/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License 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.
*/
/*
* A Simple class to handle wrapping a response with another response
*/
package org.elasticsearch.action.support;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionResponse;
public abstract class DelegatingActionListener<Instigator extends ActionResponse, Delegated extends ActionResponse> implements ActionListener<Instigator> {
ActionListener<Delegated> delegatedActionListener;
protected DelegatingActionListener(final ActionListener<Delegated> listener) {
this.delegatedActionListener = listener;
}
protected abstract Delegated getDelegatedFromInstigator(Instigator response);
@Override
public final void onResponse(Instigator response) {
delegatedActionListener.onResponse(getDelegatedFromInstigator(response));
}
@Override
public final void onFailure(Throwable e) {
delegatedActionListener.onFailure(e);
}
}