/**
* {@inheritdoc}
*/
public function count($column = self::DEFAULT_COUNTING_FIELD)
{
if ($column == self::DEFAULT_COUNTING_FIELD && !empty($this->loader->getPrimaryKey())) {
$column = 'DISTINCT(' . $this->loader->getPrimaryKey() . ')';
}
return parent::count($column);
}
/**
* {@inheritdoc}
*/
public function configureSelector(RecordSelector $selector)
{
if (empty($this->loaders) && empty($this->joiners)) {
//No need to create any column aliases
return;
}
parent::configureSelector($selector);
}
/**
* Execute query and every related query to compile records data in tree form - every relation
* data will be included as sub key.
*
* Attention, Selector will cache compiled data tree and not query itself to keep data integrity
* and to skip data compilation on second query.
*
* @return array
*/
public function fetchData()
{
//Pagination!
$this->applyPagination();
//Generating statement
$statement = $this->sqlStatement();
if (!empty($this->cacheLifetime)) {
$cacheKey = $this->cacheKey ?: md5(serialize([$statement, $this->getParameters()]));
if (empty($this->cacheStore)) {
$this->cacheStore = $this->orm->container()->get(CacheInterface::class)->store();
}
if ($this->cacheStore->has($cacheKey)) {
$this->logger()->debug("Selector result were fetched from cache.");
//We are going to store parsed result, not queries
return $this->cacheStore->get($cacheKey);
}
}
//We are bypassing run() method here to prevent query caching, we will prefer to cache
//parsed data rather that database response
$result = $this->database->query($statement, $this->getParameters());
//In many cases (too many inloads, too complex queries) parsing can take significant amount
//of time, so we better profile it
$benchmark = $this->benchmark('parseResult', $statement);
//Here we are feeding selected data to our primary loaded to parse it and and create
//data tree for our records
$this->loader->parseResult($result, $rowsCount);
$this->benchmark($benchmark);
//Memory freeing
$result->close();
//This must force loader to execute all post loaders (including ODM and etc)
$this->loader->loadData();
//Now we can request our primary loader for compiled data
$data = $this->loader->getResult();
//Memory free! Attention, it will not reset columns aliases but only make possible to run
//query again
$this->loader->clean();
if (!empty($this->cacheLifetime) && !empty($cacheKey)) {
//We are caching full records tree, not queries
$this->cacheStore->set($cacheKey, $data, $this->cacheLifetime);
}
return $data;
}
/**
* {@inheritdoc}
*/
public function createSelector()
{
if (empty($selector = parent::createSelector())) {
return null;
}
if (empty($this->parent)) {
//No need for where conditions
return $selector;
}
//Mounting where conditions
$this->mountConditions($selector);
//Aggregated keys (example: all parent ids)
if (empty($aggregatedKeys = $this->parent->aggregatedKeys($this->getReferenceKey()))) {
//Nothing to postload, no parents
return null;
}
//Adding condition
$selector->where($this->getKey(RecordEntity::OUTER_KEY), 'IN', $aggregatedKeys);
return $selector;
}
/**
* {@inheritdoc}
*
* We must parse pivot data.
*/
protected function fetchData(array $row)
{
$data = parent::fetchData($row);
$data[ORM::PIVOT_DATA] = array_combine($this->pivotColumns, array_slice($row, $this->pivotOffset, count($this->pivotColumns)));
return $data;
}
/**
* Parse single result row to generate data tree. Must pass parsing to every nested loader.
*
* @param array $row
* @return bool
*/
private function parseRow(array $row)
{
if (!$this->isLoadable()) {
//Nothing to parse, we are no waiting for any data
return;
}
//Fetching only required part of resulted row
$data = $this->fetchData($row);
if (empty($this->parent)) {
if ($this->deduplicate($data)) {
//Yes, this is reference, i'm using this method to build data tree using nested parsers
$this->result[] =& $data;
//Registering references to simplify tree compilation for post and inner loaders
$this->collectReferences($data);
}
$this->parseNested($row);
return;
}
if (!($referenceCriteria = $this->fetchCriteria($data))) {
//Relation not loaded
return;
}
if ($this->deduplicate($data)) {
//Registering references to simplify tree compilation for post and inner loaders
$this->collectReferences($data);
}
//Mounting parsed data into parent under defined container
$this->parent->mount($this->container, $this->getReferenceKey(), $referenceCriteria, $data, static::MULTIPLE);
$this->parseNested($row);
}
/**
* Create delete statement based on WHERE statement provided by Selector.
*
* @param QueryCompiler $compiler
* @return string
*/
protected function deleteStatement(QueryCompiler $compiler = null)
{
$compiler = !empty($compiler) ? $compiler : $this->compiler->reset();
$this->loader->configureSelector($this, false);
return $compiler->delete($this->loader->getTable() . ' AS ' . $this->loader->getAlias(), $this->whereTokens);
}
