2/1/2022

Sequence Diagram Time

Notation DescriptionVisual Representation

Actor

  • a type of role played by an entity that interacts with the subject (e.g., by exchanging signals and data)
  • external to the subject (i.e., in the sense that an instance of an actor is not a part of the instance of its corresponding subject).
  • represent roles played by human users, external hardware, or other subjects.

Note that:

  • An actor does not necessarily represent a specific physical entity but merely a particular role of some entity
  • A person may play the role of several different actors and, conversely, a given actor may be played by multiple different person.

Lifeline

  • A lifeline represents an individual participant in the Interaction.

Activations

  • A thin rectangle on a lifeline) represents the period during which an element is performing an operation.
  • The top and the bottom of the of the rectangle are aligned with the initiation and the completion time respectively

Call Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Call message is a kind of message that represents an invocation of operation of target lifeline.

Return Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Return message is a kind of message that represents the pass of information back to the caller of a corresponded former message.

Self Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Self message is a kind of message that represents the invocation of message of the same lifeline.

Recursive Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Recursive message is a kind of message that represents the invocation of message of the same lifeline. It's target points to an activation on top of the activation where the message was invoked from.

Create Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Create message is a kind of message that represents the instantiation of (target) lifeline.

Destroy Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Destroy message is a kind of message that represents the request of destroying the lifecycle of target lifeline.

Duration Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Duration message shows the distance between two time instants for a message invocation.

Note

A note (comment) gives the ability to attach various remarks to elements. A comment carries no semantic force, but may contain information that is useful to a modeler.

Table Of Contents

Sequence Diagram is an Interaction diagram, which shows the message communication between various Objects. In this video you will learn about various constru. The sequence diagram is part of UML’s behavioral suite of diagrams, used to show interaction between tow of more object in the context of time as they occur. The sequence diagrams typically show the logical view of the system and interactions with it in form of events in one or more scenarios, therefore sometimes sequence diagram is also called event diagram.


Sequence diagram timeout

Time-Sequence Diagrams

Sequence Diagram Time

This appendix contains sequence diagrams showing the relationship between the API service requests issued at an endpoint and service primitives issued to or by the transport provider. It includes these sections:

•Overview

Describes the labelling and illustration techniques used in the diagrams.

•Diagrams

Includes the time-sequence diagrams.

Overview

Each time-sequence diagram shows a local transport user (Local TU) issuing requests and responding to events at the local transport interface (API), and a transport provider (TP) receiving request and response primitives, and issuing indication and confirm primitives.

Diagram Labelling

The transport provider is shown as a single entity, although, in actuality, there is a local and remote entity between which the protocol exchanges take place. Also, the transport interface between the remote transport provider and the peer transport user (Remote TU) is not shown.

The vertical lines delineating the transport provider represent the Transport Service Access Points (TSAPs) for the local and remote transport user. The vertical lines delineating the transport interface represent the endpoint from the perspective of the transport user and transport provider.

All interactions between the local transport user and the API are shown in terms of the service functions executed, and their normal or abnormal completions:

•The invocation of a function is labeled a request

•Its successful completion is simply labeled a completion

•An abnormal completion is indicated by error

•An asynchronous event that causes an exit routine to be scheduled is labeled an indication.

Synchronous and Asynchronous Modes

Sequence Diagram Timeout

Some sequences are shown in synchronous and asynchronous mode:

Uml Graphviz

•Synchronous mode applies when service requests are issued synchronous with normal application program processing. Generally, the application program is running under control of a PRB.

•Asynchronous mode applies when service requests are issued asynchronous with normal processing. This mode requires use of exit routines, and requests are often issued under control of the IRB that runs the exit routine.

Sequence

In synchronous mode, the time relationship between the occurrence of an event (for example, the arrival of some data) and invocation of the corresponding service function (for example, TRECV) is unimportant. However, in asynchronous mode, the service function is generally issued in response to the event.

Diagram

Completion and Error Events

Completion and error events occur when a TCHECK control function is executed. The TCHECK function may be executed by the API (OPTCD=SYNC) or the transport user (OPTCD=ASYN).

Diagrams

This section includes the time-sequence diagrams.

Local Endpoint Management (Initialization)

Client Connect Sequence (Accepted)

Synchronous Mode

Asynchronous Mode

Client Connect Sequence (Rejected)

Synchronous Mode

Asynchronous Mode

Server Connect Sequence (Accepted)

Synchronous Mode

Asynchronous Mode

Server Connect Sequence (Rejected)

Synchronous Mode

Asynchronous Mode

COTS Receive Data Sequence

Synchronous Mode

Asynchronous Mode

COTS Send Data Sequence

TLI Mode

Socket Mode

CLTS Receive Data Sequence

Synchronous Mode

Asynchronous Mode

CLTS Send Data Sequence

CLTS Datagram Error Sequence

Sequence Diagram Time

Sequence Diagram Time Trigger

Synchronous Mode

Asynchronous Mode

Orderly Release Sequence

Receive Path - Synchronous Mode

Receive Path - Asynchronous Mode

No Receive Data - Synchronous Mode

Send Path

Abortive Disconnect Sequence

Locally Initiated

System Sequence Diagram

Remotely Initiated

Simultaneous Disconnects

Transparent

Non-Transparent

Sequence Diagram Timer

Local Endpoint Management (Termination)