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using OpenStudio model, how do I get the uuid value of a object-list field?

asked 2020-07-28 09:58:33 -0500

swami gravatar image

updated 2020-07-28 15:36:56 -0500

Developing an app using openstudio modelobject

  1. Loaded a sample osm file into model
  2. Traversing the model to extract (.osm file) data
  3. for an object-list field, able to obtain referred object name.
  4. Since it is possible that the object name may not be unique, I would like to know the object's uuid rather than its name (from the object-list field) so that I can access the correct object.

Appreciate any help

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Are you asking how to get an OpenStudio object's UUID via the OpenStudio SDK?

shorowit gravatar imageshorowit ( 2020-07-28 10:08:23 -0500 )edit

Boy! You guys are fast.

Yes, the SDK. Not Openstudio app. Sorry for not being clear. I am developing a C# app using OpenStudio.dll (2.9.0) etc. Thank you

swami gravatar imageswami ( 2020-07-28 10:15:41 -0500 )edit

I looked at some of the handle utilities. However, could not figure out how to read off the UUID's Here is an example

OS:Construction, {7954b1de-6a1c-40aa-8ff5-ebcc278e204b}, ! Handle 000 Exterior Door, ! Name {fd5f6384-4bd6-4a16-aaf2-e2e57c7ac5e3}, ! Surface Rendering Name {6e535b8c-5f4e-49b4-9c8c-53def4ee5b3e}, ! Layer 1 {83088629-4598-4a88-9e3c-cbedee5e2f96}; ! Layer 2

Reading the Layer 1 & Layer 2 values (using idfObject.getString(4).get()) gives me the names of the material, not the UUID listed here.

swami gravatar imageswami ( 2020-07-28 12:48:00 -0500 )edit

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answered 2020-07-28 12:55:31 -0500

updated 2020-07-28 17:17:21 -0500

You can use foo.handle to get an OpenStudio::UUID object for any OpenStudio ModelObject. I don't know the exact syntax in C#, but here's an example in interactive Ruby:

image description


If you want to get the UUID of a referenced object, you can do exactly as above by getting the referenced object and then calling .handle on it. Here's an example of getting the UUID of a layer in a construction:

image description

Edit 2:

If you want to get the UUID for a generic IdfObject, instead of calling foo.getString(4).get, you can call foo.idfObject.getString(4).get.

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Given an object, I am able to read the UUID. No problem Like in the example I cited earlier, the problem is when I read an object-list field's value which is a uuid referring to another object, the result is not the uuid but the name of that object. I need to be able to read the field's literal uuid value. Thanks

swami gravatar imageswami ( 2020-07-28 15:22:51 -0500 )edit

Thank you. Although that certainly works, I want to be able to get the same info just using a generic idfObject, the field sequence number and field type -- all without converting the object to any specific object like LayeredConstruction

swami gravatar imageswami ( 2020-07-28 16:57:14 -0500 )edit

Any thoughts on this?

swami gravatar imageswami ( 2020-07-30 07:38:06 -0500 )edit

Did you see the solution in my second edit? I believe this is what you want: foo.idfObject.getString(4).get

shorowit gravatar imageshorowit ( 2020-08-03 10:25:58 -0500 )edit

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Asked: 2020-07-28 09:58:33 -0500

Seen: 90 times

Last updated: Jul 28