public static void BuildProductIdentitiesDict(string connProductString)
{
var cacheKey = "ProductIdentitiesDict";
var cacheServer = CacheManager.GetCacheServer("ProductIdentity");
ProductIdentitiesDict = cacheServer.Get <Dictionary <int, List <WebProductIdentity> > >(cacheKey, true);
if (ProductIdentitiesDict == null)
{
var startTime = DateTime.Now;
ProductIdentitiesDict = new Dictionary <int, List <WebProductIdentity> >();
var listProductIdentities = ProductIdentityBAL.GetListCompletedProductIdentity(connProductString);
var getDBDuration = (DateTime.Now - startTime).TotalSeconds;
startTime = DateTime.Now;
foreach (var productIdentity in listProductIdentities)
{
var webProductIdentity = new WebProductIdentity()
{
SynonymsKeywordSet = new List <SynonymsKeywordHash>(),
KeywordBlackList = new List <int>(),
ProductID = productIdentity.ProductID,
MinPrice = productIdentity.MinPrice,
MaxPrice = productIdentity.MaxPrice
};
foreach (var synonymsKeywords in productIdentity.KeywordSets)
{
var listHash = new List <int>();
foreach (var keyword in synonymsKeywords.SynonymKeywords)
{
listHash.Add(Tools.getCRC32(AutoCorrector.Correct(keyword.Replace('-', ' ')).ToLower()));
}
webProductIdentity.SynonymsKeywordSet.Add(new SynonymsKeywordHash(listHash));
}
foreach (var keyword in productIdentity.ExcludeKeywords)
{
webProductIdentity.KeywordBlackList.Add(Tools.getCRC32(AutoCorrector.Correct(keyword.Replace('-', ' ')).ToLower()));
}
foreach (var synonymsKeywords in webProductIdentity.SynonymsKeywordSet)
{
foreach (var hash in synonymsKeywords.KeywordHashList)
{
if (ProductIdentitiesDict.ContainsKey(hash))
{
ProductIdentitiesDict[hash].Add(webProductIdentity);
}
else
{
ProductIdentitiesDict.Add(hash, new List <WebProductIdentity> {
webProductIdentity
});
}
}
}
}
var buidDuration = (DateTime.Now - startTime).TotalSeconds;
Log.InfoFormat("Build ProductIdentities Dict. GetDB Time: {0}, Build Time: {1} s", getDBDuration,
buidDuration);
cacheServer.Set(cacheKey, ProductIdentitiesDict, true, new TimeSpan(20, 0, 0, 0));
}
}
public static long IdentifyProduct(string name, long price)
{
long result = 0;
if (string.IsNullOrEmpty(name))
{
result = 0;
}
else
{
name = AutoCorrector.Correct(name.Replace('-', ' ').Replace('/', ' ').ToLower());
var length = name.Split(' ').Length;
var ngrams = new List <string>();
for (int i = 1; i <= length; i++)
{
ngrams.AddRange(Tools.NGram(i, name));
}
var hashSet = new HashSet <int>();
for (int i = 0; i < ngrams.Count; i++)
{
var stringHash = Tools.getCRC32(ngrams[i]);
if (!hashSet.Contains(stringHash))
{
hashSet.Add(stringHash);
}
}
var productIdentitySet = new Dictionary <long, WebProductIdentity>();
foreach (var hash in hashSet)
{
if (ProductIdentitiesDict.ContainsKey(hash))
{
foreach (var webProductIdentity in ProductIdentitiesDict[hash])
{
if (!productIdentitySet.ContainsKey(webProductIdentity.ProductID))
{
productIdentitySet.Add(webProductIdentity.ProductID, webProductIdentity);
}
}
}
}
foreach (var webProductIdentity in productIdentitySet)
{
if (webProductIdentity.Value.Identify(hashSet, price))
{
result = webProductIdentity.Value.ProductID;
break;
}
}
}
return(result);
}
