Bug 118750 Insert group for table from library, system throws exception.
Insert group for table from library, system throws exception. Steps: 1.Insert a tabel from library 2.Insert group Actual Results: 1.System throws exception A Birt exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:1.0.1 Error Code:Error.ContentException.STRUCTURE_CHANGE_FORBIDDEN Error Message:Element "report.Body[1]" is child element or a virtual element( inside the child ), can not change its structure. Expected Results: 1.Can be inserted group
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/core/model/schematic/TableHandleAdapter.java
return list.get( i - 1 );
		}
		return null;
	}
	/**
	 * Gets the special cell.
	 * 
	 * @param rowNumber
	 *            The row number.
	 * @param columnNumber
	 *            The column number.
	 * @param bool
	 * @return The special cell.
	 */
	public Object getCell( int rowNumber, int columnNumber, boolean bool )
	{
		Object obj = getRow( rowNumber );
		TableHandleAdapter.RowUIInfomation info = getRowInfo( obj );
		Object retValue = null;
		if ( info != null
				&& columnNumber >= 1
				&& info.getAllChildren( ).size( ) >= columnNumber )
		{
			retValue = info.getAllChildren( ).get( columnNumber - 1 );
		}
		if ( bool )
		{
			return retValue;
		}
		if ( HandleAdapterFactory.getInstance( )