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package index
import "sync"
type InvertedIndex struct {
Mu sync.RWMutex
Data map[string][]int
DocNames map[int]string
}
func New() *InvertedIndex {
return &InvertedIndex{
Data: make(map[string][]int),
DocNames: make(map[int]string),
}
}
func (idx *InvertedIndex) Add(docID int, title string, tokens []string) {
idx.Mu.Lock()
defer idx.Mu.Unlock()
idx.DocNames[docID] = title
seen := make(map[string]struct{})
for _, token := range tokens {
if _, exists := seen[token]; !exists {
idx.Data[token] = append(idx.Data[token], docID)
seen[token] = struct{}{}
}
}
}
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