init elowdb go-port commit

2026-03-03 14:36:38 +06:00
commit 1f31ab074b
41 changed files with 7273 additions and 0 deletions
--- a/examples/basic/main.go
+++ b/examples/basic/main.go
@@ -0,0 +1,124 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"linedb/pkg/linedb"
+)
+
+type User struct {
+	ID      int    `json:"id"`
+	Name    string `json:"name"`
+	Email   string `json:"email"`
+	Age     int    `json:"age"`
+	Created string `json:"created"`
+}
+
+func main() {
+	// Создаем опции инициализации
+	initOptions := &linedb.LineDbInitOptions{
+		CacheSize: 1000,
+		CacheTTL:  5 * time.Minute,
+		DBFolder:  "./data",
+		Collections: []linedb.JSONLFileOptions{
+			{
+				CollectionName: "users",
+				AllocSize:      512,
+				IndexedFields:  []string{"id", "email", "name"},
+			},
+		},
+	}
+
+	// Создаем базу данных
+	db := linedb.NewLineDb(nil)
+
+	// Инициализируем базу данных
+	if err := db.Init(false, initOptions); err != nil {
+		log.Fatalf("Failed to init database: %v", err)
+	}
+	defer db.Close()
+
+	// Создаем тестовых пользователей
+	users := []any{
+		map[string]any{
+			"name":    "John Doe",
+			"email":   "john@example.com",
+			"age":     30,
+			"created": time.Now().Format(time.RFC3339),
+		},
+		map[string]any{
+			"name":    "Jane Smith",
+			"email":   "jane@example.com",
+			"age":     25,
+			"created": time.Now().Format(time.RFC3339),
+		},
+		map[string]any{
+			"name":    "Bob Johnson",
+			"email":   "bob@example.com",
+			"age":     35,
+			"created": time.Now().Format(time.RFC3339),
+		},
+	}
+
+	// Вставляем пользователей
+	if err := db.Insert(users, "users", linedb.LineDbAdapterOptions{}); err != nil {
+		log.Fatalf("Failed to insert users: %v", err)
+	}
+
+	fmt.Println("Users inserted successfully!")
+
+	// Читаем всех пользователей
+	allUsers, err := db.Read("users", linedb.LineDbAdapterOptions{})
+	if err != nil {
+		log.Fatalf("Failed to read users: %v", err)
+	}
+
+	fmt.Printf("Total users: %d\n", len(allUsers))
+	for i, user := range allUsers {
+		fmt.Printf("User %d: %+v\n", i+1, user)
+	}
+
+	// Ищем пользователя по email
+	filter := map[string]any{"email": "john@example.com"}
+	foundUsers, err := db.ReadByFilter(filter, "users", linedb.LineDbAdapterOptions{})
+	if err != nil {
+		log.Fatalf("Failed to filter users: %v", err)
+	}
+
+	fmt.Printf("Found %d users with email john@example.com\n", len(foundUsers))
+	for _, user := range foundUsers {
+		fmt.Printf("Found user: %+v\n", user)
+	}
+
+	// Обновляем пользователя
+	updateData := map[string]any{"age": 31}
+	updateFilter := map[string]any{"email": "john@example.com"}
+	updatedUsers, err := db.Update(updateData, "users", updateFilter, linedb.LineDbAdapterOptions{})
+	if err != nil {
+		log.Fatalf("Failed to update user: %v", err)
+	}
+
+	fmt.Printf("Updated %d users\n", len(updatedUsers))
+
+	// Удаляем пользователя
+	deleteFilter := map[string]any{"email": "bob@example.com"}
+	deletedUsers, err := db.Delete(deleteFilter, "users", linedb.LineDbAdapterOptions{})
+	if err != nil {
+		log.Fatalf("Failed to delete user: %v", err)
+	}
+
+	fmt.Printf("Deleted %d users\n", len(deletedUsers))
+
+	// Читаем оставшихся пользователей
+	remainingUsers, err := db.Read("users", linedb.LineDbAdapterOptions{})
+	if err != nil {
+		log.Fatalf("Failed to read remaining users: %v", err)
+	}
+
+	fmt.Printf("Remaining users: %d\n", len(remainingUsers))
+	for i, user := range remainingUsers {
+		fmt.Printf("Remaining user %d: %+v\n", i+1, user)
+	}
+}