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37 lines
633 B
Ruby
37 lines
633 B
Ruby
module Arel
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class TreeManager
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# FIXME: Remove this.
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include Arel::Relation
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include Arel::FactoryMethods
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attr_accessor :visitor
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attr_reader :ast, :engine
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def initialize engine
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@engine = engine
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@visitor = Visitors.visitor_for @engine
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@ctx = nil
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end
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def to_dot
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Visitors::Dot.new.accept @ast
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end
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def to_sql
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@visitor.accept @ast
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end
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def initialize_copy other
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super
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@ast = @ast.clone
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end
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def where expr
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if Arel::TreeManager === expr
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expr = expr.ast
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end
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@ctx.wheres << expr
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self
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end
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end
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end
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