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Search API Reference

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Search API Reference

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The Custom search experiences guide provides a conceptual walkthrough of the steps involved in issuing search requests on behalf of users via OAuth.

In this API reference

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Search API Overview

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POST http://localhost:3002/api/ws/v1/search

`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`query`	optional	The search query
`page`	optional	Provides optional keys of size and current. Specifies the number of results per page and which page the API should return.
`sort`	optional	Sort results ASC or DESC for a field
`search_fields`	optional	Fields used for full-text matching
`result_fields`	optional	Fields returned in the JSON response
`filters`	optional	Query modifiers used to refine a query
`facets`	optional	Faceting configuration

Search Query

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`query`	optional	A string or number used to find related documents

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "denali"
}'

Pagination

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`page`	optional	Provides optional keys of size and current. Specifies the number of results per page and which page the API should return.
`size`	optional	Specifies the number of results per page. Must be greater than or equal to `1` and less than or equal to `100`.
`current`	optional	Specifies which page of results to retrieve for the query. Must be greater than or equal to `1` and less than or equal to `100`.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "denali",
  "page": {
    "size": 1,
    "current": 1
  }
}'

Limit on results per query

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As described in Pagination, Workplace Search limits page.size to 100 and page.current to 100. Therefore, Workplace Search effectively limits each search query to ten thousand (10000) results.

Work around this limitation by requesting fewer documents. Divide a large set of documents into smaller sets by filtering, perhaps by content source, type, or timestamps (e.g. updated, created). Choose filters that create sets smaller than 10000.

Sorting

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`sort`	optional	Sort results ASC or DESC for one or multiple field
`field`	field	Name of the field used for sorting
`value`	direction	ASC or DESC direction for sorting

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "denali",
  "sort": [
    { "square_km": "desc" },
    { "date_established": "asc" }
  ]
}'

Search Fields

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`search_fields`	optional	Fields used for full-text matching
`field`	field	Name of the field used for full-text matching
`weight`	integer	The relative importance of fields in a query. A higher value represents greater importance for algorithmic scoring.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "denali",
  "search_fields": {
    "title": {
      "weight": 10
    },
    "description": {}
  }
}'

Result Fields

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`result_fields`	optional	Fields returned in the JSON response
`field`	field	Children of the `result_fields` object. Name of the field to be returned in the response
`raw`	result type	Value of the field as originally indexed
`snippet`	result type	Value of the field with highlighting markup added to visually distinguish where the match occurred
`size`	integer	Character length of the returned value
`fallback`	boolean	For `snippet` only. Returns the `raw` value as `snippet` even when no match was highlighted

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "america",
  "result_fields": {
    "title": {
      "raw": {},
      "snippet": {}
    },
    "description": {
      "raw": {
        "size": 50
      },
      "snippet": {
        "fallback": true,
        "size": 50
      }
    },
    "states": {
      "snippet": {
        "size": 50
      }
    }
  }
}'

{
  "meta": {
    ...
  },
  "results": [
    {
      "title": {
        "raw": "American Samoa",
        "snippet": "<em>American</em> Samoa"
      },
      "_meta": {
        "source": "custom",
        "last_updated": "2020-03-27T20:10:33+00:00",
        "content_source_id": "5e7e5d911897c6dbb7e3e72a",
        "id": "park_american-samoa",
        "score": 6.359234
      },
      "source": {
        "raw": "custom"
      },
      "states": {
        "snippet": "<em>American</em> Samoa"
      },
      "description": {
        "raw": "The southernmost National Park is on three Samoan",
        "snippet": "The southernmost National Park is on three Samoan"
      },
      "last_updated": {
        "raw": "2020-03-27T20:10:33+00:00"
      },
      "content_source_id": {
        "raw": "5e7e5d911897c6dbb7e3e72a"
      },
      "id": {
        "raw": "park_american-samoa"
      }
    },
    {
      "title": {
        "raw": "Denali",
        "snippet": null
      },
      "_meta": {
        "source": "custom",
        "last_updated": "2020-03-27T20:10:33+00:00",
        "content_source_id": "5e7e5d911897c6dbb7e3e72a",
        "id": "park_denali",
        "score": 6.357545
      },
      "source": {
        "raw": "custom"
      },
      "states": {
        "snippet": null
      },
      "description": {
        "raw": "Centered on Denali, the tallest mountain in North",
        "snippet": " <em>America</em>, Denali is serviced by a single road"
      },
      "last_updated": {
        "raw": "2020-03-27T20:10:33+00:00"
      },
      "content_source_id": {
        "raw": "5e7e5d911897c6dbb7e3e72a"
      },
      "id": {
        "raw": "park_denali"
      }
    },
    ...
  ]
}

