Bug 190207 Integrate Aggregation builder with charts
Charts should be able to use aggregates in their databinding definition. The UI is missing the "Add Aggregation..." button in the chart databinding dialog.
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
}
		return exps;
	}
	
		/**
	 * Gets all column bindings from handle and its container
	 * 
	 * @param itemHandle
	 *            handle
	 * @return Iterator of all bindings
	 */
	static Iterator getColumnDataBindings( ReportItemHandle itemHandle )
	{
		if ( itemHandle.getDataSet( ) != null )
		{
			return itemHandle.columnBindingsIterator( );
		}
		DesignElementHandle handle = DEUtil.getBindingHolder( itemHandle );
		if ( handle instanceof ReportItemHandle )
		{
			ArrayList list = new ArrayList( );
			Iterator i = ( (ReportItemHandle) handle ).columnBindingsIterator( );
			while ( i.hasNext( ) )
			{
				list.add( i.next( ) );
			}
			i = itemHandle.columnBindingsIterator( );
			while ( i.hasNext( ) )
			{
				list.add( i.next( ) );