/*
* Copyright 2015-2016 the original author or authors.
*
* 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 org.springframework.integration.file.remote.session;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* The default implementation of {@link SessionFactoryLocator} using a simple map lookup
* and an optional default to fall back on.
*
* @author Gary Russell
* @since 4.2
*
*/
public class DefaultSessionFactoryLocator<F> implements SessionFactoryLocator<F> {
private final Map<Object, SessionFactory<F>> factories = new ConcurrentHashMap<Object, SessionFactory<F>>();
private final SessionFactory<F> defaultFactory;
/**
* @param factories A map of factories, keyed by lookup key.
*/
public DefaultSessionFactoryLocator(Map<Object, SessionFactory<F>> factories) {
this(factories, null);
}
/**
* @param factories A map of factories, keyed by lookup key.
* @param defaultFactory A default to be used if the lookup fails.
*/
public DefaultSessionFactoryLocator(Map<Object, SessionFactory<F>> factories, SessionFactory<F> defaultFactory) {
this.factories.putAll(factories);
this.defaultFactory = defaultFactory;
}
/**
* Add a session factory.
* @param key the lookup key.
* @param factory the factory.
*/
public void addSessionFactory(String key, SessionFactory<F> factory) {
this.factories.put(key, factory);
}
/**
* Remove a session factory.
* @param key the lookup key.
* @return the factory, if it was present.
*/
public SessionFactory<F> removeSessionFactory(Object key) {
return this.factories.remove(key);
}
@Override
public SessionFactory<F> getSessionFactory(Object key) {
if (key == null) {
return this.defaultFactory;
}
SessionFactory<F> factory = this.factories.get(key);
return factory != null ? factory : this.defaultFactory;
}
}