public static IQueryPlanNode DeserializeQueryPlan(this ISystemContext context, Type nodeType, BinaryReader reader)
{
var serializers = context.ResolveAllServices <IQueryPlanNodeSerializer>();
foreach (var serializer in serializers)
{
if (serializer.CanSerialize(nodeType))
{
return((IQueryPlanNode)serializer.Deserialize(reader));
}
}
throw new InvalidOperationException(string.Format("Could not find any serializer for node type '{0}'.", nodeType));
}
public static IRoutine ResolveRoutine(this ISystemContext context, Invoke invoke, IQuery queryContext)
{
var resolvers = context.ResolveAllServices <IRoutineResolver>();
foreach (var resolver in resolvers)
{
var routine = resolver.ResolveRoutine(invoke, queryContext);
if (routine != null)
{
return(routine);
}
}
return(null);
}
public static SqlType ResolveType(this ISystemContext context, string typeName, params DataTypeMeta[] meta)
{
var resolvers = context.ResolveAllServices <ITypeResolver>();
var resolveContext = new TypeResolveContext(SqlTypeCode.Type, typeName, meta);
foreach (var typeResolver in resolvers)
{
var type = typeResolver.ResolveType(resolveContext);
if (type != null)
{
return(type);
}
}
return(null);
}
public static void SerializeQueryPlan(this ISystemContext context, IQueryPlanNode node, BinaryWriter writer)
{
var nodeType = node.GetType();
var serializers = context.ResolveAllServices <IQueryPlanNodeSerializer>();
foreach (var serializer in serializers)
{
if (serializer.CanSerialize(nodeType))
{
serializer.Serialize(node, writer);
return;
}
}
throw new InvalidOperationException(string.Format("Could not find any serializer for node type '{0}'.", nodeType));
}
public static IIndexFactory ResolveIndexFactory(this ISystemContext context, string indexType)
{
return(context.ResolveAllServices <IIndexFactory>().FirstOrDefault(x => x.HandlesIndexType(indexType)));
}
