Method and system to automatically regenerate software code

• US 20050154765A1
• Filed: 12/08/2004
• Published: 07/14/2005
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: PayPal, Inc. (PayPal Holdings, Inc.)
• Original Assignee: eBay Inc.
• Inventors: Seitz, Greg, Kasten, Christopher J.
• Granted Patent: US 7,779,386 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 12/0808 with cache invalidating means G06F12/0815 takes precedence
• CPC Class Codes: G06F 12/0875 with dedicated cache, e.g. instruction or stack
• CPC Class Codes: G06F 12/12 Replacement control
• CPC Class Codes: G06F 12/128 adapted to multidimensional cache systems, e.g. set-associative, multicache, multiset or multilevel
• CPC Class Codes: G06F 16/2272 Management thereof
• CPC Class Codes: G06F 16/2455 Query execution
• CPC Class Codes: G06F 16/24552 Database cache management
• CPC Class Codes: G06F 16/2471 Distributed queries
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: G06F 2212/452 Instruction code
• CPC Class Codes: G06F 2212/465 Structured object, e.g. database record
• CPC Class Codes: G06F 9/5016 the resource being the memory
• CPC Class Codes: G06F 9/54 Interprogram communication
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99944 Object-oriented database structure

Abstract

According to a second aspect there is provided a method and system to automatically regenerate software for an object to relational mapping system. The system automatically regenerates a first set of classes. For each class, the system reads class information; reads meta-data based on the class information; and automatically regenerates the class based on the meta-data without overwriting associated custom code. The first set of classes includes base code that is associated with the custom code. The first set of classes and the base code are utilized by the object to relational mapping system to enable an application program to access data that is persistently stored in a database.

Claims

1. A method to automatically regenerate software for an object to relational mapping system, the method including:

automatically regenerating a first plurality of classes, iteratively for each class,

reading class information;

reading meta-data based on the class information; and

automatically regenerating the class based on the meta-data, the first plurality of classes to include base code that is associated with custom code, the first plurality of classes to be regenerated without over writing the custom code, the first plurality of classes and the base code utilized by the object to relational mapping system to enable an application program to access data that is persistently stored in a database.

2. The method of claim 1, wherein the custom code overrides the base code.

3. The method of claim 2, wherein the custom code augments the base code.

4. The method of claim 1, wherein the custom code is included in a second plurality of classes, the second plurality of classes to respectively inherit from the first plurality of classes.

5. The method of claim 1, wherein the custom code includes code that is not included in the base code.

6. The method of claim 1, wherein automatically regenerating the class includes adding a previously undefined attribute to the class.

7. The method of claim 1, wherein automatically regenerating the class includes removing a previously defined attribute from the class.

8. The method of claim 1, wherein the configuration file includes an SQL statement that includes a tag that may by dynamically substituted for a value.

9. The method of claim 1, wherein the first plurality of classes and the second plurality of classes each include a class that is utilized as an interface for the data object.

10. The method of claim 1, wherein the first plurality of classes and the second plurality of classes each include a class that is utilized to prevent direct access to the data.

11. The method of claim 1, wherein the first plurality of classes includes a first class that defines a plurality of read sets that determine the columns that are requested from the database and populated to the instance of the data object class.

12. The method of claim 1, wherein the first plurality of classes includes a first class that defines at least one of a plurality of update sets and insert sets that determine the attributes are persisted to the database from a data object class.

13. The method of claim 1, wherein the first plurality of classes includes a first class that defines a plurality of sets of hints.

14. The method of claim 1, wherein the first plurality of classes includes a first class that includes meta-data to access a subobject.

15. The method of claim 1, wherein the first plurality of classes includes at least one class that supports hierarchical relationships between data object types.

16. The method of claim 1, wherein the first plurality of classes includes a first class to automatically retrieve data in a single request to the database to construct at least one data object in an object graph.

17. The method of claim 1, wherein the first plurality of classes includes at least one class to perform at least one operation from a group of operations including an update operation, an insert operation, a delete operation for at least one data object in an object graph in a single database request.

18. A system to automatically regenerate software for an object to relational mapping system, the system including:

a read module and a class generator to automatically regenerate a first plurality of classes, iteratively for each class,

the read module to read class information, the read module to read meta-data based on the class information; and

the class generator module to automatically regenerate the class based on the meta-data, the first plurality of classes to include base code that is associated with custom code, the first plurality of classes to be regenerated without over writing the custom code, the first plurality of classes and the base code utilized by the object to relational mapping system to enable an application program to access data that is persistently stored in a database.

19. The system of claim 18, wherein the custom code overrides the base code.

20. The system of claim 19, wherein the custom code augments the base code.

21. The system of claim 19, wherein the custom code is included in a second plurality of classes, the second plurality of classes to respectively inherit from the first plurality of classes.

22. The system of claim 18, wherein the custom code includes a method that is not included in the base code.

23. The system of claim 18, wherein the class generator module automatically regenerates the class to include the addition of a previously undefined attribute to the class.

24. The system of claim 18, wherein the class generator module automatically regenerates the class to remove a previously defined attribute from the class.

25. The system of claim 18, wherein the configuration file includes an SQL statement that includes a tag that may by dynamically substituted for a value.

26. The system of claim 18, wherein the first plurality of classes and the second plurality of classes each include a class that is utilized as an interface for the data object.

27. The system of claim 18, wherein the first plurality of classes and the second plurality of classes each include a class that is utilized to prevent direct access to the data.

28. The system of claim 18, wherein the first plurality of classes includes a first class that defines a plurality of read sets that determine the columns that are requested from the database and populated to the instance of the data object class.

29. The system of claim 18, wherein the first plurality of classes includes a first class that defines at least one of a plurality of update sets and insert sets that determine the attributes that are persisted to the database from a data object class.

30. The system of claim 18, wherein the first plurality of classes includes a first class that defines a plurality of sets of hints.

31. The system of claim 18, wherein the first plurality of classes includes at least one class that includes meta-data to access a subobject.

32. The system of claim 18, wherein the first plurality of classes includes at least one class that supports hierarchical relationships between data object types.

33. The system of claim 18, wherein the first plurality of classes includes a first class to automatically retrieve data to construct at least one data object in an object graph.

34. The system of claim 18, wherein the first plurality of classes includes at least one class to perform at least one operation from a group of operations including an update operation, an insert operation, a delete operation for at least one data object in an object graph in a single database request.

35. A machine readable medium storing a set of instructions that, when executed by a machine, cause the machine to:

automatically regenerate a first plurality of classes, iteratively for each class,

read class information;

read meta-data based on the class information; and

automatically regenerate the class based on the meta-data, the first plurality of classes to include base code that is associated with custom code, the first plurality of classes to be regenerated without overwriting the base code, the first plurality of classes and the base code utilized by the object to relational mapping system to enable an application program to access data that is persistently stored in a database.

36. A system to automatically regenerate software for an object to relational mapping system, the system including:

a first means and a second means to automatically regenerate a first plurality of classes, iteratively for each class,

the first means to read class information, the first means to read meta-data based on the class information; and

the second means to automatically regenerate the class based on the meta-data, the first plurality of classes to include base code that is associated with custom code, the first plurality of classes to be regenerated without overwriting the base code, the first plurality of classes and the base code utilized by the object to relational mapping system to enable an application program to access data that is persistently stored in a database.