NEW ISSUE: Rules for Binding compatibility

[David Booz <booz@us.ibm.com>]

TARGET: All binding specs

DESCRIPTION:
This issue is derived from a concern raised by the SCA Policy TC (SPTC).
The only SCA spec which mentions binding compatibility is the Policy FW
spec.  The SPTC believes that policy compatibility is a required element of
binding compatibility, but the SPTC does not believe that it should be the
only means for determining compatibility.  Further, the SPTC believes that
the current binding compatibility rule (in the Policy FW spec) of strict
bindingType matching is overly constraining.   For example, suppose there
existed <binding.axis1/> and <binding.axis2/>.  These two bindings might be
interoperable/compatible.  If this is a desirable use case to support, then
how would a wire validator know this?

The referenced JIRA below mentions binding hierarchy, but that would be one
of several possible solutions.  The SPTC is not recommending a solution.
The SPTC believes that defining binding compatibility belongs with the SCA
Binding TC and/or the SCA Assembly TC.

Policy Issue 14: http://www.osoa.org/jira/browse/POLICY-14 is the root of
the discussion.  I mention it here because this is the issue under which
the SPTC is tracking the concern.  The contents of the JIRA itself are
potentially misleading.

PROPOSAL: none




Dave Booz
STSM, SCA and WebSphere Architecture
Co-Chair OASIS SCA-Policy TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093  or  8-295-6093
e-mail:booz@us.ibm.com
http://washome.austin.ibm.com/xwiki/bin/view/SCA2Team/WebHome