This article demonstrates three approaches for storing tree like structures with NoSQL databases on example of the MongoDB.
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use TreeMongo;
var path=[]
var item = db.categoriesNSO.findOne({_id:"Nokia"})
var ancestors = db.categoriesNSO.find({left:{$lt:item.left}, right:{$gt:item.right}}).sort({left:1})
while(true === ancestors.hasNext()) {
var child = ancestors.next();
path.push(child._id);
}
path.join('/')
// Electronics/Cell_Phones_and_Accessories/Cell_Phones_and_Smartphones
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