Hello;
I thought a follow-up might be worthwhile in case anybody is
searching the list following this thread and to see if I'm doing
anything silly... Basically I solved this one by using the snapshots
to find;
a) the presence of the row-caches in the co-operating object stores
b) the present to the to-many caches in the co-operating object stores
This process identifies the row-caches and to-many caches that need
to be modified to reflect the changes in the data made in another
instance.
What I was then doing was to fiddle the snapshots to update them to
be current based on data that I was shifting around in a change-
notification message from the changing instance. This was difficult,
messy and prone to error. Based on advice, I then accepted that I
would just simply refetch causing database traffic, but less complexity.
I tried to fresh-fetch those EO's based on which ones appeared to
have row-caches in the target co-operating object stores, but despite
using prefetching, the to-many snapshots were left untouched! So it
worked for the to-one relationships and for simple attributes, but
not for to-many's.
The next thing I learnt was that if you invalidate some GID-s in an
editing context then the data is not refreshed in sibling EC's until
some later time (which I won't go into), but if you invalidate the
GID-s on the object store co-ordinator then the changes are
immediately propagated up into the coordinated EC-s straight away and
this seems to finally result in a complete refresh of everything
about the stale EO.
cheers.
Thanks for the advice Mike -- I'll follow up on that early next
week and see if I can resolve this issue.
You say below you're calling "forgetSnapshotForGlobalID(...)". Under
what circumstances? That would likely cause this ... If you have
___
Andrew Lindesay
technology : www.lindesay.co.nz
business : www.silvereye.co.nz
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