JAXP interface (transformation, XPath, schema processing)

It is now possible to set the Configuration used by a TransformerFactory or DocumentBuilderFactory using the setAttribute() method with the attribute name FeatureKeys.CONFIGURATION. By reading this attribute on a TransformerFactory, and setting it on a DocumentBuilderFactory, it is possible to ensure that all documents use the same Configuration without introducing any compile-time dependencies on Saxon.

A wider range of JAXP-defined options is now supported on the DocumentBuilderFactory interface. For example, a request to perform XInclude processing is now accepted (though it will only work if the underlying XML parser is Xerces).

It is now possible to provide a user-written URI resolver for use by the XSLT unparsed-text() function. This must be an instance of net.sf.saxon.trans.UnparsedTextURIResolver, and it is set as a property of the Controller object (Saxon's implementation of the JAXP Transformer). One use case for this feature is to allow access to unparsed text files to be disabled when an untrusted stylesheet is run.

xsl:message

There have been some changes to the handling of xsl:message output in XSLT:

• The class nominated to receive xsl:message output is no longer required to be an instance of Emitter, it can now be any instance of net.sf.saxon.event.Receiver (of which Emitter is a subclass, so existing code should still work). The sequence of calls to this Receiver has been clarified: there is a single open() call at the start of the transformation, and a single close() call at the end; and each evaluation of an xsl:message instruction starts with a startDocument() call and ends with endDocument(). The startDocument() event has a properties argument indicating whether terminate="yes" was specified, and the locationId on calls such as startElement() and characters() can be used to identify the location in the stylesheet where the message data originated (this is achieved by passing the supplied locationId in a call to getPipelineConfiguration().getLocator().getSystemId(locationId), or to getLineNumber() on the same object).
• A new class net.sf.saxon.event.MessageWarner can be selected for receiving message output; this class follows the JAXP specification by passing the message output to the warning() method of the current ErrorListener, or to the error() method if terminate="yes" is specified. For backwards compatibility reasons this has not been made the default behavior.