using Mongodb in Java Desktop Application

[haughty pumice]

Can i find someone who has implemented mongodb in their java desktop app? like retrieving data from a mongo database for app to use it, i have some questions ?

[stable iris]

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[merry river]

what are your questions

[haughty pumice]

I have an already fullfilled database in mongo , is there a way to embed this database with the desktop app so that it comes with the installer?

[merry river]

you would have to embed mongodb which would involve launching a separate mongodb process (probably using native code)

you might be better off using a naturally embedded database (e.g. HSQLDB, H2), or connect to a remote mongodb instance, for example their cloud offering has a free tier: https://www.mongodb.com/pricing (see "Shared")

[haughty pumice]

I am know using mongodb compass which means its connecting to the local host

[merry river]

right

[haughty pumice]

I dont think i can change the implementation because a lot of pages in the app depend on the data retrieved from the db

Thzt would mean another process

[haughty pumice]

So i thought i would embed it ready with my app

[merry river]

there is an embedded mongodb lib called flapdoodle but i think it's just for testing (i.e. it's not persistent)

so maybe it's better to use the hosted mongodb i linked above^ ?

[haughty pumice]

Does it require internet connection for the users who install my app?

[merry river]

yeah that is the downside

you create a read-only user that can only query the DB (used in the desktop app), and you can update records etc using a separate admin type user

[haughty pumice]

Wdym not persistent ? What are their limits?

[merry river]

i think it only implements the mongodb api but doesn't actually store anything

[haughty pumice]

Thanks i will do a research on those, another question please, do you have any experience with linking an app to the internet (for example for authentication using Google)?

[stable iris]

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[haughty pumice]

I have some issues when turning the app into an executable

[merry river]

not sure what you mean, you should just be able to make http requests?

unless if user is behind a proxy or something but that's kind of not your problem

also if you're asking about oauth with google then you should definitely use mongodb atlas free tier 😉

[haughty pumice]

I will explain, the authentication used is by OAuth2.0 library, everything is working fine in intellij , like i click on the button to authenticate and then a web window appear where i authenticate using google then it redirects me inside the app

[merry river]

right...

and when bundled as a jar it doesn't do that?

[haughty pumice]

When i run the jar on the cmd it works (by adding javafx —add-modules etc..)

But when i turn the jar into an exe it doesn’t work

I think i am missing a step in the bundling process

[merry river]

how are you turning it into an exe

[haughty pumice]

The error is about java.util.logging.logger

[haughty pumice]

I tried a lot of things tbh, i even tried that launch4j

I tried jlink and jpackage as well

[merry river]

oh you did try jpackage

what happens with jpackage

[haughty pumice]

Same error , as i said i think im skipping something when packaging with maven

[merry river]

what's the error

[haughty pumice]

I don’t remember exactly i ve been stuck for a week in this and as i said i tried a lot of things i half forgot what i ve done

But the project structure is non modular

And when i used launch4j (last thing that i tried)

The app launches but when i click to authenticate (means going to the internet) , the app crashes

So you think that jpackage/jlink is the solution for packaging a javafx app?

[merry river]

jpackage is the latest so probably most supportable etc

but if you can share the error it would be more helpful

[stable iris]

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[haughty pumice]

with jpackage or anything, the error is still the same

[merry river]

What's the error

[haughty pumice]

Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

and when i follow the stacktrace

Caused by: java.lang.ClassNotFoundException: java.util.logging.Logger
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)

i think that java.util.logging.Logger is the one that dont let my app redirect to the web (to authenticate with google)

[merry river]

Weird, that's part of the jdk

[haughty pumice]

exactly

[stable iris]

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