Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ElementFactory.java
* @return a handle to the dimension element
	 */
	public OdaDimensionHandle newOdaDimension( String name )
	{
		
		OdaDimension element = new OdaDimension( name );
		module.makeUniqueName( element );
		OdaHierarchy hierarchy = new OdaHierarchy( );
		element.add( module, hierarchy, IDimensionModel.HIERARCHIES_PROP );
		module.makeUniqueName( hierarchy );
		return element.handle( module );
	}
	/**
	 * Creates a new hierarchy element. The name is required. If the
	 * <code>name</code> is null, we will make a unique name for it.
	 * 
	 * @param name
	 *            hierarchy name
	 * @return a handle to the hierarchy element
	 */
	public OdaHierarchyHandle newOdaHierarchy( String name )
	{
		OdaHierarchy element = new OdaHierarchy( name );
		module.makeUniqueName( element );
		return element.handle( module );
	}
	/**
	 * Creates a new level element. The name is required. If the
	 * <code>name</code> is null, we will make a unique name for it.
	 *