public Dict FindByWord(string word, FTLangLabel lang)
{
var sql = string.Format(
"SELECT {1}, {2}, {3}, {4} FROM {0} WHERE {2} = ${2} AND ({4} = ${4} OR {4} = {5}) ",
TableName
, Dict.FldnId, Dict.FldnWord, Dict.FldnVect, Dict.FldnLangId, (int)FTLangLabel.NotSpecified);
var cmd = Ctx.CreateCmd(sql);
cmd.Parameters.AddWithValue(Dict.FldnWord, word);
cmd.Parameters.AddWithValue(Dict.FldnLangId, (int)lang);
using (var rd = cmd.ExecuteReader())
{
while (rd.Read())
{
return new Dict
{
Id = rd.GetInt64(0),
Word = rd.GetString(1),
Vect = (byte[])rd[2],
Lang = (FTLangLabel)rd.GetInt32(3)
}
}
;
}
return(null);
}
}
public int ControlWordsIndex(bool is_enabled)
{
var sql = is_enabled
? $"CREATE INDEX IF NOT EXISTS inxWord{TableName} ON {TableName} ({Dict.FldnWord}, {Dict.FldnLangId})"
: $"DROP INDEX inxWord{TableName}";
var cmd = Ctx.CreateCmd(sql);
return(cmd.ExecuteNonQuery());
}
public long?SelectInxMax()
{
var sql = string.Format("SELECT MAX({1}) FROM {0}",
TableName, EmbedDict.FldnInx);
var cmd = Ctx.CreateCmd(sql);
var res = cmd.ExecuteScalar();
return(res == null || DBNull.Value.Equals(res) ? (long?)null : Convert.ToInt64(res));
}
public IEnumerable <string> GetWordsWithEmptyVect()
{
var sql = string.Format(
"SELECT {1} FROM {0} WHERE {2} IS NULL",
TableName, Dict.FldnWord, Dict.FldnVect);
var cmd = Ctx.CreateCmd(sql);
using (var rd = cmd.ExecuteReader())
{
while (rd.Read())
{
yield return(rd.GetString(0));
}
}
}
public IEnumerable <Dict> GetAll(FTLangLabel lang)
{
var sql = string.Format(
"SELECT {1}, {2}, {3}, {4} FROM {0} WHERE {4} = ${4}",
TableName
, Dict.FldnId, Dict.FldnWord, Dict.FldnVect, Dict.FldnLangId);
var cmd = Ctx.CreateCmd(sql);
cmd.Parameters.AddWithValue(Dict.FldnLangId, (int)lang);
using (var rd = cmd.ExecuteReader())
{
while (rd.Read())
{
yield return new Dict
{
Id = rd.GetInt64(0),
Word = rd.GetString(1),
Vect = (byte[])rd[2],
Lang = (FTLangLabel)rd.GetInt32(3)
}
}
;
}
}
