How CollectionProperty works for CustomType?

[kdby-io]

The docs says that when I use @CollectionProperty({ itemType: CustomType* }), CustomType must be @Model decorated. If I define like the below, what format is a A record stored as?

@Model()
class A {
  ...
  @CollectionProperty({ itemType: B })
  bs: B[];
}

@Model()
class B {
  @PartitionKey()
  pk: string;

  @SortKey()
  sk: string;
}

[simonmumenthaler]

Your PartitionKey/SortKey decorators in class B are useless in this example since it is nested in A.

When storing an A item the bs property will be mapped to a (L)ist attribute containing (M)ap attributes.

[kdby-io]

@simonmumenthaler you mean that B is not related with any table even if it is @model decorated.

Thank you :)