SCA

For me Enterprise integration domain has been full of intresting thing, this time it is Service Component Architecture(SCA):

There are few hand-on SCA for Java:

Apache Tuscany beta version 2.0 had some issues so I tried 1.6

http://tuscany.apache.org/java-sca-documentation-menu.html
http://tuscany.apache.org/build-your-first-web-services-with-tuscany.html
http://tuscany.apache.org/getting-started-with-tuscany.html
http://biemond.blogspot.in/2009/11/working-with-apache-tuscany-java-sca.html

Oracle SOA uses SCA assembly model:

http://tuscany.apache.org/sca-java-architecture-guide.html

SCA provides specifications of:

Assembly model specification
Component implementation specifications
Binding specifications
Policy framework specification