We can similarly indicate static operators and methods is static by underlining the entire line referring to them. In UML, we indicate a class is static by underlining its name in the first compartment of the class diagram. if we were to expose the private field bool with a public accessor, we would add a line to our class diagram with: $$ Indicating it should be declared private with the type bool.įor properties, we add a stereotype containing either get, set, or both. ![]() in the example above, the blended field is represented with: $$ We indicate fields with a typed element, i.e. For C#, this would correspond to the fields and properties of the class. The attributes in UML represent the state of an object. In the diagram above, we can see the Fruit class modeled on the right side. And the third compartment holds the operations of the class (in C#, these are the methods). The second compartment holds the attributes of the class (in C#, these are the fields and properties). The first compartment identifies the class - it contains the name of the class. In a UML class diagram, individual classes are represented with a box divided into three compartments, each of which is for displaying specific information: Indicates the private variable age must be greater than or equal to 0. The constraints are contained in a pair of curly braces after the typed element, and follow the pattern: $$ In UML visibility (what we would call access level in C#) is indicated with symbols, i.e.:Ī typed element can include a constraint indicating some restriction for the element. The pattern for defining a typed element is: $$ Fields and parameters are typed elements, as are method parameters and return values. Typed elements (as you might expect from the name) have a type. In the example above, we indicate the box represents an enumeration with theĪ second basic building block for UML diagrams is a typed element. Stereotypes consist of text enclosed in double less than and greater than symbols. But we often find ourselves in situations where we want to convey language-specific ideas, and the UML specification leaves room for this with stereotypes. For example, an Enum is broken into two compartments: These boxes are broken into compartments. UML class diagrams use boxes to represent units of code - i.e. UML class diagrams are largely composed of boxes - basically a rectangular border containing text. For the purposes of this class, we’re focusing on a single kind of diagram - the class diagram. Is 754 pages long, so there is a lot of information packed into it. Communication Diagram A communication diagram models the interactions between objects in terms of sequences of messages.Sequence Diagram A sequence diagram shows object interactions arranged in chronological sequences.Use-Case Diagram A use-case diagram identifies the kinds of users a software system will have, and how they work with the software. ![]() It is used to model data flow in a software system. Activity Diagram An activity diagram represents workflows in a step-by-step process for actions.Component Diagram A component diagram visualizes how the software system is broken into components, and how communication between those components is achieved. ![]()
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