Feat: 实现知识图谱数据库的检索方法，并对外提供接口

backend/handlers/graph_handler.go

@@ -8,22 +8,22 @@ import (
 )
 
 type GraphHandler struct {
-	dataService *services.DataService
+	service services.GraphService
 }
 
-func NewGraphHandler(dataService *services.DataService) *GraphHandler {
+func NewGraphHandler(service services.GraphService) *GraphHandler {
 	return &GraphHandler{
-		dataService: dataService,
+		service: service,
 	}
 }
 
 func (h *GraphHandler) GetGraphData(c *gin.Context) {
-	data := h.dataService.GetGraphData()
+	data := h.service.GetGraphData()
 	c.JSON(http.StatusOK, data)
 }
 
 func (h *GraphHandler) GetStats(c *gin.Context) {
-	stats := h.dataService.GetStats()
+	stats := h.service.GetStats()
 	c.JSON(http.StatusOK, gin.H{
 		"stats": stats,
 		"timestamp": gin.H{

backend/handlers/node_handler.go

@@ -8,12 +8,12 @@ import (
 )
 
 type NodeHandler struct {
-	dataService *services.DataService
+	service services.GraphService
 }
 
-func NewNodeHandler(dataService *services.DataService) *NodeHandler {
+func NewNodeHandler(service services.GraphService) *NodeHandler {
 	return &NodeHandler{
-		dataService: dataService,
+		service: service,
 	}
 }
 
@@ -27,7 +27,7 @@ func (h *NodeHandler) GetNodeByID(c *gin.Context) {
 		return
 	}
 
-	node, found := h.dataService.GetNodeByID(nodeID)
+	node, found := h.service.GetNodeByID(nodeID)
 	if !found {
 		c.JSON(http.StatusNotFound, gin.H{
 			"error":   "Not Found",
@@ -49,7 +49,7 @@ func (h *NodeHandler) GetNeighbors(c *gin.Context) {
 		return
 	}
 
-	neighbors, found := h.dataService.GetNeighbors(nodeID)
+	neighbors, found := h.service.GetNeighbors(nodeID)
 	if !found {
 		c.JSON(http.StatusNotFound, gin.H{
 			"error":   "Not Found",

backend/handlers/search_handler.go

@@ -8,12 +8,12 @@ import (
 )
 
 type SearchHandler struct {
-	dataService *services.DataService
+	service services.GraphService
 }
 
-func NewSearchHandler(dataService *services.DataService) *SearchHandler {
+func NewSearchHandler(service services.GraphService) *SearchHandler {
 	return &SearchHandler{
-		dataService: dataService,
+		service: service,
 	}
 }
 
@@ -27,7 +27,7 @@ func (h *SearchHandler) SearchNodes(c *gin.Context) {
 		return
 	}
 
-	results := h.dataService.SearchNodes(query)
+	results := h.service.SearchNodes(query)
 
 	c.JSON(http.StatusOK, results)
 }