[BUG-13551] Wildcards in registerWriteHandler

Module Development
1

I am trying to use wildcards to create a write handler callback in ignition 8.

For a given tag “THK_DEV/Amplitude”

This callback gets triggered
provider.registerWriteHandler(“THK_DEV/Amplitude”, new WriteHandler() { …

However when using wildcards nothing gets triggered
provider.registerWriteHandler(“THK_DEV/*”, new WriteHandler() { …

I have even tried an empty string as well as “*” for the tag path but I cant get an wildcard usage to work.

I am following the documentation from http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.0-beta/index.html

  • The path may end with a wildcard to accept writes for anything under the location (for example “path/to/*”).
  • A null/empty path will register the handler for all tags.
  • The most specific write handler is called, and others will not be called.
2

You’re using a ManagedTagProvider on 8.0, right?

Unfortunately it looks like that bit of documentation that says you can use a wildcard path is pure fantasy.

3

Kevin, yes I am using 8. Is there any plan to implement the wildcard functionality?

4

We’ll try to look at this soon but there’s some other higher priority stuff going on right now.

5

This will be fixed for 8.0.3. Should be in the nightly build within a few days, we’ll post back when it’s up.

1 Like
6

Hi,

This was merged in yesterday, 5/22, so it should be working in today’s nightly build.

7

Thanks, I will try it out.