Duplicate object types in Apollo GraphQL for Android

Question

On my project GraphQL schema the object AllowedPeriod (it's just two fields startsAt/endsAt) can arrive inside different objects of the graph.

When generating queries, apollo is creating a new type for every <parent_object>.AllowedPeriod

For example, in the GetDevicesQuery, the AllowedPeriod can be inside devices, actions or group, hence generating the following classes.

• GetDevicesQuery.AllowedPeriod
• GetDevicesQuery.AllowedPeriod1
• GetDevicesQuery.AllowedPeriod2

Is there a way to tell apollo that those are the same types and that it should not generate types for every one of them?

Answer 1

I think you can use graphQL fragments to solve your issue. Apollo should generate the same fragment class for each of your queries.

For example:

fragment AllowedPeriodFragment on AllowedPeriod {
    startsAt
    endsAt
}

query GetDevicesQuery() {
    devices {
        allowedPeriod { 
            ...AllowedPeriodFragment 
        }
    }

    actions {
        allowedPeriod { 
            ...AllowedPeriodFragment 
        }
    }
}

The generated fragment can be accessed through the fragments() method.

It should look something like: device.fragments().allowedPeriodFragment() or action.fragments().allowedPeriodFragment()