/// <summary>
/// Creates a query generator.
/// </summary>
/// <typeparam name="TMappedClass">The type of the mapped class.</typeparam>
/// <param name="mappingInfo">The mapping information.</param>
/// <returns>The requested query generator</returns>
/// <exception cref="ArgumentNullException">mappingInfo</exception>
/// <exception cref="ArgumentException">Provider not found</exception>
public IGenerator <TMappedClass>?CreateGenerator <TMappedClass>(IMappingSource mappingInfo)
where TMappedClass : class
{
if (mappingInfo?.GetChildMappings <TMappedClass>().Any() != true)
{
return(null);
}
var provider = mappingInfo.Source.Provider;
if (!Providers.TryGetValue(provider, out var QueryProvider))
{
throw new ArgumentException("Provider not found: " + provider);
}
if (IsDebug)
{
Logger.Debug("Creating generator for type {TypeName:l} in {SourceName:l}", typeof(TMappedClass).GetName(), mappingInfo.Source.Name);
}
return(QueryProvider.CreateGenerator <TMappedClass>(mappingInfo));
}
