ONode oNode = new ONode();
oNode.set("id", 1);
oNode.getOrNew("layout").then(o -> {
    o.addNew().set("title", "开始").set("type", "start");
    o.addNew().set("title", "结束").set("type", "end");
});

oNode.get("id").getInt();
oNode.get("layout").get(0).get("title").getString();

oNode.getOrNew("list").fillJson("[1,2,3,4,5,6]");

ONode.ofBean(store).select("$..book[?@.tags contains 'war'].first()").toBean(Book.class); //RFC9535 规范，可以没有括号
ONode.ofBean(store).select("$..book[?(!(@.category == 'fiction') && @.price < 40)].first()").toBean(Book.class);
ONode.ofJson(store).select("$.store.book.count()");

ONode.ofBean(store).create("$.store.book[0].category").toJson();

ONode.ofBean(store).delete("$..book[-1]");

JsonSchema schema = JsonSchema.ofJson("{type:'object',properties:{userId:{type:'string'}}}"); //加载架构定义

schema.validate(ONode.ofJson("{userId:'1'}")); //校验格式

User user = new User();
ONode.ofBean(user).toBean(User.class); //可以作为 bean 转换使用
ONode.ofBean(user).toJson();

ONode.ofJson("{}").toBean(User.class);
ONode.ofJson("[{},{}]").toBean((new ArrayList<User>(){}).getClass()); //泛型
ONode.ofJson("[{},{}]").toBean(new TypeRef<List<User>>(){}); //泛型

//快捷方式
String json = ONode.serialize(user);
User user = ONode.deserialize(json, User.class);

//case1
ONode o = ONode.ofJson(json); 
ONode rst = o.select("$.data.list[*].mobile"); //自动为查询到的节点，生成 path 属性
List<String> rstPaths = rst.pathList(); //获取结果节点的路径列表
for(ONode n1 : rst.getArray()) {
    n1.path(); //当前路径
    n1.parent(); //父级节点
}

//case2
ONode o = ONode.ofJson(json).usePaths(); //手动为每个子节点，生成 path 属性
ONode rst = o.get("data").get("list").get(2);
rst.path();
rst.parent();

Options options = Options.of();
//添加编码器
options.addEncoder(Date.class, (ctx, value, target) -> {
    target.setValue(DateUtil.format(data, "yyyy-MM-dd"));
});
//添加解码器
options.addDecoder(Date.class, ...);
//添加创建器（接管类实例化）
options.addCreator(...);

//添加特性
options.addFeature(Feature.Write_PrettyFormat);

//移除特性
options.removeFeature(Feature.Write_PrettyFormat);

//设置日期格式附
options.addFeature(Feature.Write_UseDateFormat); //使用日期格式
options.dateFormat("yyyy-MM");

//..

String json = ONode.ofBean(orderModel, options).toJson();

import org.noear.snack4.ONode;
import org.noear.snack4.jsonpath.FunctionLib;

public class FunctionDemo {
    public static void main(String[] args) {
        //定制 floor 函数
        FunctionLib.register("floor", (ctx, argNodes) -> {
            ONode arg0 = argNodes.get(0); //节点列表（选择器的结果）

            if (ctx.isDescendant()) {
                for (ONode n1 : arg0.getArray()) {
                    if (n1.isNumber()) {
                        n1.setValue(Math.floor(n1.getDouble()));
                    }
                }

                return arg0;
            } else {
                ONode n1 = arg0.get(0);

                if (n1.isNumber()) {
                    return ctx.newNode(Math.floor(n1.getDouble()));
                } else {
                    return ctx.newNode();
                }
            }
        });

        //检验效果（在 IETF 规范里以子项进行过滤，即 1,2） //out: 1.0
        System.out.println(ONode.ofJson("{'a':1,'b':2}")
                .select("$.a.floor()")
                .toJson());

        //参考 //out: 2.0
        System.out.println(ONode.ofJson("{'a':1,'b':2}")
                .select("$[?floor(@) > 1].first()")
                .toJson());
    }
}

import org.noear.snack4.ONode;
import org.noear.snack4.jsonpath.OperatorLib;

public class OperationDemo {
    public static void main(String[] args) {
        //定制操作符
        OperatorLib.register("startsWith", (ctx, node, term) -> {
            ONode leftNode = term.getLeftNode(ctx, node);

            if (leftNode.isString()) {
                ONode rightNode = term.getRightNode(ctx, node);
                if (rightNode.isNull()) {
                    return false;
                }

                return leftNode.getString().startsWith(rightNode.getString());
            }
            return false;
        });

        //检验效果
        assert ONode.ofJson("{'list':['a','b','c']}")
                .select("$.list[?@ startsWith 'a']")
                .size() == 1;
    }
}