public function getDbName($logic_column_value)
{
if (parent::getIsSingleDb()) {
return parent::getSingleDbName();
}
if (parent::getIsDateDb()) {
return parent::get_date_db_name();
}
if (parent::getDbLogicColumnType() && parent::getDbLogicColumnType() == 'string' && !is_numeric($logic_column_value)) {
$logic_column_value = cls_dbroute::strToInt($logic_column_value);
}
if (parent::getConsistentHashOneDbOneTable()) {
//每库一表时
$mod = $logic_column_value;
} else {
$mod = intval($logic_column_value % $this->getConsistentHashSeparateModMaxValue());
}
$default_db_name = null;
$db_name = null;
foreach ($this->getNodeList() as $node) {
if ($mod >= $node->getStart() && $mod < $node->getEnd()) {
$db_name = $node->getDbName();
break;
}
if ($node->getIsDefaultDb()) {
$default_db_name = $node->getDbName();
}
}
$return_db = $db_name ? $db_name : $default_db_name;
if (empty($return_db)) {
throw new DBRouteException('未找到db_name');
}
return $return_db;
}
