CUBA Platform. Developer's Manual
4.5.3.1. Creating Datasources

If you need to create a data source in the Java code, it is recommended to use a special class, DsBuilder.

The DsBuilder instance is parameterized by an invocation chain of its methods in the fluent interface style. If the master and property parameters are set, then NestedDatasource will be created, otherwise – Datasource or CollectionDatasource.

Example:

CollectionDatasource ds = new DsBuilder(getDsContext())
        .setJavaClass(Order.class)
        .setViewName(View.LOCAL)
        .setId("ordersDs")
        .buildCollectionDatasource();