Created
December 14, 2017 10:20
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What the OOP is about?
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| // procedular programming | |
| @Value | |
| class IdProvider { | |
| private final String id; | |
| private final String email; | |
| // getters | |
| } | |
| RemotePerson find(Person person) { | |
| return remoteClient.find(new IdProvider(person.getId(), person.getEmail())); | |
| } | |
| // vs. oop programming | |
| interface IdProvider { | |
| String id(); | |
| String email(); | |
| } | |
| RemotePerson find(Person person) { | |
| return remoteClient.find(new PersonIdProvider(person)); | |
| } | |
| // implementation | |
| class PersonIdProvider implements IdProvider { | |
| private final Person person; | |
| PersonIdProvider(Person person) { | |
| this.person = person; | |
| } | |
| public String id() { | |
| return person.getId(); | |
| } | |
| public String email() { | |
| return person.getEmail(); | |
| } | |
| } |
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one could say procedular is not bad;
but procedural takes your data in an offensive way; without even asking;
on the other hand: oop is mainly about objects compositoin;
i am not taking data from you; i am just telling WHAT you are (a PersonIdProvider);
it's your job to provide me required data; if you want you can throw exception, you can do some calculations, etc;
but it is your responsibiliy; I trust you (!)
in proceduarl programming I am offensive to you; I dont trust you at all, I just want this dumb data from you, and I let you go, I don't care about you;