private static OrderedMultiDictionary<int, Article> GenerateArticles(int count)
{
var barcodes = new HashSet<string>();
Console.Write("Generating barcodes...");
while (barcodes.Count < count)
{
var barcode = RandomGenerator.GetRandomString(BarcodeLength);
barcodes.Add(barcode);
if (barcodes.Count % (count / 10) == 0)
{
Console.Write('.');
}
}
Console.Write("\n\nGenerating articles...");
var articles = new OrderedMultiDictionary<int, Article>(true);
foreach (var barcode in barcodes)
{
var vendor = RandomGenerator.GetRandomString(5);
var title = RandomGenerator.GetRandomString(7);
var price = RandomGenerator.GeneratRandomNumber(0, count);
var article = new Article(barcode, vendor, title, price);
articles.Add(price, article);
if (articles.Count % (count / 10) == 0)
{
Console.Write('.');
}
}
Console.WriteLine();
return articles;
}
public static void Main()
{
OrderedMultiDictionary<double, Article> articles = new OrderedMultiDictionary<double, Article>(true);
int range = 10000;
for (int i = 0; i < range; i++)
{
var article = new Article("barcode" + i, "vendor" + i, "title" + i, i);
articles.Add(article.Price, article);
}
int from = 5000;
int to = 5040;
//Make some duplications
for (int i = from; i < to - 30; i++)
{
var article = new Article("newBarcode" + i, "newVendor" + i, "newTitle" + i, i);
articles.Add(article.Price, article);
}
var articlesInGivenRange = articles.Range(from, true, to, true);
foreach (var article in articlesInGivenRange)
{
foreach (var item in article.Value)
{
Console.WriteLine("Title: {0}, Vendor: {1}, Barcode: {2}, Price: {3}",
item.Title, item.Vendor, item.Barcode, item.Price);
}
Console.WriteLine();
}
}
private static OrderedMultiDictionary<decimal, Article> GenerateArticles()
{
var articles = new OrderedMultiDictionary<decimal, Article>(true);
for (int i = 0; i < 100000; i++)
{
decimal randomPrice = random.GenerateRandomNumber(1, 1000000);
string randomTitle = random.GenerateRandomString(1, 5);
string randomVendor = random.GenerateRandomString(1, 5);
string randomBarcode = random.GenerateRandomString(1, 5);
var article = new Article(randomBarcode, randomVendor, randomTitle, randomPrice);
articles.Add(article.Price, article);
}
return articles;
}
static void Main()
{
OrderedMultiDictionary<double, Article> articles = new OrderedMultiDictionary<double, Article>(true);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
string line;
using (StreamReader reader = new StreamReader(@"..\..\data1500000.csv"))
{
line = reader.ReadLine();
while ((line = reader.ReadLine()) != null)
{
string[] content = line.Split(new char[] { ',', '"' }, StringSplitOptions.RemoveEmptyEntries);
Article article = new Article(content[0], content[1], content[2], double.Parse(content[3]));
if (articles.ContainsKey(article.Price))
{
articles[article.Price].Add(article);
}
else
{
articles.Add(article.Price, article);
}
}
}
stopwatch.Stop();
Console.WriteLine("Create and add 15k Articles: {0}", stopwatch.Elapsed);
stopwatch.Reset();
stopwatch.Restart();
var result = articles.Range(14556.0, true, 4665542.0, true);
stopwatch.Stop();
Console.WriteLine("Search: {0}", stopwatch.Elapsed);
Console.WriteLine(result.Count);
//To test with 1 500 000 mil Articles download 100mb file:
//http://www.4shared.com/rar/kBeJdHzA/data1500000.html
//http://www.filedropper.com/data1500000
//Create and add 1 500 000 mil Articles: 00:00:19.8488240
//Search: 00:00:00.0015390
//1394252
//Press any key to continue . . .
}
static void Main()
{
OrderedMultiDictionary<double, Article> articles = new OrderedMultiDictionary<double, Article>(true);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
string line;
using (StreamReader reader = new StreamReader(@".../../data.csv"))
{
line = reader.ReadLine();
while ((line = reader.ReadLine()) != null)
{
string[] content = line.Split(new char[] {',','"'}, StringSplitOptions.RemoveEmptyEntries);
string barcode = content[0];
string vendor = content[1];
string title = content[2];
double price = Double.Parse(content[3]);
Article currentArticle = new Article(barcode, vendor, title, price);
if (articles.ContainsKey(currentArticle.Price))
{
articles[currentArticle.Price].Add(currentArticle);
}
else
{
articles.Add(currentArticle.Price, currentArticle);
}
}
}
stopwatch.Stop();
Console.WriteLine("Create and Add 15 000 Articles: {0}", stopwatch.Elapsed);
stopwatch.Reset();
stopwatch.Restart();
var result = articles.Range(1234.0, true, 13456.0, true);
stopwatch.Stop();
Console.WriteLine("Search: {0}", stopwatch.Elapsed);
Console.WriteLine(result.Count);
}
public void Add(Article article)
{
this.articles.Add(article);
}