Model Parts, Diagrams, Dictionary Items, and Properties > Dictionary items > Mailbox (dictionary item)
Mailbox (dictionary item)
For automation interface information about a Mailbox, see Mailbox (automation interface).
A mailbox is a mechanism for transferring data between synchronized tasks, one task posting the information for another to pick up. The operations associated with a mailbox are:
• Post
• Pend
• Check
You can create a Mailbox through the context menu of a Package: right-click the Package, and select New > Proprietary > Concurrency > Mailbox. In addition, you can create a Mailbox through a Concurrency Diagram.
When used on a diagram, a Mailbox's notation is as follows:
In the Modeler panes, a short-cut symbol on the Mailbox's icon indicates that the item is a stub.
The following sections provide information about how a Mailbox is used in the model. For more information about a property, item, model part or diagram, click it.
Properties
In addition to the standard properties, a Mailbox has these properties:
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The Class box on the Options tab of a Mailbox's Property Pages shows the Class, Data Type or Interface that owns the Operations that implement the Mailbox.
Owned by
Model
Package
Owns
Comment
Constraint
Dependency — The Dependency is owned jointly by the Mailbox and the other associated item. The access permissions you have to a Dependency are determined by the access permissions of the dependent item.
Defined in these parts of the model
Concurrency Model
Shown on these diagrams
Concurrency Diagram
Variant Diagram
Can be linked to these dictionary items
In addition to the owning Package or Model, a Mailbox can be linked to the following items.
Class — The linked Class contains the Operations required to implement the Mailbox (drag Class to Mailbox symbol on diagram).
Data Type — The linked Data Type contains the Operations required to implement the Mailbox (drag Data Type to Mailbox symbol on diagram).
Interface — The linked Interface contains the Operations required to implement the Mailbox (drag Interface to Mailbox symbol on diagram).
Stereotype
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