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 getTableHandle( ).getColumns( ).getContents( );
	}
	/**
	 * Gets the special row
	 * 
	 * @param i
	 *            The row number.
	 * @return The special row.
	 */
	public Object getRow( int i )
	{
		List list = getRows( );
		if ( i >= 1 && i <= list.size( ) )
		{
			return list.get( i - 1 );
		}
		return null;
	}
	/**
	 * Gets the special column
	 * 
	 * @param i
	 *            The column number.
	 * @return The special column.
	 */
	public Object getColumn( int i )
	{
		List list = getColumns( );
		if ( i >= 1 && i <= list.size( ) )
		{