protected override IStream <TOut> CreateOutputStream(EfCoreLookupArgs <TIn, TValue, TEntity, TValueOut, TKey, TOut> args)
{
IPushObservable <TOut> matchingS = args.SourceStream.Observable.Map(elt =>
{
var matcher = this.ExecutionContext.ContextBag.Resolve(this.NodeName, () =>
{
var ctx = args.KeyedConnection == null
? this.ExecutionContext.DependencyResolver.Resolve <DbContext>()
: this.ExecutionContext.DependencyResolver.Resolve <DbContext>(args.KeyedConnection);
return(this.ExecutionContext.InvokeInDedicatedThreadAsync(ctx, () => new EfMatcher <TValue, TEntity, TKey>(new EfMatcherConfig <TValue, TEntity, TKey>
{
Context = ctx,
CreateIfNotFound = args.CreateIfNotFound,
LeftKeyExpression = args.GetLeftStreamKey,
RightKeyExpression = args.GetEntityStreamKey,
MinCacheSize = args.CacheSize,
GetFullDataset = args.GetFullDataset,
Query = args.Query(new DbContextWrapper(ctx))
})).Result);
});
TEntity entity = default;
var val = args.GetInputValue(elt);
if (!args.GetFullDataset)
{
entity = this.ExecutionContext.InvokeInDedicatedThreadAsync(matcher.Context, () => matcher.GetMatch(val)).Result;
}
else
{
entity = matcher.GetMatch(val);
}
return(args.GetOutputValue(elt, args.ResultSelector(val, entity)));
}
);
return(base.CreateUnsortedStream(matchingS));
}
public EfCoreLookupStreamNode(string name, EfCoreLookupArgs <TIn, TValue, TEntity, TValueOut, TKey, TOut> args) : base(name, args)
{
}
