refactor: openpitrix module

Signed-off-by: hongming <talonwan@yunify.com>

vendor/openpitrix.io/openpitrix/pkg/db/util.go

@@ -0,0 +1,31 @@
+// Copyright 2018 The OpenPitrix Authors. All rights reserved.
+// Use of this source code is governed by a Apache license
+// that can be found in the LICENSE file.
+
+package db
+
+import (
+	"github.com/fatih/structs"
+
+	"openpitrix.io/openpitrix/pkg/util/stringutil"
+)
+
+func GetColumnsFromStruct(s interface{}) []string {
+	names := structs.Names(s)
+	for i, name := range names {
+		names[i] = stringutil.CamelCaseToUnderscore(name)
+	}
+	return names
+}
+
+func GetColumnsFromStructWithPrefix(prefix string, s interface{}) []string {
+	names := structs.Names(s)
+	for i, name := range names {
+		names[i] = WithPrefix(prefix, stringutil.CamelCaseToUnderscore(name))
+	}
+	return names
+}
+
+func WithPrefix(prefix, str string) string {
+	return prefix + "." + str
+}