MeiliSearch/milli
bors[bot] ac5a1e4c4b
Merge #3423
3423: Add min and max facet stats r=dureuill a=dureuill

# Pull Request

## Related issue
Fixes #3426

## What does this PR do?

### User standpoint

- When using a `facets` parameter in search, the facets that have numeric values are displayed in a new section of the response called `facetStats` that contains, per facet, the numeric min and max value of the hits returned by the search.

<details>
<summary>
Sample request/response
</summary>

```json
❯ curl \
  -X POST 'http://localhost:7700/indexes/meteorites/search?facets=mass' \
  -H 'Content-Type: application/json' \
  --data-binary '{ "q": "LL6", "facets":["mass", "recclass"], "limit": 5 }' | jsonxf
{
  "hits": [
    {
      "name": "Niger (LL6)",
      "id": "16975",
      "nametype": "Valid",
      "recclass": "LL6",
      "mass": 3.3,
      "fall": "Fell"
    },
    {
      "name": "Appley Bridge",
      "id": "2318",
      "nametype": "Valid",
      "recclass": "LL6",
      "mass": 15000,
      "fall": "Fell",
      "_geo": {
        "lat": 53.58333,
        "lng": -2.71667
      }
    },
    {
      "name": "Athens",
      "id": "4885",
      "nametype": "Valid",
      "recclass": "LL6",
      "mass": 265,
      "fall": "Fell",
      "_geo": {
        "lat": 34.75,
        "lng": -87.0
      }
    },
    {
      "name": "Bandong",
      "id": "4935",
      "nametype": "Valid",
      "recclass": "LL6",
      "mass": 11500,
      "fall": "Fell",
      "_geo": {
        "lat": -6.91667,
        "lng": 107.6
      }
    },
    {
      "name": "Benguerir",
      "id": "30443",
      "nametype": "Valid",
      "recclass": "LL6",
      "mass": 25000,
      "fall": "Fell",
      "_geo": {
        "lat": 32.25,
        "lng": -8.15
      }
    }
  ],
  "query": "LL6",
  "processingTimeMs": 15,
  "limit": 5,
  "offset": 0,
  "estimatedTotalHits": 42,
  "facetDistribution": {
    "mass": {
      "110000": 1,
      "11500": 1,
      "1161": 1,
      "12000": 1,
      "1215.5": 1,
      "127000": 1,
      "15000": 1,
      "1676": 1,
      "1700": 1,
      "1710.5": 1,
      "18000": 1,
      "19000": 1,
      "220000": 1,
      "2220": 1,
      "22300": 1,
      "25000": 2,
      "265": 1,
      "271000": 1,
      "2840": 1,
      "3.3": 1,
      "3000": 1,
      "303": 1,
      "32000": 1,
      "34000": 1,
      "36.1": 1,
      "45000": 1,
      "460": 1,
      "478": 1,
      "483": 1,
      "5500": 2,
      "600": 1,
      "6000": 1,
      "67.8": 1,
      "678": 1,
      "680.5": 1,
      "6930": 1,
      "8": 1,
      "8300": 1,
      "840": 1,
      "8400": 1
    },
    "recclass": {
      "L/LL6": 3,
      "LL6": 39
    }
  },
  "facetStats": {
    "mass": {
      "min": 3.3,
      "max": 271000.0
    }
  }
}
```

</details>

## PR checklist
Please check if your PR fulfills the following requirements:
- [ ] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
- [ ] Have you read the contributing guidelines?
- [ ] Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!


Co-authored-by: Louis Dureuil <louis@meilisearch.com>
2023-02-22 13:06:43 +00:00
..
src Merge #3423 2023-02-22 13:06:43 +00:00
tests clippy: --fix 2023-01-31 11:12:59 +01:00
Cargo.toml Merge #3347 2023-02-21 10:52:13 +00:00
README.md Add a README to the milli crate 2023-01-16 16:25:12 +01:00

the milli logo

a concurrent indexer combined with fast and relevant search algorithms

Introduction

This crate contains the internal engine used by Meilisearch.

It contains a library that can manage one and only one index. Meilisearch manages the multi-index itself. Milli is unable to store updates in a store: it is the job of something else above and this is why it is only able to process one update at a time.