io.vertx.ext.web.handler.graphql

Class VertxMappedBatchLoader<K,V>

java.lang.Object

io.vertx.ext.web.handler.graphql.VertxMappedBatchLoader<K,V>

All Implemented Interfaces:

org.dataloader.MappedBatchLoaderWithContext<K,V>

public class VertxMappedBatchLoader<K,V>
extends Object
implements org.dataloader.MappedBatchLoaderWithContext<K,V>

A MappedBatchLoaderWithContext that works well with Vert.x callback-based APIs.

Author:

Craig Day

Constructor Summary

Constructors

Constructor and Description
VertxMappedBatchLoader(TriConsumer<Set<K>,org.dataloader.BatchLoaderEnvironment,Promise<Map<K,V>>> batchLoader) Create a new batch loader.

Method Summary

Modifier and Type	Method and Description
CompletionStage<Map<K,V>>	load(Set<K> keys, org.dataloader.BatchLoaderEnvironment environment)

Methods inherited from class java.lang.Object

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

Constructor Detail

VertxMappedBatchLoader

public VertxMappedBatchLoader(TriConsumer<Set<K>,org.dataloader.BatchLoaderEnvironment,Promise<Map<K,V>>> batchLoader)

Create a new batch loader. The provided function will be invoked with the following arguments:

• the keys for the data objects that should be loaded
• the BatchLoaderEnvironment
• a future that the implementor must complete after the data objects are loaded

Method Detail

load

public CompletionStage<Map<K,V>> load(Set<K> keys,
                                      org.dataloader.BatchLoaderEnvironment environment)

Specified by:

load in interface org.dataloader.MappedBatchLoaderWithContext<K,V>