public void Operation(SomeObject uniqueState)
{
string shared = JsonConvert.SerializeObject(_sharedState);
string unique = JsonConvert.SerializeObject(uniqueState);
Console.WriteLine($"Flyweight: Displaying shared {shared} and unique {unique} state.");
}
private (bool, string) IsExistFlyweight(SomeObject someObject)
{
string key = GetKey(someObject);
var result = flyweights.Where(t => t.Item2 == key).Count() > 0;
return(result, key);
}
private void AddFlyweight(SomeObject someObject)
{
var flyweight = new Flyweight(someObject);
var key = GetKey(someObject);
var tupleObject = new Tuple <Flyweight, string>(flyweight, key);
flyweights.Add(tupleObject);
}
private string GetKey(SomeObject key)
{
var elements = new List <string> {
key.Name, key.Body
};
elements.Sort();
return(string.Join("_", elements));
}
private void AddObjectToStorage(FlyweightFactory factory, SomeObject someObject)
{
Console.WriteLine("\nNew object adding to virtual storage.");
var newObject = new SomeObject {
Id = someObject.Id, Name = someObject.Name, Body = someObject.Body
};
var flyweight = factory.GetFlyweight(newObject);
flyweight.Operation(someObject);
}
public Flyweight GetFlyweight(SomeObject someObject)
{
var(isExistFlyweight, key) = IsExistFlyweight(someObject);
if (isExistFlyweight)
{
Console.WriteLine("FlyweightFactory: Reusing existing flyweight.");
}
else
{
Console.WriteLine("FlyweightFactory: Can't find a flyweight, creating new one.");
AddFlyweight(someObject);
}
return(flyweights.Where(t => t.Item2 == key).FirstOrDefault().Item1);
}
public void Start()
{
var object1 = new SomeObject {
Id = 1, Name = "Name1", Body = "Body1"
};
var object2 = new SomeObject {
Id = 2, Name = "Name2", Body = "Body2"
};
var object3 = new SomeObject {
Id = 3, Name = "Name3", Body = "Body3"
};
var factory = new FlyweightFactory(object1, object2, object3);
factory.ListFlyweights();
var object4 = new SomeObject {
Id = 4, Name = "Name4", Body = "Body4"
};
var object5 = new SomeObject {
Id = 5, Name = "Name5", Body = "Body5"
};
AddObjectToStorage(factory, object4);
AddObjectToStorage(factory, object5);
var object6 = new SomeObject {
Id = 6, Name = "Name5", Body = "Body5"
};
AddObjectToStorage(factory, object6);
Console.WriteLine();
factory.ListFlyweights();
}
public Flyweight(SomeObject someObject)
{
_sharedState = someObject;
}
