neo4jClient使用参数创建具有动态标签的节点 [英] neo4jClient create node with dynamic label using paramters

问题描述

我正在构建一个应用程序，使用户能够构建自己的图形.我一直在使用参数进行所有查询和创建.但是，当我想让用户能够创建一个节点时，他们还可以在该节点上随意标记它(尊重空字符串标签上的neo4j限制).我将如何参数化此类交易?

I am building an app that give users the ability to construct there own graphs. I have been using parameters for all queries and creates. But when I want to give users the ability to create a node where they can also Label it anything they want(respecting neo4j restrictions on empty string labels). How would I parameterize this type of transaction?

我尝试过:

.CREATE("(a:{dynamicLabel})").WithParams(new {dynamicLabel = dlabel})... 

但是这会导致neo的语法错误.我很想串联，但是担心这可能会给我的应用程序带来注入风险.

But this yields a syntax error with neo. I am tempted to concatenate, but am worried that this may expose an injection risk to my application.

我很想建立自己的类，该类读取预期的字符串并拒绝任何类型的neo语法，但这会限制我的用户，而我宁愿不这样做.

I am tempted to build up my-own class that reads the intended string and rejects any type of neo syntax, but this would limit my users a bit and I would rather not.

推荐答案

有一个开放的neo4j 问题4334 ，这是一项功能请求，用于添加在CREATE期间参数化标签的功能.因此，这还不可能.

There is an open neo4j issue 4334, which is a feature request for adding the ability to parameterize labels during CREATE.So, this is not yet possible.

该问题包含一条注释，该注释建议生成带有硬编码标签的CREATE语句，这将起作用.不幸的是，它的性能不如使用参数(在这种情况下应支持).

That issue contains a comment that suggests generating CREATE statements with hardcoded labels, which will work. It is, unfortunately, not as performant as using parameters (should it ever be supported in this case).

这篇关于neo4jClient使用参数创建具有动态标签的节点的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！