Hi Mark, > -----Urspr�ngliche Nachricht----- > Von: Mark Rowell [mailto:Mark.Rowell@;credittrade.com] > Gesendet: Dienstag, 29. Oktober 2002 09:51 > An: '[EMAIL PROTECTED]' > Betreff: Design question re time series > > > Hi > > I am currently storing time series using collection proxies. > All well and > good so far but I have a feeling that > when my time series get larger then as soon as I hit one > element of a time > series collection everything will be loaded.
I don't know your datamodel, but if you are using proxies properly they should avoid loading of complete object nets. Did you make sure what exactly happens once you "hit one element"? You could use P6Spy to trace the executed SQL statements (see faq.html for details). > Is the way round this to implement my own collection class? The loading mechanism for user defined collection works in the same way as for "normal" collections. So this won't improve things... If your problem is related to loading the N side of a 1:n association you might have a look at the association prefetch feature (http://jakarta.apache.org/ojb/query.html#prefetched%20relationships). This could drastically improve performance. cheers, Thomas > > Thanks > > Mark Rowell > > ---------------------------------------------------------------- > Mark Rowell > CreditTrade > > T: +44 (020) 7400 5078 > M: mailto:mark.rowell@;credittrade.com > > 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: > <mailto:ojb-user-unsubscribe@;jakarta.apache.org> > For additional commands, e-mail: > <mailto:ojb-user-help@;jakarta.apache.org> > > -- To unsubscribe, e-mail: <mailto:ojb-user-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:ojb-user-help@;jakarta.apache.org>
