目录关于集合的快捷写法集合的遍历导航
关于集合的快捷写法 /** * set 集合测试 * 备注：集合的快捷写法 * @throws Exception if any */@Testpublic void shorthandTest() throws Exception { ExpressRunner runner = new ExpressRunner(false,false); DefaultContext<String, Object> context = new DefaultContext<>(); String express = "abc = NewMap(1:1,2:2); return abc.get(1) + abc.get(2);"; Object r = runner.execute(express, context, null, false, false); Assert.assertEquals(3, r); express = "abc = NewList(1,2,3); return abc.get(1)+abc.get(2)"; r = runner.execute(express, context, null, false, false); Assert.assertEquals(5, r); express = "abc = [1,2,3]; return abc[1]+abc[2];"; r = runner.execute(express, context, null, false, false); Assert.assertEquals(5, r);} 集合的遍历
其实类似 java 的语法，只是 ql 不支持 for(obj:list){} 的语法，只能通过下标访问。
foreachTest() /** * 遍历测试 * */@Testpublic void foreachTest() throws Exception { ExpressRunner runner = new ExpressRunner(false,false); DefaultContext<String, Object> context = new DefaultContext<>(); String express = " Map map = new HashMap();n" + " map.put("a", "a_value");n" + " map.put("b", "b_value");n" + " keySet = map.keySet();n" + " objArr = keySet.toArray();n" + " for (i=0;i<objArr.length;i++) {n" + " key = objArr[i];n" + " System.out.println(map.get(key));n" + " }"; Object r = runner.execute(express, context, null, false, false); System.out.println(r);} 测试结果 a_valueb_valuenull 导航QLExpress 系列导航