com.amazonaws.mobileconnectors.appsync.fetcher

Class AppSyncResponseFetchers

java.lang.Object

com.amazonaws.mobileconnectors.appsync.fetcher.AppSyncResponseFetchers

public final class AppSyncResponseFetchers
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static ResponseFetcher	CACHE_AND_NETWORK Signal the appsync client to fetch the data from both the network and the cache.
static ResponseFetcher	CACHE_FIRST Signals the appsync client to first fetch the data from the normalized cache.
static ResponseFetcher	CACHE_ONLY Signals the appsync client to only fetch the data from the normalized cache.
static ResponseFetcher	NETWORK_FIRST Signals the appsync client to first fetch the data from the network.
static ResponseFetcher	NETWORK_ONLY Signals the appsync client to only fetch the GraphQL data from the network.

Constructor Summary

Constructors

Constructor and Description
AppSyncResponseFetchers()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CACHE_ONLY

public static final ResponseFetcher CACHE_ONLY

Signals the appsync client to only fetch the data from the normalized cache. If it's not present in the normalized cache or if an exception occurs while trying to fetch it from the normalized cache, an empty Response is sent back with the Operation info wrapped inside.

NETWORK_ONLY

public static final ResponseFetcher NETWORK_ONLY

Signals the appsync client to only fetch the GraphQL data from the network. If network request fails, an exception is thrown.

CACHE_FIRST

public static final ResponseFetcher CACHE_FIRST

Signals the appsync client to first fetch the data from the normalized cache. If it's not present in the normalized cache or if an exception occurs while trying to fetch it from the normalized cache, then the data is instead fetched from the network.

NETWORK_FIRST

public static final ResponseFetcher NETWORK_FIRST

Signals the appsync client to first fetch the data from the network. If network request fails, then the data is fetched from the normalized cache. If the data is not present in the normalized cache, then the exception which led to the network request failure is rethrown.

CACHE_AND_NETWORK

public static final ResponseFetcher CACHE_AND_NETWORK

Signal the appsync client to fetch the data from both the network and the cache. If cached data is not present, only network data will be returned. If cached data is available, but network experiences an error, cached data is returned. If cache data is not available, and network data is not available, the error of the network request will be propagated. If both network and cache are available, both will be returned. Cache data is guaranteed to be returned first.

Constructor Detail

AppSyncResponseFetchers

public AppSyncResponseFetchers()