Ich versuche, ein Abfragedatum in Mongodb durchzuführen, aber das Ergebnis ist immer leer. Meine Anfrage lautet wie folgt:

//in the begin code
def __init__(self):
    self.now = datetime.now()
    self.db = conexaoMongo()
    self.horaInicio = self.now - timedelta(minutes=1)

def resultadoConsulta(self, modo, porta, id_node):
    #print "Porta e No ", porta, id_node
    resultadoMongo = []
    mediaFinal = False      
    try:

        json = {'id_no': int(id_node), 'datahora': {'$gte': self.horaInicio, '$lt': self.now}, 'porta': porta}

        print "COnsulta a ser realizada: ", json
        resultadoMongo = self.db.queryMongoOne(json) 

// Variable resultaMongo Rückgabe leer.

Obs: Ich habe es auch ohne .isoformat () versucht. Wenn ich mongodb direkt eingebe, werden nur Ergebnisse zurückgegeben, wenn ich ISODate hinzufüge. Gibt also keine Ergebnisse zurück:

db.inoshare.find( {'id_no': 1, 'datahora': {'$lte': '2014-09-24T07:52:04.945306', '$gte': '2014-09-24T07:51:04.958496'}, 'porta': 'A0'})

Mehr also, wenn Sie Retouren bearbeiten:

db.inoshare.find( {'id_no': 1, 'datahora': {'$lte': ISODate('2014-09-24T07:52:04.945306'), '$gte': ISODate('2014-09-24T07:51:04.958496')}, 'porta': 'A0'})

Dies ist eine Folge von Datensätzen in der Datenbank:

    { "_id" : ObjectId("5435be9ce7b9916e02ed2cb5"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:05Z"), "valor" : "917", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cb9"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:07Z"), "valor" : "932", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cbd"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:09Z"), "valor" : "189", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cc1"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:11Z"), "valor" : "853", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cc5"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:13Z"), "valor" : "202", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cc9"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:15Z"), "valor" : "398", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2ccd"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:17Z"), "valor" : "947", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cd1"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:19Z"), "valor" : "57", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cd5"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:21Z"), "valor" : "395", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cd9"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:23Z"), "valor" : "941", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2cdd"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:25Z"), "valor" : "208", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2ce1"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:27Z"), "valor" : "186", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2ce5"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:29Z"), "valor" : "848", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2ce9"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:31Z"), "valor" : "571", "sensor" : "1" }
    { "_id" : ObjectId("5435be9ce7b9916e02ed2ced"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:33Z"), "valor" : "351", "sensor" : "1" }
    { "_id" : ObjectId("5435be9de7b9916e02ed2cf1"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:35Z"), "valor" : "558", "sensor" : "1" }
    { "_id" : ObjectId("5435be9de7b9916e02ed2cf5"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:37Z"), "valor" : "449", "sensor" : "1" }
    { "_id" : ObjectId("5435be9de7b9916e02ed2cf9"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:39Z"), "valor" : "768", "sensor" : "1" }
    { "_id" : ObjectId("5435be9de7b9916e02ed2cfd"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:41Z"), "valor" : "542", "sensor" : "1" }
    { "_id" : ObjectId("5435be9de7b9916e02ed2d01"), "lab" : "2", "porta" : "A0", "id_no" : 1, "datahora" : ISODate("2014-09-24T07:51:43Z"), "valor" : "763", "sensor" : "1" }

wenn ich die JSON-Variable von Python drucke, sehe ich etwas wie:

{'id_no': 1, 'datahora': {'$gte': datetime.datetime(2014, 9, 24, 8, 21, 38, 527653), '$lt': datetime.datetime(2014, 9, 24, 8, 22, 36, 677022)}, 'porta': 'A1'}

Meine Mongndb-Klassenverbindung ist:

#!/usr/bin/python
from pymongo import MongoClient

class conexaoMongo:

    def __init__(self):
        self.conditions = []        
        self.client = MongoClient("127.0.0.1", 27017, safe=True)
        self.db = self.client['inoshare']
        self.ino = self.db.inoshare     


    def queryMongo(self, param1, param2=None, param3=None): 

        try:
            if param2 != None:
                results = self.ino.find(param1, param2)
            elif param3 != None:
                results = self.ino.find(param1, param2, param3)
            else:               
                results = self.ino.find(param1)

            #print "Total de registros ", results.count()

            for post in results:
                #print post
                self.conditions.append(post)

            return self.conditions

        except:
            print "Erro ao executar a query"