/// <summary>
/// 生成查询过滤器
/// </summary>
/// <param name="jsonString"></param>
/// <returns></returns>
protected FilterDefinition <BsonDocument> FilterConvertor(string jsonString)
{
if (!string.IsNullOrWhiteSpace(jsonString) && jsonString.Contains("{") && jsonString.Contains("}")) ///若数据可以转换
{
var filterDict = Convertor.FromJsonToDict2(jsonString); ///转化成字典
var filterBuilder = Builders <BsonDocument> .Filter;
var filter = filterBuilder.Empty;
foreach (var item in filterDict)
{
var key = item.Key;
var value = item.Value;
if ("_id" == key.ToLower())
{
value = ObjectId.Parse(value.ToString());
}
else if (StringChecker.IsGUID(value.ToString()))
{
value = Guid.Parse(value.ToString());
}
else if (value is string && value.ToString().Contains("new Date"))
{
value = Convert.ToDateTime(value.ToString().Replace("new Date", string.Empty).Replace("(", string.Empty).Replace(")", string.Empty).Replace("'", string.Empty));
}
if (value is Dictionary <string, object> && (value as Dictionary <string, object>).ContainsKey("$gt"))
{
var temp = (value as Dictionary <string, object>)["$gt"];
var val = new object();
if (temp is string && temp.ToString().Contains("new Date"))
{
val = Convert.ToDateTime(temp.ToString().Replace("new Date", string.Empty).Replace("(", string.Empty).Replace(")", string.Empty).Replace("'", string.Empty));
}
filter &= filterBuilder.Gt(key, val);
}
else if (value is Dictionary <string, object> && (value as Dictionary <string, object>).ContainsKey("$lt"))
{
var temp = (value as Dictionary <string, object>)["$lt"];
var val = new object();
if (temp is string && temp.ToString().Contains("new Date"))
{
val = Convert.ToDateTime(temp.ToString().Replace("new Date", string.Empty).Replace("(", string.Empty).Replace(")", string.Empty).Replace("'", string.Empty));
}
filter &= filterBuilder.Lt(key, val);
}
else
{
filter &= filterBuilder.Eq(key, value);
}
}
if ("{}" == jsonString)
{
return(Builders <BsonDocument> .Filter.Empty);
}
//filter = filterBuilder.Eq("Status", "待执行") & filterBuilder.Gt("StartTime", DateTime.Now);
return(filter);
}
return(null);
}