/// <summary>
/// Composes the filter used to search.
/// </summary>
/// <returns></returns>
private FilterDefinition <BsonDocument> ComposeFilter()
{
FilterDefinition <BsonDocument> filter = null;
for (int j = 0; j < QueryLists.Count; j++)
{
FilterDefinition <BsonDocument> rowFilter = null;
RowEquivilators rowE = QueryLists[j][0].CombineRowsValue;
int i = 0;
try
{
rowFilter = QueryLists[j][0].ToString();
for (i = 1; i < QueryLists[j].Count; i++)
{
rowFilter = CombineFilters(rowFilter, QueryLists[j][i].ToString(), rowE, false);
}
}
catch (NullReferenceException)
{
throw new QueryImproperLayoutException(j, i, string.Empty);
}
if (filter == null)
{
filter = rowFilter;
}
else
{
bool isEnd = (j == QueryLists.Count - 1);
filter = CombineFilters(filter, rowFilter, QueryLists[j][QueryLists[j].Count - 1].CombineRowsValue, isEnd);
}
}
return(filter);
}
/// <summary>
/// Combines fitlers.
/// </summary>
/// <param name="filter1"></param>
/// <param name="filter2"></param>
/// <param name="equivilator"></param>
/// <param name="isEnd"></param>
/// <returns></returns>
private FilterDefinition <BsonDocument> CombineFilters(FilterDefinition <BsonDocument> filter1,
FilterDefinition <BsonDocument> filter2, RowEquivilators equivilator, bool isEnd)
{
switch (equivilator)
{
case RowEquivilators.And:
filter1 &= filter2;
break;
case RowEquivilators.Or:
filter1 |= filter2;
break;
case RowEquivilators.None:
if (!isEnd)
{
throw new QueryImproperLayoutException(0, 0, (object)RowEquivilators.None);
}
break;
}
return(filter1);
}
public UpdateValueType(RowEquivilators row) => Row = row;
