How to search against a deep tree-like structure in MongoDB? -


the simplest way explain situation standard filesystem structure close want accomplish:

folder - folder a2 -- file 1 -- file 2 - file 3 folder b - folder b2 - folder b3 -- file 4

folder has fields:

- _id - parents (in case there can multiple!)

file has fields

- _id - targetfolder

so, file deep in hierarchy.

how search , structure db efficiently can have deep folder hierarchies, of them having files.

i want able query returns every file under e.g. folder a. how this?

i recommend mongodb official documentation of topic. storing trees in database non trivial , every solution have pro , cons. experienced materialized paths model, efficient on hierachy search expensive on tree modification because have update every descendant node.


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