001    /*
002    // $Id: //open/mondrian-release/3.0/src/main/mondrian/rolap/GroupingSetsCollector.java#2 $
003    // This software is subject to the terms of the Common Public License
004    // Agreement, available at the following URL:
005    // http://www.opensource.org/licenses/cpl.html.
006    // Copyright (C) 2004-2007 Julian Hyde and others
007    // All Rights Reserved.
008    // You must accept the terms of that agreement to use this software.
009    */
010    package mondrian.rolap;
011    
012    import mondrian.rolap.agg.GroupingSet;
013    
014    import java.util.ArrayList;
015    import java.util.List;
016    
017    /**
018     * <p>The <code>GroupingSetsCollector</code> collects the GroupinpSets and pass
019     * the consolidated list to form group by grouping sets sql</p>
020     *
021     * @author Thiyagu
022     * @version $Id: //open/mondrian-release/3.0/src/main/mondrian/rolap/GroupingSetsCollector.java#2 $
023     * @since 06-Jun-2007
024     */
025    public class GroupingSetsCollector {
026    
027        private final boolean useGroupingSets;
028    
029        private ArrayList<GroupingSet> groupingSets = new ArrayList<GroupingSet>();
030    
031        public GroupingSetsCollector(boolean useGroupingSets) {
032            this.useGroupingSets = useGroupingSets;
033        }
034    
035        public boolean useGroupingSets() {
036            return useGroupingSets;
037        }
038    
039        public void add(GroupingSet aggInfo) {
040            assert groupingSets.isEmpty() ||
041                groupingSets.get(0).getColumns().length >= aggInfo.getColumns().length;
042            groupingSets.add(aggInfo);
043        }
044    
045        public List<GroupingSet> getGroupingSets() {
046            return groupingSets;
047        }
048    }