/// <summary>
/// Retrieves one or more results, matching the query input. If there are 0 results, throws an exception.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query to run, and retrieve Entities via</param>
/// <returns></returns>
/// <exception cref="Wolf.Utility.Core.Exceptions.IncorrectCountException{T}">Thrown when there is 0 results found matching the query</exception>
private ICollection <T> FindMultipleResults <T>(IQueryable <T> query) where T : class, IEntity
{
lock (ContextLock)
{
var result = query.ToList();
if (result.Any())
{
return(result);
}
throw IncorrectEntityCountException <T> .Constructor(1, result.Count, elements : new List <T>());
}
}
/// <summary>
/// Retrieves exactly one result, matching the query input. If there are more or less, throws an exception.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query to run, and retrieve Entities via</param>
/// <returns></returns>
/// <exception cref="Wolf.Utility.Core.Exceptions.IncorrectCountException{T}">Thrown when there is less or more than 1 result found matching the query</exception>
private T FindOneResult <T>(IQueryable <T> query) where T : class, IEntity
{
lock (ContextLock)
{
var result = query.ToList();
if (result.Count == 1)
{
return(result.First());
}
if (result.Count > 1)
{
throw IncorrectEntityCountException <T> .Constructor(1, result.Count, true, result);
}
throw IncorrectEntityCountException <T> .Constructor(1, result.Count, elements : new List <T>());
}
}
