Bug 214577 Support cube filter in chart
For chart consuming cube, need to support filtering on categories or series, possibly on values if time allows. The UI is similar to the filter dialog for cross tab, but there should be no measure or dimension concepts in chart's dialog.
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
{
	private ExtendedItemHandle itemHandle;
	private static final String OPTION_NONE = Messages.getString( "ReportDataServiceProvider.Option.None" ); 
	/**
	 * This flag indicates whether the error is found when fetching data. This
	 * is to help reduce invalid query.
	 */
	private boolean isErrorFound = false;
	private IProject project = null;
	public ReportDataServiceProvider( ExtendedItemHandle itemHandle )
	{
		super( );
		this.itemHandle = itemHandle;
		project = UIUtil.getCurrentProject( );
	}
	private ModuleHandle getReportDesignHandle( )
	{
		return itemHandle.getModuleHandle( );
	}
	public String[] getAllDataSets( )