drl文件中使用map

JAVA代码：

   Map map1 = new HashMap();Map map11 = new HashMap();map11.put("name", "jack");map11.put("address", "xian");map1.put("id", "001");map1.put("money", "5000");map1.put("item", map11);ksession.insert(map1);

rule "rule1"when$m:Map(this["id"]=="001",$item:this["item"]!=null)then//获得第二层Map的值System.out.println(((Map)$m.get("item")).get("name"));end