topic Re: Forward Migration Help Needed! in Libraries & objects

Forward Migration Help Needed!

JGoode — Thu, 21 Sep 2017 15:39:56 GMT

Hello,

I have an issue whilst forward migrating an object. In the old version of the object the is defined variable using the following;

VALUES 'trunktypeX' '0 none','1 coniferous','2 decidous','3 shrub'

As you can see it says '2 decidous' rather than deciduous...This is corrected in the latest version of the object but I want to be able to add a line of code into my forward migration script to be able to basically change that variable definition to the new definition. I just don't know how to do it and I can't seem to find anything about it online. Changing the old object isn't an option due to it being used by other people and it would definitely cause problems. Thanks in advance for any help.

Re: Forward Migration Help Needed!

Erwin Edel — Fri, 22 Sep 2017 07:12:31 GMT

I would say it is a matter of putting

if trunktypeX = '2 decidous' then
trunktypeX = '2 deciduous'
endif

in the Forward Migration script.

Or is this what you have tried?

Re: Forward Migration Help Needed!

JGoode — Fri, 22 Sep 2017 08:10:33 GMT

Erwin wrote:
I would say it is a matter of putting
if trunktypeX = '2 decidous' then
trunktypeX = '2 deciduous'
endif
in the Forward Migration script.

Or is this what you have tried?

I have not tried this, I didn't know the best way to scripting it. I will let you know how it goes, thanks.

Re: Forward Migration Help Needed!

JGoode — Fri, 22 Sep 2017 08:13:58 GMT

JGoode wrote:
I will let you know how it goes, thanks.

It didn't seem to work sadly.

Edit: Got it working, just had to define it in the new object too

Re: Forward Migration Help Needed!

Erwin Edel — Fri, 22 Sep 2017 08:54:18 GMT

Great

Re: Forward Migration Help Needed!

JGoode — Fri, 22 Sep 2017 11:30:05 GMT

Erwin wrote:
Great

Hi, I have another issue with forward migrating. Basically I have 2 versions of the same object, one of which is an upgrade from the previous object. However the issue is that on one object

A = 0.95

and

 B = 2.2

but on the new object those are the other way around so

 A = 2.2 and B = 0.95

I can't seem to work out how to basically make them switch over using the forward migration script. Thanks for any help.

Re: Forward Migration Help Needed!

Erwin Edel — Fri, 22 Sep 2017 11:52:26 GMT

With forward migration script, put A in placeholderB and B in placeholderA, then turn B into placeholderB and A into placeholderA?

Re: Forward Migration Help Needed!

JGoode — Fri, 22 Sep 2017 11:59:07 GMT

Erwin wrote:
With forward migration script, put A in placeholderB and B in placeholderA, then turn B into placeholderB and A into placeholderA?

I don't understand what you mean, would you be able to give an example please?

Re: Forward Migration Help Needed!

Erwin Edel — Fri, 22 Sep 2017 12:14:48 GMT

I would use placeholder parameters. So put parameter A in a parameter placeholderB, etc. Then change B to be placeholderB.

I am not sure how the migration script works excactly, but I would say it runs once you load the newer library part and looks for the old part to change parameters as needed. Changing existing parameters around might not work though.

So yeah, big disclaimer, I've never bothered making replacement parts. Most of our 'custom' library parts are just simple 2D symbols and a large collection of custom parametric door leafs that we generally copy / paste as needed in to project specific libraries so they can be freely edited.