61 lines
1.1 KiB
Plaintext
61 lines
1.1 KiB
Plaintext
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note
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description: "[
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Objects which record their creation time.
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]"
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date: "1 Sep 04"
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date: "1 Jan 99"
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author: "Jimmy J. Johnson"
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copyright: "Copyright 2009, Jimmy J. Johnson"
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license: "Eiffel Forum License v2 (see forum.txt)"
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URL: "$URL:$"
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date: "$Date: 2009-06-25 21:37:23 -0400 (Thu, 25 Jun 2009) $"
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revision: "$Revision: 7 $"
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class
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TIME_STAMPABLE
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inherit
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ANY
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redefine
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default_create
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end
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create
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default_create
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feature {NONE} -- Initialization
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default_create
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-- Initialize `Current'.
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do
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create timestamp.set_now_utc_fine
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end
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feature -- Access
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id: STRING
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-- Unique (hopefully) object id based on the creation time of the object.
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-- Concatination of Current's `generating_type' and `time_stamp'.
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do
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Result := generating_type.name.to_string_8 + " " + timestamp.as_string
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end
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timestamp: YMDHMS_TIME
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-- Time this object was created
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--feature -- Comparison
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-- infix "<" (a_other: like Current): BOOLEAN is
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-- -- Is Current less than `a_other'?
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-- do
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-- Result := id < a_other.id
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---- Result := timestamp < a_other.timestamp
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-- end
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invariant
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time_stamp_exists: timestamp /= Void
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end
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