class MongoQL::Expression::Projection
Attributes
expression[RW]
field[RW]
Public Class Methods
new(field, expression = 1)
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# File lib/mongo_ql/expression/projection.rb, line 7 def initialize(field, expression = 1) @expression = case expression when 0, 1 expression when Expression::FieldNode expression else raise ArgumentError, "#{expression&.inspect} is not a valid project expression" end @field = case field when String, Symbol Expression::FieldNode.new(field) when Expression::FieldNode field else raise ArgumentError, "#{field&.inspect} is not a valid project field" end end
Public Instance Methods
to_ast()
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# File lib/mongo_ql/expression/projection.rb, line 27 def to_ast { field.to_s => expression } end