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
{
			return formatString.split( ":" )[0]; 
		}
		return null;
	}
	private String getPattern( String formatString )
	{
		if ( formatString != null )
		{
			int index = formatString.indexOf( ':' ); 
			if ( index == -1 )
			{
				return null;
			}
			return formatString.substring( index + 1 );
		}
		return null;
	}
	private String getColumnName( String value )
	{