How to use ]Link.Create beforeRead hook?
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How to use ]Link.Create beforeRead hook?
Hi,
I'm experimenting with ]Link and I'm trying to add a hook. Somehow, the following code doesn't work for me, so can anyone give a hint what I'm doing wrong?
I'm on Dyalog version:
Version: 18.0.39803.0 64 Unicode
Created: Jan 7 2021 at 20:02:30
Build ID: 4d00828c
[EDIT:] Additional info: My link version seems to be 2.0.5. It semes that hooks were already implemented back then, because if I pass an empty opts namespace, I get variables beforeRead and beforeWrite after executing LINK.Create, however, when debugging I can't find any reference, where these options are used. When did you introduce the hooks?
Thank you very much!
Tobias
I'm experimenting with ]Link and I'm trying to add a hook. Somehow, the following code doesn't work for me, so can anyone give a hint what I'm doing wrong?
- Code: Select all
load←⎕ns''
load.beforeRead←{⎕this.called+←1 ⋄ 1}
load.called←0
options←⎕ns''
options.beforeRead←'load.beforeRead'
options ⎕SE.Link.Create 'ws' '/path/to/ws'
⍝ load.called still returns 0
I'm on Dyalog version:
Version: 18.0.39803.0 64 Unicode
Created: Jan 7 2021 at 20:02:30
Build ID: 4d00828c
[EDIT:] Additional info: My link version seems to be 2.0.5. It semes that hooks were already implemented back then, because if I pass an empty opts namespace, I get variables beforeRead and beforeWrite after executing LINK.Create, however, when debugging I can't find any reference, where these options are used. When did you introduce the hooks?
Thank you very much!
Tobias
- zaibot.w
- Posts: 6
- Joined: Mon Jun 29, 2020 4:09 pm
Re: How to use ]Link.Create beforeRead hook?
Hi Tobias,
Sorry, I think this only works in Link 2.1.
Also, you need to give a full path to beforeRead like this:
options.beforeRead←'#.load.beforeRead'
options ⎕SE.Link.Create 'ws' 'd:/git/test3'
Linked: #.ws ←→ d:\git\test3
load.called
4
Regards,
Vince
Sorry, I think this only works in Link 2.1.
Also, you need to give a full path to beforeRead like this:
options.beforeRead←'#.load.beforeRead'
options ⎕SE.Link.Create 'ws' 'd:/git/test3'
Linked: #.ws ←→ d:\git\test3
load.called
4
Regards,
Vince
- Vince|Dyalog
- Posts: 434
- Joined: Wed Oct 01, 2008 9:39 am
Re: How to use ]Link.Create beforeRead hook?
Hi Tobias,
There was a link bug #68 fixed in Link 2.1: Link.Import should call beforeRead for variables
https://github.com/Dyalog/link/issues/68
Although the bug only mentions variables, I think this must be related to beforeRead in general.
Regards,
Vince
There was a link bug #68 fixed in Link 2.1: Link.Import should call beforeRead for variables
https://github.com/Dyalog/link/issues/68
Although the bug only mentions variables, I think this must be related to beforeRead in general.
Regards,
Vince
- Vince|Dyalog
- Posts: 434
- Joined: Wed Oct 01, 2008 9:39 am
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