/// <summary>
/// Add terms in collection of all terms TermDocumentCountColl.
/// Try find term, if not exist, add with count 1 or add counter to existing term.
/// </summary>
/// <param name="terms"></param>
/// <returns></returns>
public int PutTermDocumentCounts(List <TermData> terms)
{
//TODO: document it why we lock if we user (Connection = ConnectionType.Shared) or we have plan not use share or LiteDB have bug about it? - 2020-12-22T09:18:47
lock (_lockerTermDocumentCountColl)
{
List <TermDocumentCountData> termDocumentCounts = new List <TermDocumentCountData>();
foreach (TermData term in terms)
{
TermDocumentCountData termDocumentCountData = GetTermDocumentCount(term.Term);
if (termDocumentCountData == null)
{
termDocumentCountData = new TermDocumentCountData
{
Term = term.Term,
Count = 1
};
termDocumentCounts.Add(termDocumentCountData);
//coll.Insert(tdcd);
}
else
{
termDocumentCountData.Count++;
termDocumentCounts.Add(termDocumentCountData);
//coll.Update(tdcd);
}
}
return(PutTermDocumentCounts(termDocumentCounts));
}
}
/// <summary>
/// Reduce number for each count in TermDocumentCountColl {term, count}
/// Delete {Document, List<TermData>} from DocumentTermsColl
/// ?Delete { term, documentId} from TermDocumentColl
/// 2020-12-23T10:12:38
/// </summary>
/// <param name="documentId"></param>
/// <returns></returns>
public bool DeleteDocument(string documentId)
{
lock (_lockerDocumentTermsColl)
{
DocumentTermsData documentTermsData = DocumentTermsColl.FindOne(d => d.Document == documentId);
if (documentTermsData != null)
{
//Reduce number for each count in TermDocumentCountColl {term, count}
lock (_lockerTermDocumentCountColl)
{
foreach (TermData termData in documentTermsData.Terms)
{
TermDocumentCountData termDocumentCountData = TermDocumentCountColl.FindOne(d => d.Term == termData.Term);
if (termDocumentCountData != null)
{
termDocumentCountData.Count--;
TermDocumentCountColl.Update(termDocumentCountData);
}
}
//Delete {Document, List<TermData>} from DocumentTermsColl
return(DocumentTermsColl.Delete(documentTermsData.Id));
}
}
return(false);
}
}