Re: JDBCAdaptor@b447de failed to provide new primary keys
Re: JDBCAdaptor@b447de failed to provide new primary keys
- Subject: Re: JDBCAdaptor@b447de failed to provide new primary keys
- From: Miguel Arroz <email@hidden>
- Date: Sun, 6 Jan 2008 00:20:39 +0000
Hi!
databaseContextNewPrimaryKey
NSDictionary databaseContextNewPrimaryKey(EODatabaseContext dbCtxt,
Object object,
EOEntity entity)
Invoked if the newly inserted Enterprise Object object doesn't have
a primary key set. The delegate can implement custom primary key
generation, or return null, in which case the database context
dbCtxt will send a primaryKeyForNewRowWithEntity message to an
EOAdaptorChannel to generate the key.
Should return a dictionary containing the attribute or attributes
(if object has a compound primary key) that make up object's
primary key, or null to have the database context generate the
primary key.
Parameters:
dbCtxt - The database context.
object - A newly inserted Enterprise Object.
entity - The EOEntity object for primary key generation.
Returns:
Should return a dictionary containing the attribute or attributes
that make up object's primary key, or null.
See Also:
EOAdaptorChannel#primaryKeyForNewRowWithEntity( EOEntity entity)
<http://developer.apple.com/documentation/MacOSXServer/Reference/
WO54_Reference/com/webobjects/eoaccess/
EODatabaseContext.Delegate.html#databaseContextNewPrimaryKey
(com.webobjects.eoaccess.EODatabaseContext, java.lang.Object,%
20com.webobjects.eoaccess.EOEntity)>
I think so. I don't know why they made in an Object and not an
EOEnterpriseRecord, but I'm dumb, so there's probably a good reason. :)
Yours
Miguel Arroz
On 2008/01/06, at 00:11, Don Lindsay wrote:
Hello the second parameter to the function, is it the object that
is going to be inserted?
Thanks,
don
public NSDictionary databaseContextNewPrimaryKey(EODatabaseContext
dbCtxt, Object object, EOEntity entity) {
NSMutableDictionary newPrimaryKey = new NSMutableDictionary();
NSArray entityPrimaryKeys = entity.primaryKeyAttributeNames();
...
return newPrimaryKey;
}
On Jan 5, 2008, at 6:20 PM, Don Lindsay wrote:
Thank you all for your help.
Don
On Jan 5, 2008, at 5:46 PM, Miguel Arroz wrote:
Hi!
And check this out too: <http://developer.apple.com/documentation/
WebObjects/Enterprise_Objects/Saving/chapter_8_section_8.html#//
apple_ref/doc/uid/TP30001011-CH208-BADJEBIB>.
Never used compound keys myself, so I can't help much more. Good
luck!
Yours
Miguel Arroz
On 2008/01/05, at 22:37, David LeBer wrote:
On 5-Jan-08, at 5:16 PM, Don Lindsay wrote:
Hello;
One of the primary keys is a date field, how would the system
set this date?
If your model is not written in stone, I'd recommend you model a
separate PK devoid of any real value beyond being a DB artifact.
Your life will be easier in the long run.
If making changes is not an option, you can look here for
details on custom PK generation:
<http://developer.apple.com/documentation/WebObjects/
Enterprise_Objects/Saving/chapter_8_section_7.html>
don
On Jan 5, 2008, at 5:11 PM, Miguel Arroz wrote:
Hi!
On 2008/01/05, at 22:05, Don Lindsay wrote:
I am using an oracle database. Anytime I attempt to insert a
record in any table I get the following error:
com.webobjects.jdbcadaptor.JDBCAdaptor@b447de failed to
provide new primary keys for entity 'WeaponAssignment'
I have set all of the primary key attributes before
attempting to insert the object. So I am kind of confused
why I keep receiving this message.
I don't understand what you mean by this. You have set the
primary keys manually on the object? If you did, than that's
the problem, that's the job of EOF, not yours. :)
Yours
Miguel Arroz
;david
--
David LeBer
Codeferous Software
'co-def-er-ous' adj. Literally 'code-bearing'
site: http://codeferous.com
blog: http://davidleber.net
profile: http://www.linkedin.com/in/davidleber
--
Toronto Area Cocoa / WebObjects developers group:
http://tacow.org
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