Method and apparatus for archiving and unarchiving objects

• US 7,117,293 B1
• Filed: 05/12/2000
• Issued: 10/03/2006
• Est. Priority Date: 05/12/2000
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: Apple Computer Incorporated (Apple Inc.)
• Inventors: Graziano, John, Bertelrud, Anders
• Primary Examiner(s): BULLOCK JR, LEWIS ALEXANDER
• Application Number:
  US09/569,526
• Time in Patent Office: 2,335 Days
• Field of Search: 709/100, 709/101, 709/102, 709/103, 718100-108, 711100-161, 707/204, 719310-332
• US Class Current: 711/100
• CPC Class Codes: G06F 16/289 Object oriented databases
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

The invention is directed towards methods and apparatuses for archiving and unarchiving objects. Some embodiments of the invention archive and unarchive objects that have global and user settings in multi-user environments. To archive objects, these embodiments identify which object settings are global settings and which settings are user settings. They store the global settings in an archive, and then store the user settings in another archive. To unarchive each object, some embodiments identify the object'"'"'s settings in one or both archives. These embodiments instantiate the object, and retrieve its settings from the data archives and use the retrieved settings to define the values of the settings of the instantiated object. Some embodiments use key-value coding techniques to retrieve values and load values in an object. Key-value coding allows an archiving or unarchiving process to retrieve and load setting values for an object by using the setting names.

Claims

1. A method of archiving an already instantiated software object having at least two types of settings, wherein said types include global settings and user settings, said object used in a multi-user environment, the method comprising:

a) identifying global settings of the already instantiated software object;

b) storing the identified global settings in a first data archive;

c) identifying user settings of the already instantiated software object; and

d) storing the identified user settings in a second data archive.

2. The method of claim 1 wherein each setting includes a name and a value, wherein identifying each particular setting comprises:

a) identifying the name of the particular setting; and

b) identifying the value of the particular setting.

3. The method of claim 2, wherein the object conforms to a key-value coding protocol, and wherein identifying the value of the particular setting comprises using the setting'"'"'s name to retrieve the setting'"'"'s values from the object.

4. The method of claim 3 wherein using the setting'"'"'s name comprises:

determining whether the object has a particular method that has a name that at least partially matches the setting'"'"'s name;

if the object has the particular method, retrieving the setting'"'"'s value by calling the method.

5. The method of claim 4 wherein the object has a class description, wherein determining whether the object has the particular method comprises determining whether the class description has the particular method with the setting'"'"'s name as part of its name.

6. The method of claim 3 wherein using the setting'"'"'s name comprises:

determining whether the object has a particular instance variable that has a name that at least partially matches the setting'"'"'s name;

if the object has the particular instance variable, using the value of the instance variable as the setting'"'"'s value.

7. The method of claim 6 wherein the object has a class description, wherein determining whether the object has the particular instance variable comprises determining whether the class description has the particular instance variable with the setting'"'"'s name as part of its name.

8. The method of claim 1 wherein each setting includes a name and a value, wherein identifying settings of a first type comprises retrieving the names of the settings of said first type from the object.

9. The method of claim 8 wherein the object has a method that returns the names of the settings of said first type, wherein retrieving the names of the settings of said first type from the object comprises invoking the object'"'"'s method for returning the names of the settings of said first type.

10. The method of claim 1 wherein each setting includes a name and a value, wherein identifying settings of a first type comprises retrieving the names of the settings of said first type from an auxiliary data structure.

11. The method of claim 1 wherein the object'"'"'s settings include attributes.

12. The method of claim 1 wherein the object'"'"'s settings include relationships.

13. The method of claim 1, wherein the object is an object of an object oriented programming program.

14. For a multi-user application that runs on a computer, a method of archiving multiple software objects, wherein the objects are part of the application, the objects having global and user settings, the method comprising:

a) identifying a global setting of an object of the application, wherein each global setting is defined uniformly for all users;

b) storing the identified global setting in a global data archive for the application;

c) for a particular user, identifying a user setting of the object of the application, wherein each user setting of the object is defined particularly for each user; and

d) storing the identified user setting in a user data archive for the particular user, the user data archive separate from the global data archive.

