private void InferProjectionType(ProjectionCollection projections, object instance)
{
var type = instance.GetType().GetTypeInfo();
if (instance is IProjection projection)
{
projections.Add(projection);
}
else if (type.GetInterfaces()
.Any(
z => z.GetTypeInfo().IsGenericType&&
z.GetTypeInfo().GetGenericTypeDefinition() == typeof(ITransform <,>)
))
{
foreach (var @interface in type.GetInterfaces()
.Where(
z => z.GetTypeInfo().IsGenericType&&
z.GetTypeInfo().GetGenericTypeDefinition() == typeof(ITransform <,>)
))
{
var tEvent = @interface.GetGenericArguments()[0];
var tView = @interface.GetGenericArguments()[1];
AddTransformMethod.MakeGenericMethod(tEvent, tView).Invoke(null, new[] { projections, instance });
}
}
else
{
throw new NotSupportedException(
$"The project instance of type '{type.FullName}' is not a supported projection or transform."
);
}
}
public Treenode(Type nodetype, Treenode father, Treenode oper1, Treenode oper2, CompositeCondition cCondition, ProjectionCollection projCollection)
{
NodeType = nodetype;
Parent = father;
Operand1 = oper1;
Operand2 = oper2;
Condition = cCondition;
ProjectionColl = projCollection;
IntData = new IntermediateData(0, 0, 0, 0);
}
public static void pushDown(List<ConditionElement> elements, Treenode node)
{
if (node.NodeType == Treenode.Type.proj)
{
ProjectionCollection pcollection = node.ProjectionColl;
foreach (ProjectionElement pelement in pcollection)
elements.Add(new ConditionElement(pelement.RelationName + '.' + pelement.Attribute));
}
else if (node.NodeType == Treenode.Type.join)
{
AtomicCondition atcond = node.Condition[0];
elements.Add(atcond.Attribute1);
elements.Add(atcond.Attribute2);
}
else if (node.NodeType == Treenode.Type.relation)
{
string relName = node.RelationName;
ProjectionCollection pcollection = new ProjectionCollection();
foreach (ConditionElement celement in elements)
if (relName.Equals(celement.RelationName))
pcollection.Add(new ProjectionElement(celement.RelationName, celement.Attribute));
Treenode newproj = new Treenode(Treenode.Type.proj, node.Parent, node, null, null, pcollection);
if (node.Parent.NodeType == Treenode.Type.sel)
{
if (node.Parent.Parent.Operand1 == node.Parent)
node.Parent.Parent.Operand1 = newproj;
else if (node.Parent.Parent.Operand2 == node.Parent)
node.Parent.Parent.Operand2 = newproj;
node.Parent.Parent = newproj;
newproj.Operand1 = node.Parent;
}
else
{
if (node.Parent.Operand1 == node)
node.Parent.Operand1 = newproj;
else if (node.Parent.Operand2 == node)
node.Parent.Operand2 = newproj;
node.Parent = newproj;
newproj.Operand1 = node;
}
}
if (node.Operand1 != null)
pushDown(elements, node.Operand1);
if (node.Operand2 != null)
pushDown(elements, node.Operand2);
}
private void InferProjectionType(ProjectionCollection projections, Type type)
{
if (typeof(IProjection).IsAssignableFrom(type))
{
try
{
projections.Add((IProjection)Activator.CreateInstance(type) !);
}
catch (Exception e)
{
throw new InvalidOperationException(
$"Could not create an instance of '{type.FullName}'. If you need to register it through Dependency Injection use the IInlineProjection or IAsyncProjection interfaces.",
e
);
}
}
else if (type.GetInterfaces()
.Any(
z => z.GetTypeInfo().IsGenericType&&
z.GetTypeInfo().GetGenericTypeDefinition() == typeof(ITransform <,>)
))
{
object instance;
try
{
instance = Activator.CreateInstance(type) !;
}
catch (Exception e)
{
throw new InvalidOperationException(
$"Could not create an instance of '{type.FullName}'. If you need to register it through Dependency Injection use the IInlineProjection or IAsyncProjection interfaces.",
