Feedback on Maven multi-module project setup with OSGi
I am getting in touch with OSGi and trying to setup a project using Apache Felix and Maven. I'd like to use a Multi-Module build and declarative services. The project is hosted on GitHub: osgi-maven-example (Note that the link points to a specific commit and not to the HEAD of the repository.)
I have got a few questions about the overall setup of the project:
According to Neil Bartlett the
bnd-maven-pluginshould preferably used over the Apache Felix Bnd Plugin because it respects Maven's lifecycle. Judging by the age of the bnd-maven-plugin, this seems to be a relatively new approach and I am therefore not sure if it is a good idea to do so.I am using the declarative services package (
org.apache.felix.scr.annotations) from Apache Felix to define my components. These annotations are used by themaven-scr-pluginto generate service descriptors which are included in theMANIFEST.MFby the use of the following line in thebnd.bndfile:Service-Component: OSGI-INF/*.xml. Is this the way declarative services are intended to be used?IntelliJ displays a warning in the
GermanGreeter-class:
What exactly does this mean? Do I need to care about this? How can I fix it?
Although I am pretty happy over this working example, I am curious if I am using all these technologies in their intended way and I would be very grateful if I could get some feedback on the overall setup before I am starting to use it in a bigger project.
There is now an official set of annotations for DS, under the package org.osgi.service.component.annotations. These annotations are packaged in the jar "compendium" (org.osgi/cmpn), and bnd has a directive to generate components descriptors : -dsannotations : *
the first part of your question is subject to opinions... maven-bundle-plugin is more "maven centric" : it's more easy to integrate it in a maven build. bnd-maven-plugin is more "bnd centric" : you manipulate standard bnd files, but it broke some maven convention. both have advantage and inconvenient
- Is there a java.time equivalent of DateTime.dayOfYear().isLeap()?
- WordNet Java API
- Why use a ReentrantLock if one can use synchronized(this)?
- How to format a ZonedDateTime to a String?
- How to short circuit when using a parallel stream with filter and findFirst
- Stream distinct with nested list counts and matching nested list item counts
- Timezone changes are not being persisted in Spring-Boot application
- how to convert decimal to hexadecimal in java
- Why does pattern matching with switch on InetAddress fail with 'does not cover all possible input values'?
- Jackson to parse bean<t> with list of T beans
- Catch a generic exception in Java?
- How to get the whole text of StAX XMLEvent object?
- The www-authenticate header breaks JettyClientHttpConnector
- Why should I use @NaturalId?
- Can't reproduce virtual thread pinning (jdk 21), yet mysql not as parallel as should be
- how to move slider towards left and right using selenium java
- Format of Date in the JavaFX.TableView
- Launch Jetty 9 Programmatically
- Spring JdbcTemplate fail to convert String to Enum (that extend specific interface), since default converter is called even if removed
- GET Request Returning Empty Object in SpringBoot
- Trying to draw box around checkbox and display text using pdfbox
- Extracting date, hour and minute from Instant.now() generated date
- Tail Call Optimisation in Java
- Spring Boot Angular18 Uploading Photo
- What is a IOException, and how do I fix it?
- What does %5B and %5D in POST requests stand for?
- Why couldn't Integer type convert to Double type automatically in Java8 stream API?
- Spring Boot default H2 jdbc connection (and H2 console)
- No content to map due to end-of-input jackson parser
- How to properly add HTTP header in WebService Client (Spring Web Services)