Neo4j 1.8.M03 – Related Coffee
From the post:
Released today, Neo4j 1.8.M03 introduces the RELATE clause, a two-step dance of MATCH or CREATE. Also, new Transaction support in the shell let’s you call for a do-over in case you misstep.
The blog entry also points you to the Neo4j Manual entry on Cypher RELATE
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My main machine is still down so I will have to wait to test the latest release (new equipment arrives on Tuesday of the coming week).
But in the mean time, if you read the manual entry, the first paragraph says:
RELATE is in the middle of MATCH and CREATE – it will match what it can, and create what is missing. RELATE will always make the least change possible to the graph – if it can use parts of the existing graph, it will.
I don’t need a working copy of Neo4j/Cypher to say that “RELATE will always make the least change possible to the graph – if it can use part of the existing graph, it will.” is an odd statement.
How is RELATE going to determine the “…least change possible to the graph…”?
That sounds like a very hard problem.
More comments to follow on RELATE.