Knowledge quiz

It's time to put what you've learned to the test, get 7 right to pass this week.

How do you allow the object factory class to create an object of a managed class, which object creation is defined private?

Choose the correct answer.

Use the class definition addition GLOBAL FRIENDS <object factory class name>.

You don’t have to, because the ABAP compiler detects object factory classes and grants create permissions automatically.

Use the class definition addition FACTORY <object factory class name>.

Use the class definition addition GLOBAL FACTORY <object factory class name>.

When object creation is managed by an object factory class, which class definition addition do you use in the managed class to prevent objects being created by anything other than the class itself and the named friends?

Choose the correct answer.

REALLY PRIVATE

CREATE PRIVATE

CONSTRUCTOR PRIVATE

FACTORY PRIVATE

Which of the following is an advantage of the presented dependency lookup compared to the other injection methods discussed in this course?

Choose the correct answer.

Dependency lookup allows injections on different levels, for example in unit tests and integration tests.

Dependency lookup is faster.

Dependency lookup fosters knowledge transfer.

Dependency lookup mixes the creation code with the usage code.

What is the responsibility of an object factory injector class?

Choose the correct answer.

To securely inject the code under test into the test code

To securely inject the object factory class into the code under test

To securely inject test doubles into an object factory

To securely inject test doubles into a depended-on component

Which of the following is an advantage of the dependency lookup with injector class presented in this course?

Choose the correct answer.

It provides a way for injecting interface implementations in test code and product code.

It is faster than a dependency lookup without injector class.

It limits the injection possibility to classes defined as FOR TESTING and provides a secure way to inject test doubles in tests.

It is cheaper than other injection methods.

Which measure allows the object factory injector class to change internals of the object factory class?

Choose the correct answer.

The object factory injector class is declared as a friend by the code under test.

The object factory injector class is declared as a friend by the object factory class.

The object factory injector class is declared as a friend by the depended-on components.

The object factory injector class is declared as FRIEND ALL and can therefore access all internals of all classes.

What is the responsibility of an object factory class?

Choose the correct answer.

To monitor object creation of all objects

To prevent the creation of all objects

To create objects of the object factory class

To create objects managed by the object factory

When a factory pattern is used, who should take the decision on whether a class implements the singleton pattern or not?

Choose the correct answer.

The class itself with a get_instance() method and a private constructor, as it is self-empowered.

The board of directors, as they lead the company.

The product architecture board, as they are in charge of the overall architecture.

The object factory class, as it has knowledge about the context in which the class is used.