QueryFactory¶

This class builds and executes a Cypher query, using information from the graph objects to determine: whether they need to be created simultaneously. It keeps the rel instance from being responsible for inspecting the nodes or talking with Shared::QueryFactory.

Constants¶

NODE_SYMBOLS

Files¶

lib/neo4j/active_rel/persistence/query_factory.rb:5

Methods¶

#build!

TODO: This feels like it should also wrap the rel, but that is handled in Neo4j::ActiveRel::Persistence at the moment. Builds and executes the query using the objects giving during init. It holds the process:

Execute node callbacks if needed

Create and execute the query

Mix the query response into the unpersisted objects given during init

def build!
  node_before_callbacks! do
    res = query_factory(rel, rel_id, iterative_query).query.unwrapped.return(*unpersisted_return_ids).first
    node_symbols.each { |n| wrap!(send(n), res, n) }
    @unwrapped_rel = res.send(rel_id)
  end
end

#from_node

Returns the value of attribute from_node

def from_node
  @from_node
end

#initialize

def initialize(from_node, to_node, rel)
  @from_node = from_node
  @to_node = to_node
  @rel = rel
end

#rel

Returns the value of attribute rel

def rel
  @rel
end

#to_node

Returns the value of attribute to_node

def to_node
  @to_node
end

#unwrapped_rel

Returns the value of attribute unwrapped_rel

def unwrapped_rel
  @unwrapped_rel
end