Value Filters

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`filters`	optional	Query modifiers used to refine a query
`field`	field	Name of field upon which to apply your filter
`field value`	field value	The value upon which to filter. The value must be an exact match, even casing: `True` will not match on `true`.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "filters": {
    "states": ["California", "Washington"]
  }
}'

Range Filters

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`filters`	optional	Query modifiers used to refine a query
`field`	field	Name of field upon which to apply your filter
`from`	optional	Inclusive lower bound of the range. Is required if `to` is not provided.
`to`	optional	Exclusive upper bound of the range. Is required if `from` is not provided.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "filters": {
    "visitors": {
      "from": 100
    }
  }
}'

Geo Filters

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`filters`	optional	Query modifiers used to refine a query
`field`	field	Name of field upon which to apply your filter
`center`	required	The mode of the distribution, specified as a latitude-longitude pair. See Geolocation fields.
`unit`	required	The base unit of measurement: `mm`, `cm`, `m` (meters), `km`, `in`, `ft`, `yd`, or `mi` (miles).
`distance`	optional	A number representing the distance unit. Is required if `from` or `to` is not given.
`from`	optional	Inclusive lower bound of the range. Is required if `to` is not provided.
`to`	optional	Exclusive upper bound of the range. Is required if `from` is not provided.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "filters": {
    "location": {
      "unit": "km",
      "center": "47.6062,122.3321",
      "distance": 1000
    }
  }
}'

Combining Filters

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`filters`	optional	Query modifiers used to refine a query
`all`	array	All of the filters must match. This functions as an `AND` condition.
`any`	array	At least one of the filters must match. This functions as an `OR` condition.
`none`	array	All of the filters must not match. This functions as a `NOT` condition.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "filters": {
    "all": [
      {
        "states": ["California", "Washington"]
      },
      {
        "visitors": {
          "from": 100
        }
      },
      {
        "date_established": {
          "to": "1900-01-01"
        }
      }
    ],
    "any": [
      {
        "location": {
          "unit": "km",
          "center": "47.6062,122.3321",
          "distance": 1000
        }
      },
      {
        "location": {
          "unit": "km",
          "center": "37.7749,122.4194",
          "from": 100,
          "to": 10000
        }
      }
    ],
    "none": {
      "world_heritage_site": "true"
    }
  }
}'

Value Facets

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`facets`	optional	Faceting configuration
`field`	field	Name of field upon which to apply your facet
`type`	required	Type of facet, in this case `value`
`name`	optional	Name given to facet
`size`	optional	Between 1 and 250, defaults to 10
`sort`	optional	JSON object where the key is either `count` or `value` and the value is `asc` or `desc`. The default is sorting by descending count.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "facets": {
    "states": {
      "type": "value",
      "name": "top-five-states",
      "sort": { "count": "desc" },
      "size": 5
    }
  }
}'

{
  "meta": {
    ...
  },
  "results": [
    ...
  ],
  "facets": {
    "states": [
      {
        "type": "value",
        "data": [
          {
            "value": "Alaska",
            "count": 5
          },
          {
            "value": "Utah",
            "count": 2
          },
          {
            "value": "Colorado",
            "count": 2
          },
          {
            "value": "California",
            "count": 2
          },
          {
            "value": "Washington",
            "count": 1
          }
        ],
        "name": "top-five-states"
      }
    ],
  }
}

Range Facets

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`facets`	optional	Faceting configuration
`field`	field	Name of field upon which to apply your facet
`type`	required	Type of facet, in this case `range`
`name`	optional	Name given to facet
`ranges`	optional	An array of range objects
`from`	optional	Inclusive lower bound of the range. Is required if `to` is not provided.
`to`	optional	Exclusive upper bound of the range. Is required if `from` is not provided.
`name`	optional	Name given to range

