Bug 198504 The same name aggregation should be hint in dialog[0001]
Description: The same name aggregation should be hint in dialog[0001] Step: 1.New a datasource, dataset, table and binding the dataset. 2.New a aggregation column binding on table named aggr1. 3.Drop a aggregation item into table and set the named as aggr1. 4.Click OK Actual result: Pop up an error message said that the name is exist. Expected result: It can hint in dialog when input the same name, but pop up an error dialog
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
cmbGroup.setItems( groups );
			if ( binding != null && binding.getAggregateOn( ) != null )
			{
				btnGroup.setSelection( true );
				for ( int i = 0; i < groups.length; i++ )
				{
					if ( groups[i].equals( binding.getAggregateOn( ) ) )
					{
						cmbGroup.select( i );
						return;
					}
				}
				cmbGroup.setEnabled( true );
			}
			else
			{
				btnTable.setSelection( true );
				cmbGroup.select( 0 );
				cmbGroup.setEnabled( false );
			}
		}
		else
		{
			btnGroup.setEnabled( false );
			cmbGroup.setEnabled( false );
			btnTable.setSelection( true );
		}
	}
	private String[] getGroups( )
	{