e
);
}
foreach (var @interface in type.GetInterfaces()
.Where(
z => z.GetTypeInfo().IsGenericType&&
z.GetTypeInfo().GetGenericTypeDefinition() == typeof(ITransform <,>)
))
{
var tEvent = @interface.GetGenericArguments()[0];
var tView = @interface.GetGenericArguments()[1];
AddTransformMethod.MakeGenericMethod(tEvent, tView).Invoke(null, new[] { projections, instance });
}
}
else
{
AddAggregateMethod.MakeGenericMethod(type).Invoke(null, new object[] { projections });
}
}
public EventGraph(StoreOptions options)
{
Options = options;
_aggregatorLookup = new AggregatorLookup();
_events.OnMissing = eventType =>
{
var mapping = typeof(EventMapping <>).CloseAndBuildAs <EventMapping>(this, eventType);
Options.Storage.AddMapping(mapping);
return(mapping);
};
_byEventName.OnMissing = name => { return(AllEvents().FirstOrDefault(x => x.EventTypeName == name)); };
InlineProjections = new ProjectionCollection(options);
AsyncProjections = new ProjectionCollection(options);
}
public EventGraph(StoreOptions options)
{
Options = options;
_events.OnMissing = eventType =>
{
var mapping = typeof(EventMapping <>).CloseAndBuildAs <EventMapping>(this, eventType);
Options.AddMapping(mapping);
return(mapping);
};
_byEventName.OnMissing = name => { return(AllEvents().FirstOrDefault(x => x.EventTypeName == name)); };
SchemaObjects = new EventStoreDatabaseObjects(this);
InlineProjections = new ProjectionCollection(options);
AsyncProjections = new ProjectionCollection(options);
}
public EventGraph(StoreOptions options)
{
Options = options;
_events.OnMissing = eventType =>
{
var mapping = typeof(EventMapping <>).CloseAndBuildAs <EventMapping>(this, eventType);
Options.Storage.AddMapping(mapping);
return(mapping);
};
_byEventName.OnMissing = name => { return(AllEvents().FirstOrDefault(x => x.EventTypeName == name)); };
_inlineProjections = new Lazy <IProjection[]>(() => Projections.BuildInlineProjections(_store));
_establishTombstone = new Lazy <EstablishTombstoneStream>(() => new EstablishTombstoneStream(this));
Projections = new ProjectionCollection(options);
_aggregateTypeByName = new Cache <string, Type>(name => findAggregateType(name));
}
public EventGraph(StoreOptions options)
{
Options = options;
_aggregatorLookup = new AggregatorLookup();
_events.OnMissing = eventType =>
{
var mapping = typeof(EventMapping <>).CloseAndBuildAs <EventMapping>(this, eventType);
Options.Storage.AddMapping(mapping);
return(mapping);
};
_byEventName.OnMissing = name => { return(AllEvents().FirstOrDefault(x => x.EventTypeName == name)); };
InlineProjections = new ProjectionCollection(options);
AsyncProjections = new ProjectionCollection(options);
// TODO -- this will change when we switch all the way over to the new V4 model
_inlineProjections = new Lazy <IInlineProjection[]>(() => InlineProjections.Select(x => new TemporaryV4InlineShim(x)).OfType <IInlineProjection>().ToArray());
_establishTombstone = new Lazy <EstablishTombstoneStream>(() => new EstablishTombstoneStream(this));
}
public static void AddAsyncEventHandlers(this ProjectionCollection projectionCollection, Func <Type, IEnumerable <object> > handlerFactory)
{
projectionCollection.Add(new EventDispatcher(handlerFactory));
}
private static void AddAggregate <T>(ProjectionCollection projections)
where T : class, new()
{
projections.AggregateStreamsWith <T>();
}
private static void AddTransform <TEvent, TView>(ProjectionCollection projections, ITransform <TEvent, TView> transform)
{
projections.TransformEvents(transform);
}
