TRANSLATING LATE BOUND LINQ EXPRESSIONS INTO DATABASE QUERIES

• US 20080263063A1
• Filed: 11/14/2007
• Published: 10/23/2008
• Est. Priority Date: 04/20/2007
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Vick, Paul A., Silver, Amanda K., Pather, Shyamalan, Conrad, Andrew J., Meek, Colin Joseph, Sceppa, David E., Derstadt, Jeffrey M., Perry, Carl Y.
• Granted Patent: US 8,255,883 B2
• Time in Patent Office: Days
• US Class Current: 707/100
• CPC Class Codes: G06F 9/45516 Runtime code conversion or optimisation

Abstract

There is alteration of a late-bound expression produced by a compiler into an early-bound structure. Alteration of the late-bound expression can occur at runtime and a visitor pattern can be used to create the alteration. In one instance, a conversion from late-bound to early-bound takes place through replacing a late-bound property with a statically typed call. The early-bound structure can translate into an expression tree to enable an implementation of a store specific query operated upon storage.

Claims

1. A system, comprising:

an obtainment component that collects a late-bound structure; and

an alteration component that converts a late-bound structure into an early-bound structure.

2. The system of claim 1, further comprising a change component that transforms at least a portion of the early-bound structure to a strong type.

3. The system of claim 1, wherein the alteration component operates at runtime.

4. The system of claim 1, further comprising an artificial intelligence component that makes a determination or inference about conversion of the late-bound structure into the early-bound structure.

5. The system of claim 1, further comprising an analysis component that evaluates the collected late-bound structure.

6. The system of claim 5, wherein the analysis component uses a visitor pattern to convert the collected late-bound structure.

7. The system of claim 1, further comprising modification component that arranges the early-bound structure into a tree.

8. The system of claim 1, further comprising a creation component that generates a store-specific query based upon the early-bound structure.

9. A method, comprising:

changing a method call from late-bound to early-bound; and

generating at least one strongly typed object from the early-bound method call.

10. The method of claim 9, further comprising examining an object associated with the method call.

11. The method of claim 10, wherein examination of the object associated with the method call is performed through utilization of a visitor pattern.

12. The method of claim 9, further comprising determining a return type of the examined object.

13. The method of claim 9, further comprising receiving a late-bound method call from a compiler.

14. The method of claim 9, further comprising building a store specific query from the early-bound method call.

15. The method of claim 9, further comprising altering the early-bound method call into a tree.

16. A system, comprising:

means for translating a late-bound expression into an early-bound expression; and

means for generating a store specific query based upon the early-bound expression.

17. The system of claim 16, further comprising means for analyzing the late-bound expression.

18. The system of claim 16, further comprising means for passing the early-bound expression to an entity implementation.

19. The system of claim 16, further comprising means for modifying the early-bound query to a tree.

20. The system of 16, further comprising means for changing source code into the late-bound expression.