To-One Relations: __boxStore field missing

[MjCodeTinker]

When I use The To - One Relations

For example:

@entity
public class Order {
@id long id;

long customerId;

@Relation Customer customer;

/** Used to resolve relations */
@Internal
@Generated(hash = 1307364262)
transient BoxStore __boxStore;

@Generated(hash = 789963847)
public Order(long id, long customerId) {
    this.id = id;
    this.customerId = customerId;
}

@Generated(hash = 1105174599)
public Order() {

}

...
...

}

@entity
public class Customer {

@Id long id;
...

}

When I call in the activity and setCustom () will throw an exception

    Customer customer=new Customer(0,"test");
    Order order=new Order(0,0);
    order.setCustomerId(0);
    order.setCustomer(customer);   // This code

    orderBox.put(order);

java.lang.IllegalStateException: java.lang.NoSuchFieldException: __boxStore

at io.objectbox.internal.ReflectionCache.getField(ReflectionCache.java:31)

at io.objectbox.relation.ToOne.ensureBoxes(ToOne.java:73)

at io.objectbox.relation.ToOne.setTarget(ToOne.java:126)

at com.mj.rx.practice.no_sql.Order.setCustomer(Order.java:80)

[greenrobot]

Will investigate later, but try to put the customer before putting the order for now.

[MjCodeTinker]

    Customer customer=new Customer(0,"test");
    Order order=new Order(0,0);
    orderBox.put(order);
    order.setCustomerId(0);
    order.setCustomer(customer);  

I put the first Order after put the Custom, so won't appear abnormal, but the query in the Order of the Custom is empty.

Can you help me write the Custom code is put in the Order right?

[greenrobot]

Try this:

Customer customer=new Customer(0,"test");
customerBox.put(customer); // Now customer has an ID
Order order=new Order(0,0);
order.setCustomerId(customer.getId());
orderBox.put(order);  

[MjCodeTinker]

In this way before I tried just now and try out the query the Custom is still empty

Customer customer=new Customer(0,"test");
customerBox.put(customer); 
Order order=new Order(0,0);
order.setCustomerId(customer.getId());
orderBox.put(order);  

The query code

List<Order> listOrder= orderBox.getAll();

listOrder.toString();

The Order inside the Custom is null

[greenrobot]

Where you able to resolve this meanwhile? Because __boxStore is available in the posted code, maybe its a Proguard issue? To verify, could you check if the minification is enabled in your setup?

[greenrobot]

No response, also newer versions should have improved relations. Also, we will switch to a new build process (use the one we use for Kotlin) completely. Let us know if issues still prevail. Thanks!