Therefore, you must first assign a new business object instance to a business object variable before using it.
因此,在使用业务对象变量前,必须首先将新的业务对象实例赋值给它。
2
Assign the domain HR to the domain object file (esalary.log) using setsecattr command.
用setsecattr命令将域hr分配给该域对象文件(esalary . log)。
3
Inside the _setstate_ method we are able to recreate the file object based on the name and position information we pickled, and assign the file objectto the instance's logfile attribute.