Code Monkey home page Code Monkey logo

Comments (6)

fwbrasil avatar fwbrasil commented on August 22, 2024

After loading of object from DB all @transient val fields are null.

That's expected, since they are transient, they aren't persisted.

lazy val fields throw
java.lang.ClassCastException: java.lang.Boolean cannot be cast to java.lang.Byte on access

That's interesting, could you share an isolated example of code that reproduces the issue?

from activate.

MaXaMaR avatar MaXaMaR commented on August 22, 2024

That's expected, since they are transient, they aren't persisted.

But shouldn't they be reevaluated after select?

from activate.

fwbrasil avatar fwbrasil commented on August 22, 2024

But shouldn't they be reevaluated after select?

No, unless it's lazy.

from activate.

MaXaMaR avatar MaXaMaR commented on August 22, 2024

No, unless it's lazy.

So what is the reason to have @transient vals at all? After select they are unusable. I think this is a bug.
Even if @transient var can be changed it is not normal that it is handling null.

from activate.

MaXaMaR avatar MaXaMaR commented on August 22, 2024

I've found more: all transient lazy val fields throw that exception but only if there is overridden transient lazy val toString. If it is tried to access transient lazy val field outside of transaction then this exception is thrown, not no transaction exception. It is also strange that it is required to have an active transaction to access lazy val field that already has all needed data.
activate-transient-lazy-val-fail.zip

from activate.

MaXaMaR avatar MaXaMaR commented on August 22, 2024

Okay, I'm correct, transient val fields got reevaluated on select. Can't reproduce that first part.
Now transient lazy vals. Transient lazy vals throw that ex if in the same class some transient lazy val uses other transient lazy val. Seems like substitution doesn't work correctly.
activate-transient-lazy-val-fail.zip

from activate.

Related Issues (20)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.