Re: db4o11-7.4 AbstractMethodError

On Fri, 10 Aug 2012 15:47:35 -0400, Steve Dougherty wrote:
> Any idea what may have changed before this problem started happening?
> What version of ant are you using to build?

That's what I'm pulling my hair trying to find out! I only upgraded a
few system packages on my machine, like glib, libffi, ... -- and
nothing much else! But how can a seemingly unrelated system package
have such a huge effect in a Java environment??

I haven't changed my jdk (although recently I did test with others,
sun-jdk and icedtea-bin), I haven't changed my ant, I haven't changed
my db4o's, I recompiled all of Freenet's (direct) dependencies. This is
incredibly frustrating. I mean, 1407 WAS working before, and now it's
not :S.

Here are the types of AbstractMethodError's that arise:


java.lang.AbstractMethodError:
  com.db4o.internal.query.ObjectSetFacade.iterator()Ljava/util/Iterator;
  at freenet.client.async.ClientRequestScheduler.loadKeyListeners
    (ClientRequestScheduler.java:114)
[code]
ObjectSet<HasKeyListener> results =
  Db4oBugs.query (container, HasKeyListener.class);
for (HasKeyListener l : results) {   <--- ** 114
[/code]


java.lang.AbstractMethodError:
  com.db4o.internal.query.ObjectSetFacade.iterator()Ljava/util/Iterator;
  at freenet.client.async.PersistentStatsPutter.restorePreviousData
    (PersistentStatsPutter.java:44)
[code]
ObjectSet<BandwidthStatsContainer> BSCresult =
  container.query (BandwidthStatsContainer.class);
for (BandwidthStatsContainer candidate : BSCresult) {   <--- ** 44
[/code]
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