Tag: java

JPA Pitfalls (4): Relationship Owner

21. March 2020

by

Michael Bouschen

in hibernate, java, JPA

This blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe issues with bidirectional relationships.
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JPA Pitfalls (3): Cascade Persist

21. March 2020

by

Michael Bouschen

in hibernate, j2ee, java, JPA

This blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe issues of EM.persist with respect to relationships.
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JPA Pitfalls (2): List or Set Relationship

10. March 2020

by

Michael Bouschen

in hibernate, java, java ee, JPA

This blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe the difference between a set or list relationship.
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JPA Pitfalls (1): Serialized Collection

10. March 2020

by

Michael Bouschen

in hibernate, java, java ee, JPA

This blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe, how easily a relation mapped as collection ends up as a blob.
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JPA Pitfalls – a Series of Serious JPA Obstacles

10. March 2020

by

Michael Bouschen

in hibernate, java, java ee, JPA

Most of our Java-based web-applications store their data in a relational database such as Oracle, PostgreSQL, MySQL, MariaDB or MS SQLServer. The standard way to access and modify the data is using an object-relational mapping as specified by the Java Persistence API (JPA). Over the years JPA has become a mature specification and there are…
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Developers Adopt Kotlin! Addressing your fears and Kotlin’s gains.

26. February 2020

by

Immanuel Sims

in java, kotlin, programming languages

Every time I have used Kotlin instead of Java I enjoyed it and did not regret it. But somehow I still meet some reservations regarding Kotlin with both managers and sometimes developers. This Post will address your fears as a (Java) developer regarding the use of Kotlin and elaborate a bit on what Kotlin will…
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Managers adopt Kotlin! Addressing your fears and Kotlin’s gains.

26. February 2020

by

Immanuel Sims

in java, kotlin, management, programming languages

Every time I have used Kotlin instead of Java I enjoyed it and did not regret it. But somehow I still meet some reservations regarding Kotlin with both managers and sometimes developers. This post will address your fears as a manager regarding the use of Kotlin and elaborate a bit on what Kotlin will gain…
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Java Optional and Kotlin Nullable

11. July 2019

by

Martin Schröder

in functional programming, java, kotlin

We are using Kotlin and Spring Boot in one of our projects. This includes Spring Boot Jpa Repositories. We are using a CrudRepository that provides basic functionalities like save(), delete(), findById() etc. This library is written in Java, hence method signatures look like this: Using this API out of the box would force us to…
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GUI Transactions with the FRP Framework Sodium

28. October 2018

by

tnfink

in frp, functional programming, java, reactive programming, sodium, typescript

Sodium is an implementation of Functional Reactive programming (FRP) with some nice features. One of these is the support of transactions in the GUI layer. I had quite some discussions with my colleagues on what this actually means and if such a transaction concept is useful or not. In this article I sum up my…
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Test coverage for containerized java apps

6. September 2018

by

in jacoco, java, kotlin, test

When your deployment artefact is a Docker image, you should system test against a container based on that image. In this blog post, I will demonstrate how to get test coverage for a JVM app in that scenario.
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