public TResult MapResult <TResult>(object?source, Expression expression)
{
if (source != null && !(source is TResult) && source.IsCollection(out var enumerable))
{
var elementType = TypeHelper.GetElementType(enumerable.GetType()) ?? throw new RemoteLinqException($"Failed to get element type of {enumerable.GetType()}.");
if (typeof(TResult).IsAssignableFrom(elementType) && expression is MethodCallExpression methodCallExpression)
{
return(DynamicResultMapper.MapToSingleResult <TResult>(elementType, enumerable, methodCallExpression));
}
}
return((TResult)source);
}
public TResult MapResult <TResult>(object source, Expression expression)
{
if (source is IEnumerable enumerable)
{
var elementType = TypeHelper.GetElementType(enumerable.GetType());
if (typeof(TResult).IsAssignableFrom(elementType) && expression is MethodCallExpression methodCallExpression)
{
return(DynamicResultMapper.MapToSingleResult <TResult>(elementType, enumerable, methodCallExpression));
}
}
return((TResult)source);
}
/// <inheritdoc/>
public TResult?MapResult <TResult>(object?source, Expression expression)
{
if (source is not null && source is not TResult && source.IsCollection(out var enumerable))
{
var elementType = TypeHelper.GetElementType(enumerable.GetType());
if (typeof(TResult).IsAssignableFrom(elementType) && expression is MethodCallExpression methodCallExpression)
{
return(DynamicResultMapper.MapToSingleResult <TResult>(elementType, enumerable, methodCallExpression));
}
}
return(source is TResult result
? result
: default);
