*
* @return true if successful otherwise false (e.c. jumpToNode referenced a
* catalog leaf or no catalog entry at all)
*/
private boolean jumpToNode(UserRequest ureq, long jumpToNode){
CatalogEntry cE=CatalogManager.getInstance().loadCatalogEntry(Long.valueOf(jumpToNode));
if(cE!=null){
Stack<CatalogEntry> stack=new Stack<CatalogEntry>();
// get elements, and add to filo stack
while(cE !=null){
stack.push(cE);
cE=cE.getParent();
}
// read filo stack
while ( !stack.isEmpty())
{
cE = stack.pop();