public AsyncTypeAwaitable FirstAsync(QueryAdapterBase queryAdapter, IQueryable source, CancellationToken cancellation) { if (source is not IQueryable <T> typedQueryable) { typedQueryable = source.Cast <T>(); } var task = queryAdapter.FirstAsync(typedQueryable, cancellation); return(task.AsTypeAwaitable()); }
public AsyncTypeAwaitable FirstAsync( QueryAdapterBase queryAdapter, IQueryable source, Expression predicate, CancellationToken cancellation) { if (source is not IQueryable <T> typedQueryable) { typedQueryable = source.Cast <T>(); } if (predicate is UnaryExpression unaryExpression && unaryExpression.NodeType == ExpressionType.Quote) { predicate = unaryExpression.Operand; } // TODO: Can we convert the selector if it is not of the appropriate type? var task = queryAdapter.FirstAsync(typedQueryable, (Expression <Func <T, bool> >)predicate, cancellation); return(task.AsTypeAwaitable()); }