Class: Neo4j::Cypher::ReturnItem

Inherits:
Object
  • Object
show all
Includes:
Clause
Defined in:
lib/neo4j-cypher/return.rb

Overview

The return statement in the cypher query

Defined Under Namespace

Classes: EvalContext

Constant Summary

Constants included from Clause

Clause::NAME, Clause::ORDER

Instance Attribute Summary collapse

Attributes included from Clause

#clause_list, #clause_type, #eval_context, #expr, #insert_order

Instance Method Summary collapse

Methods included from Clause

#<=>, #alias_name, #as_alias, #as_alias?, #clause_position, #create_clause_args_for, #match_value, #match_value=, #prefix, #referenced!, #referenced?, #separator, #to_prop_string, #valid_clause?, #var_name=

Constructor Details

#initialize(clause_list, name_or_ref) ⇒ ReturnItem

Returns a new instance of ReturnItem.



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# File 'lib/neo4j-cypher/return.rb', line 89

def initialize(clause_list, name_or_ref)
  super(clause_list, :return_item, EvalContext)
  if name_or_ref.respond_to?(:clause)
    @delegated_clause = name_or_ref.clause
    @delegated_clause.referenced!
    as_alias(@delegated_clause.alias_name) if @delegated_clause.as_alias?
  else
    @return_value = name_or_ref.to_s
  end
end

Instance Attribute Details

#order_by ⇒ Object

Returns the value of attribute order_by.



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# File 'lib/neo4j-cypher/return.rb', line 87

def order_by
  @order_by
end

Instance Method Details

#return_value ⇒ Object 



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# File 'lib/neo4j-cypher/return.rb', line 108

def return_value
  @delegated_clause ? @delegated_clause.return_value : @return_value
end

#return_value_with_alias ⇒ Object 



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# File 'lib/neo4j-cypher/return.rb', line 104

def return_value_with_alias
  as_alias? ? "#{return_value} as #{alias_name}" : return_value
end

#var_name ⇒ Object 



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# File 'lib/neo4j-cypher/return.rb', line 100

def var_name
  @var_name || (@delegated_clause && @delegated_clause.var_name) || @return_value.to_sym
end