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "facets": {
    "acres": [
      {
        "type": "range",
        "name": "min-and-max-range",
        "ranges": [
          { "from": 1, "to": 10000 },
          { "from": 10000 }
        ]
      }
    ],
    "date_established": {
      "type": "range",
      "name": "half-century",
      "ranges": [
        { "from": "1900-01-01T12:00:00+00:00", "to": "1950-01-01T00:00:00+00:00" }
      ]
    }
  }
}'

{
  "meta": {
    ...
  },
  "results": [
    ...
  ],
  "facets": {
    "acres": [
      {
        "type": "range",
        "name": "min-and-max-range",
        "data": [
          {
            "to": 10000.0,
            "from": 1.0,
            "count": 2
          },
          {
            "from": 10000.0,
            "count": 57
          }
        ]
      }
    ],
    "date_established": [
      {
        "type": "range",
        "name": "half-century",
        "data": [
          {
            "to": "1950-01-01T00:00:00.000Z",
            "from": "1900-01-01T12:00:00.000Z",
            "count": 24
          }
        ]
      }
    ]
  }
}

Geolocation Facets

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`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`facets`	optional	Faceting configuration
`field`	field	Name of field upon which to apply your facet
`type`	required	Type of facet, in this case `range`
`name`	optional	Name given to facet
`ranges`	optional	An array of range objects
`from`	optional	Inclusive lower bound of the range. Is required if `to` is not provided.
`to`	optional	Exclusive upper bound of the range. Is required if `from` is not provided.
`center`	required	The mode of the distribution, specified as a latitude-longitude pair. See Geolocation fields.
`unit`	required	The base unit of measurement: `mm`, `cm`, `m` (meters), `km`, `in`, `ft`, `yd`, or `mi` (miles).
`name`	optional	Name given to range

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "facets": {
    "location": {
      "type": "range",
      "name": "geo-range-from-san-francisco",
      "center": "37.386483, -122.083842",
      "unit": "m",
      "ranges": [
        { "from": 0, "to": 100000, "name": "Nearby" },
        { "from": 100000, "to": 300000, "name": "A longer drive." },
        { "from": 300000, "name": "Perhaps fly?" }
      ]
    }
  }
}'

{
  "meta": {
    ...
  },
  "results": [
    ...
  ],
  "facets": {
    "location": [
      {
        "type": "range",
        "data": [
          {
            "key": "Nearby",
            "from": 0,
            "to": 100000,
            "count": 0
          },
          {
            "key": "A longer drive.",
            "from": 100000,
            "to": 300000,
            "count": 0
          },
          {
            "key": "Perhaps fly?",
            "from": 300000,
            "count": 20
          }
        ],
        "name": "geo-range-from-san-francisco"
      }
    ]
  }
}

Boosts

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Boosting allows you to control the relevance of a document based on criteria for the value of a field (or fields) within a document.

Different boosts are applied to different field types.

Value boosts: text, number, date
Functional boosts: number
Proximity Boosts: number, location
Recency boosts: date

The general format for a single boost looks like so:

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
    "boosts": {
        "(field)": { (boost parameters) },
        "(field_2)": ...,
        ...
    }
}'

The general format for multiple boosts looks like so:

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
    "boosts": {
        "(field)": [
            { (boost parameter 1) },
            { (boost parameter 2) },
            ...
        ]
    }
}'

Value boosts

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A value boost will boost the score of a document based on a direct value match. Available on text, number, and date fields. A document’s overall score will only be boosted once.

