please send a patch to our JIRA bug tracker so we don't forget this. Aslak
----- Original Message ----- From: Lennart Petersson <[EMAIL PROTECTED]> Date: Friday, March 21, 2003 11:08 am Subject: [Xdoclet-user] hashCode() in genereated pk > Looked in template for pk from 1.2b2 that hashCode() is used in > the > same way as in the old ejbdoclet that we still use. We recently > had a > problem with this implementation. > > Hashcode is initiated to Integer.MIN_VALUE and calculated only if > the > cached hashcode is equal to Integer.MIN_VALUE. And that works ok > as > long as the PK stays within a JVM. We had a situation where this > didn't > work that well. JBoss uses the PK as a key in internal entity > caches. > We had a situation where a PK was sent within a bigger dataobject > to a > client JVM. There some entity fields where changed and then sent > back > to the server. What happened during the deserialization was that > the > transient hashcode was initiated to 0 and hence never recalculated > since it differed from Integer.MIN_VALUE. Back on the server a > findByPrimaryKey was issued using this 'incorrect' PK which > resulted in > a load from database and a second instance of the same entity in > cache. > We solved this in our ejbdoclet by changing hashcode to be > initiated to > 0 instead of Integer.MIN_VALUE. Could also be done by extending > the > check if hashcode should be calculated to include test if it is 0. > > Whats your oppinion about this? I think the change should be > implemented in current codebase. > > /Lennart > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > xdoclet-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/xdoclet-user > ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ xdoclet-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/xdoclet-user
