Hi,

I'm a bit puzzled with an ActiveRecord::StatementInvalid exception
that's apparently being thrown twice.

I'm using Rails 2.3.3 and Postgres, and inside the Feed Model I have
something like:

has_many :entries, :dependent => :delete_all

def process_feed
  ...
  process_feed_entries
  # log saving feed
  save! # will fail if an exception is thrown below
end

def process_feed_entries
  ...
  begin
    # log saving entry
    entry.save!  # can fail because of duplicate key values
  rescue ActiveRecord::StatementInvalid => e
    # log exception caught
    # log the error in the db (Log Model)
  end
end

DB log:

* Saving entry
BEGIN
PGError: ERROR: duplicate key value ... : INSERT INTO "entries" ...
ROLLBACK
* Exception caught
BEGIN
INSERT INTO "logs" ...
COMMIT
* Saving feed
BEGIN
UPDATE "feeds" ...
PGError: ERROR: duplicate key value ... : INSERT INTO "entries"
ROLLBACK
ActiveRecord::StatementInvalid: PGError: ERROR:  duplicate key ...
Stack trace

The last exception that terminates execution was (or should have been)
caught inside the begin/rescue block. Why is it thrown again when the
feed is saved, if the transaction was rolled back?

Any hints much appreciated!

Thanks,

--
Adriano

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