Saxon

The class JPConverter, which handles conversion of Java values to XDM, contains code that recognises a number of Java classes and applies custom conversion to them, including:

URI, URL, Date. Instant, LocalDateTime, ZonedDateTime, OffsetDateTime, LocalDate

The documentation at http://www.saxonica.com/documentation/index.html#!extensibility/functions/function-result makes no mention of this.

Moreover, the JAXP information at http://www.saxonica.com/documentation/index.html#!using-xsl/embedding/jaxp-transformation doesn't link to this page to explain that these conversions are applied when using Transformer.setParameter()

In relation to the JAXP XPath API:

(a) At http://www.saxonica.com/documentation/index.html#!xpath-api/jaxp-xpath/context-node there is no mention that the context item does not have to be a node, and that these Java-to-XDM conversion rules are applied

(b) There is no mention that the JAXP VariableResolver can return Java values which are converted to XDM values using these conversion rules.