neo4j - How to find related nodes per relationship depth? -

i trying come query following data model in neo4j.

readable-[:readby]-student     |  [:owns]     | readable-[:readby]-student     |  [:owns] -----------------------------------------     |                                             | readable-[:readby]-student           readable-[:readby]-student     |  [:owns]     |   readable-[:readby]-student 

the query:

return students distance first readable in map.

match (:readable{name:'book'})-[:owns*0..3]-(r:readable) match (r)-[:readby]-(s:student) return s 

that query seems correctly traverse tree , find each student @ each distance, can't seem record distance each student return @ end.

i think you're looking length function.

match p = (:readable{name:'book'})-[:owns*0..3]-(:readable)-[:readby]-(s:student) return s.name, length(p); 

edit: map length (key) , collection of students (value):

match p = (:readable{name:'book'})-[:owns*0..3]-(:readable)-[:readby]-(s:student) length(p) len, collect(s) students return {length: len, students: students};