/*
* Copyright 2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.sqs.buffered;
import com.amazonaws.AmazonWebServiceRequest;
import com.amazonaws.handlers.AsyncHandler;
/**
* This class combines the handler we are supposed to call after the request is
* completed and the original request object. The reason to hold on to the
* original request is that we have to provide it to the async handler on
* successful completion. Storing the request object here means we don't have to
* store it in the classes that do actual work. Those classes tend to forget
* about the request objects as soon as the required data was extracted from
* them.
*/
class QueueBufferCallback<RequestType extends AmazonWebServiceRequest, ResultType> {
private final AsyncHandler<RequestType, ResultType> handler;
private final RequestType request;
public QueueBufferCallback(
AsyncHandler<RequestType, ResultType> paramHandler,
RequestType request) {
this.handler = paramHandler;
this.request = request;
}
public void onError(Exception e) {
if (null != handler)
handler.onError(e);
}
public void onSuccess(ResultType result) {
if (null != handler)
handler.onSuccess(request, result);
}
}