Using the client without apollo-runtime
apollo-runtime and ApolloClient provides support for doing the network requests and interacting with the cache but you can use the generated models and parsers without the runtime and use your network layer of choice for the HTTP calls.
For this, remove the com.apollographql.apollo3:apollo-runtimedependency and replace it with:
implementation("com.apollographql.apollo3:apollo-api:x.y.z")Composing an HTTP request body
To compose an HTTP POST request body to be sent to your server, use composeJsonRequest:
val jsonRequest = query.composeJsonRequest()
val mediaType = MediaType.parse("application/json");
/**
* jsonRequest contains data to be sent to the server
* {
* "query": ...
* "variables": ...
* "extensions": ...
* }
*/
val requestBody = RequestBody.create(mediaType, jsonRequest);Composing an HTTP response body
To compose a complete response that you can use during tests for an example, use composeJsonResponse with a programmatically built data:
/**
* responseSource will contain a json with data and possibly errors:
* {
* "data": ...
* "errors": ...
* "extensions": ...
* }
**/
val data = SomeQuery.Data(...)
val jsonResponse = operation.composeJsonResponse(data)
mockServer.enqueue(jsonResponse)Parsing an HTTP response body
To parse a network response into the type safe models, use parseJsonResponse:
/**
* responseSource should contain a json with data and possibly errors:
* {
* "data": ...
* "errors": ...
* "extensions": ...
* }
**/
val response = operation.parseJsonResponse(responseSource)
println(response.data)Converting a Query.Data model to/from JSON
Symmetrically to the composeJsonResponse and parseJsonResponse, there is composeJsonData and parseJsonData to convert to/from data without errors or extensions:
var data = SomeQuery.Data(...)
val jsonString = operation.composeJsonData(data);
// parse back to models, it will match the initial data
data = operation.parseJsonData(jsonString)