Suggestions for storing hierarchical structure

Elastic Stack Elasticsearch
1

Hi,

Looking for suggestions on a business case which is being currently
addressed to.
Following is the sample of data we want to store in elasticsearch in
hierarchical format. It is close to a hierarchical synonym tree.

cine,movies,Entertainment
film,movies,Entertainment

One option is to store the data in a single ES document, as follows :

{
"taxonomyName": "Entertainment",
"taxonomyMembers": [],
"taxonomyHierarchy": [
{
"taxonomyName": "movies",
"taxonomyMembers": [
"cine",
"film"
],
"taxonomyHierarchy": []
}
]
}

Another option is to keep each word into separate ES documents, as follows :

{
"taxonomyName": "Entertainment",
"taxonomyHierarchy": [
{
"taxonomyName": "movies",
"taxonomyMember": "cine"
}
]
}

and

{
"taxonomyName": "Entertainment",
"taxonomyHierarchy": [
{
"taxonomyName": "movies",
"taxonomyMember": "film"
}
]
}

We have dictionary of such words, count reaching up-to several thousands,
having hierarchy level up to 5 so far.
We keep on adding/deleting words in bulk from this dictionary, we often
change hierarchy of several words in bulk.

Which of the above seems to be the better structure to store such data? A
single large json document containing all words? Or many small json
documents each with a single word and its hierarchy? Any suggestions?

Thanks,
-- Sujoy.

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2

Which of the above seems to be the better structure to store such
data? A single large json document containing all words? Or many
small json documents each with a single word and its hierarchy? Any
suggestions?

It depends. how do you want to search the data? That really determines
the best structure for it

clint

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3

Hi,

The requirement is expected to change dynamically .... so hard to tell
right now :slight_smile:
Till now, the objective is to achieve a dictionary proliferation mechanism,
with following functions:

  1. Display the data in a tree-view hierarchy.
  2. Add/remove more elements at any hierarchy level.
  3. Add/remove/edit levels in hierarchy.

Thanks,
-- Sujoy.

On Wednesday, March 13, 2013 6:01:04 PM UTC+5:30, Clinton Gormley wrote:

Which of the above seems to be the better structure to store such
data? A single large json document containing all words? Or many
small json documents each with a single word and its hierarchy? Any
suggestions?

It depends. how do you want to search the data? That really determines
the best structure for it

clint

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