Issue 43: javax.activation support

From: Marc Hadley <Marc.Hadley_at_Sun.COM>
Date: Wed, 18 Jun 2008 18:05:09 -0400

Issue 43[1] resulted from some internal feedback that it would be
useful to be able to use existing java activation framework (JAF)
DataContentHandlers with JAX-RS rather than force people to rewrite
them as MessageBodyReaders and Writers.

For example, given a resource method:

Foo getFoo(Bar bar) {...}

An implementation could make use of an existing handler to deserialize
the request along the following lines.

DataHandler dh = new DataHandler(dataSource);
DataFlavor df[] = dh.getTransferDataFlavors();
DataFlavor barDataFlavor = findMatchingFlavor(Bar.class, df);
Bar = (Bar)dh.getTransferData(barDataFlavor);

JAF isn't as flexible as JAX-RS entity providers (there's no access to
annotations, generic type, other headers etc) so I think it should be
supported as a fallback when a suitable MessageBodyReader or Writer
can't be found.

Thoughts, comments ?

Marc Hadley <marc.hadley at>
CTO Office, Sun Microsystems.