realm | WebGL fractal explorer | Graphics library
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realm Key Features
realm Examples and Code Snippets
Lines of Code : 15License : Permissive (MIT License)
Copyprotected Collection extractAuthorities(OAuth2AuthenticatedPrincipal principal) {
//
Map> realm_access = principal.getAttribute("realm_access");
List roles = realm_access.getOrDefault("roles", Collections.emptyList @Bean
public Realm customRealm() {
return new CustomRealm();
} @Bean
public Realm realm() {
return new MyCustomRealm();
} Community Discussions
Trending Discussions on realm
QUESTION
In my iOS app "Progression" there is rarely a crash (1 crash in ~1000+ Sessions) I am currently not able to fix. The message is
Progression: protocol witness for TrainingSetSessionManager.update(object:weight:reps:) in conformance TrainingSetSessionDataManager + 40
This crash points me to the following method:
...ANSWER
Answered 2021-Jun-15 at 13:26While editing my initial question to add more context as Jay proposed I think it found the issue.
What probably happens? The view where the crash is, contains a table view. Each cell will be configured before being presented. I use a flag which holds the information, if the amount of weight for this cell (it is a strength workout app) has been initially set or is a change. When prepareForReuse is being called, this flag has not been reset. And that now means scrolling through the table view triggers a DB write for each reused cell, that leads to unnecessary writes to the db. Unnecessary, because the exact same number is already saved in the db.
My speculation: Scrolling fast could maybe lead to a race condition (I have read something about that issue with realm) and that maybe causes this weird crash, because there are multiple single writes initiated in a short time.
Solution: I now reset the flag on prepareForReuse to its initial value to prevent this misbehaviour.
The crash only happens when the cell is set up and the described behaviour happens. Therefor I'm quite confident I fixed the issue finally. Let's see. -- I was not able to reproduce the issue, but it also only happens pretty rare.
QUESTION
I have an app to create reports with some data and images (min 1 img, max 6). This reports keeps saved on my app, until user sent it to API (which can be done at the same day that he registered a report, or a week later).
But my question is: What's the proper way to store this images (I'm using Realm), is it saving the path (uri) or a base64 string? My current version keeps the base64 for this images (500 ~~ 800 kb img size), and then after my users send his reports to API, I deleted this base64 hash.
I was developing a way to save the path to the image, and then I display it. But image-picker uri returned is temporary. So to do this, I need to copy this file to another place, then save the path. But doing it, I got (for kind of 2 or 3 days) 2x images stored on phone (using memory).
So before I develop all this stuff, I was wondering, will it (copy image to another path then save path) be more performant that save base64 hash (to store at phone), or it shouldn't make much difference?
...ANSWER
Answered 2021-Apr-26 at 17:49I try to avoid text only answers; including code is best practice but the question about storing images comes up frequently and it's not really covered in the documentation so I thought it should be addressed at a high level.
Generally speaking, Realm is not a solution for storing blob type data - images, pdf's etc. There are a number of technical reasons for that but most importantly, an image can go well beyond the capacity of a Realm field. Additionally it can significantly impact performance (especially in a sync'ing use case)
If this is a local only app, storing the images on disk in the device and keep a reference to where they are (their path) stored in Realm. That will enable the app to be fast and responsive with a minimal footprint.
If this is a sync'd solution where you want to share images across devices or with other users, there are several cloud based solutions to accommodate image storage and then store a URL to the image in Realm.
One option is part of the MongoDB family of products (which also includes MongoDB Realm) called GridFS. Another option is a solid product we've leveraged for years is called Firebase Cloud Storage.
Now that I've made those statements, I'll backtrack just a bit and refer you to this article Realm Data and Partitioning Strategy Behind the WildAid O-FISH Mobile Apps which is a fantastic article about implementing Realm in a real-world use application and in particular how to deal with images.
In that article, note they do store the images in Realm for a short time. However, one thing they left out of that (which was revealed in a forum post) is that the images are compressed to ensure they don't go above the Realm field size limit.
I am not totally on board with general use of that technique but it works for that specific use case.
One more note: the image sizes mentioned in the question are pretty small (500 ~~ 800 kb img size) and that's a tiny amount of data which would really not have an impact, so storing them in realm as a data object would work fine. The caveat to that is future expansion; if you decide to later store larger images, it would require a complete re-write of the code; so why not plan for that up front.
QUESTION
In Realm, I had problem understanding ( Im new in Realm T,T ) the implementations of LinkingObjects , let's say a Person could have more than one Dog ( List of Dog ) so I would write the code such as below:
...ANSWER
Answered 2021-Jun-13 at 15:23You can think of LinkingObjects almost as a computed property - it automagically creates an inverse link to the parent object when the child object is added to the parent objects List.
