Validate import payload and return create/update stats

- Add validation to /import payload
- Move import logic to service bean
- Track whether entities have been created or update
- Report number of created and updated entities as return value for the
  import endpoint
- Add some test coverage to exercise the validators

1 files changed, 2 insertions, 0 deletions

diff --git a/src/main/java/com/stileeducation/markr/dto/MCQTestResultsDTO.java b/src/main/java/com/stileeducation/markr/dto/MCQTestResultsDTO.java
index e9ee8a7..fb77125 100644
--- a/src/main/java/com/stileeducation/markr/dto/MCQTestResultsDTO.java
+++ b/src/main/java/com/stileeducation/markr/dto/MCQTestResultsDTO.java
@@ -1,5 +1,6 @@
 package com.stileeducation.markr.dto;
 
+import jakarta.validation.Valid;
 import jakarta.xml.bind.annotation.XmlElement;
 import jakarta.xml.bind.annotation.XmlRootElement;
 
@@ -9,6 +10,7 @@ import java.util.Objects;
 @XmlRootElement(name = "mcq-test-results")
 public class MCQTestResultsDTO {
 
+  @Valid
   private List<MCQTestResultDTO> mcqTestResults;
 
   @XmlElement(name = "mcq-test-result")