// Constructors
/// <summary>
/// Initializes a new instance of this class.
/// </summary>
/// <param name="owner">Persistent this entity set belongs to.</param>
/// <param name="field">Field corresponds to this entity set.</param>
protected EntitySetBase(Entity owner, FieldInfo field)
: base(owner.Session)
{
this.owner = owner;
Field = field;
State = new EntitySetState(this);
var association = Field.Associations.Last();
if (association.AuxiliaryType != null && association.IsMaster)
{
Domain domain = Session.Domain;
var itemType = domain.Model.Types[Field.ItemType];
auxilaryTypeKeyTransform = new CombineTransform(
false,
owner.TypeInfo.Key.TupleDescriptor,
itemType.Key.TupleDescriptor);
}
if (association.Multiplicity != Multiplicity.ManyToOne && association.Multiplicity != Multiplicity.OneToMany)
{
skipOwnerVersionChange = false;
}
else
{
skipOwnerVersionChange = Session.Domain.Configuration.VersioningConvention.DenyEntitySetOwnerVersionChange;
}
Initialize(WellKnownOrmTypes.EntitySetBase);
}
private int?GetItemIndex(EntitySetState state, Key key)
{
if (!state.IsFullyLoaded)
{
return(null);
}
if (!Session.EntityEvents.HasSubscribers)
{
return(null);
}
var subscriptionInfo = GetSubscription(EntityEventBroker.CollectionChangedEventKey);
if (subscriptionInfo.Second == null)
{
return(null);
}
// Ok, it seems there is a reason
// to waste linear time on calculating this...
int i = 0;
foreach (var cachedKey in state)
{
if (key == cachedKey)
{
return(i);
}
i++;
}
return(null);
}
internal bool LookupStateInCache(Key key, FieldInfo fieldInfo, out EntitySetState entitySetState)
{
var entityState = EntityStateCache[key, false];
if (entityState != null)
{
var entity = entityState.Entity;
if (entity != null)
{
var entitySet = (EntitySetBase)entity.GetFieldValue(fieldInfo);
if (entitySet.CheckStateIsLoaded())
{
entitySetState = entitySet.State;
return(true);
}
}
}
entitySetState = null;
return(false);
}
internal override bool LookupState(Key key, FieldInfo fieldInfo, out EntitySetState entitySetState)
{
return(ChainedHandler.LookupState(key, fieldInfo, out entitySetState));
}
internal virtual bool LookupState(Key key, FieldInfo fieldInfo, out EntitySetState entitySetState)
{
return(Session.LookupStateInCache(key, fieldInfo, out entitySetState));
}
