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
* (ComputedColumnHandle) data ).getExpression( ) ) ) { if (
		 * groupType.equals( DEUtil.TYPE_GROUP_GROUP ) ) (
		 * (ComputedColumnHandle) data ).setAggregrateOn( ( (GroupHandle)
		 * DEUtil.getGroups( bindingObject ) .get( 0 ) ).getName( ) ); else if (
		 * groupType.equals( DEUtil.TYPE_GROUP_LISTING ) ) (
		 * (ComputedColumnHandle) data ).setAggregrateOn( null ); } if (
		 * !ExpressionUtil.hasAggregation( ( (ComputedColumnHandle) data
		 * ).getExpression( ) ) || groupType.equals( DEUtil.TYPE_GROUP_NONE ) ) { (
		 * (ComputedColumnHandle) data ).setAggregrateOn( null ); } } break;
		 * case 3 : if ( ALL.equals( value.toString( ) ) ) (
		 * (ComputedColumnHandle) data ).setAggregrateOn( null ); else (
		 * (ComputedColumnHandle) data ).setAggregrateOn( value.toString( ) );
		 * break; default : break; }
		 */
		return false;
	}
	private String getDataType( String value )
	{
		for ( int i = 0; i < DATA_TYPE_CHOICES.length; i++ )
		{
			IChoice choice = DATA_TYPE_CHOICES[i];
			if ( choice.getDisplayName( ).equals( value ) )
			{
				return choice.getName( );
			}
		}
		return value;
	}
	public boolean needRefreshed( NotificationEvent event )
	{