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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package inverted
import (
"bytes"
"encoding/binary"
"fmt"
"time"
"github.com/pkg/errors"
)
func (s *Searcher) extractNumberValue(in interface{}) ([]byte, error) {
value, ok := in.(float64)
if !ok {
return nil, fmt.Errorf("expected value to be float64, got %T", in)
}
return LexicographicallySortableFloat64(value)
}
// assumes an untyped int and stores as string-formatted int64
func (s *Searcher) extractIntValue(in interface{}) ([]byte, error) {
value, ok := in.(int)
if !ok {
return nil, fmt.Errorf("expected value to be int, got %T", in)
}
return LexicographicallySortableInt64(int64(value))
}
// assumes an untyped int and stores as string-formatted int64
func (s *Searcher) extractIntCountValue(in interface{}) ([]byte, error) {
value, ok := in.(int)
if !ok {
return nil, fmt.Errorf("expected value to be int, got %T", in)
}
return LexicographicallySortableUint64(uint64(value))
}
// assumes an untyped bool and stores as bool64
func (s *Searcher) extractBoolValue(in interface{}) ([]byte, error) {
value, ok := in.(bool)
if !ok {
return nil, fmt.Errorf("expected value to be bool, got %T", in)
}
buf := bytes.NewBuffer(nil)
if err := binary.Write(buf, binary.LittleEndian, value); err != nil {
return nil, errors.Wrap(err, "encode bool as binary")
}
return buf.Bytes(), nil
}
// assumes a time.Time date and stores as string-formatted int64, if it
// encounters a string it tries to parse it as a time.Time
func (s *Searcher) extractDateValue(in interface{}) ([]byte, error) {
var asInt64 int64
switch t := in.(type) {
case string:
parsed, err := time.Parse(time.RFC3339, t)
if err != nil {
return nil, errors.Wrap(err, "trying parse time as RFC3339 string")
}
asInt64 = parsed.UnixNano()
case time.Time:
asInt64 = t.UnixNano()
default:
return nil, fmt.Errorf("expected value to be time.Time (or parseable string)"+
", got %T", in)
}
return LexicographicallySortableInt64(asInt64)
}
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