rest – Fixing of Java.lang.IllegalStateException: No active conversation found. at com.rapidclipse.framework.server.jpa.Jpa.getEntityManager(

I have a running RapidClipse X Project, in which I work with a MySQL Database. I created a class to copy data from one table into a second table. For this I use a stream HibKontoDAO().findAll().stream().forEach( tc -> { … copy data } The call and the process of this code works very well from … Read more

Building a REST API With Feathers.js and SQLite

Looking for a way to build a web application with features like authentication, database setup, and authorization without writing a ton of code and configurations? Ever wanted to create a production-ready app in a matter of days? Believe it or not, it’s possible! This tutorial will show you how to use Feathers.js to create a … Read more

Modern REST API Design Principles and Rules

Typically, when updating or developing an API like, a news API for a service to provide news data with quick response time, there are lengthy discussions about the API’s structure, naming, and functions. Although, over time, specific rules have emerged that can be applied to the process and aid in reaching a common ground … Read more

Choosing Between REST and GraphQL

This is an article from DZone’s 2022 Enterprise Application Integration Trend Report. For more: Read the Report To create a data-driven web or mobile app, you’ll need an API through which you can access data from your back-end server. The most popular architecture for APIs is REST. But while REST is widely known and generally … Read more

java – Initialization failure on JAXRS Jersey SpringBoot REST API

A simple image upload controller consuming multipart/form-data fails to initialize. The controller code @POST @Path(“/image”) @Consumes(MediaType.MULTIPART_FORM_DATA) @Produces(MediaType.APPLICATION_JSON) public Response uploadImage( @FormDataParam(“image”) InputStream fileInputStream ) throws Exception{ BufferedImage image =; System.out.println(“uploaded image”); return Response.ok(“done”).build(); } Error happens during the first request when Jersey is initializing the controller. org.glassfish.jersey.server.model.ModelValidationException: Validation of the application resource model … Read more

GraphQL: Deep Dive Into Benefits, Use Cases, More

This is an article from DZone’s 2022 Enterprise Application Integration Trend Report. For more: Read the Report As the complexity of software applications grows, the number of interfaces among their various components also increases. This leads to an ever-growing API footprint and an explosion of integrations. Even minor changes start taking more and more time … Read more

java – Why is the RecyclerView loading before the rest Kotlin Android

Hello I am doing a little app for my homework and I want to display data from my php api on the app. But the Recycler View send this message 2022-04-25 00:41:36.662 13593-13593/net.robcorp.finalapp E/RecyclerView: No adapter attached; skipping layout before the adapter code runs because this message 2022-04-25 00:41:36.907 13593-13593/net.robcorp.finalapp I/System.out: [Drivers(pos=1, name=Charles Leclerc, nb=16, … Read more