Map jaxb violation exceptions instead of reaseasy

ResteasyViolationException implements jaxb's
ConstraintViolationException.

scm-webapp/src/main/java/sonia/scm/api/v2/JavaxValidationExceptionMapper.java

@@ -0,0 +1,54 @@
+/*
+ * 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.api.v2;
+
+import sonia.scm.api.v2.resources.ResteasyViolationExceptionToErrorDtoMapper;
+import sonia.scm.web.VndMediaType;
+
+import javax.inject.Inject;
+import javax.validation.ConstraintViolationException;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+@Provider
+public class JavaxValidationExceptionMapper implements ExceptionMapper<ConstraintViolationException> {
+
+  private final ResteasyViolationExceptionToErrorDtoMapper mapper;
+
+  @Inject
+  public JavaxValidationExceptionMapper(ResteasyViolationExceptionToErrorDtoMapper mapper) {
+    this.mapper = mapper;
+  }
+
+  @Override
+  public Response toResponse(ConstraintViolationException exception) {
+    return Response
+      .status(Response.Status.BAD_REQUEST)
+      .type(VndMediaType.ERROR_TYPE)
+      .entity(mapper.map(exception))
+      .build();
+  }
+}