Invalid class type on nested object - MappingCouchbaseConverter - couchbase transactions

Transaction conversion on read, according to the documentation, should work with this code :

TransactionGetResult getResult = ctx.get(couchbaseClientFactory.getDefaultCollection(), "doc-id");

CouchbaseDocument source = new CouchbaseDocument(getResult.id());
source.setContent(getResult.contentAsObject());
Menu menu = mappingCouchbaseConverter.read(Menu.class, source);

When entity contains a list of nested objects then nested field has incorrect type (ArrayList<HashMap>) and app crashes with ‘java.lang.ClassCastException: class java.util.HashMap cannot be cast to class com.example.MenuCategory’.

MenuCategory category = menu.getCategories().get(0); // ClassCastException

Document in DB:

{
  "_class": "com.example.Menu",
  "categories": [
    {
      "id": "category_1",
      "products": [
        {
          "id": "product_1"
        },
        {
          "id": "product_2"
        }
      ]
    }
  ],
  "name": "Menu 1"
}

com.example.Menu:

@Document
public class Menu {

    public static final String PREFIX = "menu";

    @IdPrefix
    private final String prefix = PREFIX;

    @Id
    @GeneratedValue(strategy = GenerationStrategy.UNIQUE, delimiter = ID_DELIMITER)
    private String id;

    @Field
    private String name;

    @Field
    private List<MenuCategory> categories;

    // getters / setters
}

com.example.MenuCategory:

public class MenuCategory {

    private String id;

    private List<CategoryProduct> products;

    // getters / setters

    public static class CategoryProduct {

        private String id;

        public CategoryProduct() {
        }

        public CategoryProduct(String id) {
            this.id = id;
        }

        // getters / setters
    }
}

[mikereiche]

I’ll keep this open for further investigation as to why the documentation doesn’t match - but the following will work.

Menu m = couchbaseTemplate.support().decodeEntity(getResult.id(), new String(getResult.contentAsBytes()), getResult.cas(), Menu.class);
MenuCategory mc = m.getCategories().get(0);
System.err.println(m);

[mikereiche]

I realize this was first, but please refer to #1312 as it has more information on it. I’ll make this the ‘duplicate’.