Bug 136966 When set an alias on a column, the column can not be used in the cascading parameter
Description: When set an alias on a column, the column can not be used in the cascading parameter Steps to reproduce: 1. new a datasource and a dataset 2. set an alias on a column 3. new a cascading parameter, set the column with an alias as the values column Actual result: the column can not be used in the cascading parameter
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
okEnable = false;
		}
		else
		{
			Iterator iter = inputParameterGroup.getParameters( ).iterator( );
			if ( !iter.hasNext( ) )
			{
				okEnable = false;
			}
			else
			{
				int count = 0;
				while ( iter.hasNext( ) )
				{
					Object obj = iter.next( );
					if ( obj instanceof ScalarParameterHandle )
					{
						ScalarParameterHandle param = (ScalarParameterHandle) obj;
						count++;
						if ( param.getValueExpr( ) == null )
						{
							okEnable = false;
							break;
						}
					}
				}
				okEnable &= ( count != 0 );
			}
		}
		getOkButton( ).setEnabled( okEnable );