`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`boosts`	optional	Faceting configuration
`type`	required	Type of boost. For a value boost, this should be `value`.
`value`	required	The value to exact match on, or use an array to match on multiple values.
`operation`	optional	The arithmetic operation used to combine the original document score with your boost value. Can be `add` or `multiply`. Defaults to `add`.
`factor`	optional	Factor to alter the impact of a boost on the score of a document. Must be between `0.0` and `10.0`. Defaults to `1.0`.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "",
  "sort": { "_score": "desc" },
  "boosts": {
    "states": {
      "type": "value",
      "value": "California",
      "operation": "multiply",
      "factor": 2
    }
  },
  "result_fields": {
    "title": { "raw": {} },
    "visitors": { "raw": {} },
    "states": { "raw": {} }
  },
  "page": {
    "size": 100
  }
}'

{
    "meta": {
      ...
    },
    "results": [
        {
            "title": {
                "raw": "Channel Islands"
            },
            "_meta": {
                "source": "custom",
                "last_updated": "2020-10-22T17:20:58+00:00",
                "content_source_id": "5f91bf7888f9297b02a3d80c",
                "id": "park_channel-islands",
                "score": 2.0
            },
            "source": {
                "raw": "custom"
            },
            "states": {
                "raw": [
                    "California"
                ]
            },
            "last_updated": {
                "raw": "2020-10-22T17:20:58+00:00"
            },
            "visitors": {
                "raw": 364807.0
            },
            "content_source_id": {
                "raw": "5f91bf7888f9297b02a3d80c"
            },
            "id": {
                "raw": "park_channel-islands"
            }
        },
        {
            "title": {
                "raw": "Death Valley"
            },
            "_meta": {
                "source": "custom",
                "last_updated": "2020-10-22T17:20:58+00:00",
                "content_source_id": "5f91bf7888f9297b02a3d80c",
                "id": "park_death-valley",
                "score": 2.0
            },
            "source": {
                "raw": "custom"
            },
            "states": {
                "raw": [
                    "California",
                    "Nevada"
                ]
            },
            "last_updated": {
                "raw": "2020-10-22T17:20:58+00:00"
            },
            "visitors": {
                "raw": 1296283.0
            },
            "content_source_id": {
                "raw": "5f91bf7888f9297b02a3d80c"
            },
            "id": {
                "raw": "park_death-valley"
            }
        },
        ...
    ]
}

Functional boosts

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A functional boost will apply a function to the overall document score based on the value of the numeric field. Only available on number fields.

`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`boosts`	optional	Faceting configuration
`type`	required	Type of boost. For a functional boost, this should be `functional`.
`function`	required	Type of function to calculate the boost value. Can be `linear`, `exponential`, or `logarithmic`.
`operation`	optional	The arithmetic operation used to combine the original document score with your boost value. Can be `add` or `multiply`. Defaults to `add`.
`factor`	optional	Factor to alter the impact of a boost on the score of a document. Must be between `0.0` and `10.0`. Defaults to `1.0`.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "",
  "filters": { "states": ["California"] },
  "sort": { "_score": "desc" },
  "boosts": {
    "visitors": {
      "type": "functional",
      "function": "linear",
      "operation": "multiply",
      "factor": 2
    }
  },
  "result_fields": {
    "title": { "raw": {} },
    "visitors": { "raw": {} }
  }
}'

{
    "meta": {
      ...
    },
    "results": [
        {
            "title": {
                "raw": "Yosemite"
            },
            "_meta": {
                "source": "custom",
                "last_updated": "2020-10-22T17:20:58+00:00",
                "content_source_id": "5f91bf7888f9297b02a3d80c",
                "id": "park_yosemite",
                "score": 1.0057736E7
            },
            "source": {
                "raw": "custom"
            },
            "last_updated": {
                "raw": "2020-10-22T17:20:58+00:00"
            },
            "visitors": {
                "raw": 5028868.0
            },
            "content_source_id": {
                "raw": "5f91bf7888f9297b02a3d80c"
            },
            "id": {
                "raw": "park_yosemite"
            }
        },
        {
            "title": {
                "raw": "Joshua Tree"
            },
            "_meta": {
                "source": "custom",
                "last_updated": "2020-10-22T17:20:58+00:00",
                "content_source_id": "5f91bf7888f9297b02a3d80c",
                "id": "park_joshua-tree",
                "score": 5010572.0
            },
            "source": {
                "raw": "custom"
            },
            "last_updated": {
                "raw": "2020-10-22T17:20:58+00:00"
            },
            "visitors": {
                "raw": 2505286.0
            },
            "content_source_id": {
                "raw": "5f91bf7888f9297b02a3d80c"
            },
            "id": {
                "raw": "park_joshua-tree"
            }
        },
        ...
    ]
}

Proximity boosts

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Boost on the difference of a document value and a given value from the center parameter. Available on number and geolocation fields.