So when a Dog is added to a person's dogs list, a person reference is added to the Dog's walkers list. Keeping in mind that it's a many to many relationship so technically if Person A adds Doggo, and Person B adds Doggo, the Doggo's inverse relationship 'walkers' will contain Person A and Person B
the app still can run normally without any diff
Which is true, it doesn't affect he operation of the app. HOWEVER the difference is that by removing the walkers LinkingObjects, there's no way to query Dogs for their Person and get Dog Results (i.e. you can't traverse the graph of the relationship back to the person)
In other words we can query Person for kinds of dog stuff
QUESTION
I'm trying to execute the following tutorial to integrate an Angular 12 application with Keycloak: Keycloak Integration with Angular Frontend (I've checked other similar tutorials and the instructions are the same).
As described in the article, I've inserted the following lines in src\environments\environment.ts:
ANSWER
Answered 2021-Jun-12 at 08:00the latest library guide does not contain any "credentials" in the configuration. try removing this piece at all, it shouldn't be there
QUESTION
I am using mongodb realm with a simple custom query function to return DB data
...ANSWER
Answered 2021-Jun-10 at 23:25Just map your metadata to an array of mongo promises, await all of them, then the count result will be in the same position of the array:
QUESTION
I'm using Realm Sync to store data for my iOS app, coded in Swift. I wanted to create an optional double property (budget) for a Realm object (User_budgets). I created the object in the Realm schema and then copied in the Data model SDK that Realm produces which is as below:
...ANSWER
Answered 2021-Jun-10 at 17:53I believe you're using the wrong definition for that optional as it's only available in beta 10.8.0-beta.0:
What you have is
QUESTION
I'm using Tomcat 10 and eclipse to develop a J2E (or Jakarta EE) web application. I followed this tutorial (http://objis.com/tutoriel-securite-declarative-jee-avec-jaas/#partie2) which seems old (it's a french document, because i'm french, sorry if my english isn't perfect), but I also read the Tomcat 10 documentation.
The dataSource works, I followed instructions on this page (https://tomcat.apache.org/tomcat-10.0-doc/jndi-datasource-examples-howto.html#Oracle_8i,_9i_&_10g) and tested it, but it seems that the realm doesn't work, because I can't login successfully. I always have an authentification error, even if I use the right login and password.
I tried a lot of "solutions" to correct this, but no one works. And I still don't know if I have to put the realm tag inside context.xml, server.xml or both. I tried context.xml and both, but i don't see any difference.
My web.xml :
ANSWER
Answered 2021-Jun-10 at 13:44As Piotr P. Karwasz said it, I misspelled dataSourceName in context.xml and server.xml file. I feel bad that I didn't notice it.
But I still have one question : In which document should I put the realm tag ?
QUESTION
My SPNEGO configuration seems to not work and always prompts for a password in my tomcat8.
Installation/Configuration SPNEGO install guide
I added the library spnego-r9.jar to the "tomcat\lib"-folder. Added the .conf files as well. Here the krb5.conf:
...ANSWER
Answered 2021-Jun-10 at 09:13I checked the packages via wireshark and found the unkown pricipalname error. Thanks for the hint @Samson Scharfrichter
The correct spn registration is setspn.exe -A HTTP/ourserver01.example.com exampleUser without the project itself.
QUESTION
I am trying to dockerize my java web app by running the following dockerBuild command below to build a local image first. Keep in mind I am on the mac & am using Java 16 & the jib-maven-plugin for my project.
When I run the command, it gives the following error below.
Error
...ANSWER
Answered 2021-Jun-09 at 08:04I'm using jib also on mac.
According to this issue it seems that jib hasn't been tested against java 16. You can build with earlier versions (java 11 for instance) and still execute it on top of java 16 provided that your code compiles on earlier versions and you don't use java 16 features. Also make sure to use maven 3.8.1
QUESTION
I'm trying to Cycle through my data I'm getting back from an API Call. If I use dummy data in an array, it will cycle fine. But once I attempt to place my api data in its place, it just shows all the items at once instead of cycling one at a time. I console.log(items.length) and get 1 which tells me that this is an array of an object and is just reading it as a whole. Could use some help getting this displaying one item at a time instead of the whole thing at once.
API Call(Title.js):
...ANSWER
Answered 2021-Jun-08 at 20:37If you've an array of objects then you need to pick out the object properties you want rendered.
For a given element object:
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