Right, that sounds like what I thought you would want: an additional
step in the factory-lookup process to try locating a provider through
the Layer of the caller if TCCL fails. I think the assumption in the
previous discussion was that a new method would be introduced to take a
Layer as an argument.
-Joe
On 3/24/2016 3:36 PM, David M. Lloyd wrote:
This is all for the case where the user is calling e.g.
javax.xml.stream.XMLInputFactory#newFactory() with no arguments. We
need some way to choose a specific non-JDK default implementation when
there is no service loader info on the TCCL. Using the Layer of the
caller of the newFactory() method would be an ideal solution from our
perspective.
On 03/24/2016 05:18 PM, huizhe wang wrote:
So specifying Layer is preferred solution. If a new method is needed
however, (similar situation to using the method with ClassLoader), that
would mean your users' applications are required to adapt to the new
API. Would you expect that would happen or would you still have existing
applications that can not be updated?
-Joe
On 3/24/2016 2:02 PM, David M. Lloyd wrote:
On 03/24/2016 03:54 PM, huizhe wang wrote:
In this discussion so far,
a) I see that you seemed to have successfully used the method with a
class loader as Daniel suggested. I assume that solved the issue
reported in JDK-8152063. Am I right, that you no longer have issue
with
using a proxy? Or
No, not solved yet, just in the process of prototyping but ran into a
road block with XMLReaderFactory.
b) you do need JAXP's supporting using a Layer as the context in order
to solve your issue completely?
I think this should be considered the best solution to the problem.
c) On org.xml.sax.helpers.XMLReaderFactory, as Alan and Daniel
said, yes
I'm working with the SAX project to hopefully get a new release out
that
would conform to the ServiceLoader spec. I'm also suggesting a new
method that takes a ClassLoader that would be useful if (a) worked
for you.
We have some more testing to do before I can say whether this works or
does not work. But either way it is a rather non-optimal solution,
and if I can avoid using a proxy layer, I would much prefer to do so.
Thanks for your response.
