Bug 314088 The table row height does not work correctly in PDF
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/RootArea.java
public RootArea( RootArea area )
	{
		super( area );
	}
	
	public int getMaxAvaHeight( )
	{
		return context.getMaxBP( );
	}
	
	public void autoPageBreak( ) throws BirtException
	{
		int height = context.getMaxBP( );
		SplitResult result = split( height, false) ;
		
		if(result==SplitResult.BEFORE_AVOID_WITH_NULL || result == SplitResult.SUCCEED_WITH_NULL)
		{
			result = split(height, true);
		}
		if ( result.getResult( )!= null )
		{
			page.setBody( result.getResult( ) );
			page.close( );
		}
		updateChildrenPosition( );
		initialize( );
	}
	public RootArea cloneArea( )
	{
		return new RootArea( this );