SAXONICA

Saxon Documentation
Full Contents
About Saxon
Changes in this Release
| Version 8.9 (2007-02-12)
| Version 8.8 (2006-09-05)
| Version 8.7.3 (2006-06-13)
| Version 8.7.2 (2006-04-19)
| Version 8.7.1 (2006-04-13)
| Version 8.7 (2006-02-24)
| Version 8.6.1 (24 November 2005)
| Version 8.6 (3 November 2005)
| Version 8.5.1 (26 August 2005)
| Version 8.5 (2 August 2005)
| Version 8.4 (4 April 2005)
| Version 8.3 (11 February 2005)
| Version 8.2 (21 December 2004)
| Version 8.1.1 (8 October 2004)
| Version 8.1 (24 September 2004)
» | Version 8.0 (1 June 2004)
Conditions of Use
Using XSLT 2.0
Using XQuery
Handling Source Documents
XML Schema Processing
XPath API for Java
Saxon on .NET
Extensibility
Saxon Extensions
Sample Saxon Applications
The Saxon SQL Extension
XSLT Elements
XPath 2.0 Expression Syntax
Function Library
Standards Conformance

# Changes to extension functions

A new extension function `discard-document` has been added. This takes a document node as its argument and returns the same document node as its result. The function causes the document to be removed from Saxon's internal document pool, which enables the Java garbage collector to release the memory occupied by the document when it is no longer required. The drawback is that if the same document is loaded again during the same transformation, it will be reparsed from the source text, and different node identifiers will be allocated. The function returns the document node that was supplied as an argument, allowing it to be used in a call such as `select="saxon:discard-document(document('a.xml'))"`.

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