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odennZero/strategy-pattern-example.cs

Last active August 29, 2015 14:21
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Strategy Pattern Example
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strategy-pattern-example.cs
public class Librarian {
// librarian sort strategy storage
protected ISortStrategy sortStrategy;
public void SetSortType(ISortStrategy sortStrategy) {
this.sortStrategy = sortStrategy;
}
public void SortBooks(List<Books> books) {
if (sortStrategy != null)
sortStrategy.Sort(List<Books> books);
}
}
// sort interface
public interface ISortStrategy {
void Sort(List<Books> books);
}
public class SortAlpha : ISortStrategy {
public void Sort(List<Books> books) {
// alphabetical sort
}
}
public class SortDate : ISortStrategy {
public void Sort(List<Books> books) {
// publish date sort
}
}
// example use
public class Program {
public static void Main(string[] args) {
var books = new List<Books>();
var lib = new Librarian();
lib.SetSortType(new SortAlpha());
lib.SortBooks(books); // sorts the books alphabetically
lib.SetSortType(new SortDate());
lib.SortBooks(books); // sorts the books by publication date
}
}
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