indexing
	description:
		"Data transactions"

	status:	"See note at end of class"
	date: "$Date$"
	revision: "$Revision$"

deferred class 
	TRANSACTION

feature -- Access

	source: DATA_RESOURCE is
			-- Current source
		deferred
		end
	
	target: DATA_RESOURCE is
			-- Current target
		deferred
		end
	
feature -- Measurement

	count: INTEGER is
			-- Number of transactions
		deferred
		end
	 
feature -- Status report

	is_correct: BOOLEAN is
			-- Is transaction set up correctly?
		deferred
		end
	 
	error: BOOLEAN is
			-- Has an error occurred in current transaction?
		do
			Result := source.error or target.error
		end

	succeeded: BOOLEAN is
			-- Has the transaction succeeded?
		deferred
		end
	 
feature -- Status setting

	reset_error is
			-- Reset error flag.
		deferred
		end
	 
feature -- Basic operations

	execute is
			-- Execute transaction.
		require
			correct_transaction: is_correct
		deferred
		end
	 
end -- class TRANSACTION

--|----------------------------------------------------------------
--| EiffelNet: library of reusable components for ISE Eiffel.
--| Copyright (C) 1985-2004 Eiffel Software. All rights reserved.
--| Duplication and distribution prohibited.  May be used only with
--| ISE Eiffel, under terms of user license.
--| Contact Eiffel Software for any other use.
--|
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--| dba Eiffel Software
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