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comparable_creator.go
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comparable_creator.go
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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: hello@weaviate.io
//
package sorter
import "github.com/weaviate/weaviate/entities/storobj"
type comparable struct {
docID uint64
// all property values that will be used for comparison
// most important 1st, least important last
values []interface{}
// additional payload to hold data related to object, not used in sorting process
payload interface{}
}
type comparableCreator struct {
extractor *comparableValueExtractor
propNames []string
}
func newComparableCreator(extractor *comparableValueExtractor, propNames []string) *comparableCreator {
return &comparableCreator{extractor, propNames}
}
func (c *comparableCreator) createFromBytes(docID uint64, objData []byte) *comparable {
return c.createFromBytesWithPayload(docID, objData, nil)
}
func (c *comparableCreator) createFromBytesWithPayload(docID uint64, objData []byte, payload interface{}) *comparable {
values := make([]interface{}, len(c.propNames))
for level, propName := range c.propNames {
values[level] = c.extractor.extractFromBytes(objData, propName)
}
return &comparable{docID, values, payload}
}
// func (c *comparableCreator) createFromObject(object *storobj.Object) *comparable {
// return c.createFromObjectWithPayload(object, nil)
// }
func (c *comparableCreator) createFromObjectWithPayload(object *storobj.Object, payload interface{}) *comparable {
values := make([]interface{}, len(c.propNames))
for level, propName := range c.propNames {
values[level] = c.extractor.extractFromObject(object, propName)
}
return &comparable{object.DocID, values, payload}
}
func (c *comparableCreator) extractDocIDs(comparables []*comparable) []uint64 {
docIDs := make([]uint64, len(comparables))
for i, comparable := range comparables {
docIDs[i] = comparable.docID
}
return docIDs
}
func (c *comparableCreator) extractPayloads(comparables []*comparable,
consume func(i int, docID uint64, payload interface{}) (stop bool),
) {
for i, comparable := range comparables {
if consume(i, comparable.docID, comparable.payload) {
break
}
}
}