From 19662e54a91442dbe8ce9e2cb3738fd06bf84564 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Pfeuffer?= <rene.pfeuffer@cloudogu.com>
Date: Thu, 30 Apr 2020 08:55:27 +0200
Subject: [PATCH] Add class to manually validate rest data transfer

It may be necessary to validate objects annotated wit javax validation
tags, that could not be validated using the internal resteasy validation
mechanism, eg. objects created manually. This new class makes this
possible by simply calling validate(dto).
---
 CHANGELOG.md                                  |  1 +
 .../java/sonia/scm/web/api/DtoValidator.java  | 43 +++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 scm-core/src/main/java/sonia/scm/web/api/DtoValidator.java

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 568ad27285..41303ce101 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Add iconStyle + onClick option and story shot for icon component ([#1100](https://github.com/scm-manager/scm-manager/pull/1100))
 - Making WebElements (Servlet or Filter) optional by using the `@Requires` annotation ([#1101](https://github.com/scm-manager/scm-manager/pull/1101))
+- Add class to manually validate rest data transfer objects with javax validation annotations ([#1114](https://github.com/scm-manager/scm-manager/pull/1114))
 
 ### Changed
 - Removed the `requires` attribute on the `@Extension` annotation and instead create a new `@Requires` annotation ([#1097](https://github.com/scm-manager/scm-manager/pull/1097))
diff --git a/scm-core/src/main/java/sonia/scm/web/api/DtoValidator.java b/scm-core/src/main/java/sonia/scm/web/api/DtoValidator.java
new file mode 100644
index 0000000000..9ac5d3ad16
--- /dev/null
+++ b/scm-core/src/main/java/sonia/scm/web/api/DtoValidator.java
@@ -0,0 +1,43 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.web.api;
+
+import javax.validation.ConstraintViolation;
+import javax.validation.ConstraintViolationException;
+import javax.validation.Validation;
+import javax.validation.Validator;
+import javax.validation.ValidatorFactory;
+import java.util.Set;
+
+public class DtoValidator {
+  void validate(Object configuration) {
+    ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
+    Validator validator = factory.getValidator();
+    Set<ConstraintViolation<Object>> violations = validator.validate(configuration);
+    if (!violations.isEmpty()) {
+      throw new ConstraintViolationException(violations);
+    }
+  }
+}