For date fields see recency boosts.

`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`boosts`	optional	Faceting configuration.
`type`	required	Type of boost. For a proximity boost, this should be `proximity`.
`function`	required	Type of function to calculate the boost value. Can be `linear`, `exponential`, or `gaussian`.
`center`	required	The mode of the distribution. Should be a number or a set of geolocation coordinates, like `25.32, -80.93`.
`factor`	optional	Factor to alter the impact of a boost on the score of a document. Must be between `0.0` and `10.0`. Defaults to `1.0`.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "boosts": {
    "location": {
      "type": "proximity",
      "function": "linear",
      "center": "25.32, -80.93",
      "factor": 8
    }
  },
  "query": "old growth"
}'

Recency boosts

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A proximity boost, but with a timeframe as the center instead of a coordinate. Recency boosts are syntactically the same as proximity boosts, however they exclusively operate on a date/time field. In addition, the value for these boosts can use the keyword "now" to specify the center, or origin, of the boost function as the current date/time.

Only applies to date fields.

`access_token`	required	Must be included in HTTP authorization headers, is acquired via an OAuth authorization flow.
`boosts`	optional	Faceting configuration
`type`	required	Type of boost. For a recency boost, this should be `proximity`.
`function`	required	Type of function to calculate the boost value. Can be `linear`, `exponential`, or `gaussian`.
`center`	required	Provide a time-frame. Consider using `now` to establish recency from the present time, or, an ISO 8601 date/time formatted value such as: `1974-01-13T05:15:12.65Z`.
`factor`	optional	Factor to alter the impact of a boost on the score of a document. Must be between `0.0` and `10.0`. Defaults to `1.0`.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "boosts": {
    "date_established": {
      "type": "proximity",
      "function": "linear",
      "center": "1974-01-13T05:15:12.65Z",
      "factor": 8
    }
  },
  "query": "old growth"
}'

Automatic query refinements

edit

Automatic query refinements are on by default.

To disable automatic query refinements, change the boolean value on the automatic_query_refinement top-level field:

{
  …
  "automatic_query_refinement": {true|false, default: true}
  …
}

automatic_query_refinement

optional

Can be true or false. Defaults to true.

curl -X POST http://localhost:3002/api/ws/v1/search \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{
  "query": "documents updated last week",
  "automatic_query_refinement": true
}'

{
  “meta”: {
    …
    “query_refinements”:
      “submitted_query”: “”,
      “decorated_query_html”: “<span class=\"tag tag-filter active highlighted\">documents</span> updated <span class=\"tag tag-filter active highlighted\">last week</span>”
      “refinements”: [
        {
          “term”: “documents”,
          ‘position”: [0,8],
          “trigger_type”: “filter”,
          “trigger_filter_type”: “static”,
          “filter”: {
          “mime_type”: ["application/iwork-keynote-sffkey", "application/iwork-numbers-sffnumbers",… (full list abbreviated here for clarity) … ]”
          }
        },
        {
          “term”: “updated last week”,
          “position”: [10,27],
          “trigger_type”: “filter”,
          “trigger_filter_type”: “static”,
          “filter”: {
            “last_updated”: {
              “from”: "2020-04-10"
            }
          }
        }
      ]
    }
    …
  },
  …
}

A breakdown of the response fields might help you parse and action what you receive:

`submitted_query`	The actual query that is submitted to the underlying Elasticsearch instance. May be transformed based on filter settings.
`decorated_query_html`	The query with the triggered terms and phrases highlighted. You might use this to display the query via HTML with stylistic decoration.
`refinements`	Metadata about each filter or query refinement that was created. Includes the term or phrase, the start and end character position in the original query, the filter type, and the actual filter that was built. You can re-use the returned filter fields in new search queries as they appear.
`trigger_filter_type`	Can be: (1) `static`: a static filter based on a value or range, (2) `dynamic`: a filter based on dynamic fields such as a status, tag, assigned person, or similar, in the document itself, (3) `me`: a specific filter pertaining to the logged in user, or (4) `content`: a filter based on the content source, like GitHub, Slack, and so on.

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