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code/app/app-go/pkg/db/db.go

@@ -1,42 +0,0 @@
-package db
-
-import (
-	"context"
-
-	"github.com/jackc/pgx/v5"
-	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgxpool"
-)
-
-var defaultClient *Client
-
-type Executor interface {
-	Exec(ctx context.Context, sql string, args ...any) (pgconn.CommandTag, error)
-	Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error)
-	QueryRow(ctx context.Context, sql string, args ...any) pgx.Row
-}
-
-type Client struct {
-	pool *pgxpool.Pool
-	tx   pgx.Tx
-}
-
-// Init 初始化
-func Init(pool *pgxpool.Pool) {
-	defaultClient = &Client{pool: pool}
-}
-
-// New 创建会话
-func New() *Client {
-	return &Client{
-		pool: defaultClient.pool,
-	}
-}
-
-// 内部获取执行器（关键）
-func (c *Client) exec() Executor {
-	if c.tx != nil {
-		return c.tx
-	}
-	return c.pool
-}