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johanvergeer/property_injection.py

Last active July 11, 2021 13:00
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Revisions

  1. johanvergeer revised this gist Jul 11, 2021. 2 changed files with 12 additions and 3 deletions.
    9 changes: 9 additions & 0 deletions property_injection.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,9 @@
    class PersonService:
    @property
    def person_repo(self) -> PersonRepo:
    return PersonRepoFactory().create()

    def set_name(self, person_id: int, new_name: str) -> None:
    p = self.person_repo.find(person_id)
    p.name = new_name
    self.person_repo.add_or_update(p)
    6 changes: 3 additions & 3 deletions repository.py
    View file
    Original file line number Diff line number Diff line change
    @@ -1,6 +1,6 @@
    class PersonRepo(Protocol):
    @abstractmethod
    def add(self, person: Person) -> None:
    def add_or_update(self, person: Person) -> None:
    ...

    @abstractmethod
    @@ -16,7 +16,7 @@ class PersonRepoJson(PersonRepo):
    def __init__(self, file: Path) -> None:
    self.__file = file

    def add(self, person: Person) -> None:
    def add_or_update(self, person: Person) -> None:
    """add person to file"""

    def remove(self, person_id: int) -> None:
    @@ -27,7 +27,7 @@ def find(self, person_id: int) -> None:


    class PersonRepoSql(PersonRepo):
    def add(self, person: Person) -> None:
    def add_or_update(self, person: Person) -> None:
    """add person to database"""

    def remove(self, person_id: int) -> None:
  2. johanvergeer created this gist Jul 11, 2021.
    48 changes: 48 additions & 0 deletions repository.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,48 @@
    class PersonRepo(Protocol):
    @abstractmethod
    def add(self, person: Person) -> None:
    ...

    @abstractmethod
    def remove(self, person_id: int) -> None:
    ...

    @abstractmethod
    def find(self, person_id: int) -> None:
    ...


    class PersonRepoJson(PersonRepo):
    def __init__(self, file: Path) -> None:
    self.__file = file

    def add(self, person: Person) -> None:
    """add person to file"""

    def remove(self, person_id: int) -> None:
    """remove person from file"""

    def find(self, person_id: int) -> None:
    """find person in file"""


    class PersonRepoSql(PersonRepo):
    def add(self, person: Person) -> None:
    """add person to database"""

    def remove(self, person_id: int) -> None:
    """remove person from database"""

    def find(self, person_id: int) -> None:
    """find person in database"""


    class PersonRepoFactory:
    def create(self) -> PersonRepo:
    if os.getenv("PERSON_REPO_TYPE") == "json":
    return PersonRepoJson(Path(os.getenv("PERSON_REPO_PATH")))
    elif os.getenv("PERSON_REPO_TYPE) == "sql":
    return PersonRepoSql()
    else:
    raise ValueError()