import javax.jcr.RepositoryFactory;
import javax.jcr.Session;
import javax.jcr.nodetype.NodeType;
-import javax.jcr.query.Query;
-import javax.jcr.query.QueryResult;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.Comparator;
import java.util.HashMap;
-import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;