![]() ![]() Asynchronous message arrow has stick head.Horizontal asynchronous message arrow directly to Construction of new object indicated by.Synchronous message sent to the object whose Object disposal or destruction indicated by a.Actual value returned can be given after colon.Reply message arrow can be labelled with.Indicate that participant is an object, not a Can just precede class of object with a colon to.No need to name participant objects and actors.Head of Department within personnel department Diagram describes process of promoting me to be.Message to self slightly offset from older Represented on sequence diagram by a nestedĪctivation, with activation resulting from.That is, the object now has two live activations.If an object sends a message to itself, then the.The activation V during which sync msg 3 was sent.Returns to the object B whose message send, sync Top of the stack and it terminates, then itsĪctivation is removed from the stack and control If the activation X of the object, C, is at the.Then the object that receives this message (C)īecomes active and its activation (X) becomes the The top of the stack (e.g., B) sends a message, If the object whose activation is currently at.Receive control back from objects to which they All the other activated objects are waiting to.Stack will be the one that currently has control Live activations and the one at the top of the At any given instant there will be a stack of.Have been made active by receiving a message from System objects can only send messages when they.In procedural systems, only actors can initiateĪctivity by sending a message "out of the blue". ![]() Implies that there is an association between Object of class B in a sequence diagram, this If an object of class A sends a message to an.Represented by arrows that go from left to right This means that most of the message sends are.Generally be arranged in the order in which they For readability, the participants should.Can indicate when an object is computing by.Return value to A, indicated by the dashed arrow At the end of its activation, B might send a.Invoked by the message, sync msg 2, sent to it by Until it has finished carrying out the operation B will continue to have the live activation, V,.Stop computing temporarily while C starts to have If B sends a message to another object, C, B may.In a procedural interaction (no concurrency),Įxactly one object is computing at any given.Representing the message from A hits the lifeline Narrow rectangle covering the lifeline of B, This activation is represented by drawing a.When B receives the message, it starts to have a.Sequence diagram by an arrow with a solid black A synchronous message is represented on a.The operation invoked by the message sent to itīy A, then this message is said to be synchronous If A has to stop computing while B carries out.A message sent from participant A to participantī is represented by an arrow with a solid lineĭrawn from the lifeline of A to the lifeline of B.Time is understood to move forward as we move.Extending down the page from each participant is.Is represented by an icon in a row across the top Each object or actor is called a participant and.Only shows actors and objects involved in the.Sequence diagram shows how actors and objects.Interact to realize the use case scenarios Interaction diagrams describe how objects.Realize use cases and relationships between these Class diagram describes classes required to.Use case diagram describes tasks that system must.(Based on Stevens and Pooley (2006, Chapters 9,. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |