/**
* Get type param
* @param string $key
* @return IParam
* */
private function getType($key)
{
while (in_array(substr($key, 0, 1), $this->getSpecialCharsArray())) {
$key = substr($key, 1);
}
if (array_key_exists($key, $this->filter_rule)) {
$type = $this->filter_rule[$key];
switch ($type) {
case 'string':
return new String($this->sql_builder);
case 'number':
return new Number($this->sql_builder);
case 'date':
return DateTime::short($this->sql_builder);
case 'datetime':
return DateTime::full($this->sql_builder);
case 'boolean':
return new Boolean($this->sql_builder);
default:
if ($this->config()->exists('filter_rule', $type)) {
$class = $this->config()->get('filter_rule', $type);
if (class_exists($class)) {
return new $class($this->sql_builder);
} else {
throw new \InvalidArgumentException("Filter rule class `{$class}` is not exists");
}
} else {
throw new \InvalidArgumentException("Filter rule `{$type}` is not exists");
}
}
} else {
throw new \InvalidArgumentException("Unknow field `{$key}`");
}
}
