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CassandraEventStore.java
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CassandraEventStore.java
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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.james.eventsourcing.cassandra;
import java.util.List;
import javax.inject.Inject;
import org.apache.james.eventsourcing.AggregateId;
import org.apache.james.eventsourcing.Event;
import org.apache.james.eventsourcing.EventStore;
import com.google.common.base.Preconditions;
public class CassandraEventStore implements EventStore {
private final EventStoreDao eventStoreDao;
@Inject
public CassandraEventStore(EventStoreDao eventStoreDao) {
this.eventStoreDao = eventStoreDao;
}
@Override
public void appendAll(List<Event> events) {
if (events.isEmpty()) {
return;
}
doAppendAll(events);
}
public void doAppendAll(List<Event> events) {
Preconditions.checkArgument(Event.belongsToSameAggregate(events));
boolean success = eventStoreDao.appendAll(events).join();
if (!success) {
throw new EventStoreFailedException();
}
}
@Override
public History getEventsOfAggregate(AggregateId aggregateId) {
return eventStoreDao.getEventsOfAggregate(aggregateId);
}
}