Recent Posts by Andres Almiray

Connecting to an Oracle Autonomous Database instance via JDBC requires just a couple of steps which will be described in this post. If you happen to use Apache Maven or Gradle to build your project then you'll be able to copy the configuration snippets shown next, if not you can still download the required JARs directly from Maven Central or the Oracle JDBC Drivers Maven Central Guide. I'm assuming you may be already familiar with Autonomous Database and have an instance...

Helidon 2.0 was recently released and with it came a host of new features and capabilities. Please refer to the docs & guides to know more about these features. Today I'd like to showcase how to build, test, and package a Helidon SE application using the Gradle build tool. Unlike Apache Maven, Gradle does not provide a mechanism similar to Maven archetypes to bootstrap projects. There's nothing stopping us from creating a Helidon SE project from scratch, however we can also...

In recent weeks I've been re-learning Go, looking for similarities with existing Java libraries. Naturally, I went on a search for storing and retrieving data from an Oracle database. There are no shortages of options in the Java space for interacting with data stored in a database. Options range from plain JDBC, lightweight data mappers such as Sql2o and Jdbi, more elaborate mappers such as MyBatis, all the way to the full-fledged ORMs such as Hibernate, Eclipselink, and...

Version 19.7.0.0 of the Oracle JDBC drivers and related binaries have been recently posted to Maven Central. There are quite a good number of goodies and features found in this release, however, in terms of distribution things have changed for the better: POM files for all binaries are now available in minimal form (i.e. with their minimum set of required dependencies). Additionally, a BOM file has also been published, whose responsibility is to define the set of...

Welcome back to the Mastering Maven series. We continue our exploration of Apache Maven's dependency resolution mechanism with dependency exclusions. Up to now we know that Apache Maven will perform what's know as dependency mediation to select versions when resolving the dependency tree. We learned that transitive dependencies are resolved based on their location in the tree, and that the <dependencyManagement> block can be used to fix versions no matter where in the tree a...

Welcome back to the Mastering Maven series. We'll continue exploring the options offered by Apache Maven when it comes to dependency resolution. Dependency resolution is comprised by several concepts explained at Introduction to the Dependency Mechanism. So far we've covered dependency mediation, scopes, and optional dependencies. Now is the turn for dependency management. The <dependencyManagement> block has a couple of uses, the first is to help resolving versions of...

Welcome back to the Maven series. Now that we have covered the basics we're ready to continue the journey. As it happens dependency resolution is one of Apace Maven's greatest assets but also a source of frustration when things do not go as expected. We'll circle back to dependency resolution a couple of times along as this series progresses, today we'll do so by looking at optional dependencies. The Apache Maven site has a page on Optional Dependencies and Dependency...

Last but not least on the series of configuring the Oracle JDBC drivers on Java projects we'll have a look at Quarkus, the latest addition to the set of frameworks that let you build applications quickly and with enhanced productivity gains. Quarkus is a Kubernetes Native Java stack tailored for OpenJDK HotSpot and GraalVM, crafted from the best of breed Java libraries and standards, or said, in other words, a framework that lets you build applications (microservices or...

Continuing the series on Oracle JDBC integration with other frameworks it's time to have a look at Spring Boot, arguably the most popular choice at the moment for those developers that prefer just a subset of the enterprise Java technologies (JavaEE or JakartaEE depending on the version) or simply something else. Spring Boot builds on top of the ideas and base blocks provided by the Spring framework. Spring Boot adds a vast amount of configuration options and defaults that let...