행위패턴 : Template Method 패턴
메소드에서 알고리즘의 뼈대를 정의하는 패턴. C++의 Template 하고는 상관 없음.
코드에서의 중복을 피하기 위함 공통적인 작업흐름은 추상클래스쪽에 한번 정의하고, 나머지 다양한 구현들을 각각의 서브 클래스들에게 담당
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/**
An abstract class that is common to several games in
which players play against the others, but only one is
playing at a given time.
*/
abstract class Game {
/* Hook methods. Concrete implementation may differ in each subclass*/
protected int playersCount;
abstract void initializeGame();
abstract void makePlay(int player);
abstract boolean endOfGame();
abstract void printWinner();
/* A template method : */
public final void playOneGame(int playersCount) {
this.playersCount = playersCount;
initializeGame();
int j = 0;
while (!endOfGame()) {
makePlay(j);
j = (j + 1) % playersCount;
}
printWinner();
}
}
//Now we can extend this class in order
//to implement actual games:
class Monopoly extends Game {
/* Implementation of necessary concrete methods */
void initializeGame() {
// Initialize players
// Initialize money
}
void makePlay(int player) {
// Process one turn of player
}
boolean endOfGame() {
// Return true if game is over
// according to Monopoly rules
}
void printWinner() {
// Display who won
}
/* Specific declarations for the Monopoly game. */
// …
}
class Chess extends Game {
/* Implementation of necessary concrete methods */
void initializeGame() {
// Initialize players
// Put the pieces on the board
}
void makePlay(int player) {
// Process a turn for the player
}
boolean endOfGame() {
// Return true if in Checkmate or
// Stalemate has been reached
}
void printWinner() {
// Display the winning player
}
/* Specific declarations for the chess game. */
// …
}
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영준 (=hax0r)
https://www.hax0r.info
I am a passionate back-end developer always in hunger of learning new things and sharing what i have learned. who loves challenges, newest technologies and programming at all.