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.
UI/org.eclipse.birt.report.designer.ui.views/src/org/eclipse/birt/report/designer/internal/ui/views/attributes/provider/DataSetColumnBindingsFormHandleProvider.java
return new Object[]{};
	}
	public boolean canModify( Object element, String property )
	{
		return false;
	}
	public Object getValue( Object element, String property )
	{
		int index = Arrays.asList( columnNames ).indexOf( property );
		String columnText = getColumnText( element, index );
		return columnText;
	}
	public boolean modify( Object data, String property, Object value )
			throws Exception
	{
		/*
		 * if ( value == null ) return false; int index = Arrays.asList(
		 * columnNames ).indexOf( property ); switch ( index ) { case 0 : if ( !( (
		 * (ComputedColumnHandle) data ).getName( ) != null && (
		 * (ComputedColumnHandle) data ).getName( ) .equals( value.toString(
		 * ).trim( ) ) ) ) { ( (ComputedColumnHandle) data ).setName(
		 * value.toString( ) ); } break; case 1 : ( (ComputedColumnHandle) data
		 * ).setDataType( getDataType( value.toString( ) ) ); break; case 2 : if ( !( (
		 * (ComputedColumnHandle) data ).getExpression( ) != null && (
		 * (ComputedColumnHandle) data ).getExpression( ) .equals( (String)
		 * value ) ) ) { ( (ComputedColumnHandle) data ).setExpression(
		 * value.toString( ) ); String groupType = DEUtil.getGroupControlType(
		 * bindingObject ); if ( ExpressionUtil.hasAggregation( (