Release 0.3.1

CHANGELOG

@@ -1,3 +1,11 @@
+== 0.3.1 / 2009-07-25
+ * Feature, extension -	find path between given pair of nodes (#58)
+ * Fix a messy exception on GET /nodes/UnknownClassName (#57)
+ * Bug  - exception on GET /nodes/classname/rel if rel is a has_one relationship (#56)
+ * Bug: GET /nodes/classname missing out nodes with no properties (#55)
+ * Bug: Lucene sorting caused exception if there were no documents (#54)
+ * Bug:	reindexer fails to connect nodes to the IndexNode (#53)
+
 == 0.3.0 / 2009-06-25
 * Neo4j should track node changes
 * RESTful support for lucene queries, sorting and paging

README.rdoc

@@ -53,7 +53,8 @@ This page contains the following information:
 * Ten Minute Tutorial
 * Lucene API Documentation
 * Neo4j API Documentation
-* Extensions: REST (see Neo4j::RestMixin)
+* Extension: REST (see Neo4j::RestMixin)
+* Extension: find_path
 * Ruby on Rails with Neo4j.rb
 
 There is also some complete examples in the example folder
@@ -1426,9 +1427,22 @@ It requires the following gems
 For RSpec testing it also needs:
  * rack-test
 
-For more information see the test/rest/example.rb or the examples/admin or Neo4j::RestMixin.
+For more information see the examples/rest/example.rb or the examples/admin or Neo4j::RestMixin.
 
 
+== Extension: find_path
+
+Extension which finds the shortest path (in terms of number of links) between
+two nodes. Use something like this:
+
+   require 'neo4j/extensions/find_path'
+   node1.traverse.both(:knows).depth(:all).path_to(node2)
+   # => [node1, node42, node1234, node256, node2]
+
+This extension is still rather experimental. The algorithm is based on the one
+used in the Neo4j Java IMDB example. For more information see Neo4j::Relationships::NodeTraverser#path_to
+or the RSpec find_path_spec.rb.
+
 == Ruby on Rails with Neo4j.rb
 
 Neo4j.rb does work nicely with R&R.

lib/neo4j/extensions/tx_tracker.rb

@@ -255,9 +255,13 @@ def create_node_with_uuid(uuid)
     #
 
     def self.on_neo_started(neo_instance)
-      return if neo_instance.ref_node.relationship?(:tx_node_list)
-      @tx_node_list = TxNodeList.new # cache this so we do not have to look it up always
-      neo_instance.ref_node.relationships.outgoing(:tx_node_list) << @tx_node_list
+      # has the tx_node_list already been created ?
+      unless neo_instance.ref_node.relationship?(:tx_node_list)
+        # it does not exist - create it
+        neo_instance.ref_node.relationships.outgoing(:tx_node_list) << TxNodeList.new
+      end
+      # cache this so we do not have to look it up always
+      @tx_node_list = neo_instance.ref_node.relationships.outgoing(:tx_node_list).nodes.first 
       Neo4j.event_handler.add(@tx_node_list)
     end
 
@@ -269,6 +273,7 @@ def self.on_neo_stopped(neo_instance)
 
 
     def self.instance
+      Neo4j.start unless @tx_node_list
       @tx_node_list
     end
   end

lib/neo4j/version.rb

@@ -1,3 +1,3 @@
 module Neo4j
-  VERSION = '0.3.0' unless defined?(Neo4j::VERSION)
+  VERSION = '0.3.1' unless defined?(Neo4j::VERSION)
 end