B4J Question [SOLVED],[BANanoVuetifyAD3] MongoDB doesn't work

NGUYEN TUAN ANH · Oct 11, 2022

Dear All,
I have successfully connected to the MongoDB database, my "DEM" tbl has 20000 records
i have done the following code but it doesn't work, the result always returns the value 0

my Code:

    Dim mongo As BANanoMongoDB
    mongo.Initialize(Main.Host, Main.DbPort, Main.Database, "DEM")
    mongo.position = 5
    Dim ih As Int = mongo.GetInt("h")
    Log(ih)

Could you please help me. !
Thank you very much
Best Regards

Mashiane · Oct 12, 2022

Hi it seems like you have not executed a select first before setting your position.

Please check the code in the thread here

Thread '[BANanoMongoDB] A helper class for everything MongoDB PHP CRUD.' https://www.b4x.com/android/forum/t...class-for-everything-mongodb-php-crud.138804/

NGUYEN TUAN ANH · Oct 12, 2022

Mashiane said:
Xin chào, có vẻ như bạn đã không thực hiện một lần đầu tiên lựa chọn trước khi đặt vị trí của mình.

Vui lòng kiểm tra mã trong chủ đề tại đây

Chủ đề '[BANanoMongoDB] Một trợ giúp lớp cho mọi thứ MongoDB PHP CRUD.' https://www.b4x.com/android/forum/t...class-for-everything-mongodb-php-crud.138804/

Did you mean: before calling mongo.position = 5 , I have to do banano.Await(mongo.SelectWait)

Mashiane · Oct 12, 2022

Yes, that is not an automatic call when you initialize the object

Mashiane · Oct 12, 2022

Welcome... You can also do..

Do while mongodb.nextRow
Dim r as map = mongodb.record
Or
Dim sname as string = mongodb.getstring("name")
Loop

Mashiane · Oct 12, 2022

Please also if you don't mind, kindly visit all your questions and mark the solution given, this helps other people.

I would greatly appreciate that.

NGUYEN TUAN ANH · Oct 14, 2022

Mashiane said:
Please also if you don't mind, kindly visit all your questions and mark the solution given, this helps other people.

I would greatly appreciate that.

Thank you

My solution for this:

    Dim mongo As BANanoMongoDB
    mongo.Initialize(Main.Host, Main.DbPort, Main.Database, "DEM")
    mongo.ClearWhere
    mongo.AddWhere("k", mongo.EQ_OP, 5)
    banano.Await(mongo.SelectWait)
    Dim row As Map = mongo.result.Get(0)
    Dim ih As Int = row.Get("h")
    Log(ih)

Mashiane · Oct 14, 2022

Perfect, just like I said in post #2 that you need to execute a select first. Please mark that as a solution to close this thread. Thank you.

B4J Question [SOLVED],[BANanoVuetifyAD3] MongoDB doesn't work

NGUYEN TUAN ANH

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Mashiane

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NGUYEN TUAN ANH

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