org.eclipse.osbp.xtext.datamart.common/src/org/eclipse/osbp/xtext/datamart/common/sql/SqlCellSetAxis.java

/**
 *                                                                            
 *  Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  All rights reserved. This program and the accompanying materials           
 *  are made available under the terms of the Eclipse Public License v1.0       
 *  which accompanies this distribution, and is available at                  
 *  http://www.eclipse.org/legal/epl-v10.html                                 
 *                                                                            
 *  Contributors:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 */
 package org.eclipse.osbp.xtext.datamart.common.sql;

import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;

import org.olap4j.Axis;
import org.olap4j.CellSet;
import org.olap4j.CellSetAxis;
import org.olap4j.CellSetAxisMetaData;
import org.olap4j.Position;
import org.olap4j.metadata.Hierarchy;

public class SqlCellSetAxis implements CellSetAxis {

	private final CellSet fCellSet;
	private final Axis fAxis;
	private final List<Position> fPositions;
	private Hierarchy fHierarchy;
	
	public Hierarchy getHierarchy() {
		return fHierarchy;
	}

	public SqlCellSetAxis(CellSet cellSet, int axisOrdinal) {
		fCellSet = cellSet;
		fAxis = Axis.Factory.forOrdinal(axisOrdinal);
		fPositions = new ArrayList<Position>();
		fHierarchy = null;
	}
	
	public SqlCellSetAxis(CellSet cellSet, int axisOrdinal, String type, String name, String label) {
		this(cellSet, axisOrdinal);
		addPosition(axisOrdinal, 0, type, name, label);
	}

	public void addPosition(int axis, int ordinal, String type, String name, String label) {
		for (Position pos : fPositions){
			if (pos.getOrdinal() == ordinal) {
				if (axis == 1) { // the row values must be qualified for later decomposition
					if (pos.getMembers().size() == 0) {
						pos.getMembers().add(new SqlMember(type, "["+name+"]", label, fHierarchy));
					}
					else {
						((SqlMember)pos.getMembers().get(0)).appendLevel(type, name);
					}
				}
				else {
					pos.getMembers().add(new SqlMember(type, name, label, fHierarchy));
				}
				return;
			}
		}
		if (fHierarchy == null) {
			fHierarchy = new SqlHierarchy();
		}
		fPositions.add(new SqlPosition(ordinal, type, name, label, fHierarchy));
	}
	
	@Override
	public Axis getAxisOrdinal() {
		return fAxis;
	}

	@Override
	public CellSet getCellSet() {
		return fCellSet;
	}

	@Override
	public int getPositionCount() {
		return fPositions.size();
	}

	@Override
	public List<Position> getPositions() {
		return fPositions;
	}

	@Override
	public ListIterator<Position> iterator() {
		return getPositions().listIterator();
	}
	
	/* ============== NOT NEEDED NOW ============== */
	
	@Override
	public CellSetAxisMetaData getAxisMetaData() {
		// TODO Auto-generated method stub
		return null;
	}

}