses AUTO_PK_SUPPORT
True, there are two things involved in making auto-increment work.
First you must select "Database-Generated" for "PK Generation
Strategy" for each table in question. Second - Cayenne DbAdapter must
support it. HSQLDB adapter thinks that it doesn't (although in fact
it does), so you'll need to manually flip Auto PK flag:
DataNode node = ...
JdbcAdapter adapter = (JdbcAdapter) node.getAdapter();
adapter.setSupportsGeneratedKeys(true);
(I'll log an issue in Jira to make sure Cayenne does the right thing
in the future).
Andrus
