Moving toward Apache Beam 2.x, I want to use templates as much as possible, and ValueProvider accordingly.
转向Apache Beam 2.x，我想尽可能多地使用模板，并相应地使用ValueProvider。
In my logic, I am using a FixedWindow, but the duration is flexible, so I rather get it from a ValueProvider.
在我的逻辑中，我使用的是FixedWindow，但持续时间很灵活，所以我宁愿从ValueProvider中获取它。
The problem is that FixedWindows.of() only get Duration, and I failed to find a simple way to grab a ValueProvider and make a duration out of it.
问题是FixedWindows.of（）只获取持续时间，而我找不到一种简单的方法来获取ValueProvider并从中获取持续时间。
Please advise, Shushu
请告知，舒书
2 个解决方案
#1
2
Unfortunately this question has a simple answer: this is currently not supported. Feel free to file a JIRA - it seems like a reasonable request.
不幸的是，这个问题有一个简单的答案：目前不支持这个问题。随意提交JIRA - 这似乎是一个合理的要求。
#2
1
Ran into this exact issue today but with SlidingWindows, we just wrote our own windowing function with a new param that was a ValueProvider instead (similar to https://github.com/apache/beam/pull/3358/files) and this seems to work.
今天进入这个确切的问题，但是使用SlidingWindows，我们只是用一个新的参数编写了我们自己的窗口函数，而这个参数是一个ValueProvider（类似于https://github.com/apache/beam/pull/3358/files），这似乎上班。
#1
2
Unfortunately this question has a simple answer: this is currently not supported. Feel free to file a JIRA - it seems like a reasonable request.
不幸的是，这个问题有一个简单的答案：目前不支持这个问题。随意提交JIRA - 这似乎是一个合理的要求。
#2
1
Ran into this exact issue today but with SlidingWindows, we just wrote our own windowing function with a new param that was a ValueProvider instead (similar to https://github.com/apache/beam/pull/3358/files) and this seems to work.
今天进入这个确切的问题，但是使用SlidingWindows，我们只是用一个新的参数编写了我们自己的窗口函数，而这个参数是一个ValueProvider（类似于https://github.com/apache/beam/pull/3358/files），这似乎上班。