Class: Neo4j::Cypher::Create

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

Defined Under Namespace

Classes: EvalContext

Constant Summary

Constants included from Clause

Neo4j::Cypher::Clause::NAME, Neo4j::Cypher::Clause::ORDER

Instance Attribute Summary

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=, #prefix, #referenced!, #referenced?, #return_value, #separator, #to_prop_string, #valid_clause?, #var_name, #var_name=

Constructor Details

#initialize(clause_list, props, labels = nil) ⇒ Create

Returns a new instance of Create.



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# File 'lib/neo4j-cypher/create.rb', line 36

def initialize(clause_list, props, labels=nil)
  super(clause_list, :create, EvalContext)
  @props = props unless props && props.empty?
  @labels = labels unless labels && labels.empty?
end

Instance Method Details

#as_create_path! ⇒ Object 



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# File 'lib/neo4j-cypher/create.rb', line 46

def as_create_path!
  @as_create_path = true # this is because create path has a little different syntax (extra parantheses)
end

#as_create_path? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/neo4j-cypher/create.rb', line 42

def as_create_path?
  !!@as_create_path
end

#match_value ⇒ Object 



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# File 'lib/neo4j-cypher/create.rb', line 50

def match_value
  to_cypher
end

#to_cypher ⇒ Object 



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# File 'lib/neo4j-cypher/create.rb', line 54

def to_cypher
  label_suffix = @labels && ":" + @labels.map{|name| "`#{name.to_s}`"}.join(':')

  without_parantheses = if @props
                          "#{var_name}#{label_suffix} #{to_prop_string(@props)}"
                        else
                          "#{var_name}#{label_suffix}"
                        end

  as_create_path? ? without_parantheses : "(#{without_parantheses})"
end