Avaje - EBean - Partial Object Query disable Lazy Loading

Question

I\'m developing an app using Play! Framework 2.1.3, using EBean for the model layer I wanna be able to execute a Partial Object Query and not have the un-selected properties laz

Answer 1

I have solved this issue by using the standard JDBC interface using Statements and ResultSets on the queries that I require not to have lazy loading on.

As a side note, turns out that in the case of Scala, direct field access does not use Lazy Loading, but unfortunately it is not the language I am using for my application.

Answer 2

You have 2 alternatives.

Option 1) Use Ebean's built in JSON support that uses Jackson core under the hood. There are a number of writer options available from Ebean's JsonContext.

An example using PathProperties that is applied to both the query and the JSON.

PathProperties pathProperties =
        PathProperties.parse("(id,status,name,shippingAddress(id,line1,city),billingAddress(*),contacts(*))");

List<Customer> customers = Ebean.find(Customer.class)
    .apply(pathProperties)
    .findList();

String jsonString = Ebean.json().toJson(customers, pathProperties);

Option 2) is a newly available feature on version 6.2.2 where you can setDisableLazyLoading(true) on the query.

Reference: https://github.com/ebean-orm/avaje-ebeanorm/issues/360