All Questions
16 questions
2
votes
4
answers
3k
views
I wrote a class with "init" method. Should I call it from other class methods? Or leave it to the object user? (Code Design)
I have a java class with an init method. It's different from the constructor. The constructor just initializes the variables/fields. The init method connects to a database and performs some ...
- 131
3
votes
4
answers
780
views
Is it a bad practice to have an interface method to tell whether it can handle an object?
interface Resolver {
boolean canResolve(SomeInput input);
SomeOutput resolve(SomeInput input);
}
public static void main(String[] args) {
List<Resolver> resolvers = ...;
...
- 141
0
votes
3
answers
202
views
When using a DSL to structure my application, should I favor coupling the code with the DSL, or trying to have majority of my code independent of it?
We're currently using the Apache Camel Java DSL to structure our application, but I guess this question can mostly apply to any DSL in general.
Now, amongst our developers, we are divided on two polar ...
2
votes
1
answer
274
views
Is it OK to deprecate methods that need to be public due to the packaging model but are not to be used outside the codebase in Java?
I am currently working on a semi-large project that has several packages. There are 3 main packages, a "client" package, a "server" package and a "common" package. There are two jars, one for the ...
- 889
0
votes
1
answer
1k
views
Automatically create or update object in database
I have a database class with the following interface:
public Database {
//returns false if p (its ID) is already available
//otherwise adds p the the list and returns true
public boolean ...
- 123
3
votes
3
answers
2k
views
Parallel Class/Interface Hierarchy with the Facade Design Pattern?
About a third of my code is wrapped inside a Facade class. Note that this isn't a "God" class, but actually represents a single thing (called a Line). Naturally, it delegates responsibilities to the ...
- 1,311
4
votes
2
answers
1k
views
Can classes violate Single Responsibility if they delegate internal tasks?
I have two classes Output and Timeline, neither of which violate SR, but the two of them are linked together. So what I'd like to do is have a class called Elco (there's a reason behind the name) that ...
- 1,311
1
vote
1
answer
333
views
Creating Set Subclasses or Allowing Outside Configuration
I have a TriggerCaller and a TriggerAction class. The Caller "calls" the do() method on the action, which is set with the TriggerCallers setAction() method. The rest of the program should deal with ...
- 1,311
2
votes
2
answers
2k
views
if i have many calls of single method that returns field value, is it better to make a local variable?
In a method, i have calls of single method of another object that returns field value, like foo.value(), which is defined like Field value() {return this.value;} Is it better to make a local variable, ...
- 339
1
vote
2
answers
953
views
Making subclass more type-specific with accessors
I have a super class: TriggerManager with a subclass TimedTriggerManager. NOTE: I'm working in java
TimedTriggerManager only deals with TimedTrigger s, a subclass of Trigger. TriggerManager ...
- 1,311
4
votes
2
answers
5k
views
How to delete an object when other things reference it (and not making the code full of inter-dependencies)
The situation:
In my program, there are a list of cues. To call a cue at a certain time, there are objects called Triggers. Cues have many public methods that allow them, among other things, to be "...
- 1,311
6
votes
4
answers
7k
views
Is it bad programming practice to check if a class referenced by its interface is an instance of another class?
I have a class (Timer) with an array list of Timable objects. Timeable is an interface. There is some specific functionality that I need for the Trigger class (implements Timable), which has a ...
- 1,311
0
votes
1
answer
83
views
How to record/store edits?
In many programs and web apps (stack exchange included) the program is able to backtrack what edits where made to the piece. My issue is similar: I want to be able to store a "timeline" of edits, ...
- 1,311
7
votes
3
answers
384
views
When module calling gets ugly
Has this ever happened to you? You've got a suite of well designed, single-responsibility modules, covered by unit tests. In any higher-level function you code, you are (95% of the code) simply ...
- 736
56
votes
3
answers
74k
views
Which is a better practice - helper methods as instance or static?
This question is subjective but I was just curious how most programmers approach this. The sample below is in pseudo-C# but this should apply to Java, C++, and other OOP languages as well.
Anyway, ...
- 663