Minor refactoring

package it.inaf.oats.vospace;

import it.inaf.ia2.aa.data.User;

import it.inaf.oats.vospace.datamodel.collections.NodeCollectionsList;

import it.inaf.oats.vospace.persistence.CollectionsDAO;

import it.inaf.oats.vospace.datamodel.collections.NodeCollectionsWrapper;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

    // list collections owned by user

    @GetMapping(value = "/collections")

    public ResponseEntity<NodeCollectionsList> listCollections(

    public ResponseEntity<NodeCollectionsWrapper> listCollections(

            HttpServletRequest request, User principal) {

        LOG.debug("list collections called for user {}", principal.getName());

        NodeCollectionsList ncl = new NodeCollectionsList();

        NodeCollectionsWrapper ncl = new NodeCollectionsWrapper();

        ncl.setNodeCollections(

                collectionsService.listCollections(principal.getName()));