feat: Allow null values set for empty props in neo4j unwind publisher and multiple rels between nodes

[kristenarmes]

Signed-off-by: Kristen Armes [email protected]

Summary of Changes

• Added publisher config PRESERVE_EMPTY_PROPS to Neo4jCsvUnwindPublisher
  • True (default): existing behavior of publishing node or relation properties even if they have empty values
  • False: set empty properties to NULL so they will not show up on the nodes or relations
• Allow multiple relations between the same two nodes when not publishing reverse relations
  • Note: must add key as an attribute for the relation
  • Now has the relation key as part of the merge statement so unique relations will all be published
  • Appends the loader-generated key to the generated file names in case there are more than one for the same groupings of nodes and relations

Tests

N/A

Documentation

N/A

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[allisonsuarez]

looks great! thanks Kristen