public static MealItem FromBson(BsonDocument doc)
{
if (doc == null)
{
return(null);
}
if (!doc.ExistFiled("ID"))
{
return(null);
}
return(new MealItem()
{
ID = doc.TryReadLong("ID"),
PlanID = doc.TryReadLong("PlanID"),
Name = doc.TryReadString("Name"),
Count = doc.TryReadDouble("Count"),
NBDID = doc.TryReadString("NBDID"),
Unit = doc.TryReadString("Unit"),
Tags = doc.TryReadArray("Tags").ToArray(),
Type = doc.TryReadString("Type"),
Description = doc.TryReadString("Description"),
Createtime = doc.TryReadDate("Createtime").Value,
UpdateTime = doc.TryReadDate("UpdateTime").Value,
});
}
public static string TryReadString(this BsonDocument doc, string name)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull)
{
return(string.Empty);
}
return(doc[name].ToString());
}
public static long TryReadLong(this BsonDocument doc, string name)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull)
{
return(0);
}
return((long)doc[name]);
}
public static bool TryReadBool(this BsonDocument doc, string name)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull)
{
return(false);
}
return((bool)doc[name]);
}
public static IEnumerable <T> TryReadArray <T>(this BsonDocument doc, string name, Func <BsonValue, T> ctor)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull || !(doc[name].IsBsonArray))
{
yield break;
}
foreach (var p in (BsonArray)doc[name])
{
yield return(ctor(p));
}
}
public static IEnumerable <string> TryReadArray(this BsonDocument doc, string name)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull || !(doc[name].IsBsonArray))
{
yield break;
}
foreach (var p in (BsonArray)doc[name])
{
yield return(p.ToString());
}
}
public static double TryReadDouble(this BsonDocument doc, string name)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull)
{
return(0);
}
try
{
return(double.Parse(doc[name].ToString()));
}
catch { return(0); }
}
public static int TryReadInt(this BsonDocument doc, string name)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull)
{
return(0);
}
try
{
return((int)doc[name]);
}
catch { return(0); }
}
public static T TryReadObject <T>(this BsonDocument doc, string name, Func <BsonDocument, T> ctor)
{
if (!doc.ExistFiled(name) || doc[name].IsBsonNull)
{
return(default(T));
}
var attr = doc[name] as BsonDocument;
if (attr == null)
{
return(default(T));
}
return(ctor(attr));
}
public static DateTime?TryReadDate(this BsonDocument doc, string name)
{
string filedName = name;
if (!doc.ExistFiled(name, out filedName) || doc[filedName].IsBsonNull)
{
return(null);
}
var value = doc[filedName];
if (value.IsValidDateTime)
{
return(((BsonDateTime)doc[filedName]).ToUniversalTime());
}
return(null);
}
public static MealPlan FromBson(BsonDocument doc)
{
if (doc == null)
{
return(null);
}
if (!doc.ExistFiled("ID"))
{
return(null);
}
return(new MealPlan()
{
ID = doc.TryReadLong("ID"),
Name = doc.TryReadString("Name"),
Tags = doc.TryReadArray("Tags").ToArray(),
Description = doc.TryReadString("Description"),
Createtime = doc.TryReadDate("Createtime").Value,
UpdateTime = doc.TryReadDate("UpdateTime").Value,
});
}
