Bug 214065 [Regression]Group TOC are created automatically when preview in Web viewer and PDF
Description: [Regression]Group TOC are created automatically when preview in Web viewer and PDF Build number: 2.3.0.v200701012-1021 Steps to reproduce: 1, New a table binding with dataset 2, New a group on table and do not specify the group toc 3, Preview in Web viewer and PDF Expected result: No default TOC of group Actual result: Some empty group toc created automatically in preview Error log:
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ReportItemExecutor.java
continue;
				}
				boolean isHidden = ( (Boolean) result ).booleanValue( );
				
				
				if ( !isHidden )
				{
					continue;
				}
				
				buffer.append( rule.getFormat( ) );
				buffer.append( "," ); 
			}
			if ( buffer.length( ) != 0 )
			{
				buffer.setLength( buffer.length( ) - 1 );
				content.getStyle( ).setVisibleFormat( buffer.toString( ) );
			}
		}
	}
	
	/**
	 * Sets the visibility property for column.
	 */
	protected void processColumnVisibility( ColumnDesign design, Column column )
	{
		VisibilityDesign visibility = design.getVisibility( );
		if ( visibility != null )
		{
			StringBuffer buffer = new StringBuffer( );