public static List <BsonDocument> Find(IEnumerable <BsonDocument> docs, BsonDocument doc, IEnumerable <string> fields)
{
List <BsonDocument> ret = null;
List <BsonDocument> sources = docs.ToList();
int fieldCount = fields.Count();
int i = 0; bool loop = true;
while (loop && i < fieldCount)
{
string field = fields.ElementAt(i);
ret = sources.Where(d => BsonHelper.GetString(d, field).Equals(BsonHelper.GetString(doc, field))).ToList();
if (ret == null || ret.Count == 0)
{
loop = false;
}
else
{
sources = ret;
}
i++;
}
if (ret == null)
{
ret = new List <BsonDocument>();
}
return(ret);
}
public static string GetString(this BsonDocument doc, string fieldName, string defaultValue = "")
{
string[] fields = fieldName.Split(new string[] { "." }, StringSplitOptions.RemoveEmptyEntries);
if (fields.Length == 1)
{
var val = doc.GetValue(fieldName, "");
string strVal = val.ToString();
if (String.IsNullOrEmpty(strVal) && defaultValue != "")
{
strVal = defaultValue;
}
return(strVal);
}
else
{
var newindex = String.Join(".", fields.Skip(1).ToArray());
return(BsonHelper.GetString(doc.GetValue(fields[0]).AsBsonDocument, newindex, defaultValue));
}
}