001    /*
002    // $Id: Quax.java 482 2012-01-05 23:27:27Z jhyde $
003    //
004    // Licensed to Julian Hyde under one or more contributor license
005    // agreements. See the NOTICE file distributed with this work for
006    // additional information regarding copyright ownership.
007    //
008    // Julian Hyde licenses this file to you under the Apache License,
009    // Version 2.0 (the "License"); you may not use this file except in
010    // compliance with the License. You may obtain a copy of the License at:
011    //
012    // http://www.apache.org/licenses/LICENSE-2.0
013    //
014    // Unless required by applicable law or agreed to in writing, software
015    // distributed under the License is distributed on an "AS IS" BASIS,
016    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017    // See the License for the specific language governing permissions and
018    // limitations under the License.
019    */
020    package org.olap4j.transform;
021    
022    import org.olap4j.CellSetAxis;
023    import org.olap4j.Position;
024    import org.olap4j.metadata.Member;
025    
026    /**
027     * Representation of member expressions on a query axis, derived from
028     * CellSetAxis objects.
029     *
030     * <p>Quaxes are used by MDX axis query transforms, to construct and use
031     * an internal tree-like representation of positions and members from the
032     * result CellSetAxis objects of a previous MDX query. This is needed
033     * for OLAP navigation operators like drill-down on a position.
034     *
035     * <p>Inspired from the JPivot Quax class.
036     *
037     * <p>NOTE: not exactly sure how to implement this, to be completed...
038     *
039     * @author etdub
040     * @version $Id: Quax.java 482 2012-01-05 23:27:27Z jhyde $
041     * @since Aug 7, 2008
042     */
043    public class Quax {
044        private final CellSetAxis cellSetAxis;
045    
046        private TreeNode<Member> memberTree;
047    
048        public Quax(CellSetAxis cellSetAxis) {
049            this.cellSetAxis = cellSetAxis;
050    
051            for (Position p : cellSetAxis.getPositions()) {
052                p.getMembers();
053            }
054        }
055    }
056    
057    // End Quax.java