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44 lines
771 B
Ruby
44 lines
771 B
Ruby
module Arel
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class SelectManager < Arel::TreeManager
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include Arel::Crud
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def initialize engine
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super
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@head = Nodes::SelectStatement.new
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@ctx = @head.cores.last
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end
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def on expr
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@ctx.froms.last.constraint = Nodes::On.new(expr)
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self
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end
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def from table
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@ctx.froms << table
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self
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end
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def project projection
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projection = ::String == projection.class ?
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Nodes::SqlLiteral.new(projection) :
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projection
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@ctx.projections << projection
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self
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end
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def where expr
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@ctx.wheres << expr
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self
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end
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def wheres
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Compatibility::Wheres.new @engine, @ctx.wheres
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end
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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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end
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end
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