Problem with neo4j-core-java-2.0.1

failed_attempt_batch_import.rb

#Alternative work around during tests


Neo4j::Transaction.run do
  Neo4j.db.each_node do |n|
    n.del unless n.neo_id == 0
  end
end

#VehicleType.all.count #but without this line all VehicleType.count calls are 0 after 'successful import'


import_geoff_rules @an_array_of_geoff_rules

#test output
#Failure/Error: specify { VehicleType.all.to_a.size.should == 1 }
#       expected: 1
#            got: 0 (using ==)

failed_batch_import.rb

#Code within project that causes this issue:

Neo4j.db.shutdown
FileUtils.rm_rf Neo4j::Config[:storage_path]
Neo4j.db.start

VehicleType.all.count #this line causes the included stack trace
    

import_geoff_rules @an_array_of_geoff_rules

    

stacktrace

 NativeException:
       java.lang.NullPointerException: null
     # org/neo4j/kernel/impl/nioneo/xa/ReadTransaction.java:86:in `nodeLoadLight'
     # org/neo4j/kernel/impl/persistence/PersistenceManager.java:82:in `loadLightNode'
     # org/neo4j/kernel/impl/core/NodeManager.java:424:in `getLightNode'
     # org/neo4j/kernel/impl/core/NodeManager.java:441:in `getNodeForProxy'
     # org/neo4j/kernel/AbstractGraphDatabase.java:679:in `lookup'
     # org/neo4j/kernel/impl/core/NodeProxy.java:98:in `getRelationships'
     # org/neo4j/kernel/StandardExpander.java:528:in `doExpand'
     # org/neo4j/kernel/StandardExpander.java:170:in `iterator'
     # org/neo4j/kernel/impl/traversal/TraversalBranchImpl.java:112:in `expandRelationshipsWithoutChecks'
     # org/neo4j/kernel/impl/traversal/TraversalBranchImpl.java:102:in `expandRelationships'
     # org/neo4j/kernel/impl/traversal/StartNodeTraversalBranch.java:43:in `next'
     # org/neo4j/kernel/PreorderBreadthFirstSelector.java:48:in `next'
     # org/neo4j/kernel/impl/traversal/TraverserImpl.java:127:in `fetchNextOrNull'
     # org/neo4j/kernel/impl/traversal/TraverserImpl.java:94:in `fetchNextOrNull'
     # org/neo4j/helpers/collection/PrefetchingIterator.java:55:in `hasNext'
     # org/neo4j/helpers/collection/IteratorWrapper.java:42:in `hasNext'
     # /Users/markburns/.rvm/rubies/jruby-1.6.7.2/lib/ruby/site_ruby/shared/builtin/java/java.lang.rb:12:in `each'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/neo4j-core-2.0.1-java/lib/neo4j-core/traversal/traverser.rb:343:in `each'
     # org/jruby/RubyEnumerable.java:141:in `count'
     # ./lib/batch_importer.rb:39:in `go'
     # ./lib/batch_importer.rb:22:in `import'
     # ./spec/integration/builder_spec.rb:15:in `(root)'
     # org/jruby/RubyBasicObject.java:1730:in `instance_eval'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example.rb:236:in `instance_eval'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/hooks.rb:23:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/hooks.rb:72:in `run'
     # org/jruby/RubyArray.java:1615:in `each'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/hooks.rb:72:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/hooks.rb:424:in `run_hook'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example_group.rb:323:in `run_before_each_hooks'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example.rb:299:in `run_before_each'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example.rb:112:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example.rb:253:in `with_around_each_hooks'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example.rb:110:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example_group.rb:378:in `run_examples'
     # org/jruby/RubyArray.java:2331:in `collect'
     # org/jruby/RubyArray.java:2339:in `collect'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example_group.rb:374:in `run_examples'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example_group.rb:360:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example_group.rb:361:in `run'
     # org/jruby/RubyArray.java:2331:in `collect'
     # org/jruby/RubyArray.java:2339:in `collect'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/example_group.rb:361:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/command_line.rb:28:in `run'
     # org/jruby/RubyArray.java:2331:in `collect'
     # org/jruby/RubyArray.java:2339:in `collect'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/command_line.rb:28:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/reporter.rb:34:in `report'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/command_line.rb:25:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/runner.rb:66:in `run'
     # /Users/markburns/.rvm/gems/jruby-1.6.7.2/gems/rspec-core-2.11.0/lib/rspec/core/runner.rb:8:in `autorun'
     # org/jruby/RubyProc.java:270:in `call'
     # org/jruby/RubyProc.java:224:in `call'

successful_import_workaround.rb

#Alternative work around during tests


Neo4j::Transaction.run do
  Neo4j.db.each_node do |n|
    n.del unless n.neo_id == 0
  end
end

VehicleType.all.count


import_geoff_rules @an_array_of_geoff_rules

#test output
#success

Hmm, sorry for very late reply. Not sure what the import_geoff_rules does.
I guess you are using the java neo4j batch importer. If that's the case then there might be problem with the rule nodes.
A rule node represent a class and does have a counter property.
The counter is keeping updated be using the neo4j event framework. The listener is this class - https://github.com/andreasronge/neo4j-wrapper/blob/master/lib/neo4j-wrapper/rule/event_listener.rb.