/**
* Returns general cache key indenpendent on query parameters or sql limit
* Used e.g. for previously accessed columns caching
* @return string
*/
protected function getGeneralCacheKey()
{
if ($this->generalCacheKey) {
return $this->generalCacheKey;
}
return $this->generalCacheKey = md5(serialize(array(__CLASS__, $this->name, $this->sqlBuilder->getConditions())));
}
/**
* Loads cache of previous accessed columns and returns it
*
* @internal
* @return array|false
*/
public function getPreviousAccessed()
{
$cache = $this->connection->getCache();
if ($this->rows === null && $cache && !is_string($this->prevAccessed)) {
$this->accessed = $this->prevAccessed = $cache->load(array(__CLASS__, $this->name, $this->sqlBuilder->getConditions()));
}
return $this->prevAccessed;
}
/**
* Returns general cache key independent on query parameters or sql limit
* Used e.g. for previously accessed columns caching
* @return string
*/
protected function getGeneralCacheKey()
{
if ($this->generalCacheKey) {
return $this->generalCacheKey;
}
$key = [__CLASS__, $this->name, $this->sqlBuilder->getConditions()];
$trace = [];
foreach (debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) as $item) {
$trace[] = isset($item['file'], $item['line']) ? $item['file'] . $item['line'] : NULL;
}
$key[] = $trace;
return $this->generalCacheKey = md5(serialize($key));
}
/**
* Returns general cache key independent on query parameters or sql limit
* Used e.g. for previously accessed columns caching
* @return string
*/
protected function getGeneralCacheKey()
{
if ($this->generalCacheKey) {
return $this->generalCacheKey;
}
$key = array(__CLASS__, $this->name, $this->sqlBuilder->getConditions());
if (!$this->generalCacheTraceKey) {
$trace = array();
foreach (debug_backtrace(PHP_VERSION_ID >= 50306 ? DEBUG_BACKTRACE_IGNORE_ARGS : FALSE) as $item) {
$trace[] = isset($item['file'], $item['line']) ? $item['file'] . $item['line'] : NULL;
}
$this->generalCacheTraceKey = $trace;
}
$key[] = $this->generalCacheTraceKey;
return $this->generalCacheKey = md5(serialize($key));
}
/**
* Returns cache key for selected columns caching
* @return string
*/
protected function getCacheKey()
{
return md5(serialize(array(__CLASS__, $this->name, $this->sqlBuilder->getConditions())));
}
protected function saveCacheState()
{
if ($this->observeCache && $this->cache && !$this->sqlBuilder->getSelect() && $this->accessedColumns != $this->previousAccessedColumns) {
$this->cache->save(array(__CLASS__, $this->name, $this->sqlBuilder->getConditions()), $this->accessedColumns);
}
}
protected function saveCacheState()
{
if ($this->observeCache && ($cache = $this->connection->getCache()) && !$this->sqlBuilder->getSelect() && $this->accessed != $this->prevAccessed) {
$cache->save(array(__CLASS__, $this->name, $this->sqlBuilder->getConditions()), $this->accessed);
}
}
