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authorMark Longair <mhl@pobox.com>2013-10-07 12:36:28 +0100
committerMark Longair <mhl@pobox.com>2013-10-07 12:53:32 +0100
commitad9036d42de5bd799ca7313c9f3086fffc68136f (patch)
tree19a15687dadb8c503cb169035eb9e14ca4920388 /public/javascripts/jquery.fancybox-1.3.4.pack.js
parent4d648e3e39c9ff0d721f1bf06266893a39c9b118 (diff)
Fix for an aborted transaction not being rolled-back
We were seeing errors in xapian_create_job that indicated that the current transaction had been aborted but not rolled-back. It seems that this happened because sometimes xapian_create_job was called from within another transaction (e.g. from the transaction block in AdminIncomingMessageController#redeliver). The default behaviour of nested transactions in Rails is for them to behave as if all but the outermost transaction blocks had no effect; this means that the exception thrown in the inner transaction block in xapian_create_job wasn't causing a rollback, and it was then being caught before propagating up to the outermost transaction. Thus the transaction was never being rolled-back so any subsequent operation on this database connection would error. This commit fixes this problem by using the :requires_new => true option to transaction, which asks ActiveRecord to fake genuinely nested transcations using SAVEPOINT. Fixes #1124.
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