2010-09-15 12:26:01 -04:00
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module Arel
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module Nodes
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###
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# Abstract base class for all AST nodes
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class Node
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###
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# Factory method to create a Nodes::Grouping node that has an Nodes::Or
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# node as a child.
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def or right
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Nodes::Grouping.new Nodes::Or.new(self, right)
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end
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###
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# Factory method to create an Nodes::And node.
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def and right
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Nodes::And.new self, right
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end
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2010-09-27 16:12:15 -04:00
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# FIXME: this method should go away. I don't like people calling
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# to_sql on non-head nodes. This forces us to walk the AST until we
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# can find a node that has a "relation" member.
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#
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# Maybe we should just use `Table.engine`? :'(
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def to_sql engine = Table.engine
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viz = Visitors::ToSql.new engine
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viz.accept self
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end
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2010-09-15 12:26:01 -04:00
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end
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end
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end
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