public function getRegisteredChain($key, $force_create = false)
{
if (isset($this->global_chains[$key])) {
return $this->global_chains[$key];
}
if ($force_create) {
$chain = QueryChain::getChainByDefinition($this->init_entity, $key);
$this->registerChain('global', $chain);
return $chain;
}
return false;
}
public function getBuildFromChains()
{
if (is_null($this->buildFromChains)) {
$this->buildFromChains = array();
foreach ($this->buildFrom as $elem) {
$this->buildFromChains[] = QueryChain::getChainByDefinition($this->entity, $elem);
}
}
return $this->buildFromChains;
}
public static function getAliasByChain(QueryChain $chain)
{
$alias = array();
$elements = $chain->getAllElements();
// cut non-last expressions
foreach ($elements as $k => $element) {
if ($element->getValue() instanceof ExpressionField && $element !== end($elements)) {
//unset($elements[$k]);
}
}
// add prefix of init entity
if (count($elements) > 2) {
$alias[] = $chain->getFirstElement()->getAliasFragment();
}
// add other members of chain
$elements = array_slice($elements, 1);
foreach ($elements as $element) {
$fragment = $element->getAliasFragment();
if (strlen($fragment)) {
$alias[] = $fragment;
}
}
return join('_', $alias);
}
/**
* @return QueryChain
**/
public static function exceptAllBlock()
{
$args = func_get_args();
return QueryChain::block($args, self::EXCEPT_ALL);
}