public function getMetadata($className, $group = 'default')
{
$metadata = new Metadata();
$columns = $fieldsMetadata = $groupBy = array();
foreach ($this->getDrivers() as $driver) {
$columns = array_merge($columns, $driver->getClassColumns($className, $group));
$fieldsMetadata[] = $driver->getFieldsMetadata($className, $group);
$groupBy = array_merge($groupBy, $driver->getGroupBy($className, $group));
}
$mappings = $cols = array();
foreach ($columns as $fieldName) {
$map = array();
foreach ($fieldsMetadata as $field) {
if (isset($field[$fieldName]) && (!isset($field[$fieldName]['groups']) || in_array($group, (array) $field[$fieldName]['groups']))) {
$map = array_merge($map, $field[$fieldName]);
}
}
if (!empty($map)) {
$mappings[$fieldName] = $map;
$cols[] = $fieldName;
}
}
$metadata->setFields($cols);
$metadata->setFieldsMappings($mappings);
$metadata->setGroupBy($groupBy);
return $metadata;
}