public Product(string name, ProductType type)
{
_id = Guid.NewGuid();
_name = name;
_type = type;
}
public ArrayList QueryProductsByType(ProductType type)
{
ArrayList result = new ArrayList();
foreach (Product p in _products.Values)
{
if (p.ProductType == type)
{
result.Add(p);
}
}
return result;
}
static void Main(string[] args)
{
int outerLoop = 100;
int innerLoop = 1000;
if (2 == args.Length)
{
outerLoop = int.Parse(args[0]);
innerLoop = int.Parse(args[1]);
}
else
{
Console.WriteLine("ObjectOperations [OuterLoop InnerLoop]");
}
Random random = new Random();
ProductType[] types = new ProductType[]
{
new ProductType("dvds", "DVDs"),
new ProductType("cds", "CDs"),
new ProductType("lps", "LPs"),
new ProductType("actionfigures", "Action Figures")
};
ProductCatalog catalog = new ProductCatalog();
foreach (ProductType pt in types)
{
catalog.AddProductType(pt);
}
TimeSpan total = TimeSpan.Zero;
for (int i=0; i<outerLoop; ++i)
{
DateTime start = DateTime.Now;
int j=0;
for (; j<innerLoop; ++j)
{
ProductType pt = types[random.Next(0, types.Length)];
Product product = new Product(string.Format("product {0}, {1}", i, j), pt);
catalog.AddProduct(product);
}
DateTime stop = DateTime.Now;
TimeSpan elapsed = stop - start;
total += elapsed;
Console.WriteLine("It takes {0}ms to add {1} objects after the collection already has {2}.", elapsed.TotalMilliseconds, j, catalog.ProductCount - j);
}
Console.WriteLine("It takes {0}ms to construct and add {1} objects to a hashtable.", total.TotalMilliseconds, catalog.ProductCount);
foreach (ProductType pt in types)
{
DateTime start = DateTime.Now;
ArrayList found = catalog.QueryProductsByType(pt);
TimeSpan elapsed = DateTime.Now - start;
Console.WriteLine("It takes {0}ms to select {1} {2} from the collection of {3} products.", elapsed.TotalMilliseconds, found.Count, pt.Label, catalog.ProductCount);
start = DateTime.Now;
Guid productID = ((Product)found[found.Count-1]).ID;
Product p = catalog[productID];
elapsed = DateTime.Now - start;
Console.WriteLine("It takes {0}ms to access a product by its ID.", elapsed.TotalMilliseconds);
start = DateTime.Now;
foreach (Product existing in found)
{
if (productID == existing.ID)
{
break;
}
}
elapsed = DateTime.Now - start;
Console.WriteLine("It takes {0}ms to perform {1} Guid comparisons", elapsed.TotalMilliseconds, found.Count);
// Test the worst sorting case
start = DateTime.Now;
found.Sort(InverseProductNameComparer.Default);
elapsed = DateTime.Now - start;
Console.WriteLine("It takes {0}ms to sort an ArrayList with {1} elements using a static bound comparer.", elapsed.TotalMilliseconds, found.Count);
// worst sorting case again...
start = DateTime.Now;
found.Sort(new Bamboo.Prevalence.Collections.ObjectPropertyComparer(typeof(Product), "Name"));
elapsed = DateTime.Now - start;
Console.WriteLine("It takes {0}ms to sort an ArrayList with {1} elements using a dynamic bound comparer.", elapsed.TotalMilliseconds, found.Count);
}
TimeXPathQuery(catalog);
System.GC.Collect();
Console.WriteLine("This process is using {0} bytes to hold {1} products.", Environment.WorkingSet, catalog.ProductCount);
}
public void AddProductType(ProductType type)
{
_productTypes.Add(type);
}
