/// <summary>
/// Initializes a new instance of the <see cref="AggregationService"/> class.
/// </summary>
/// <param name="locationService">The location service.</param>
/// <param name="userService">The user service.</param>
public AggregationService(LocationService locationService, UserService userService) : base()
{
this.LocationService = locationService;
this.UserService = userService;
Mappings = new List <MappingAggregator>
{
MappingAggregator.Init <AggregationModel, AggregationService>(x => x.User, x => x.UserService),
MappingAggregator.Init <AggregationModel, AggregationService>(x => x.Locations, x => x.LocationService),
};
}
/// <summary>
/// Gets the order by expression.
/// </summary>
/// <param name="map">The map.</param>
/// <param name="propertyServiceName">Name of the property service.</param>
/// <returns></returns>
private dynamic GetOrderByExpression(MappingAggregator map, string propertyServiceName = null)
{
var service = GetType().GetProperty(map.EntityMember.Member.Name).GetValue(this);
var serviceMappings = service.GetType().GetProperty(nameof(ServiceBase.Mappings)).GetValue(service) as List <Mapping>;
var serviceMapping = serviceMappings.First();
if (!string.IsNullOrEmpty(propertyServiceName))
{
serviceMapping = serviceMappings.Single(x => x.ModelMember.Member.Name == propertyServiceName);
}
var propertyService = map.AttachedQuery.ElementType.GetProperty(serviceMapping.EntityMember.Member.Name);
var parameter = Expression.Parameter(typeof(TJoinResult));
var leftMember = Expression.MakeMemberAccess(parameter, typeof(TJoinResult).GetProperty(map.ModelMember.Member.Name));
var rightMember = Expression.MakeMemberAccess(leftMember, propertyService);
return((dynamic)Expression.Lambda(rightMember, parameter));
}
