com.apollographql.apollo.cache.normalized

Class GraphQLStoreOperation<T>

java.lang.Object

com.apollographql.apollo.cache.normalized.GraphQLStoreOperation<T>

Type Parameters:

T - result type for this operation

public abstract class GraphQLStoreOperation<T>
extends java.lang.Object

Apollo store operation to be performed.

This class is a wrapper around operation to be performed on ApolloStore. Due to the fact that any operation can potentially include SQLite instruction, any operation on ApolloStore must be performed in background thread. Use enqueue(Callback) to schedule such operation in the dispatcher with a callback to get results.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	GraphQLStoreOperation.Callback<T> Operation result callback

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GraphQLStoreOperation(java.util.concurrent.Executor dispatcher)

Method Summary

Modifier and Type	Method and Description
static <T> GraphQLStoreOperation<T>	emptyOperation(T result)
void	enqueue(GraphQLStoreOperation.Callback<T> callback) Schedules operation to be executed in dispatcher
T	execute() Execute store operation
protected abstract T	perform()

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphQLStoreOperation

protected GraphQLStoreOperation(java.util.concurrent.Executor dispatcher)

Method Detail

emptyOperation

public static <T> GraphQLStoreOperation<T> emptyOperation(T result)

perform

protected abstract T perform()

execute

public final T execute()
                throws ApolloException

Execute store operation

NOTE: this is a sync operation, proceed with a caution as it may include SQLite instruction

Throws:

{@link - ApolloException} in case of any errors

ApolloException

enqueue

public void enqueue(@Nullable
                    GraphQLStoreOperation.Callback<T> callback)

Schedules operation to be executed in dispatcher

Parameters:

callback - to be notified about operation result