internal DirectionalRelationship(EntityKey toEntityKey, AssociationEndMember fromEnd, AssociationEndMember toEnd, AssociationSet associationSet, IEntityStateEntry stateEntry)
{
ToEntityKey = EntityUtil.CheckArgumentNull(toEntityKey, "toEntityKey");
FromEnd = EntityUtil.CheckArgumentNull(fromEnd, "fromEnd");
ToEnd = EntityUtil.CheckArgumentNull(toEnd, "toEnd");
AssociationSet = EntityUtil.CheckArgumentNull(associationSet, "associationSet");
StateEntry = EntityUtil.CheckArgumentNull(stateEntry, "stateEntry");
_equivalenceSetLinkedListNext = this;
_hashCode = toEntityKey.GetHashCode() ^
fromEnd.GetHashCode() ^
toEnd.GetHashCode() ^
associationSet.GetHashCode();
}