protected override Query HandleQuotedTerm(string field, Token termToken, Token slopToken)
{
string termImage = termToken.Image.Substring(1, termToken.Image.Length - 2);
if (Str.Equals(Like, field))
{
return(getMoreLikeQuery(termImage, slopToken));
}
return(base.HandleQuotedTerm(field, termToken, slopToken));
}
protected override Query HandleBareTokenQuery(string field, Token termToken, Token slopToken, bool prefix, bool wildcard, bool fuzzy, bool regexp)
{
if (Str.Equals(Like, field))
{
if (prefix || wildcard || regexp || fuzzy)
{
return(_matchNothingQuery);
}
return(getMoreLikeQuery(termToken.Image, slopToken));
}
return(base.HandleBareTokenQuery(field, termToken, slopToken, prefix, wildcard, fuzzy, regexp));
}
private static float parseSlop(Token fuzzySlop)
{
if (fuzzySlop == null)
{
return(0f);
}
if (fuzzySlop.Image.Length <= 1)
{
return(0f);
}
float.TryParse(fuzzySlop.Image.Substring(1), NumberStyles.Float, Str.Culture, out var slop);
return(slop);
}
private Query getMoreLikeQuery(string termImage, Token slopToken)
{
string unescaped = StringEscaper.Unescape(termImage);
float slop = parseSlop(slopToken);
if (string.IsNullOrEmpty(unescaped))
{
return(MatchNothingQuery);
}
if (!_repository.IsLoadingComplete.Signaled)
{
return(MatchNothingQuery);
}
string name = unescaped.RemoveDiacritics();
var result = new DisjunctionMaxQuery(0.1f);
addClauses(isToken: false);
addClauses(isToken: true);
return(result.Disjuncts.Count == 0
? MatchNothingQuery
: result);
void addClauses(bool isToken)
{
if (!_repository.MapByName(isToken).TryGetValue(name, out var list))
{
return;
}
Card c = list[0];
if (!string.IsNullOrEmpty(c.TextEn))
{
result.Add(createMoreLikeThisQuery(slop, c.TextEn, nameof(Card.TextEn)));
}
if (!string.IsNullOrEmpty(c.GeneratedMana))
{
result.Add(createMoreLikeThisQuery(slop, c.GeneratedMana, nameof(Card.GeneratedMana)));
}
}
}
private Query getMoreLikeQuery(string termImage, Token slopToken)
{
string unescaped = StringEscaper.Unescape(termImage);
float slop = parseSlop(slopToken);
if (string.IsNullOrEmpty(unescaped))
{
return(_matchNothingQuery);
}
if (!_repository.IsLoadingComplete)
{
return(_matchNothingQuery);
}
string cardName = unescaped.RemoveDiacritics();
if (!_repository.CardsByName.TryGetValue(cardName, out var cards))
{
return(_matchNothingQuery);
}
var card = cards[0];
var result = new DisjunctionMaxQuery(0.1f);
if (!string.IsNullOrEmpty(card.TextEn))
{
result.Add(createMoreLikeThisQuery(slop, card.TextEn, nameof(card.TextEn)));
}
if (!string.IsNullOrEmpty(card.GeneratedMana))
{
result.Add(createMoreLikeThisQuery(slop, card.GeneratedMana, nameof(card.GeneratedMana)));
}
if (result.Disjuncts.Count == 0)
{
return(_matchNothingQuery);
}
return(result);
}