private bool Match(DynamicObject dynobj, string name)
{
var value = dynobj.GetMember(name);
foreach (var key in this.values.Keys)
{
if (key == "$exists")
{
if (!dynobj.Exists(name).Equals(this.GetMember(key)))
{
return(false);
}
else
{
continue;
}
}
if (key == "$lt")
{
if (!(((IComparable)value).CompareTo(this.EvaluateMember(key)) < 0))
{
return(false);
}
else
{
continue;
}
}
if (key == "$lte")
{
if (!(((IComparable)value).CompareTo(this.EvaluateMember(key)) <= 0))
{
return(false);
}
else
{
continue;
}
}
if (key == "$gt")
{
if (!(((IComparable)value).CompareTo(this.EvaluateMember(key)) > 0))
{
return(false);
}
else
{
continue;
}
}
if (key == "$gte")
{
if (!(((IComparable)value).CompareTo(this.EvaluateMember(key)) >= 0))
{
return(false);
}
else
{
continue;
}
}
if (key == "$ne")
{
if (value.Equals(this.EvaluateMember(key)))
{
return(false);
}
else
{
continue;
}
}
if (key == "$eq")
{
if (!value.Equals(this.EvaluateMember(key)))
{
return(false);
}
else
{
continue;
}
}
if (key == "$in")
{
if (!((IList)this.GetMember(key)).Contains(value))
{
return(false);
}
else
{
continue;
}
}
if (key == "$nin")
{
if (((IList)this.GetMember(key)).Contains(value))
{
return(false);
}
else
{
continue;
}
}
if (key == "$not")
{
if (((DynamicObject)this.GetMember(key)).Match(dynobj, name))
{
return(false);
}
else
{
continue;
}
}
if (key == "$or")
{
bool result = false;
foreach (var dobj in (IEnumerable <DynamicObject>) this.GetMember(key))
{
if (dobj.Match(dynobj, name))
{
result = true;
break;
}
}
if (!result)
{
return(false);
}
continue;
}
if (key == "$nor")
{
foreach (var dobj in (IEnumerable <DynamicObject>) this.GetMember(key))
{
if (dobj.Match(dynobj, name))
{
return(false);
}
}
continue;
}
if (key == "$and")
{
foreach (var dobj in (IEnumerable <DynamicObject>) this.GetMember(key))
{
if (!dobj.Match(dynobj, name))
{
return(false);
}
}
continue;
}
if (key == "$type")
{
Type type = (Type)this.GetMember(key);
if (!type.IsInstanceOfType(value))
{
return(false);
}
continue;
}
throw new InvalidOperationException(string.Format("Invalid operator '{0}'", key));
}
return(true);
}
public DynamicDocument FindOne(DynamicObject query = null, DynamicObject projection = null)
{
return(this.Find(query, projection).FirstOrDefault());
}
public DynamicObject Project(DynamicObject projection)
{
IList <string> names = this.GetInitialNames();
return(this.Project(projection, names));
}
public IEnumerable <object> Distinct(string field, DynamicObject query = null)
{
return(this.Find(query).Select(d => d.GetMember(field)).Distinct());
}