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For example, in JPA we can change the isolation level for each method as follows: @Transactional(isolation = Isolation.REPEATABLE_READ) public void processOrder(Long orderId) { // business logic }...
Best practices
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1 replies
72 views

After reading the documentation and looking at the examples, I still can't figure out how to read a List<Message<?>> and save it to the database in a single operation (batch insert) in ...
Advice
1 vote
2 replies
65 views

We have some expensive REST services implemented in Helidon MP 4 that often take one minute until they are finished and the response is returned. It happens quite often that the client disconnects ...
Score of 1
1 answer
84 views

I'd like to be able to programmatically check whether or not an endpoint in my Helidon MP application has the @PermitAll annotation, e.g. from its SecurityContext or something like that. Is this ...
Score of 1
1 answer
90 views

I have a Helidon app and would like to take CPU samples and/or start a CPU profiler. This does not work. With the same setup, it works for a simple (non Helidon) app Trying to start the CPU (and also ...
Score of 0
0 answers
49 views

I need to upgrade our application from Helidon 3.0.2 to Helidon 3.2.12, but running gives this error: [INFO] 2025-06-17 13:24:37,043 [main] org.jboss.weld.Bootstrap - WELD-ENV-002001: Weld SE ...
Score of 0
0 answers
78 views

I have a parent class that exposes as a REST endpoint a common method for all my rest services. My child classes which are JAX-RS resources implement their own specific methods and expose their ...
Score of 0
1 answer
182 views

I am trying to implement OpenAPI UI in my project with Helidon 2.6.6 Added the following dependencies in my pom.xml <dependency> <groupId>io.helidon.microprofile....
Score of 0
1 answer
89 views

I have below rest client in java as below: import jakarta.ws.rs.*; import org.eclipse.microprofile.rest.client.annotation.RegisterClientHeaders; import org.eclipse.microprofile.rest.client.inject....
Score of 0
1 answer
47 views

I want to use Helidon SE 4.1.6 and producer the data to a specific partition of Apache Kafka using producer. Detail : I have gone through the https://helidon.io/docs/latest/se/reactive-messaging#...
Score of 0
1 answer
206 views

I am facing a NullPointerException when trying to use EntityManager in my Helidon MicroProfile project. The exception occurs because the EntityManager is null when I attempt to create a query. The ...
Score of 0
1 answer
188 views

How do I fix this exception? It is preventing me from starting a Helidon server. I am running TestNG from Eclipse IDE. This does not happen if I execute mvn clean package. ... Caused by: org.jboss....
Score of 0
1 answer
59 views

I have the following class that supposed to send messages to Oracle AQ defined application.yml. @ApplicationScoped public class BaseAQClient{ private static final Logger logger = LoggerFactory....
Score of 1
2 answers
92 views

We're developing a Single-Page Application using Helidon SE as the api and webserver. We are struggling how to configure OIDC authentication using Auth0. We are not sure about the following: If the ...
Score of 1
1 answer
181 views

I am new to Helidon, and we want our Java app to support HTTPS for REST calls. I have a sample controller that returns some string, and my app currently runs on http://localhost:8080. How can I enable ...

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