Bug 210507 Enhance Report engine to support multiple view
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/parser/EngineIRVisitor.java
{
		StyleHandle handle = item.getHandle( ).getPrivateStyle( );
		if ( handle == null )
		{
			return;
		}
		Iterator iter = handle.mapRulesIterator( );
		if ( iter == null )
		{
			return;
		}
		MapDesign map = new MapDesign( );
		while ( iter.hasNext( ) )
		{
			MapRuleHandle ruleHandle = (MapRuleHandle) iter.next( );
			MapRuleDesign rule = createMapRule( ruleHandle, defaultStr );
			if ( rule != null )
			{
				map.addRule( rule );
			}
		}
		if ( map.getRuleCount( ) > 0 )
		{
			item.setMap( map );
		}
	}
	/**
	 * create a map rule.
	 * 
	 * @param obj