Open-source java XSLT 2.0 implementation? [closed]

Yes, I'm answering my own question from 2.5 years ago:

I haven't tried it yet, but I just stumbled upon Eclipse PsychoPath, which is (according to the docs) a XPath 2.0 XML Schema Aware processor that passes 96% of the XPath 2.0 test suite (version 1.1M1).

The only one is Saxon-HE:

Saxon-HE

The W3C hosts an online version of it for testing:

W3C Jigsaw XSLT 2.0 Service

And there is JSFiddle like version as well:

xsltransform.net

And the Frameless project hosts a JavaScript version of it:

XSLT Fiddle

There's also an App Engine project which uses it:

XSLT App Engine Test Harness

Other than that, there's an incomplete Xerces extension which implements XPath 2.0:

Xerces XPath 2.0 Extension

An Eclipse extension which implements XPath 2.0:

WTP XPath2.0 Processor

An incomplete Xalan-J branch which partially implements XSLT 2.0:

Some prototype work for XSLT 2.0 support in the Xalan-J Interpretive processor went on in 2003, but then trailed off. That prototype work is still available on the xslt20 branch http://svn.apache.org/repos/asf/xalan/java/branches/xslt20/, but since then nobdy has stepped forward to carry on that initial prototyping, and the Xalan PMC hasn't put in place any plans for XSLT 2.0 support.

As well as a server-side implementation of Saxon-CE which can run on Nashorn/Avatar.js:

xslty

References

• Running Node.js on Java 8 Nashorn with Avatar.js on Windows "no avatar-js in java.library.path"

• Re: Xalan-J XSLT 2.0 status

• org.eclipse.wst.xml.xpath2.processor.sdk.feature

• Nashorn - The Combined Power of Java and JavaScript in JDK 8

• Nodyn Completion of the Node.js API

• Saxonica Product Feature Matrix

For the archive, there's also AltovaXML, the free-as-in-beer, schema-aware XSLT 2.0 engine used in XMLSpy etc.

Unfortunately, like XMLSpy, it's Windows only.