wip

sqlgen/sqlite.go.tmpl

@@ -48,27 +48,29 @@ func {{.Type}}_Insert(
 func {{.Type}}_Update(
 	tx TX,
 	row *{{.Type}},
-) (found bool, err error) {
+) (err error) {
   {{.Type}}_Sanitize(row)
   if err = {{.Type}}_Validate(row); err != nil {
-    return false, err
+    return err
   }
 
 	result, err := tx.Exec("{{.UpdateQuery}}", {{.UpdateArgs}})
 	if err != nil {
-		return false, err
+		return err
 	}
 
 	n, err := result.RowsAffected()
 	if err != nil {
 		panic(err)
 	}
-
+	switch n {
-	if n > 1 {
+	case 0:
+		return sql.ErrNoRows
+	case 1:
+		return nil
+	default:
 		panic("multiple rows updated")
 	}
-
-	return n != 0, nil
 }
 {{- end}}
 
@@ -77,27 +79,29 @@ func {{.Type}}_Update(
 func {{.Type}}_UpdateFull(
 	tx TX,
 	row *{{.Type}},
-) (found bool, err error) {
+) (err error) {
   {{.Type}}_Sanitize(row)
   if err = {{.Type}}_Validate(row); err != nil {
-    return false, err
+    return err
   }
 
 	result, err := tx.Exec("{{.UpdateFullQuery}}", {{.UpdateFullArgs}})
 	if err != nil {
-		return false, err
+		return err
 	}
 
 	n, err := result.RowsAffected()
 	if err != nil {
 		panic(err)
 	}
-
+	switch n {
-	if n > 1 {
+		case 0:
+		return sql.ErrNoRows
+	case 1:
+		return nil
+	default:
 		panic("multiple rows updated")
 	}
-
-	return n != 0, nil
 }
 {{- end}}
 
@@ -109,22 +113,24 @@ func {{.Type}}_UpdateFull(
 func {{.Type}}_Delete(
 	tx TX,
 	{{.PKFunctionArgs -}}
-) (found bool, err error) {
+) (err error) {
 	result, err := tx.Exec("{{.DeleteQuery}}", {{.DeleteArgs}})
-		if err != nil {
+	if err != nil {
-		return false, err
+		return err
 	}
 
 	n, err := result.RowsAffected()
 	if err != nil {
 		panic(err)
 	}
-
+	switch n {
-	if n > 1 {
+		case 0:
+		return sql.ErrNoRows
+	case 1:
+		return nil
+	default:
 		panic("multiple rows deleted")
 	}
-
-	return n != 0, nil
 }
 
 {{- end}}

sqliteutil/errors.go

@@ -2,7 +2,7 @@ package sqliteutil
 
 import "github.com/mattn/go-sqlite3"
 
-func ErrIsDuplicate(err error) bool {
+func ErrIsConstraint(err error) bool {
 	e, ok := err.(sqlite3.Error)
 	return ok && e.Code == 19
 }