private IImmutableList <IItem> TransformByMap(object content)
{
if (content == null)
{
return(ImmutableList <IItem> .Empty);
}
Type contentType = content.GetType();
MethodInfo serviceMethod = GetType().GetMethod(nameof(GetMappingService));
if (serviceMethod == null)
{
return(ImmutableList <IItem> .Empty);
}
MethodInfo genericServiceMethod = serviceMethod.MakeGenericMethod(contentType);
IItemMappingService mappingService = (IItemMappingService)genericServiceMethod.Invoke(this, null);
if (mappingService == null)
{
logger.Warn($"No mapping service for result content of type: {contentType.Name}.", contentType, content);
return(ImmutableList <IItem> .Empty);
}
Type genericMappingServiceType = typeof(IItemMappingService <>);
Type targetMappingServiceType = genericMappingServiceType.MakeGenericType(contentType);
MethodInfo targetMethod = targetMappingServiceType.GetMethod(nameof(IItemMappingService <string> .Map));
if (targetMethod == null)
{
return(ImmutableList <IItem> .Empty);
}
try
{
object items = targetMethod.Invoke(mappingService, new[] { content });
return((IImmutableList <IItem>)items);
}
catch (Exception e)
{
logger.Error("Error during mapping from result content to items.", e);
return(ImmutableList <IItem> .Empty);
}
}
public void RegisterMappingService <TContent>(IItemMappingService <TContent> service)
{
mapping[typeof(TContent)] = service;
}
