public IEnumerator <BestBetsMatch> GetEnumerator()
{
// Create a list for the main category.
var mainList =
from item in new Array[1]
select new { Synonym = _bestBet.Name, IsExact = _bestBet.IsExactMatch, IsNegated = false };
// Create a list for each of the Include synonyms
var includeList =
from item in _bestBet.IncludeSynonyms
select new { Synonym = item.Text, IsExact = item.IsExactMatch, IsNegated = false };
// Create a list for each of the Exclude synonyms
var excludeList =
from item in _bestBet.ExcludeSynonyms
select new { Synonym = item.Text, IsExact = item.IsExactMatch, IsNegated = true };
// Combine the lists and return the actual BestBetMatch objects.
// NOTE: The assumption is that there are no duplicates. Union would
// remove duplicates, but at the cost of additional processing.
foreach (var item in mainList.Concat(includeList).Concat(excludeList))
{
int tokenCount = -1;
try
{
//TODO: Uh, do we need to clean the synonym?????????
tokenCount = _tokenAnalyzer.GetTokenCount(item.Synonym);
}
catch (Exception ex)
{
throw new Exception(
"Error in getting token count for: "
+ _bestBet.Name + ", Synonym: ," + item.Synonym, ex);
}
// Return a new object each time rather than update an existing object
// that might be referenced/used somewhere else.
yield return(new BestBetsMatch()
{
Category = _bestBet.Name,
ContentID = _bestBet.ID,
Synonym = item.Synonym,
Language = _bestBet.Language,
IsNegated = item.IsNegated,
IsExact = item.IsExact,
TokenCount = tokenCount
});
}
}
/// <summary>
/// Gets a list of the BestBet Category IDs that matched our term
/// </summary>
/// <param name="language">The two-character language code to constrain the matches to</param>
/// <param name="cleanedTerm">A term that have been cleaned of punctuation and special characters</param>
/// <returns>An array of category ids</returns>
public string[] GetMatches(string language, string cleanedTerm)
{
// Step 2. Get Number of Tokens in the term
int numTokens = _tokenAnalyzer.GetTokenCount(cleanedTerm);
// Step 4. Iterate over the matches
IEnumerable <BestBetsMatch> matches = GetBestBetMatches(
cleanedTerm,
language,
numTokens
);
// Step 5. Process the matches and extract only the category IDs we will
// be returning to the client
string[] validCategories = FilterValidCategories(matches, numTokens);
return(validCategories);
}