Class: MongoQL::Stage::Match

Inherits:
MongoQL::Stage show all
Defined in:
lib/mongo_ql/stage/match.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ctx, *conds, **field_filters) ⇒ Match

Returns a new instance of Match.



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# File 'lib/mongo_ql/stage/match.rb', line 7

def initialize(ctx, *conds, **field_filters)
  @ctx = ctx
  conds.each do |c|
    raise ArgumentError, "#{c.inspect} is not a valid MongoQL::Expression" unless c.is_a?(MongoQL::Expression)
  end
  @conditions    = conds
  @field_filters = field_filters
end

Instance Attribute Details

#conditions ⇒ Object

Returns the value of attribute conditions.



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# File 'lib/mongo_ql/stage/match.rb', line 5

def conditions
  @conditions
end

#ctx ⇒ Object

Returns the value of attribute ctx.



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# File 'lib/mongo_ql/stage/match.rb', line 5

def ctx
  @ctx
end

#field_filters ⇒ Object

Returns the value of attribute field_filters.



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# File 'lib/mongo_ql/stage/match.rb', line 5

def field_filters
  @field_filters
end

Instance Method Details

#to_ast ⇒ Object 



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# File 'lib/mongo_ql/stage/match.rb', line 16

def to_ast
  conds = {}
  if compose_conditions
    conds["$expr"] = compose_conditions
  end
  ast = { "$match" => conds.merge(field_filters) }
  MongoQL::Utils.deep_transform_values(ast, &MongoQL::EXPRESSION_TO_AST_MAPPER)
end