feat: error translation support (#96)

Co-authored-by: Saeid Saeidee <[email protected]>

Author: saeidee

error_translator.go

@@ -0,0 +1,27 @@
+package sqlserver
+
+import (
+	"github.com/microsoft/go-mssqldb"
+
+	"gorm.io/gorm"
+)
+
+var errCodes = map[string]int32{
+	"uniqueConstraint": 2627,
+}
+
+type ErrMessage struct {
+	Number  int32  `json:"Number"`
+	Message string `json:"Message"`
+}
+
+// Translate it will translate the error to native gorm errors.
+func (dialector Dialector) Translate(err error) error {
+	if mssqlErr, ok := err.(*mssql.Error); ok {
+		if mssqlErr.Number == errCodes["uniqueConstraint"] {
+			return gorm.ErrDuplicatedKey
+		}
+	}
+
+	return err
+}

go.mod

@@ -7,5 +7,5 @@ require (
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/microsoft/go-mssqldb v0.21.0
 	golang.org/x/crypto v0.0.0-20221005025214-4161e89ecf1b // indirect
-	gorm.io/gorm v1.24.0
+	gorm.io/gorm v1.25.1
 )