// Copyright 2012,2013 Vaughn Vernon
//
// 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.saasovation.common.port.adapter.persistence.hibernate;
import java.util.List;
import org.hibernate.Query;
import com.saasovation.common.domain.model.DomainEvent;
import com.saasovation.common.event.EventSerializer;
import com.saasovation.common.event.EventStore;
import com.saasovation.common.event.StoredEvent;
import com.saasovation.common.persistence.PersistenceManagerProvider;
public class HibernateEventStore
extends AbstractHibernateSession
implements EventStore {
public HibernateEventStore(PersistenceManagerProvider aPersistenceManagerProvider) {
this();
if (!aPersistenceManagerProvider.hasHibernateSession()) {
throw new IllegalArgumentException("The PersistenceManagerProvider must have a Hibernate Session.");
}
this.setSession(aPersistenceManagerProvider.hibernateSession());
}
public HibernateEventStore() {
super();
}
@Override
@SuppressWarnings("unchecked")
public List<StoredEvent> allStoredEventsBetween(long aLowStoredEventId, long aHighStoredEventId) {
Query query =
this.session().createQuery(
"from StoredEvent as _obj_ "
+ "where _obj_.eventId between ? and ? "
+ "order by _obj_.eventId");
query.setParameter(0, aLowStoredEventId);
query.setParameter(1, aHighStoredEventId);
List<StoredEvent> storedEvents = query.list();
return storedEvents;
}
@Override
@SuppressWarnings("unchecked")
public List<StoredEvent> allStoredEventsSince(long aStoredEventId) {
Query query =
this.session().createQuery(
"from StoredEvent as _obj_ "
+ "where _obj_.eventId > ? "
+ "order by _obj_.eventId");
query.setParameter(0, aStoredEventId);
List<StoredEvent> storedEvents = query.list();
return storedEvents;
}
@Override
public StoredEvent append(DomainEvent aDomainEvent) {
String eventSerialization =
EventSerializer.instance().serialize(aDomainEvent);
StoredEvent storedEvent =
new StoredEvent(
aDomainEvent.getClass().getName(),
aDomainEvent.occurredOn(),
eventSerialization);
this.session().save(storedEvent);
return storedEvent;
}
@Override
public void close() {
// no-op
}
@Override
public long countStoredEvents() {
Query query =
this.session().createQuery("select count(*) from StoredEvent");
long count = ((Long) query.uniqueResult()).longValue();
return count;
}
}