2010-08-14 21:29:32 -04:00
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module Arel
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class UpdateManager < Arel::TreeManager
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def initialize engine
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super
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@head = Nodes::UpdateStatement.new
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end
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2010-09-21 12:20:14 -04:00
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def take limit
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@head.limit = limit
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self
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end
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def order *expr
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@head.orders = expr
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self
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end
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2010-08-14 21:29:32 -04:00
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###
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# UPDATE +table+
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def table table
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@head.relation = table
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self
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end
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2010-08-14 22:48:33 -04:00
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def wheres= exprs
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@head.wheres = exprs
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end
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2010-08-14 21:29:32 -04:00
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def where expr
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@head.wheres << expr
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self
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end
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2010-08-14 22:12:52 -04:00
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def set values
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2010-08-18 12:52:16 -04:00
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if String === values
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@head.values = [values]
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else
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@head.values = values.map { |column,value|
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2010-09-10 16:36:42 -04:00
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Nodes::Assignment.new(
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2010-08-18 12:52:16 -04:00
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Nodes::UnqualifiedColumn.new(column),
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value
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)
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}
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end
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2010-08-14 22:12:52 -04:00
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self
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end
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2010-08-14 21:29:32 -04:00
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end
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end
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