Added support to DbObjects to accept visitors
Added ValidatingVisitor to invoke suitable validator on each DbObject
Added NameValidator and NullValidator to operate on DbObject types
Added test suites
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31494 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
Instead of the Differences being passed around on their own, the DiffContext is able to provide more information -- at present just the Dialect. The dialect can be used to change the way database objects are validated or differenced.
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31466 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261