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44 lines
1.4 KiB
Markdown
44 lines
1.4 KiB
Markdown
# GetIntersection
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## Request and response syntax
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A `GetIntersection` call takes as input a `GfsIntersectionRequest` thrift struct.
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```thrift
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struct GfsIntersectionRequest {
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1: required i64 userId
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2: required list<i64> candidateUserIds
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3: required list<FeatureType> featureTypes
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}
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```
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The response is returned in a `GfsIntersectionResponse` thrift struct.
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```thrift
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struct GfsIntersectionResponse {
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1: required i64 userId
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2: required list<GfsIntersectionResult> results
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}
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struct GfsIntersectionResult {
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1: required i64 candidateUserId
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2: required list<IntersectionValue> intersectionValues
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}
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struct IntersectionValue {
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1: required FeatureType featureType
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2: optional i32 count
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3: optional list<i64> intersectionIds
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4: optional i32 leftNodeDegree
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5: optional i32 rightNodeDegree
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}(persisted="true")
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```
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## Behavior
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The `GfsIntersectionResponse` contains in its `results` field a `GfsIntersectionResult` for every candidate in `candidateIds` which contains an `IntersectionValue` for every `FeatureType` in the request's `featureTypes` field.
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The `IntersectionValue` contains the size of the intersection between the `leftEdgeType` edges from `userId` and the `rightEdgeType` edges from `candidateId` in the `count` field, as well as their respective degrees in the graphs in `leftNodeDegree` and `rightNodeDegree` respectively.
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**Note:** the `intersectionIds` field currently only contains `Nil`.
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