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Corrected ItemWrapperContext to implement strategy pattern correctly.

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This commit is contained in:
israel 2017-10-20 13:25:16 +01:00
parent f6db7aa935
commit 44cf4d4eb1
2 changed files with 20 additions and 68 deletions
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78
csharp/StrategyPatternExample/CategoryStrategiesFactory.cs
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@ -7,49 +7,19 @@ namespace csharp.StrategyPatternExample
/// <summary> /// <summary>
/// This class is responsible for providing a category strategy to a given item. /// This class is responsible for providing a category strategy to a given item.
/// </summary> /// </summary>
internal class CategoryStrategiesFactory static internal class CategoryStrategiesFactory
{ {
#region Variables
static private CategoryStrategiesFactory _strategiesFactory = null;
#endregion
#region Constructor
private CategoryStrategiesFactory() { }
#endregion
#region Methods #region Methods
public static CategoryStrategiesFactory GetInstance() static public ICategoryStrategy GetCategoryStrategies(Item item)
{ {
if (_strategiesFactory == null) switch (item.Name)
{ {
_strategiesFactory = new CategoryStrategiesFactory(); case Global.NAME_ITEM_AGED_BRIE:
} return new OlderIsBetterStrategy();
return _strategiesFactory; case Global.NAME_ITEM_BACKSTAGE_PASSES:
} return new CloseExpiredImproveQualityStrategy(new List<CloseExpiredImproveQualityStrategy.NextExpiredCondition>() {
public List<ICategoryStrategy> GetCategoryStrategies(Item item)
{
List<ICategoryStrategy> listCategoryStrategies = new List<ICategoryStrategy>();
if (item.Name == Global.NAME_ITEM_AGED_BRIE)
{
listCategoryStrategies = new List<ICategoryStrategy>()
{
new OlderIsBetterStrategy()
};
}
else if (item.Name == Global.NAME_ITEM_BACKSTAGE_PASSES)
{
listCategoryStrategies = new List<ICategoryStrategy>()
{
new CloseExpiredImproveQualityStrategy(new List<CloseExpiredImproveQualityStrategy.NextExpiredCondition>() {
new CloseExpiredImproveQualityStrategy.NextExpiredCondition() new CloseExpiredImproveQualityStrategy.NextExpiredCondition()
{ {
SellInLimit = 5, SellInLimit = 5,
@ -60,31 +30,17 @@ namespace csharp.StrategyPatternExample
SellInLimit = 10, SellInLimit = 10,
Increment = 2 Increment = 2
} }
}) });
};
}
else if (item.Name == Global.NAME_ITEM_SULFURAS)
{
listCategoryStrategies = new List<ICategoryStrategy>()
{
};
}
else if (item.Name == Global.NAME_ITEM_CONJURED)
{
listCategoryStrategies = new List<ICategoryStrategy>()
{
new TwiceFastDegradeQualityStrategy()
};
}
else
{
listCategoryStrategies = new List<ICategoryStrategy>()
{
new NormalDegradeStrategy()
};
}
return listCategoryStrategies; case Global.NAME_ITEM_SULFURAS:
return new DoNothingStrategy();
case Global.NAME_ITEM_CONJURED:
return new TwiceFastDegradeQualityStrategy();
default:
return new NormalDegradeStrategy();
}
} }
#endregion #endregion

10
csharp/StrategyPatternExample/ItemWrapperContext.cs
View File

@ -11,7 +11,7 @@ namespace csharp.StrategyPatternExample
#region Variables #region Variables
private Item _item; private Item _item;
private List<ICategoryStrategy> listCategoryStrategies; private ICategoryStrategy strategy;
#endregion #endregion
@ -42,8 +42,7 @@ namespace csharp.StrategyPatternExample
public ItemWrapperContext(Item item) public ItemWrapperContext(Item item)
{ {
this._item = item; this._item = item;
this.strategy = CategoryStrategiesFactory.GetCategoryStrategies(item);
listCategoryStrategies = CategoryStrategiesFactory.GetInstance().GetCategoryStrategies(item);
} }
#endregion #endregion
@ -52,10 +51,7 @@ namespace csharp.StrategyPatternExample
public void UpdateQuality() public void UpdateQuality()
{ {
foreach (ICategoryStrategy categoryStrategyItem in this.listCategoryStrategies) strategy.Update(this._item);
{
categoryStrategyItem.Update(this._item);
}
} }
#endregion #endregion