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Refactoring, reuse of the NodeTraverser in the HasN class. [#15]
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andreasronge committed Jan 14, 2009
1 parent 1771806 commit ef24122
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Showing 2 changed files with 7 additions and 27 deletions.
33 changes: 6 additions & 27 deletions lib/neo4j/relations/has_n.rb
Expand Up @@ -9,21 +9,19 @@ class HasN
include Enumerable
extend Neo4j::TransactionalMixin

# TODO other_node_class not used ?
def initialize(node, type, &filter)
@node = node
@type = RelationshipType.instance(type)
@traverser = NodeTraverser.new(node.internal_node)
@filter = filter
@stop_evaluator = DepthStopEvaluator.new(1)
@info = node.class.relations_info[type.to_sym]

if @info[:outgoing]
@direction = org.neo4j.api.core.Direction::OUTGOING
@type = RelationshipType.instance(type)
@traverser.outgoing(type)
else
@direction = org.neo4j.api.core.Direction::INCOMING
other_class_type = @info[:type].to_s
@type = RelationshipType.instance(other_class_type)
@traverser.incoming(other_class_type)
end
end

Expand All @@ -41,31 +39,12 @@ def initialize(node, type, &filter)
#
# :api: public
def depth(d)
if d == :all
@stop_evaluator = org.neo4j.api.core.StopEvaluator::END_OF_GRAPH
else
@stop_evaluator = DepthStopEvaluator.new(d)
end
@traverser.depth(d)
self
end

def each
traverser = @node.internal_node.traverse(org.neo4j.api.core.Traverser::Order::BREADTH_FIRST,
@stop_evaluator,
org.neo4j.api.core.ReturnableEvaluator::ALL_BUT_START_NODE,
@type,
@direction)
Neo4j::Transaction.run do
iter = traverser.iterator
while (iter.hasNext) do
node = Neo4j.instance.load_node(iter.next)
if !@filter.nil?
res = node.instance_eval(&@filter)
next unless res
end
yield node
end
end
def each(&block)
@traverser.each(&block)
end


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1 change: 1 addition & 0 deletions test/neo4j/has_n_spec.rb
Expand Up @@ -245,6 +245,7 @@ class Customer
end

it "should find the order using a filter: customer.orders{ order_id == '2'}" do
pending "filter not implemented yet, see ticket 17"
# given
customer = Customer.new
order1 = Order.new{|n| n.order_id = '1'}
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