Cloud Firestore V1 Client - Class FindNearest (1.47.2)

Reference documentation and code samples for the Cloud Firestore V1 Client class FindNearest.

Nearest Neighbors search config. The ordering provided by FindNearest supersedes the order_by stage. If multiple documents have the same vector distance, the returned document order is not guaranteed to be stable between queries.

Generated from protobuf message google.firestore.v1.StructuredQuery.FindNearest

Namespace

Google \ Cloud \ Firestore \ V1 \ StructuredQuery

Methods

__construct

Constructor.

Parameters
Name	Description
`data`	`array` Optional. Data for populating the Message object.
`↳ vector_field`	`FieldReference` Required. An indexed vector field to search upon. Only documents which contain vectors whose dimensionality match the query_vector can be returned.
`↳ query_vector`	`Google\Cloud\Firestore\V1\Value` Required. The query vector that we are searching on. Must be a vector of no more than 2048 dimensions.
`↳ distance_measure`	`int` Required. The distance measure to use, required.
`↳ limit`	`Google\Protobuf\Int32Value` Required. The number of nearest neighbors to return. Must be a positive integer of no more than 1000.
`↳ distance_result_field`	`string` Optional. Optional name of the field to output the result of the vector distance calculation. Must conform to document field name limitations.
`↳ distance_threshold`	`Google\Protobuf\DoubleValue` Optional. Option to specify a threshold for which no less similar documents will be returned. The behavior of the specified `distance_measure` will affect the meaning of the distance threshold. Since DOT_PRODUCT distances increase when the vectors are more similar, the comparison is inverted. For EUCLIDEAN, COSINE: WHERE distance <= distance_threshold For DOT_PRODUCT: WHERE distance >= distance_threshold

getVectorField

Required. An indexed vector field to search upon. Only documents which contain vectors whose dimensionality match the query_vector can be returned.

Returns
Type	Description
`FieldReference\|null`

hasVectorField

clearVectorField

setVectorField

Required. An indexed vector field to search upon. Only documents which contain vectors whose dimensionality match the query_vector can be returned.

Parameter
Name	Description
`var`	`FieldReference`

Returns
Type	Description
`$this`

getQueryVector

Required. The query vector that we are searching on. Must be a vector of no more than 2048 dimensions.

Returns
Type	Description
`Google\Cloud\Firestore\V1\Value\|null`

hasQueryVector

clearQueryVector

setQueryVector

Required. The query vector that we are searching on. Must be a vector of no more than 2048 dimensions.

Parameter
Name	Description
`var`	`Google\Cloud\Firestore\V1\Value`

Returns
Type	Description
`$this`

getDistanceMeasure

Required. The distance measure to use, required.

Returns
Type	Description
`int`

setDistanceMeasure

Required. The distance measure to use, required.

Parameter
Name	Description
`var`	`int`

Returns
Type	Description
`$this`

getLimit

Required. The number of nearest neighbors to return. Must be a positive integer of no more than 1000.

Returns
Type	Description
`Google\Protobuf\Int32Value\|null`

hasLimit

clearLimit

getLimitValue

Returns the unboxed value from getLimit()

Required. The number of nearest neighbors to return. Must be a positive integer of no more than 1000.

Returns
Type	Description
`int\|null`

setLimit

Required. The number of nearest neighbors to return. Must be a positive integer of no more than 1000.

Parameter
Name	Description
`var`	`Google\Protobuf\Int32Value`

Returns
Type	Description
`$this`

setLimitValue

Sets the field by wrapping a primitive type in a Google\Protobuf\Int32Value object.

Required. The number of nearest neighbors to return. Must be a positive integer of no more than 1000.

Parameter
Name	Description
`var`	`int\|null`

Returns
Type	Description
`$this`

getDistanceResultField

Optional. Optional name of the field to output the result of the vector distance calculation. Must conform to document field name limitations.

Returns
Type	Description
`string`

setDistanceResultField

Optional. Optional name of the field to output the result of the vector distance calculation. Must conform to document field name limitations.

Parameter
Name	Description
`var`	`string`

Returns
Type	Description
`$this`

getDistanceThreshold

Optional. Option to specify a threshold for which no less similar documents will be returned. The behavior of the specified distance_measure will affect the meaning of the distance threshold.

Since DOT_PRODUCT distances increase when the vectors are more similar, the comparison is inverted. For EUCLIDEAN, COSINE: WHERE distance <= distance_threshold For DOT_PRODUCT: WHERE distance >= distance_threshold

Returns
Type	Description
`Google\Protobuf\DoubleValue\|null`

hasDistanceThreshold

clearDistanceThreshold

getDistanceThresholdValue

Returns the unboxed value from getDistanceThreshold()

Optional. Option to specify a threshold for which no less similar documents will be returned. The behavior of the specified distance_measure will affect the meaning of the distance threshold. Since DOT_PRODUCT distances increase when the vectors are more similar, the comparison is inverted. For EUCLIDEAN, COSINE: WHERE distance <= distance_threshold For DOT_PRODUCT: WHERE distance >= distance_threshold

Returns
Type	Description
`float\|null`

setDistanceThreshold

Optional. Option to specify a threshold for which no less similar documents will be returned. The behavior of the specified distance_measure will affect the meaning of the distance threshold.

Parameter
Name	Description
`var`	`Google\Protobuf\DoubleValue`

Returns
Type	Description
`$this`

setDistanceThresholdValue

Sets the field by wrapping a primitive type in a Google\Protobuf\DoubleValue object.

Parameter
Name	Description
`var`	`float\|null`

Returns
Type	Description
`$this`