/**
* 创建实例化数据
*
* @param string $key
*/
protected function _create_data($index)
{
# 标记为已创建
$this->_created_offset[$index] = true;
$config = $this->_get_offset_config($index);
if (!$config) {
return false;
}
# 是否已经设置过数据
$offset_isset = isset($this->_offset_data[$index]);
if ($offset_isset) {
$offset_data = $data = $this->_offset_data[$index];
if (is_object($data) && $data instanceof stdClass) {
# 将stdClass对象转成array类型
$data = (array) $data;
}
} else {
if (isset($config['cache'])) {
# 数据缓存
$data = OOP_ORM_Parse::get_offset_cache_data($this, $index, $config['cache']);
if (false !== $data) {
$this->_offset_data[$index] = $data;
return true;
}
} else {
$data = false;
}
if (null === $data || false === $data) {
if (isset($config['_parent_offset_name'])) {
# 映射字段
$parent_offset = $config['_parent_offset_name'];
$data = OOP_ORM_Parse::get_sub_offset_data($this->{$parent_offset}, explode('.', $config['_sub_key_name']), $index);
} elseif (isset($config['orm'])) {
# 获取数据
$data = OOP_ORM_Parse::get_orm_data_by_config($this, $config['orm'], $index);
} elseif (isset($config['data'])) {
# 处理mapping
if (isset($config['data']['mapping'])) {
foreach ($config['data']['mapping'] as $k => $v) {
$config['data']['where'][$v] = $this->{$k};
}
}
$data = false;
# 处理缓存
if (isset($config['data']['cache'])) {
$data = OOP_ORM_Parse::get_cache_data($index, @$config['data']['where'], $config['data']['cache']);
}
if (false === $data) {
# 获取数据
$data = OOP_ORM_Parse::get_data($config['data'], $this);
# 缓存数据
if (isset($config['data']['cache'])) {
OOP_ORM_Parse::set_cache_data($index, @$config['data']['where'], $config['data']['cache'], $data);
}
}
} else {
$data = false;
}
}
}
// 需要返回OBJECT对象
if (isset($config['object'])) {
$object_name = $config['object']['name'];
if (!class_exists($object_name, true)) {
throw new Exception('指定的对象:' . $object_name . '不存在！');
}
if (isset($config['object']['callback']['set_data'])) {
$obj = new $object_name();
$call_set_data_function = $config['object']['callback']['set_data'];
$obj->{$call_set_data_function}($data);
} else {
$obj = new $object_name($data);
}
unset($data);
//释放引用关系
$data = $obj;
}
if (!$offset_isset || isset($offset_data) && $data !== $offset_data) {
$this->_offset_data[$index] = $data;
}
# 设置缓存
if (false !== $data && isset($config['cache'])) {
OOP_ORM_Parse::set_offset_cache_data($this, $index, $config['cache'], $data);
}
return true;
}