Class: AlgebraDB::Build::SelectList

Inherits:
Struct
  • Object
show all
Defined in:
lib/algebra_db/build/select_list.rb

Overview

Build up a select list.

Defined Under Namespace

Classes: RowDecoder

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*selects) ⇒ SelectList

Returns a new instance of SelectList.



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# File 'lib/algebra_db/build/select_list.rb', line 6

def initialize(*selects)
  super(selects.flat_map { |i| convert_select_item(i) })

  items.each do |i|
    same_name = items.select { |i2| i2.select_alias == i.select_alias }

    raise ArgumentError, "duplicate key #{i.select_alias}" if same_name.count > 1
  end
end

Instance Attribute Details

#items ⇒ Object

Returns the value of attribute items

Returns:

  • (Object) —

    the current value of items



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# File 'lib/algebra_db/build/select_list.rb', line 5

def items
  @items
end

Instance Method Details

#render_syntax(builder) ⇒ Object 



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# File 'lib/algebra_db/build/select_list.rb', line 16

def render_syntax(builder)
  builder.separate(items) do |i, b|
    i.render_syntax(b)
  end
end

#row_decoder ⇒ Object 



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# File 'lib/algebra_db/build/select_list.rb', line 49

def row_decoder
  RowDecoder.new(items)
end