// 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.event;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import com.saasovation.common.AssertionConcern;
import com.saasovation.common.domain.model.DomainEvent;
import com.saasovation.common.persistence.PersistenceManagerProvider;
public class MockEventStore extends AssertionConcern implements EventStore {
private static final long START_ID = 789;
private List<StoredEvent> storedEvents;
public MockEventStore(PersistenceManagerProvider aPersistenceManagerProvider) {
super();
this.assertArgumentNotNull(
aPersistenceManagerProvider,
"PersistenceManagerProvider is not valid; must not be null.");
// always start with at least 21 events
this.storedEvents = new ArrayList<StoredEvent>();
int numberOfStoredEvents =
Calendar
.getInstance()
.get(Calendar.MILLISECOND) + 1; // 1-1000
if (numberOfStoredEvents < 21) {
numberOfStoredEvents = 21;
}
for (int idx = 0; idx < numberOfStoredEvents; ++idx) {
StoredEvent storedEvent = this.newStoredEvent(START_ID + idx, idx + 1);
this.storedEvents.add(storedEvent);
}
}
@Override
public List<StoredEvent> allStoredEventsBetween(long aLowStoredEventId, long aHighStoredEventId) {
List<StoredEvent> events = new ArrayList<StoredEvent>();
for (StoredEvent storedEvent : this.storedEvents) {
if (storedEvent.eventId() >= aLowStoredEventId && storedEvent.eventId() <= aHighStoredEventId) {
events.add(storedEvent);
}
}
return events;
}
@Override
public List<StoredEvent> allStoredEventsSince(long aStoredEventId) {
return this.allStoredEventsBetween(aStoredEventId + 1, this.countStoredEvents());
}
@Override
public StoredEvent append(DomainEvent aDomainEvent) {
String eventSerialization =
EventSerializer.instance().serialize(aDomainEvent);
StoredEvent storedEvent =
new StoredEvent(
aDomainEvent.getClass().getName(),
aDomainEvent.occurredOn(),
eventSerialization);
storedEvent.setEventId(this.storedEvents.size() + 1);
this.storedEvents.add(storedEvent);
return storedEvent;
}
@Override
public void close() {
// no-op
}
@Override
public long countStoredEvents() {
return this.storedEvents.size();
}
private StoredEvent newStoredEvent(long domainEventId, long storedEventId) {
EventSerializer serializer = EventSerializer.instance();
DomainEvent event = new TestableDomainEvent(domainEventId, "name" + domainEventId);
String serializedEvent = serializer.serialize(event);
StoredEvent storedEvent = new StoredEvent(event.getClass().getName(), event.occurredOn(), serializedEvent);
storedEvent.setEventId(storedEventId);
return storedEvent;
}
}