public TResult Execute <TResult>(Expression expression)
{
var result = NemoQueryContext.Execute(expression, _connection);
if (typeof(IEnumerable).IsAssignableFrom(typeof(TResult)))
{
return((TResult)result);
}
return(((IEnumerable)result).OfType <TResult>().FirstOrDefault());
}
public TResult Execute <TResult>(Expression expression)
{
var result = NemoQueryContext.Execute(expression, _connection, config: _config);
var typeName = result.GetType().Name;
if (typeName == "EagerLoadEnumerable`1" && !typeof(IEnumerable).IsAssignableFrom(typeof(TResult)))
{
return(((IEnumerable)result).OfType <TResult>().FirstOrDefault());
}
return((TResult)result);
}
public async ValueTask <TResult> ExecuteAsync <TResult>(Expression expression, CancellationToken token)
{
var async = NemoQueryContext.Execute(expression, _connection, true, _config);
var typeName = async.GetType().Name;
if (typeof(IEnumerable).IsAssignableFrom(typeof(TResult)))
{
var type = Reflector.GetElementType(typeof(TResult));
if (typeof(IList).IsAssignableFrom(typeof(TResult)))
{
var task = (Task)ToEnumerableAsyncMethod.MakeGenericMethod(type).Invoke(null, new object[] { async });
await task.ConfigureAwait(false);
var items = (IEnumerable)typeof(Task <>).MakeGenericType(typeof(IEnumerable <>).MakeGenericType(type)).GetProperty("Result").GetGetMethod().Invoke(task, null);
var list = List.Create(type);
foreach (var item in items)
{
list.Add(item);
}
if (typeof(TResult).IsArray)
{
return((TResult)(object)List.CreateArray(type, list));
}
return((TResult)list);
}
else
{
var task = (Task <TResult>)ToEnumerableAsyncMethod.MakeGenericMethod(type).Invoke(null, new object[] { async });
return(await task.ConfigureAwait(false));
}
}
else if (typeName == "EagerLoadEnumerableAsync`1" && !typeof(IEnumerable).IsAssignableFrom(typeof(TResult)))
{
return(await((IAsyncEnumerable <TResult>)async).FirstOrDefaultAsync().ConfigureAwait(false));
}
else
{
return(await((Task <TResult>)async).ConfigureAwait(false));
}
}
public object Execute(Expression expression)
{
return(NemoQueryContext.Execute(expression, _connection));
}