Hi, Just to follow up again, could someone patch CVS -- I dont have access...
Regards, Mark -----Original Message----- From: Mark Rowell [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 20, 2003 12:02 PM To: '[EMAIL PROTECTED]' Subject: Problem with prefetched relationships on extents (and a fix!) Hi I had a problem with prefetched relationships for collections, where the owner of a collection in a relationship is a class that is part of an extent. It manifested itself by when I tried to access the collection in an owner it always had size of zero. I tracked down the problem to CollectionPrefetcher where it gets the owner by identity using the foreign key in the item class in the collection. It was creating an instance of Identity using the real class of the object whereas in RsIterator the owner instance is cached using the top level class in the extent (as the primary keys must be unique across all concrete classes in an extent). Hence I change CollectionPrefetcher thus in the associatedBatched method of CollectionPrefetcher: Existing line of code id = new Identity(getOwnerClassDescriptor().getClassOfObject(), fkValues); Change it to id = new Identity( getBroker().getTopLevelClass(getOwnerClassDescriptor().getClassOfObject()), fkValues ); and collection prefetch should work for all types of owner both concrete and part of an extent. I havent checked the 1:1 relationship prefetcher. As a side not this analysis could have remifications for other places in the code where a new Identity() instance is created. Regards, Mark Rowell ---------------------------------------------------------------- Mark Rowell CreditTrade T: +44 (020) 7400 5078 M: mailto:[EMAIL PROTECTED] CreditTrade Limited is regulated by the FSA. (c) CreditTrade 2002. All rights reserved. The information and data contained in this email is provided for the information purposes of the addressee only and should not be reproduced and/or distributed to any other person. It is provided without any warranty whatsoever and unless stated otherwise consists purely of indicative market prices and other information. Any opinion or comments expressed or assumption made in association with the data or information provided in this email is a reflection of CreditTrades judgement at the time of compiling the data and is subject to change. CreditTrade hereby makes no representation and accepts no responsibility or liability as to the completeness or accuracy of this email. The content of this email is not intended as an offer or solicitation for, or recommendation of, the purchase or sale of any financial instrument, or as an official confirmation of any transaction, and should not be construed as investment advice. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] CreditTrade Limited is regulated by the FSA. (c) CreditTrade 2002. All rights reserved. The information and data contained in this email is provided for the information purposes of the addressee only and should not be reproduced and/or distributed to any other person. It is provided without any warranty whatsoever and unless stated otherwise consists purely of indicative market prices and other information. Any opinion or comments expressed or assumption made in association with the data or information provided in this email is a reflection of CreditTrades judgement at the time of compiling the data and is subject to change. CreditTrade hereby makes no representation and accepts no responsibility or liability as to the completeness or accuracy of this email. The content of this email is not intended as an offer or solicitation for, or recommendation of, the purchase or sale of any financial instrument, or as an official confirmation of any transaction, and should not be construed as investment advice. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
