GPL_Persistent

gpl

1998 12-05

CLASS

GPL_Persistent - C++ persistent object

SYNOPSIS

GPL_Persistent provides persistence through the ability to save and restore internal state.

PARENTS

GPL_Object

public

MEMBER FUNCTIONS

virtual GPL_Boolean Pack (GPL_Message & msg) const

msg

virtual GPL_Boolean Unpack (GPL_Message & msg)
Unpack the internal state of the object from the message, msg. Derived classes should provide their own version of this method.

static GPL_Boolean PackToFile (const GPL_String & f, GPL_Persistent *object)
Pack the internal state of the object, object, into the file, f, which is created if needed, at the beginning of the file.

static GPL_Boolean PackToFile (GPL_File & f, GPL_Persistent *object)
Pack the internal state of the object, object, into the file, f, at the current location in the file.

static GPL_Boolean UnpackFromFile (const GPL_String & f, GPL_Persistent *object)
Unpack the internal state of the object, object, from the file, f at the beginning of the file.

static GPL_Boolean UnpackFromFile (GPL_File & f, GPL_Persistent *object)
Unpack the internal state of the object, object, from the file, f, at the current location in the file.