Class: DynamoidAdvancedWhere::Nodes::AndNode

Inherits:
BaseNode
  • Object
show all
Includes:
Concerns::Negatable
Defined in:
lib/dynamoid_advanced_where/nodes/and_node.rb

Instance Attribute Summary collapse

Attributes inherited from BaseNode

#expression_prefix

Instance Method Summary collapse

Methods included from Concerns::Negatable

#negate

Constructor Details

#initialize(*child_nodes) ⇒ AndNode

Returns a new instance of AndNode.



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# File 'lib/dynamoid_advanced_where/nodes/and_node.rb', line 21

def initialize(*child_nodes)
  self.child_nodes = child_nodes.freeze
  freeze
end

Instance Attribute Details

#child_nodes ⇒ Object

Returns the value of attribute child_nodes.



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# File 'lib/dynamoid_advanced_where/nodes/and_node.rb', line 19

def child_nodes
  @child_nodes
end

Instance Method Details

#and(other_value) ⇒ Object Also known as: & 



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# File 'lib/dynamoid_advanced_where/nodes/and_node.rb', line 40

def and(other_value)
  AndNode.new(other_value, *child_nodes)
end

#expression_attribute_names ⇒ Object 



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# File 'lib/dynamoid_advanced_where/nodes/and_node.rb', line 32

def expression_attribute_names
  child_nodes.map(&:expression_attribute_names).inject({}, &:merge!)
end

#expression_attribute_values ⇒ Object 



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# File 'lib/dynamoid_advanced_where/nodes/and_node.rb', line 36

def expression_attribute_values
  child_nodes.map(&:expression_attribute_values).inject({}, &:merge!)
end

#to_expression ⇒ Object 



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# File 'lib/dynamoid_advanced_where/nodes/and_node.rb', line 26

def to_expression
  return if child_nodes.empty?

  "(#{child_nodes.map(&:to_expression).join(') and (')})"
end