private void BuildCountryProjector()
{
var countryMapBuilder = new EventMapBuilder <CountryLookup, string, NHibernateProjectionContext>();
countryMapBuilder
.Map <CountryRegisteredEvent>()
.AsCreateOf(anEvent => anEvent.Code)
.Using((country, anEvent) => country.Name = anEvent.Name);
countryProjector = new NHibernateChildProjector <CountryLookup, string>(countryMapBuilder, (lookup, identity) => lookup.Id = identity)
{
// We use a local LRU cache for the countries to avoid unnecessary database lookups.
Cache = new LruProjectionCache <CountryLookup, string>(
20000, TimeSpan.FromSeconds(30), TimeSpan.FromMinutes(2), p => p.Id, () => DateTime.UtcNow)
};
}
public When_there_is_a_child_projector()
{
Given(() =>
{
Events.Map <ProductAddedToCatalogEvent>()
.AsCreateOf(anEvent => anEvent.ProductKey)
.Using((entry, anEvent) => entry.Category = anEvent.Category);
Events.Map <ProductAddedToCatalogEvent>().As((anEvent, context) =>
{
ProductCatalogChildEntry childEntry1 = context.Session.Get <ProductCatalogChildEntry>("c350E");
ProductCatalogChildEntry childEntry2 = context.Session.Get <ProductCatalogChildEntry>("c350F");
childProjectionStates.Add(new ChildProjectionState
{
Entry1Exists = childEntry1 != null,
Entry2Exists = childEntry2 != null
});
});
var childMapBuilder = new EventMapBuilder <ProductCatalogChildEntry, string, NHibernateProjectionContext>();
childMapBuilder.Map <ProductAddedToCatalogEvent>()
.AsCreateOf(anEvent => anEvent.ProductKey)
.Using((entry, anEvent) => entry.Category = anEvent.Category);
var childProjector = new NHibernateChildProjector <ProductCatalogChildEntry, string>(childMapBuilder);
StartProjecting(children: new INHibernateChildProjector[] { childProjector });
});
When(async() =>
{
var transaction1 = new Transaction
{
Events = new[]
{
new EventEnvelope
{
Body = new ProductAddedToCatalogEvent
{
ProductKey = "c350E",
Category = "Hybrid"
}
}
}
};
transaction2 = new Transaction
{
Events = new[]
{
new EventEnvelope
{
Body = new ProductAddedToCatalogEvent
{
ProductKey = "c350F",
Category = "Gas"
}
}
}
};
await The <MemoryEventSource>().Write(transaction1, transaction2);
});
}
