private static void WithDbMetadata(
Action
<IEnumerable <Policy>, IEnumerable <Entity>, IEnumerable <EntityCardViewFieldBinding>,
IEnumerable <EntityListViewFieldBinding>, IEnumerable <EntityLookupViewFieldBinding>,
IEnumerable <EntityReferenceFieldBinding> > init)
{
var entityMappingTypes = typeof(PropertiesOwnerMap).Assembly.GetExportedTypes();
var abacMappingTypes = typeof(PolicyMap).Assembly.GetExportedTypes();
var entityMappingMapper = new ModelMapper();
entityMappingMapper.AddMappings(entityMappingTypes);
entityMappingMapper.AddMappings(abacMappingTypes);
var cfg = GetDbConfiguration();
cfg.AddMapping(entityMappingMapper.CompileMappingForAllExplicitlyAddedEntitiesFixxed(entityMappingTypes));
using (var factory = cfg.BuildSessionFactory())
using (var session = factory.OpenSession())
{
//var policies = session.Query<Policy>().ToFuture();
//var entities = session.Query<PropertiesOwner>().FetchMany(po => po.Properties).ToFuture();
//var cardViewFieldBindings = session.Query<EntityCardViewFieldBinding>().ToFuture();
//var listViewFieldBindings = session.Query<EntityListViewFieldBinding>().ToFuture();
//var lookupViewFieldBindings = session.Query<EntityLookupViewFieldBinding>().ToFuture();
//var refFieldBindings = session.Query<EntityReferenceFieldBinding>().ToList();
//init(policies, entities.OfType<Entity>(), cardViewFieldBindings, listViewFieldBindings, lookupViewFieldBindings,
// refFieldBindings);
// Задача - вычитать метаданные за меньшее кол-во запросов с максимальной скоростью
// ниже приведено 2 варианта решения:
// * большими блоками с явным fetch-ем
// * малыми блоками с fetch-ем на hibernate
// По результатам тестов пока быстрее читать малыми блоками
//var sw = new Stopwatch();
//sw.Start();
var policies = session.Query <Policy>().ToFuture();
/*
* // Вариант 1
* var associations = session.Query<Association>()
* .Fetch(i => i.RightRole).ThenFetch(i => i.Owner)
* .Fetch(i => i.LeftRole).ThenFetch(i => i.Owner)
* .ToList();
* var entities = session.Query<Entity>()
* .FetchMany(po => po.Properties).ThenFetchMany(i => i.Validators)
* .FetchMany(i => i.JoinTables).ThenFetch(i => i.JoinToEntity)
* .ToList();
*/
// Вариант 2
var subselects =
session.Query <SubselectEntity>().FetchMany(i => i.Properties).FetchMany(i => i.SyncTables).ToList();
var entities = session.Query <TableEntity>().FetchMany(i => i.JoinTables).ToList();
var associations = session.Query <Association>().Fetch(i => i.RightRole).Fetch(i => i.LeftRole).ToList();
var propsWithValidators = session.Query <Property>().FetchMany(i => i.Validators).ToList();
var propertiesOwners = session.Query <PropertiesOwner>().FetchMany(i => i.Properties).ToList();
var bindings = session.Query <EntityPropertyBinding>().ToList();
init(policies, propertiesOwners.OfType <Entity>(),
bindings.OfType <EntityCardViewFieldBinding>(),
bindings.OfType <EntityListViewFieldBinding>(),
bindings.OfType <EntityLookupViewFieldBinding>(),
bindings.OfType <EntityReferenceFieldBinding>());
}
}