1 files changed, 33 insertions, 9 deletions
diff --git a/core/index/index.go b/core/index/index.go
index 59b315c..2e669fc 100644
--- a/core/index/index.go
+++ b/core/index/index.go
@@ -1,20 +1,20 @@
 package index
 
 import (
+	"encoding/gob"
+	"os"
 	"searchEngine/core/analyzer"
 	"sync"
 )
 
 type Posting struct {
 	DocId          int
-	BodyCount      int
-	TitleCount     int
 	BodyPositions  []int
 	TitlePositions []int
 }
 
 type InvertedIndex struct {
-	Mu       sync.RWMutex
+	Mu       sync.RWMutex `gob:"-"`
 	Data     map[string][]Posting
 	DocNames map[int]string
 }
@@ -30,23 +30,19 @@ func (idx *InvertedIndex) Add(docID int, title string, bodyTokens []string) {
 	titleTokens := analyzer.ProcessText(title)
 
 	type fieldStats struct {
-		body           int
 		bodyPositions  []int
-		title          int
 		titlePositions []int
 	}
 	docStats := make(map[string]fieldStats)
 
 	for position, token := range titleTokens {
 		stats := docStats[token]
-		stats.title++
 		stats.titlePositions = append(stats.titlePositions, position)
 		docStats[token] = stats
 	}
 
 	for position, token := range bodyTokens {
 		stats := docStats[token]
-		stats.body++
 		stats.bodyPositions = append(stats.bodyPositions, position)
 		docStats[token] = stats
 	}
@@ -59,10 +55,38 @@ func (idx *InvertedIndex) Add(docID int, title string, bodyTokens []string) {
 	for token, stats := range docStats {
 		idx.Data[token] = append(idx.Data[token], Posting{
 			DocId:          docID,
-			BodyCount:      stats.body,
-			TitleCount:     stats.title,
 			BodyPositions:  stats.bodyPositions,
 			TitlePositions: stats.titlePositions,
 		})
 	}
 }
+
+func (idx *InvertedIndex) Save(filepath string) error {
+	idx.Mu.RLock()
+	defer idx.Mu.RUnlock()
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	encoder := gob.NewEncoder(file)
+	return encoder.Encode(idx)
+}
+
+func Load(filepath string) (*InvertedIndex, error) {
+	file, err := os.Open(filepath)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	idx := &InvertedIndex{}
+	decoder := gob.NewDecoder(file)
+	err = decoder.Decode(idx)
+	if err != nil {
+		return nil, err
+	}
+	return idx, nil
+}