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* Licensed to the Apache Software Foundation (ASF) under one *
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* distributed with this work for additional information *
* regarding copyright ownership. The ASF 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 *
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package org.apache.james.mailbox.inmemory.user;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.james.mailbox.store.transaction.NonTransactionalMapper;
import org.apache.james.mailbox.store.user.SubscriptionMapper;
import org.apache.james.mailbox.store.user.model.Subscription;
public class InMemorySubscriptionMapper extends NonTransactionalMapper implements SubscriptionMapper {
private static final int INITIAL_SIZE = 64;
private final Map<String, List<Subscription>> subscriptionsByUser;
public InMemorySubscriptionMapper() {
subscriptionsByUser = new ConcurrentHashMap<String, List<Subscription>>(INITIAL_SIZE);
}
/**
* @see org.apache.james.mailbox.store.user.SubscriptionMapper#delete(org.apache.james.mailbox.store.user.model.Subscription)
*/
public synchronized void delete(Subscription subscription) {
final String user = subscription.getUser();
final List<Subscription> subscriptions = subscriptionsByUser.get(user);
if (subscriptions != null) {
subscriptions.remove(subscription);
}
}
/**
* @see org.apache.james.mailbox.store.user.SubscriptionMapper#findMailboxSubscriptionForUser(java.lang.String, java.lang.String)
*/
public Subscription findMailboxSubscriptionForUser(String user, String mailbox) {
final List<Subscription> subscriptions = subscriptionsByUser.get(user);
Subscription result = null;
if (subscriptions != null) {
for(Subscription subscription:subscriptions) {
if (subscription.getMailbox().equals(mailbox)) {
result = subscription;
break;
}
}
}
return result;
}
/**
* @see org.apache.james.mailbox.store.user.SubscriptionMapper#findSubscriptionsForUser(java.lang.String)
*/
@SuppressWarnings("unchecked")
public List<Subscription> findSubscriptionsForUser(String user) {
final List<Subscription> subcriptions = subscriptionsByUser.get(user);
final List<Subscription> results;
if (subcriptions == null) {
results = Collections.EMPTY_LIST;
} else {
// Make a copy to prevent concurrent modifications
results = new ArrayList<Subscription>(subcriptions);
}
return results;
}
/**
* @see org.apache.james.mailbox.store.user.SubscriptionMapper#save(org.apache.james.mailbox.store.user.model.Subscription)
*/
public synchronized void save(Subscription subscription) {
final String user = subscription.getUser();
final List<Subscription> subscriptions = subscriptionsByUser.get(user);
if (subscriptions == null) {
final List<Subscription> newSubscriptions = new ArrayList<Subscription>();
newSubscriptions.add(subscription);
subscriptionsByUser.put(user, newSubscriptions);
} else {
subscriptions.add(subscription);
}
}
public void deleteAll() {
subscriptionsByUser.clear();
}
/**
* Do nothing
*/
public void endRequest() {
// nothing todo
}
}