/**
* Loads the config records to examine for the query.
*
* @return array
* Config records keyed by entity IDs.
*/
protected function loadRecords()
{
$prefix = $this->entityType->getConfigPrefix() . '.';
$prefix_length = strlen($prefix);
// Search the conditions for restrictions on configuration object names.
$names = FALSE;
$id_condition = NULL;
$id_key = $this->entityType->getKey('id');
if ($this->condition->getConjunction() == 'AND') {
$lookup_keys = $this->entityType->getLookupKeys();
$conditions = $this->condition->conditions();
foreach ($conditions as $condition_key => $condition) {
$operator = $condition['operator'] ?: (is_array($condition['value']) ? 'IN' : '=');
if (is_string($condition['field']) && ($operator == 'IN' || $operator == '=')) {
// Special case ID lookups.
if ($condition['field'] == $id_key) {
$ids = (array) $condition['value'];
$names = array_map(function ($id) use($prefix) {
return $prefix . $id;
}, $ids);
} elseif (in_array($condition['field'], $lookup_keys)) {
// If we don't find anything then there are no matches. No point in
// listing anything.
$names = array();
$keys = (array) $condition['value'];
$keys = array_map(function ($value) use($condition) {
return $condition['field'] . ':' . $value;
}, $keys);
foreach ($this->getConfigKeyStore()->getMultiple($keys) as $list) {
$names = array_merge($names, $list);
}
}
} elseif (!$id_condition && $condition['field'] == $id_key) {
$id_condition = $condition;
}
// We stop at the first restricting condition on name. In the case where
// there are additional restricting conditions, results will be
// eliminated when the conditions are checked on the loaded records.
if ($names !== FALSE) {
// If the condition has been responsible for narrowing the list of
// configuration to check there is no point in checking it further.
unset($conditions[$condition_key]);
break;
}
}
}
// If no restrictions on IDs were found, we need to parse all records.
if ($names === FALSE) {
$names = $this->configFactory->listAll($prefix);
}
// In case we have an ID condition, try to narrow down the list of config
// objects to load.
if ($id_condition && !empty($names)) {
$value = $id_condition['value'];
$filter = NULL;
switch ($id_condition['operator']) {
case '<>':
$filter = function ($name) use($value, $prefix_length) {
$id = substr($name, $prefix_length);
return $id !== $value;
};
break;
case 'STARTS_WITH':
$filter = function ($name) use($value, $prefix_length) {
$id = substr($name, $prefix_length);
return strpos($id, $value) === 0;
};
break;
case 'CONTAINS':
$filter = function ($name) use($value, $prefix_length) {
$id = substr($name, $prefix_length);
return strpos($id, $value) !== FALSE;
};
break;
case 'ENDS_WITH':
$filter = function ($name) use($value, $prefix_length) {
$id = substr($name, $prefix_length);
return strrpos($id, $value) === strlen($id) - strlen($value);
};
break;
}
if ($filter) {
$names = array_filter($names, $filter);
}
}
// Load the corresponding records.
$records = array();
foreach ($this->configFactory->loadMultiple($names) as $config) {
$records[substr($config->getName(), $prefix_length)] = $config->get();
}
return $records;
}
