For example I have a path:
1-[:A]->2-[:B]->3
And we can use the * operator to define if a particular edge can be repeated. I would like to use the * operator on the entire path, or both edges combined. I would like to follow: (A AND B) zero or more times.
Example:
1-[:A]->2-[:B]->3-[:A]->4-[:B]->5...
I am not sure how to apply the * operator for the entire path in Cypher. My intent is to express a pattern that allows a specific path to be repeated 0 or more times.
This is something variable-length patterns cannot do in Cypher. However, because of this, we added repeating sequences functionality to path expander procs in APOC Procedures .
As an example:
MATCH (n)
WHERE id(n) = 123
CALL apoc.path.expandConfig(n, {relationshipFilter:'A>, B>'}) YIELD path
RETURN path
This expands from a start node ( n
) expanding out only a repeating sequence of outgoing :A and :B relationships. No minLevel or maxLevel properties were provided, so this has a minimum of 0 length and no bounds on max length.
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