Get started with Subject composition

Docs

Get started with Subject composition

In this guide we will dive into Subject composition. Subject composition can be extremely useful in the Blockbax platform because it can help define a hierarchy. A hierarchy is defined by selecting the parent types for a subject type, and then populating the relevant parent for a subject. Have a look at our subject type documentation, here you will see a more in-depth explanation of the implications of subject composition with a visual example. Our example will cover the following composition:

Subject type definition:

graph TD B[

Floor

] --> D[

Room

Parent type: Floor] --> F[

Temperature Sensor

Parent type: Room]

Example:

graph TD B(Floor 1) B --> D[Room 1A] D --> F[Temperature Sensor 1A]

Let’s have a look at the steps:

Navigate to your Subject Types overview and create a new subject type

Name the newly created Subject type "Floor" and click on "Create subject type"

Create another Subject type "Room"

Select "Floor" as the parent type

Create your subject type

Navigate back to your Subject overview and create a new subject. Note: Please make sure you create a subject here, and not a subject type

Select "Floor" as the subject type

Name the newly created floor "Floor 1" and click on "Create subject"

Create another new subject and select "Room" as subject type. Name the newly created room "Room 1A"

Set the parent of the newly created room to "Floor 1" and press "Create subject"

Congratulations, you’ve just configured the subject composition between 2 new subject types. These newly created subject types don’t have any ingested metrics, but you can of course take it a step further and add another layer of subject composition. Below we’ll repeat the process for an existing subject type in this project namely the "Temperature Sensor".