/*
* Copyright 2014, Simon Matić Langford
* Copyright 2014, The Sporting Exchange Limited
*
* Licensed 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.
*/
package com.betfair.cougar.transport.api;
import java.util.HashSet;
import java.util.Set;
/**
* Handy base class for resolvers which handle only a single component.
*/
public abstract class SingleComponentResolver<Transport,Body> implements DehydratedExecutionContextResolver<Transport,Body> {
private final DehydratedExecutionContextComponent component;
protected SingleComponentResolver(DehydratedExecutionContextComponent component) {
this.component = component;
}
@Override
public void resolving(Set<DehydratedExecutionContextComponent> handling) {
if (handling.size() > 1 || (handling.size() == 1 && !handling.contains(component))) {
Set<DehydratedExecutionContextComponent> cantHandle = new HashSet<>(handling);
cantHandle.remove(component);
throw new IllegalArgumentException("I don't know how to handle: "+cantHandle);
}
}
@Override
public DehydratedExecutionContextComponent[] supportedComponents() {
return new DehydratedExecutionContextComponent[] { component };
}
}