I have the following data structure:
Each [OWNS] relation has a property: share. So for example, A owns 100% of B and 100% of C, and B owns 45% of D and C owns 5% of D. I want to compute the total share that A owns of D. I can do that using the following:
MATCH (n:Company) where n.company_id IN [companyA_id, companyD_id] WITH collect(n) as nodes UNWIND nodes as n UNWIND nodes as m WITH * WHERE id(n) < id(m) MATCH path = allShortestPaths( (n)-[*..10]-(m) ) return REDUCE(total_share = 0.0, share in collect(REDUCE(share = 1.0, owner IN relationships(path) | share*owner .andel)) | total_share + share) as total_share
So far, so good. But what if I want to return all nodes in the tree that has A at the head of the branch, with the total share owned for each node in the tree? I can't quite wrap my head around how to do that. And what if I want to return all the nodes in the tree that has a total share of more than 50% (with their share)? So I want to return all the b's with their total shares in this tree:
MATCH tree = (a:Company)-[owners:OWNS*0..10]->(b:Company) return tree
I can do it by using another language to call neo4j repeatedly, but it would be great if cypher could do it on it's on.