System and method for generating an XPath expression

• US 20070208769A1
• Filed: 03/03/2006
• Published: 09/06/2007
• Est. Priority Date: 03/03/2006
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Peterson, Trenten, Singh, Hardeep, Devlin, Karen Stone, Boehm, Christoph
• Application Number:
  US11/368,292
• Publication Number:
  US 20070208769A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/832 Query formulation

Abstract

An XPath generation system generates a default XPath expression (XPath) from a selected destination node. The system provides to a user the default XPath with modification options. The system modifies the default XPath according to selected modification options to generate a resulting XPath. If none of the modifications options are selected, the system selects the default XPath as the resulting XPath. The modification options comprise selecting a different node as a destination node of the XPath, selecting a context node as a starting node of the XPath, selecting an axis for specifying a path between the context node and the destination node, specifying selection of a node by name or by type, specifying selection of any node, and specifying return of only unique values of the resulting XPath.

Claims

1. A processor-implemented method of generating an XPath expression, the method comprising:

generating a default XPath expression from a node in a tree, wherein the node is selected as a destination node of the XPath expression;

providing the default XPath expression with a plurality of modification options for modifying the default XPath expression;

wherein if at least one of the modification options is selected, modifying the default XPath expression according to the selected modification options to generate a resulting XPath expression; and

wherein if none of the modifications options is selected, selecting the default XPath expression as the resulting XPath expression.

2. The method of claim 1, wherein the resulting XPath expression is integrated into an XML query.

3. The method of claim 1, wherein the tree represents an XML schema.

4. The method of claim 1, wherein the tree represents a schema in a semi-structured language.

5. The method of claim 1, further comprising selecting the modification options by selecting a different node as a destination node of the XPath expression.

6. The method of claim 1, further comprising selecting the modification options by selecting a context node as a starting node of the XPath expression.

7. The method of claim 1, further comprising selecting the modification options by selecting an axis for specifying a path between the context node and the destination node.

8. The method of claim 1, further comprising selecting the modification options by specifying selection of a node by name.

9. The method of claim 1, further comprising selecting the modification options by specifying selection of a node by type.

10. The method of claim 1, further comprising selecting the modification options by specifying a selection of any node, and specifying a selection of distinct values to return unique values of the resulting XPath expression.

11. A computer program product having a plurality of program codes that are stored on a computer-useable medium for generating an XPath expression, the computer program product comprising:

a program code for generating a default XPath expression from a node in a tree, wherein the node is selected as a destination node of the XPath expression;

a program code for providing the default XPath expression with a plurality of modification options for modifying the default XPath expression;

wherein if at least one of the modification options is selected, a program code modifies the default XPath expression according to the selected modification options to generate a resulting XPath expression; and

wherein if none of the modifications options is selected, a program code selects the default XPath expression as the resulting XPath expression.

12. The computer program product of claim 11, wherein the resulting XPath expression is integrated into an XML query.

13. The computer program product of claim 11, wherein the tree represents an XML schema.

14. The computer program product of claim 11, wherein the tree represents a schema in a semi-structured language.

15. The computer program product of claim 11, further comprising a program code for selecting the modification options by any one of:

selecting a different node as a destination node of the XPath expression;

selecting a context node as a starting node of the XPath expression;

selecting an axis for specifying a path between the context node and the destination node;

specifying selection of a node by name; and

specifying selection of a node by type.

17. The system of claim 11, wherein the resulting XPath expression is integrated into an XML query.

18. The system of claim 11, wherein the tree represents an XML schema.

19. The system of claim 11, wherein the tree represents a schema in a semi-structured language.

20. The system of claim 11, wherein the XPath user interface controller selects the modification options by any one of:

selecting a different node as a destination node of the XPath expression;

selecting a context node as a starting node of the XPath expression;

selecting an axis for specifying a path between the context node and the destination node;

specifying selection of a node by name; and

specifying selection of a node by type.

16. A processor-implemented system having a plurality of program codes that are stored on a computer-useable medium for generating an XPath expression, the system comprising:

an Xpath engine for generating a default XPath expression from a node in a tree, wherein the node is selected as a destination node of the XPath expression;

an XPath user interface controller for providing the default XPath expression with a plurality of modification options for modifying the default XPath expression;

wherein if at least one of the modification options is selected, an XPath engine modifies the default XPath expression according to the selected modification options to generate a resulting XPath expression; and

wherein if none of the modifications options is selected, the XPath engine selects the default XPath expression as the resulting XPath expression.