Include resteasy javaee 7 validation with hibernate

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

@@ -0,0 +1,58 @@
+package sonia.scm.api.v2;
+
+import lombok.Getter;
+import org.jboss.resteasy.api.validation.ResteasyViolationException;
+
+import javax.validation.ConstraintViolation;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlElementWrapper;
+import javax.xml.bind.annotation.XmlRootElement;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Provider
+public class ValidationExceptionMapper implements ExceptionMapper<ResteasyViolationException> {
+
+  @Override
+  public Response toResponse(ResteasyViolationException exception) {
+
+    List<ConstraintViolationBean> violations =
+      exception.getConstraintViolations()
+        .stream()
+        .map(ConstraintViolationBean::new)
+        .collect(Collectors.toList());
+
+    return Response
+      .status(Response.Status.BAD_REQUEST)
+      .type(MediaType.APPLICATION_JSON_TYPE)
+      .entity(new ValidationError(violations))
+      .build();
+  }
+
+  @Getter
+  public static class ValidationError {
+    @XmlElement(name = "violation")
+    @XmlElementWrapper(name = "violations")
+    private List<ConstraintViolationBean> violoations;
+
+    public ValidationError(List<ConstraintViolationBean> violoations) {
+      this.violoations = violoations;
+    }
+  }
+
+  @XmlRootElement(name = "violation")
+  @Getter
+  public static class ConstraintViolationBean {
+    private String path;
+    private String message;
+
+    public ConstraintViolationBean(ConstraintViolation<?> violation) {
+      message = violation.getMessage();
+      path = violation.getPropertyPath().toString();
+    }
+  }
+}