create unique node with a property value as array will not create the node

[lisongmin1]

NEO4J.batch [:create_unique_node, "properties_checksum", "properties_checksum", "076da301619e83cff84025301cf9b4adaa34a8251", {"measure_value"=>[50, 60], "properties_checksum"=>"076da301619e83cff84025301cf9b4adaa34a825"}]
return nil
if run NEO4J.batch [:create_unique_node, "properties_checksum", "properties_checksum", "076da301619e83cff84025301cf9b4adaa34a8251", {"measure_value"=>[50, 60].to_s, "properties_checksum"=>"076da301619e83cff84025301cf9b4adaa34a825"}]
will create a node

[rdvdijk]

I noticed that this does not work outside of batch either:

@neo.create_unique_node("index", "key1", "value1", { :a => [1,2] })

I see the following IllegalArgumentException stack-trace:

org.neo4j.kernel.impl.nioneo.store.PropertyStore.encodeValue(PropertyStore.java:582)
org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.nodeAddProperty(WriteTransaction.java:1252)
org.neo4j.kernel.impl.persistence.PersistenceManager.nodeAddProperty(PersistenceManager.java:146)
org.neo4j.kernel.impl.core.NodeManager.nodeAddProperty(NodeManager.java:895)
org.neo4j.kernel.impl.core.NodeImpl.addProperty(NodeImpl.java:120)
org.neo4j.kernel.impl.core.Primitive.setProperty(Primitive.java:436)
org.neo4j.kernel.impl.core.NodeImpl.setProperty(NodeImpl.java:53)
org.neo4j.kernel.impl.core.NodeProxy.setProperty(NodeProxy.java:130)
org.neo4j.server.rest.web.DatabaseActions$UniqueNodeFactory.initialize(DatabaseActions.java:1069)
org.neo4j.server.rest.web.DatabaseActions$UniqueNodeFactory.initialize(DatabaseActions.java:1053)
org.neo4j.graphdb.index.UniqueFactory.getOrCreate(UniqueFactory.java:205)
org.neo4j.server.rest.web.DatabaseActions.getOrCreateIndexedNode(DatabaseActions.java:965)
org.neo4j.server.rest.web.RestfulGraphDatabase.addToNodeIndex(RestfulGraphDatabase.java:791)
java.lang.reflect.Method.invoke(Method.java:597)

I suspect this is a Neo4j bug, I'll investigate further.

Also note that your workaround with the [50, 60].to_s will not create a proper node with an array property value, but a field with the string "[50, 60]".

[rdvdijk]

This is indeed a Neo4j bug: neo4j/neo4j#64.