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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package aggregator
import (
"errors"
"github.com/weaviate/weaviate/entities/aggregation"
)
func addReferenceAggregations(prop *aggregation.Property,
aggs []aggregation.Aggregator, agg *refAggregator,
) {
prop.ReferenceAggregation = aggregation.Reference{}
prop.ReferenceAggregation.PointingTo = agg.PointingTo()
for _, aProp := range aggs {
switch aProp {
case aggregation.PointingToAggregator:
prop.ReferenceAggregation.PointingTo = agg.PointingTo()
default:
continue
}
}
}
func newRefAggregator() *refAggregator {
return &refAggregator{valueCounter: map[string]uint64{}}
}
type refAggregator struct {
count uint64
valueCounter map[string]uint64
}
func (a *refAggregator) AddReference(ref map[string]interface{}) error {
a.count++
beacon, ok := ref["beacon"].(string)
if !ok {
return errors.New("not a reference" + beacon)
}
count := a.valueCounter[beacon]
count++
a.valueCounter[beacon] = count
return nil
}
func (a *refAggregator) PointingTo() []string {
keys := make([]string, 0, len(a.valueCounter))
for pointingTo := range a.valueCounter {
keys = append(keys, pointingTo)
}
return keys
}
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