Menu
How do I show Dependency Injection of an object or class in a UML class diagram?
334
You can use dependency relationships in class diagrams, component diagrams, deployment diagrams, and use-case diagrams to indicate that a change to the supplier might require a change to the client. You can also use a dependency relationship to represent precedence, where one model element must precede another.
In the UML, this is indicated by a dashed line pointing from the dependent (or client) to the independent (or supplier) element. The arrow representing a Dependency specifies the direction of a relationship, not the direction of a process.
On a class diagram, public messages (and any public attributes) are shown with a plus sign ( ) in front of them. Methods also have parentheses after them, indicating that data may be passed as parameters along with the message. The message parameters, as well as the type of data, may be included on the class diagram.
Dependency Injection (DI) is a design pattern used to implement IoC. It allows the creation of dependent objects outside of a class and provides those objects to a class through different ways. Using DI, we move the creation and binding of the dependent objects outside of the class that depends on them.
Martin Fowler shows it like this:
136
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
