The first thing to note about these two diagrams is how clearly the sequence diagram indicates the differences in how the participants interact. This is the great strength of interaction diagrams. They aren’t good at showing details of algorithms, such as loops and conditional behavior, but they...
序列图 (Sequence Diagram) 描述对象间的交互 着重于消息传递的时间顺序 分析或展示系统中的消息流和交互 用例图 (Use Case Diagram) 描述系统功能以及用户与系统的交互 简明地表示系统的功能和参与者 初步分析系统功能和用户需求 类图(Class Diagram) 描述类的结构以及类之间的关系 强调类的属性、方法和类之间的关系...
在深入探索PlantUML中类图的创建之前,我们首先需要理解类图(Class Diagram)的本质和重要性。正如著名计算机科学家格雷迪·布奇(Grady Booch)在他的作品《面向对象分析与设计》中所言:“类图是用于建模类、接口以及它们之间关系的静态结构图。” 这句话深刻地揭示了类图不仅仅是一种图形表示,而是一种表达软件系统静态结构...
one for the basic course of action and one for each alternate course. My advice is to only create a sequence diagram when you have complex logic that you want to think through – if the logic is straightforward the sequence diagram won’t add any value, you had might as well go straight...
between the two is that a sequence diagram is a diagram that represents how the messages or events are exchanged between the objects of a system and in what timeorder, while a collaboration diagram is a diagram that represents how one object is connected to another to implement the logic. ...
1) constructs sequence diagrams (Sect. 5) given a code hypergraph corresponding to an input code base. Each hyperpath [7] in that hypergraph encodes all object interactions in an execution of the code base and therefore a corresponding sequence diagram can be generated. The hyperpath in Fig. ...
the notation elements needed to be improved in order to make diagrams more readable. (For example, modeling logical flow in UML 1.x was complicated and at times impossible. Changes to the sequence diagram's notation set in UML 2 have made vast improvements in modeling logic in sequences.) ...
A combined fragment is used to group sets of messages together to show conditional flow in a sequence diagram. The UML 2 specification identifies 11 interaction types for combined fragments. Alternatives Alternatives are used to designate a mutually exclusive choice between two or more message ...
Decision node: A conditional branch in the flow that is represented by a diamond. It includes a single input and two or more outputs. Control flows: Another name for the connectors that show the flow between steps in the diagram. Start node: Symbolizes the beginning of the activity. The st...
时序图(Sequence Diagram),在软件工程中用于展示对象间交互的序列。这种图表特别强调消息流的时间顺序。PlantUML中的时序图不仅直观地展现了消息如何在不同对象间传递,还揭示了系统的运作机制。 7.1.1 时序图的基本元素 时序图由几个关键元素组成:参与者(Participant)、生命线(Lifeline)、消息(Message)和激活(Activat...