/**
* 根据字段ORM配置获取ORM数据
*
* @param OOP_ORM_Data $data_obj
* @param array $orm_config
* @throws Exception
* @return mixed
*/
public static function get_orm_data_by_config(OOP_ORM_Data $data_obj, $orm_config, $index)
{
if (isset($orm_config['cache'])) {
# 设置了缓存
$c_config = $orm_config;
foreach ($c_config['mapping'] as &$item) {
$item = $data_obj->{$item};
}
$data = OOP_ORM_Parse::get_orm_cache_data($data_obj, $index, $c_config);
$orm_name = 'ORM_' . $orm_config['name'] . '_Data';
if ($data && is_object($data) && $data instanceof $orm_name) {
return $data;
}
$can_try_get_gourps_data = false;
} else {
# 是否可以批量取对象集里的数据
$can_try_get_gourps_data = true;
}
# 映射ORM对象
$obj_name = 'ORM_' . $orm_config['name'] . '_Finder';
if (!class_exists($obj_name, true)) {
throw new Exception('指定的ORM:' . $orm_config['name'] . '不存在！');
}
$obj = new $obj_name();
# 支持OFFSET
if (isset($orm_config['offset'])) {
$obj->offset($orm_config['offset']);
if ($orm_config['offset'] > 0) {
$can_try_get_gourps_data = false;
//有OFFSET的话，不能同时取多条数据
}
}
# 支持GROUP BY
if (isset($orm_config['group_by'])) {
foreach ($orm_config['group_by'] as $item) {
$obj->group_by($item);
}
$can_try_get_gourps_data = false;
}
# 支持ORDER BY
if (isset($orm_config['order_by'])) {
foreach ($orm_config['order_by'] as $key => $item) {
$obj->order_by($key, $item);
}
$can_try_get_gourps_data = false;
}
# 支持IN
if (isset($orm_config['in'])) {
foreach ($orm_config['in'] as $key => $item) {
$obj->in($key, $item);
}
$can_try_get_gourps_data = false;
}
# 获取ORM单条数据
if ($can_try_get_gourps_data && $orm_config['return'] == OOP_ORM::PARAM_RETURN_SINGLE) {
# 对于单条数据，可以尝试批量获取，以优化SQL性能
$data = OOP_ORM_Parse::_get_orm_group_data($obj, $data_obj, $orm_config, $index);
if (true !== $data) {
# 如果!==true，则直接返回
return $data;
}
}
$orm_where = array();
# 处理mapping
if ($orm_config['mapping']) {
foreach ($orm_config['mapping'] as $k => $v) {
$orm_where[$k] = $data_obj->{$v};
}
}
if (isset($orm_config['where'])) {
$orm_where = $orm_config['where'] + $orm_where;
}
if ($orm_where) {
# 设置autowhere
$obj->set_auto_where($orm_where);
}
if ($orm_config['limit']) {
$obj->limit($orm_config['limit']);
}
if ($orm_config['return'] == OOP_ORM::PARAM_RETURN_SINGLE) {
# 获取单条数据
$data = $obj->find()->current();
} elseif ($orm_config['return'] == OOP_ORM::PARAM_RETURN_GROUP) {
# 获取一组数据
$data = $data = $obj->find();
} else {
# 当前ORM对象
$data = $obj;
}
if (isset($orm_config['cache'])) {
# 设置缓存
OOP_ORM_Parse::set_orm_cache_data($data_obj, $index, $c_config, $data);
}
return $data;
}
