class Innodb::UndoLog::UndoRecordCursor
Public Class Methods
new(undo_log, offset, direction = :forward)
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# File lib/innodb/undo_log.rb, line 93 def initialize(undo_log, offset, direction = :forward) @initial = true @undo_log = undo_log @offset = offset @direction = direction case offset when :min @undo_record = @undo_log.min_undo_record when :max raise "Not implemented" else @undo_record = @undo_log.undo_record(offset) end end
Public Instance Methods
each_undo_record() { |rec| ... }
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# File lib/innodb/undo_log.rb, line 133 def each_undo_record return enum_for(:each_undo_record) unless block_given? while (rec = undo_record) yield rec end end
next_undo_record()
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# File lib/innodb/undo_log.rb, line 109 def next_undo_record rec = @undo_record.next @undo_record = rec if rec end
prev_undo_record()
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# File lib/innodb/undo_log.rb, line 114 def prev_undo_record rec = @undo_record.prev @undo_record = rec if rec end
undo_record()
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# File lib/innodb/undo_log.rb, line 119 def undo_record if @initial @initial = false return @undo_record end case @direction when :forward next_undo_record when :backward prev_undo_record end end