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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
* under the License.
*
*/
package org.apache.qpid.server.store;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.apache.qpid.server.configuration.IllegalConfigurationException;
import org.apache.qpid.server.plugin.QpidServiceLoader;
public class MessageStoreCreator
{
private Map<String, MessageStoreFactory> _factories = new HashMap<String, MessageStoreFactory>();
public MessageStoreCreator()
{
QpidServiceLoader<MessageStoreFactory> qpidServiceLoader = new QpidServiceLoader<MessageStoreFactory>();
Iterable<MessageStoreFactory> factories = qpidServiceLoader.atLeastOneInstanceOf(MessageStoreFactory.class);
for (MessageStoreFactory messageStoreFactory : factories)
{
String type = messageStoreFactory.getType();
MessageStoreFactory factory = _factories.put(type.toLowerCase(), messageStoreFactory);
if (factory != null)
{
throw new IllegalStateException("MessageStoreFactory with type name '" + type
+ "' is already registered using class '" + factory.getClass().getName() + "', can not register class '"
+ messageStoreFactory.getClass().getName() + "'");
}
}
}
public MessageStore createMessageStore(String storeType)
{
MessageStoreFactory factory = _factories.get(storeType.toLowerCase());
if (factory == null)
{
throw new IllegalConfigurationException("Unknown store type: " + storeType);
}
return factory.createMessageStore();
}
public Collection<MessageStoreFactory> getFactories()
{
return Collections.unmodifiableCollection(_factories.values());
}
}
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