/**
* 选择合适的数据表
*
* @param string $start 起始时间
* @param string $end 结束时间
* @param string $unit 时间单位
* @return void
*/
protected function _selectDatetimeTable($start, $end, $unit)
{
$tableName = $this->_tableDAO->info('name');
if ('_' == substr($tableName, -2, 1)) {
$tableName = substr($tableName, 0, -2);
}
switch ($unit) {
case Zend_Date::YEAR:
case Zend_Date::MONTH:
case Zend_Date::DAY:
$tableName .= '_d';
break;
case Zend_Date::HOUR:
$tableName .= '_h';
break;
case Zend_Date::MINUTE:
$tableName .= '_i';
break;
case Zend_Date::SECOND:
break;
}
$this->_tableDAO->setOptions(array('name' => $tableName));
}
