Auto validate jsonconverter objects

sechub-commons-model/src/main/java/com/mercedesbenz/sechub/commons/model/JSONConverter.java

@@ -70,9 +70,19 @@ public <T> T fromJSON(Class<T> clazz, String json) throws JSONConverterException
         }
         try {
             byte[] bytes = string.getBytes();
-            return mapper.readValue(bytes, clazz);
+            T result = mapper.readValue(bytes, clazz);
+
+            // Validate the object if it implements JSONValidatable
+            if (result instanceof JSONValidatable) {
+                try {
+                    ((JSONValidatable) result).validate();
+                } catch (JSONValidationException e) {
+                    throw new JSONConverterException("Validation failed for " + clazz.getSimpleName(), e);
+                }
+            }
+
+            return result;
         } catch (IOException e) {
-
             LOG.debug("JSON conversion failed, origin JSON:\n{}", json);
             /*
              * we truncate json - because when JSON to big it could flood logs - debugging

sechub-commons-model/src/main/java/com/mercedesbenz/sechub/commons/model/JSONValidatable.java

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: MIT
+package com.mercedesbenz.sechub.commons.model;
+
+/**
+ * Interface for objects that can validate themselves after JSON deserialization
+ */
+public interface JSONValidatable {
+    /**
+     * Validates the object's state after deserialization
+     * @throws JSONValidationException if validation fails
+     */
+    void validate() throws JSONValidationException;
+}

sechub-commons-model/src/main/java/com/mercedesbenz/sechub/commons/model/JSONValidationException.java

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MIT
+package com.mercedesbenz.sechub.commons.model;
+
+/**
+ * Exception thrown when JSON validation fails
+ */
+public class JSONValidationException extends SecHubRuntimeException {
+
+    private static final long serialVersionUID = 1L;
+
+    public JSONValidationException(String message) {
+        super(message);
+    }
+
+    public JSONValidationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}