| XPointer Framework | |
| Native name | XPointer Framework |
|---|---|
| Status | W3C Recommendation |
| Year started | 1997 |
| First published | April 6, 1997[1][2] |
| Latest version | XPointer Framework Recommendation[3] March 25, 2003[3] |
| Organization | W3C |
| Committee | W3C XML Linking Working Group[4] |
| Editors |
|
| Base standards | XML, XPath |
| Website | www |
XPointer is a system for addressing components of XML-based Internet media. It is divided among four specifications: a "framework" that forms the basis for identifying XML fragments, a positional element addressing scheme, a scheme for namespaces, and a scheme for XPath-based addressing. XPointer Framework is a W3C recommendation since March 2003.[3][5]
The XPointer language is designed to address structural aspects of XML, including text content and other information objects created as a result of parsing the document. Thus, it could be used to point to a section of a document highlighted by a user through a mouse drag action.
During development, and until 2016, XPointer was covered by a royalty-free technology patent held by Sun Microsystems.[6]
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Transcription
Positional Element Addressing
The element() scheme[7] introduces positional addressing of child elements. This is similar to a simple XPath address, but subsequent steps can only be numbers representing the position of a descendant relative to its branch on the tree.
For instance, given the following fragment:
<foobar id="foo">
<bar/>
<baz>
<bom a="1"/>
</baz>
<bom a="2"/>
</foobar>
results as the following examples:
xpointer(id("foo")) => foobar
xpointer(/foobar/1) => bar
xpointer(//bom) => bom (a=1), bom (a=2)
element(/1/2/1) => bom (a=1) (/1 descend into first element (foobar),
/2 descend into second child element (baz),
/1 select first child element (bom))
See also
References
- ^ "XPointer Framework Publication History - W3C". W3C. n.d. Retrieved 2021-04-08.
- ^ Bray, Tim; DeRose, Steve, eds. (1997-04-06). "Extensible Markup Language (XML): Part 2. Linking Version 1.0". W3C. Retrieved 2021-04-08.
- ^ a b c d Grosso, Paul; Maler, Eve; Marsh, Jonathan; Walsh, Norman, eds. (2003-03-25). "XPointer Framework". W3C. W3C. Retrieved 2021-04-08.
- ^ "W3C XML Pointer, XML Base and XML Linking". W3C. 2000. Archived from the original on 2021-03-25. Retrieved 2021-04-08.
- ^ Bikakis N.; Tsinaraki C.; Gioldasis N.; Stavrakantonakis I.; Christodoulakis S. "The XML and Semantic Web Worlds: Technologies, Interoperability and Integration. A survey of the State of the Art" (PDF). Archived from the original (PDF) on 2019-10-26. Retrieved 2021-04-08.
- ^ Daniel, Ron (2002-06-10). "XPointer Patent Statements". www.w3.org. Retrieved 2021-04-08.
- ^ Grosso, Paul; Maler, Eve; Marsh, Jonathan; Walsh, Norman, eds. (2003-03-23). "XPointer element() Scheme". W3C. W3C. Retrieved 2021-04-08.
External links
- XPointer Framework
- Namespacing
- Path based addressing
- XPointer patent terms and conditions
- Open source implementation (CognitiveWeb)
- GPL License .NET implementation (XInclude.NET)
- Method and system for implementing hypertext scroll attributes on Google Patents, expired 2016-02-01
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This page was last edited on 4 July 2022, at 23:57