基于 DateTime Dataweave 过滤负载

Question

我有这个示例负载，我想根据日期时间值过滤它：

[
    {
        "title" : "Article 1",
        "createdDateTime": "2021-04-04T18:41:00"
    },
    {
        "title" : "Article 2",
        "createdDateTime": "2021-04-04T18:49:00"
    },
    {
        "title" : "Article 3",
        "createdDateTime": "2021-04-04T18:55:00"
    }
]

我只想要 15 分钟前创建的文章，例如日期时间现在是“2021-04-04T19:00:00”，我应该只得到第 2 条和第 3 条。尝试了这个表达式，但没有不工作：

%dw 2.0
output application/json
---
payload filter ((value) -> (value.createdDateTime as: datetime{"yyyy-MM-ddTHH:mm:ss"}  <= now()-|PT15M|))

有更好的方法吗？谢谢！

Answer 1

此解决方案使用一个函数来接收列表、时间戳（您可以使用 now()）和句点。

%dw 2.0
output application/json
fun filterPeriod(list, time, period) =
    payload filter ((value) -> (time - (value.createdDateTime 
        as LocalDateTime { format: "yyyy-MM-dd'T'HH:mm:ss"}))  as Number {unit: "milliseconds"} <= period  as Number {unit: "milliseconds"}  )
---
filterPeriod(payload, |2021-04-04T19:00:00|, |PT15M|)

输出：

[
  {
    "title": "Article 2",
    "createdDateTime": "2021-04-04T18:49:00"
  },
  {
    "title": "Article 3",
    "createdDateTime": "2021-04-04T18:55:00"
  }
]
``'

基于 DateTime Dataweave 过滤负载

Filter Payload Based on DateTime Dataweave

dataweave

mulesoft