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
{
		if ( getModelAdaptHelper( ) instanceof ITableAdapterHelper )
		{
			return ( (ITableAdapterHelper) getModelAdaptHelper( ) ).getClientAreaSize( );
		}
		return new Dimension( );
	}
	private TableHandle getTableHandle( )
	{
		return (TableHandle) getHandle( );
	}
	/**
	 * Returns the defined width in model in Pixel.
	 * 
	 * @return
	 */
	public String getDefinedWidth( )
	{
		DimensionHandle handle = ( (ReportItemHandle) getHandle( ) ).getWidth( );
		if ( handle.getUnits( ) == null || handle.getUnits( ).length( ) == 0 )
		{
			return null;
		}
		else if ( DesignChoiceConstants.UNITS_PERCENTAGE.equals( handle.getUnits( ) ) )
		{
			return handle.getMeasure( )
					+ DesignChoiceConstants.UNITS_PERCENTAGE;
		}
		else
		{