Added removeChildAssociation method to NodeService

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4706 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/node/db/NodeDaoService.java

@@ -189,6 +189,17 @@ public interface NodeDaoService
      */
     public ChildAssoc getChildAssoc(Node parentNode, QName assocTypeQName, String childName);
     
+    /**
+     * Deletes an explicit child association.
+     * 
+     * @return Returns <tt>true</tt> if the association was deleted, otherwise <tt>false</tt>
+     */
+    public boolean deleteChildAssoc(
+            final Node parentNode,
+            final Node childNode,
+            final QName assocTypeQName,
+            final QName qname);
+    
     /**
      * @param assoc the child association to remove
      * @param cascade true if the assoc deletions must cascade to primary child nodes