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Contents
module Neo4j
module Rails
# This method is typically used in an Rails ActionController as a filter method.
# It will guarantee that an transaction is create before your action is called,
# and that the transaction is finished after your action is called.
#
# Example:
# class MyController < ActionController::Base
# around_filter Neo4j::Rails::Transaction, :only => [:edit, :delete]
# ...
# end
class Transaction
class << self
def current
Thread.current[:neo4j_transaction]
end
def running?
Thread.current[:neo4j_transaction] != nil
end
def fail?
Thread.current[:neo4j_transaction_fail] != nil
end
def fail
Thread.current[:neo4j_transaction_fail] = true
end
def success
Thread.current[:neo4j_transaction_fail] = nil
end
def finish
tx = Thread.current[:neo4j_transaction]
tx.success unless fail?
tx.finish
Thread.current[:neo4j_transaction] = nil
Thread.current[:neo4j_transaction_fail] = nil
end
def filter(*, &block)
run &block
end
def run
if running?
yield self
else
begin
new
ret = yield self
rescue
fail
raise
ensure
finish
end
ret
end
end
private
def new
Thread.current[:neo4j_transaction] = Neo4j::Transaction.new
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems