Bug 145992 [regression] drill through to report document with toc in target does not work properly
steps to reproduce: - create 1st report - add a report element with toc entry - preview in viewer - create 2nd report - add a drill through link to the report document expected behavior: - drill through can be added actual behavior: - when select toc in target, exception was thrown out
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HyperlinkBuilder.java
String text = null;
			ParamBinding parameterBinding = ( (ParamBinding) element );
			if ( parameterBinding != dummyParameterBinding )
			{
				if ( columnIndex == 0 )
				{
					text = parameterBinding.getParamName( );
				}
				else if ( columnIndex == 2 )
				{
					text = parameterBinding.getExpression( );
				}
			}
			if ( text == null )
			{
				text = ""; 
			}
			return text;
		}
		public void addListener( ILabelProviderListener listener )
		{
		}
		public void dispose( )
		{
		}
		public boolean isLabelProperty( Object element, String property )
		{
			return false;
		}
		public void removeListener( ILabelProviderListener listener )