Hello! We are wondering how to implement user views in our system. Each our 
users have their own set of genealogical data. The users mostly access only 
their own working data (which may be later merged to common data after 
approval). Their data nodes are identified by linking them to the "User" 
node.

Is the only way to write User match in my Cypher clauses? Could I somehow 
define a pre-filtered active subgraph, where cypher clauses are applied 
(reminding sql view, which is'nt available in Neo4j, see 
https://groups.google.com/d/msg/neo4j/kFa8_ZJYzEM/0KuulGphrTYJ)?

Example: In a query `match (p:Person) --> (e:Event) <-- (n:Place)` each p, 
e, n are owned by current user. My solution is quite cumbersome:

match (u:User {name:"John"})
with u 
    match (u) --> (p:Person), (u) --> (e:Event), (u) --> (x:Place)
with p, e, x
    match (p) --> (e) --> (x)
return p.id, e.id, x.id

The same User match (the first 4 lines) must ne written in all my Cypher 
clauses.

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