Storm\Drivers\Base\Object\Properties\CollectionProperty::PersistRelationshipChanges PHP Method

    protected function PersistRelationshipChanges(Object\Domain $Domain, Object\UnitOfWork $UnitOfWork, $ParentEntity, $CurrentValue, $HasOriginalValue, $OriginalValue)
    {
        $RelationshipChanges = [];
        $OriginalEntities = [];
        $CurrentEntities = [];
        if (!$CurrentValue instanceof Collections\ICollection) {
            if (!$CurrentValue instanceof \Traversable) {
                throw new Object\ObjectException('Invalid value for collection property on entity %s, Traversable expected, %s given', $this->GetEntityMap()->GetEntityType(), \Storm\Core\Utilities::GetTypeOrClass($CurrentValue));
            }
            foreach ($CurrentValue as $Entity) {
                if ($this->IsValidEntity($Entity)) {
                    $CurrentEntities[] = $Entity;
                }
            }
        } else {
            if ($CurrentValue instanceof Collections\LazyCollection && !$CurrentValue->__IsLoaded()) {
                return [];
            } else {
                if (!$CurrentValue->__IsAltered()) {
                    foreach ($CurrentValue->ToArray() as $Entity) {
                        if ($Entity instanceof Proxies\IProxy && !$Entity->__IsAltered()) {
                            continue;
                        }
                        $UnitOfWork->PersistRelationships($Entity);
                    }
                    return [];
                } else {
                    $CurrentEntities = $CurrentValue->ToArray();
                }
            }
        }
        if ($HasOriginalValue) {
            $OriginalEntities = $OriginalValue->ToArray();
        }
        $NewOrAlteredEntities = $this->ComputeDifference($CurrentEntities, $OriginalEntities);
        $RemovedEntities = $this->ComputeIdentityDifference($Domain, $OriginalEntities, $CurrentEntities);
        foreach ($NewOrAlteredEntities as $NewEntity) {
            $RelationshipChanges[] = new Object\RelationshipChange($this->RelationshipType->GetPersistedRelationship($Domain, $UnitOfWork, $ParentEntity, $NewEntity), null);
        }
        foreach ($RemovedEntities as $RemovedEntity) {
            $RelationshipChanges[] = new Object\RelationshipChange(null, $this->RelationshipType->GetDiscardedRelationship($Domain, $UnitOfWork, $ParentEntity, $RemovedEntity));
        }
        return $RelationshipChanges;
    }