/**
* 加载对应数据库所有元数据
*
* @param OOP_ORM_Data $obj
* @return $this
* @throws Exception
*/
public function load_all_metadata(OOP_ORM_Data $obj)
{
$class_name = $obj->class_name();
$meta_table_of_key = OOP_ORM_DI::get_meta_table_of_key($class_name);
$meta_group_of_key = OOP_ORM_DI::get_meta_group_of_key($class_name);
if (!$meta_table_of_key) {
# 没有元数据
return $this;
}
# 没有主键
if (!$obj->pk()) {
return $this;
}
$keys_of_table = array();
foreach ($meta_table_of_key as $key => $table) {
$keys_of_table[$table][] = $key;
}
$data = array();
$groups_of_table = array();
# 读数据
foreach ($keys_of_table as $table => $keys) {
foreach ($this->load_metadata($obj, $table) as $hash => $item) {
$data[$table][$item['meta_group']][$hash] = $item;
}
foreach ($keys as $key) {
$group = $meta_group_of_key[$key];
$groups_of_table[$table][$group] = $group;
}
}
foreach ($groups_of_table as $table => $groups) {
foreach ($groups as $group) {
# 预置空数据
$obj->__orm_callback('set_metadata', $table, $group, array());
}
}
foreach ($data as $table => $group_data) {
foreach ($group_data as $group => $item) {
$obj->__orm_callback('set_metadata', $table, $group, $item);
}
}
return $this;
}
