Delete Subjects

Subjects

Subject is a special type of Observable that acts as both an Observable (can be subscribed to) and an Observer (can receive and emit values). It allows multiple subscribers and enables both emitting and listening to values.

Subjects enable seamless communication between different UI components, including master layouts, interfaces, and components, while also managing and updating shared state across the application.

Subjects work in conjunction with subscriptions, which act as event handlers for the data emitted by subjects. Subscriptions can be defined at the interface, master layout, or component level to react to changes and trigger necessary updates.

Purpose of Subjects

Enable Multicasting: Subjects create a new execution for each subscriber, a Subject shares the same emitted values across multiple subscribers.

Act as an Event Emitter: Subjects are commonly used to emit and listen to events.

Facilitate Data Sharing Between Interfaces, Master Layouts and Components.

State Management

Creating Subjects

Follow the steps below to create a new subject:

1. Add a Folder
2. In the Explorer menu, right-click Subjects and select Add Folder.
3. Provide a suitable name for the folder. These folders help in organizing and categorizing related subjects.
4. A confirmation message, "Folder Added Successfully," will be displayed upon successful creation.
5. Add a Subject
6. Right-click the newly created folder and select Add.
7. The Properties panel will slide up from the bottom.
8. Configure Properties
9. Fill in the required details and click Save.

Property	Description	Comments
Name*	Enter the subject name.	Name must start with a character followed by alphanumeric or '_'. Spaces are not allowed. Only the underscore is permitted as a special character. Cannot start with a number.
Type*	Specify the type from the drop-down. The available options are: String Integer Double Boolean DateTime Long Any Entities	By default, it is set to String.
Is Array	Specifies whether the subject is an array. Options: Yes or No.	By default, it is set to No.
Default Value	Specifies the default value of the subject.	This property is visible only if Is Array is set to No.

note

An asterisk (*) denotes that the property is mandatory for creating a subject.

The "Subject property created successfully" message displays upon successful creation.

Delete Subjects

Users can delete an individual subject in a folder or a folder with subjects that are no longer in use.

Follow the below steps to delete subjects:

1. From explorer, right-click the subject in a folder and select Delete. The Delete pop-up window displays to confirm the deletion.
2. Click Confirm to delete. The "Subject deleted successfully" message displays upon successful deletion

note

If a subject is deleted all its references in the subscriptions should be manually removed.