/**
* Filter the given Database by the given comparisons
*
* @param Database $dataCollection Database instance to filter
* @param array|SplFixedArray|\SplObjectStorage $comparisonCollection Filter conditions
* @param bool $pushMatchesToResult If set to TRUE the matching objects will be added to the result through calling parent::push()
* @return SplFixedArray
*/
protected function _filterCollectionWithComparisons($dataCollection, $comparisonCollection, $pushMatchesToResult = FALSE)
{
if (is_array($comparisonCollection)) {
$comparisonCollection = SplFixedArray::fromArray($comparisonCollection);
} else {
$comparisonCollection->rewind();
$comparisonCollection = SplFixedArray::fromArray(iterator_to_array($comparisonCollection));
}
$comparisonCollectionCount = $comparisonCollection->getSize();
if ($comparisonCollectionCount == 0) {
return $dataCollection;
}
$dataCollectionRaw = $dataCollection->getRawData();
$dataCollectionCount = $dataCollectionRaw->getSize();
$resultArray = new SplFixedArray($dataCollectionCount);
$i = 0;
$matchesIndex = 0;
while ($i < $dataCollectionCount) {
$j = 0;
$item = $dataCollectionRaw[$i];
$comparisonResult = TRUE;
while ($j < $comparisonCollectionCount) {
$comparison = $comparisonCollection[$j];
if (!$comparison->perform($item)) {
$comparisonResult = FALSE;
}
$j++;
}
if ($comparisonResult) {
$matchingItem = $dataCollection->getObjectDataForIndexOrTransformIfNotExists($i);
if ($matchingItem === NULL) {
DebugUtility::var_dump($item);
DebugUtility::pl('Object for index %d is NULL', $i);
}
$resultArray[$matchesIndex] = $matchingItem;
if ($pushMatchesToResult) {
parent::offsetSet($matchesIndex, $matchingItem);
}
$matchesIndex++;
}
$i++;
}
$resultArray->setSize($matchesIndex);
return SplFixedArray::fromArray($resultArray->toArray());
}
