draft

backend/internal/model/order_sequence.go

@@ -0,0 +1,25 @@
+package model
+
+import "time"
+
+// SeqType 序列类型
+type SeqType string
+
+const (
+	SeqTypeTrade   SeqType = "TRADE"
+	SeqTypeRefund  SeqType = "REFUND"
+	SeqTypeSharing SeqType = "SHARING"
+)
+
+// OrderSequence 订单编码序列
+type OrderSequence struct {
+	ID           uint64    `gorm:"column:id;primaryKey;autoIncrement"`
+	AppID        string    `gorm:"column:app_id;size:32;not null;uniqueIndex:uk_app_type"`
+	SeqType      SeqType   `gorm:"column:seq_type;size:20;not null;uniqueIndex:uk_app_type"`
+	Prefix       string    `gorm:"column:prefix;size:8;not null"`
+	CurrentValue uint64    `gorm:"column:current_value;not null;default:0"`
+	Step         int       `gorm:"column:step;not null;default:1"`
+	UpdatedAt    time.Time `gorm:"column:updated_at;autoUpdateTime:milli"`
+}
+
+func (OrderSequence) TableName() string { return "order_sequence" }