15. The method of claim 14 wherein each setting includes a name and a value, wherein identifying each setting comprises:

a) identifying the name of the setting; and

b) identifying the value of the setting.

16. The method of claim 15,

wherein the object is coded according to a key-value coding protocol, and

wherein identifying the value of the setting comprises using the setting'"'"'s names to retrieve the setting'"'"'s values from the object.

17. The method of claim 15 wherein identifying the setting'"'"'s name comprises retrieving the setting'"'"'s name from the object.

18. The method of claim 15 wherein identifying the setting'"'"'s name comprises retrieving the setting'"'"'s name from an auxiliary data structure.

19. The method of claim 14 wherein the object'"'"'s settings include attributes.

20. The method of claim 14 wherein at least one of the object'"'"'s settings includes a relationship, said relationship having a relationship name and a relationship value, said value specifying another object for archiving.

21. The method of claim 20 wherein the object conforms to a key-value coding protocol, and wherein the method identifies the value of the relationship by using the relationship'"'"'s name to retrieve the relationship'"'"'s value from the object.

22. In a multi-user application that runs on a computer, a method of unarchiving objects of the application, said objects having settings stored in a set of data archives including a global data archive and a plurality of user data archives, the method comprising:

a) for a particular user, instantiating an object for which settings are stored in at least one of the data archives;

b) if the object has a setting in the global data archive, retrieving the object'"'"'s setting from the global data archive, said global data archive storing settings that are defined uniformly for all users;

c) if the object has a setting in a particular user data archive for the particular user, retrieving the object'"'"'s setting from the particular user data archive, the particular user data archive storing settings that are defined particularly for the particular user;

d) when a setting is retrieved from one of the data archives, using the retrieved setting to define a setting of the instantiated object; and

e) wherein said application and said archives are all on a single computer.

23. The method of claim 22, wherein the retrieved setting is an attribute, the attribute is defined by a key and a value, wherein the method uses the retrieved attribute'"'"'s value to define the setting of the instantiated object by:

determining whether the instantiated object has a particular method with a name that at least partially matches the retrieved attribute'"'"'s key;

if the instantiated object has the particular method, defining the value of an attribute of the instantiated object by calling the method and supplying the retrieved attribute value as an argument of the method.

24. The method of claim 22, wherein a retrieved setting is an attribute, the attribute is defined by a key and a value for that key, wherein the method uses the retrieved attribute'"'"'s value to define the setting of the instantiated object by:

determining whether the instantiated object has a particular instance variable that has a name that at least partially matches the retrieved attribute'"'"'s key;

if the instantiated object has the particular instance variable, defining the value of the instance variable to be the value of the retrieved attribute.

25. The method of claim 22, wherein the instantiated object is a first instantiated object, wherein a retrieved setting is a relationship, the relationship identifying a second object, the method further comprising instantiating the second object.

26. The method of claim 25, wherein the first instantiated object has a relationship corresponding to the retrieved relationship, each relationship specified by a key and a value for that key, the method further comprising defining the value of the first instantiated object'"'"'s key to refer to the instantiated second object.

27. The method of claim 26, wherein the method defines the value of the first instantiated object'"'"'s relationship key by:

determining whether the first instantiated object has a particular method with a name that at least partially matches the relationship key;

if the first instantiated object has the particular method, calling the method and supplying the location of the instantiated second object in memory as an argument.

28. The method of claim 26, wherein the method defines the value of the key by:

determining whether the first instantiated object has a particular instance variable with a name that at least partially matches the relationship key;

if the first instantiated object has the particular method, defining the value of this variable as the location of the instantiated second object in memory as an argument.