MT - fix delete tenant/store to avoid FK constraint violation (for new install)

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8569 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/domain/hibernate/Store.hbm.xml

@@ -24,7 +24,7 @@
       <!-- forward assoc to root node -->
       <many-to-one
             name="rootNode"
-            not-null="true"
+            not-null="false"
             foreign-key="fk_alf_store_rn"
             lazy="proxy"
             class="org.alfresco.repo.domain.hibernate.NodeImpl"

source/java/org/alfresco/repo/node/db/hibernate/HibernateNodeDaoServiceImpl.java

@@ -452,6 +452,9 @@ public class HibernateNodeDaoServiceImpl extends HibernateDaoSupport implements
         list = (List<NodeImpl>)query.list();
         getHibernateTemplate().deleteAll(list);
         
+        store.setRootNode(null);
+        getHibernateTemplate().update(store);
+        
         // delete root node and store
         getHibernateTemplate().delete(rootNode);
         getHibernateTemplate().delete(store);