How to fetch entities multiple levels deep with Hibernate?
We get a List of Leaf objects, but each Leaf fetched also the Branch, which fetched the Tree and then the Forest too. Unfortunately, Hibernate can’t magically create the up-down hierarchy from a query result like this. Trying to access the bags with:
Which is an example of include multiple levels?
For example, Customer contains a list of invoices and each invoice then contains a list of items. The Include () method allows the required depth of eager loading to be specified by providing Select expressions to the appropriate depth.
How to include multiple levels in C # Entity Framework?
However, ApplicationsWithOverrideGroup is another container that holds other complex objects. Can I do an Include () on that property as well? Or how can I get that property to fully load? Will populate only the Enabled property (below) and not the Application or CustomVariableGroup properties (below). How do I make this happen?
How to query for more than one level of child records?
One thing we can do, is deserialize JSON into SObjects. And that deserialization process will work with more than 1 level of child relationships included in your JSON. So by serializing the objects in the hierarchy and using them like building blocks to create some new JSON representing things in the way we’d like them, we can solve our problem.
How to retrieve a collection of related records?
If you want to retrieve the collection separately, you can use the value of the @odata.nextLink property with a new GET request to return the required data. The following example retrieves the tasks assigned to the top 2 account records. One has related tasks, the other does not.
How to limit the number of related records?
You can limit the properties returned for related records using the $select system query option in parentheses after the navigation property name. Use this for both single-valued and collection-valued navigation properties. You are limited to no more than 10 $expand options in a query.