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javers/contributors

JaVer's Contributors room. If you are a JaVers User and have a question, ask at Stack

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DienLH

@dienlh

@bartoszwalacik Ok thanks! I will apply if javers implement new version and support this.

helycopternicht

@helycopternicht

Hey guys! I hope you are doing well! I want to use Javers in my pet project. And I use PostgreSQL as the main warehouse and MongoDB as a warehouse for audited data. Everything is working great, except for one thing. When I make several requests in a single transaction auditing data persists in Mongo with different commit version. Is it expected behavior when MongoDB is used? I just want to find changes that were been changed in one transaction. Сan someone point me in the right direction?

Bartosz Walacik

@bartoszwalacik

hi, javers doesnt know nothing about your transactions

helycopternicht

@helycopternicht

Thanks for the answer! And if I'll store audited data together with main data javers will use transaction right?

Bartosz Walacik

@bartoszwalacik

if in sql db - yes

helycopternicht

@helycopternicht

Thanks. Whould it helpful to provide this functionality in javers?

Would *

skogs

@skogs

Hi, is there a way for TERMINAL snapshot to have the last know entity values rather being empty? Or, is there a easy way to retrieve the terminated object? I am using findSnapshots() in the context of Spring Boot. Thanks!

Btw, Javers is amazing work. Much more easier to configure and intuitive to use and query than envers.

Bartosz Walacik

@bartoszwalacik

Thanks @skogs, nice to hear that :)

but, no, there is no query for last snapshot of deleted object, if you'd like to contribute such feature, you are welcome

Daniel Engfeldt

@dniel

If I just want to use Javers to detect changes in a object graph, compared to the previous version, and then send notifications to clients if changed.
And I dont need the persistent respository of thye audit log.
Is Javers still a good match?

Bartosz Walacik

@bartoszwalacik

yes, thats javers core feature, diff

Daniel Engfeldt

@dniel

yeah, but when starting up without any special repository says "using in-memory repo, please register real repo" and the documentation says in-memory is only for testing, not for production.

But when running only for using diff-features and not persistence, is the default config with the in-memory enough and usable in production?

Bartosz Walacik

@bartoszwalacik

you dont get it, javers.compare() doesnt use any repo , its a pure function

vedshankar14

@vedshankar14

Hi, I am using Javers audit with MongoDB. is there any way to capture the initial state of the object with Javers audit api? I am to see the audit details only from first update onwards in snapshot collection.

Bartosz Walacik

@bartoszwalacik

https://javers.org/documentation/jql-examples/#new-object-filter

vedshankar14

@vedshankar14

Hi, Can we overrides the jv_snapshots collection name?
and Audit data of the all the collections will be stored in jv_snapshots?

Bartosz Walacik

@bartoszwalacik

its fixed

you can use a schema name

Björn Lindahl

@r3trobear_twitter

Hi, it seems output from javers is colored red in intellij, which is default error color. Does anyone have a solution to this. Example of logging colored incorrectly (as I see it):
mar 01, 2020 10:04:56 FM org.javers.core.JaversBuilder bootAddOns
INFO: loading GroovyAddOns ...

Bartosz Walacik

@bartoszwalacik

it's INFO level, so how it can be red?

Björn Lindahl

@r3trobear_twitter

Good question. Can it be that it prints to stderr by default causing it to be treated as an error?

Bartosz Walacik

@bartoszwalacik

javers logs only to logger

qwiskyRobert

@qwiskyRobert

data is not saving to jv_commit_property table . how to fix this?

qwiskyRobert

@qwiskyRobert

JaversException NOT_INSTANCE_OF: Can't create InstanceId for EntityType

Ashutosh Gupta

@ashKIK

Hi all, How to use Javers audit in a dropwizard project (No spring, spring-boot) ? Also is auto audit supported with dropwizard ? Persistence is done via dropwizard-hibernate. Thanks

Bartosz Walacik

@bartoszwalacik

Hi, where is the problem, if you don't use Spring, you have to create a Javers instance using JaversBuilder - see https://javers.org/features#javers-repository

MaximOsievskiy

@MaximOsievskiy

Hi. I`m using Javers audit with MongoDB. Is there any way to archive (delete) Javers snapshots with Javers API? I need to remove obsolete snapshots in order to free up space in the DB

Bartosz Walacik

@bartoszwalacik

only deleteAll

MaximOsievskiy

@MaximOsievskiy

@bartoszwalacik Could you please explain in more details? Do you mean direct removal of documents from the jv_snapshots?

Bartosz Walacik

@bartoszwalacik

short answer is no, javers repository API is insert & read only

Hushen Savani

@hushensavani

Does JaVers support CreateDB?

@bartoszwalacik

@ashKIK

Hushen Savani

@hushensavani

CrateDB *

Darwin Correa

@dacopan

hello, any support for spring 2.3.0?

koapost

@koapost

Hi, I use javers and mongodb. More specific I annotated a spring boot repository with @JaversSpringDataAuditable. The problem is that I get 16MB limit error. Does anybody knows how I fix this?

1 reply

Noyal Joy

@noyaljoy

Is it possible to provide custom names to jv_snapshots and jv_head_id in spring boot mongodb project ?

Bartosz Walacik

@bartoszwalacik

nope

Noyal Joy

@noyaljoy

Harsh Gupta

@hardmettle

Hi, wanted to understand what does Javers use underneath to detect changes ? is it reflection?

Bartosz Walacik

@bartoszwalacik

Hi, yes Javers uses reflection

Karsten Silz

@ksilz

The London Java Community (LJC) regularly hosts lightning talks. On Friday, October 2, 2020, I discussed how JaVers makes audit logs easy in Java: http://bpf.li/cat

I'll give an extended, 25 minute version of my talk next Wednesday. As the lightning talk, it'll be on YouTube within a week or so: https://www.eventbrite.co.uk/e/ljc-virtual-meetup-community-talks-tickets-125353506713?aff=meetup

Bartosz Walacik

@bartoszwalacik

Hi @ksilz, great news! When it will be on YT, maybe we could link to it from javers.org ?

Karsten Silz

@ksilz

The lightning talk is already on YouTube. It's about 8 minutes: https://youtu.be/zCPqdaj9Rf8?t=2407

@bartoszwalacik Please feel free to link to it from the web page. Please also include the link to https://betterprojectsfaster.com/learn/talks-ljc-lightning-talk-2020-javers-audit-log/ . The reason is that has the slides and - more importantly - a lot of sample code that shows how to create versions, query and compare them. It also shows what JaVers writes to the database and includes tips for optimizing the versioning.