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Willkommen im Disy Tech‑Blog
Unser Herz schlägt für Geo‑IT, hier könnt ihr es hören
In unserem Blog geben wir euch Einblick in unsere Arbeit bei Disy. Mit spannenden Projekten etwas Reales bewegen, durch innovative Themen den State of the Art der Geo-IT bestimmen – hier erfahrt ihr womit wir uns täglich befassen.
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Maven To Bazel
Generating a Bazel Build Piece by Piece
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Disy Hackathon 2022
Also in 2022 we had a hackathon. As always we organized into small groups and worked on little projects centered around Cadenza.
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depgrapher: Fast Dependency Analysis for Javascript
How to create simple to use high-performance dependency analysis with unix tools
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Hash Collisions in Java
How does HashMap handle many colliding keys?
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Automatic coordinated rebase with changeset evolution and Mercurial
No more Friday afternoon panic, part 2.
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Continuous integration with an evergreen master
No more Friday afternoon panic.
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Modularizing a Large Commercial Code Base
Part I: Defining goals, picking features, asking questions
After migrating 1.5 million lines of code to Java 9 in 2017, we’ve set out in 2019 to start using the module system.
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Relinking 30k GitLab commits to JIRA
Creating JIRA links to GitLab commits for our migration from Subversion to Git
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Hexagonal heatmaps and clever clustering
The balancing act between performance and exactness is an exiting path. A path one has to take to prepare for the big-data future, both in data analysis and data visualization. Join us on our quest in the gis world!
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Third Disy Hackathon
For the third time, Disy puts regular work on pause to give creativity free reign. Self-organized into small teams, everybody is busy working on little projects, mostly around the Cadenza platform, but intermingled with things like Lego, football, and even satellites. Let’s take a quick peek what everybody’s working on.
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Migrating the i18n approach
Switching the internationalization approach from NLS to ResourceBundles for 1 million lines of Java.
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Browser Integration in Java Applications
We did some research about tools that can be used to add a browser to Java Swing applications to integrate web applications such as Cadenza Web.
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Writing a video player with Java Swing
How to smoothly animate images with Java Swing.
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Developing web components
What we learned from developing web components in the browser nowadays.
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The Sugiyama Method - Layered Graph Drawing
An easy assignment gone wrong - implementing the Sugiyama Method with Typescript.
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Second Disy Hackathon
For the second time Disy put regular work on pause and spent two days working in small teams on creative little projects around the Cadenza platform.
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A lazy tree model for PrimeFaces
Enhance your JSF application with lazy loading!
Are you using the PrimeFaces component library? It is a great way to enhance your JSF application. We want to show you how to enhance the tree components with lazy data loading.
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Code Reviews At Disy
Part III: Observations
After about 18 months and one and a half thousands reviews we’ve made some observations to share and some recommendations to make.
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Code Reviews At Disy
Part II: How We Review
After setting out to create a peer review culture we came up with a workflow and picked a tool that would help us get there.
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Osmotron
Converting Open Street Map Files
Ever wondered how you can convert OSM files into other formats like WKT or GeoJSON? Read on and wonder no more…
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Code Reviews At Disy
Part I: Where We Were and What We Wanted
At Disy we review almost all the code we write. We want to share why that was not always the case and how we started with code reviews.
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TDD for PL/SQL Development
Setting up a Testing Framework with JUnit
Are you developing extensive routine in PL/SQL? We share our experience in setting up a TDD environment with JUnit for doing so.
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Rückblick auf den Disy Hackathon
Disys erster Hackathon war ein großer Erfolg. Mit etwas Abstand haben wir darauf zurückgeblickt und möchten die Erkenntnisse hier teilen.
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Live vom Disy Hackathon
Unser erster Hackathon läuft auf vollen Touren, aber die Teams haben sich dennoch die Zeit genommen, uns zu zeigen, was sie mit heißer Nadel nähen. Aber nur ganz kurz, wir wollen sie nicht zu lange aufhalten!
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Disy Hackathon – Shiny Cadenza
Am 20. April wird sich bei Disy ordentlich aufgebretzelt! Es beginnt der 1. große Disy Hackathon, der unsere Kreativität entfesseln und Cadenza noch besser machen soll.
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Project Jigsaw
JUG @ Disy – Teil II
Zusammenfassung, Video und Folien des zweiten Vortrags beim Treffen der Java User Group bei Disy.
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Entity Component Systems
JUG @ Disy – Teil I
Im März war die Java User Group Karlsruhe zu Gast bei Disy. Wir hatten einen tollen Abend mit Vorträgen zu Entity Component Systems und Project Jigsaw. Wer das verpasst hat oder sich das eine oder andere Detail in Erinnerung rufen möchte, findet hier Zusammenfassung, Video und Folien.
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A Doomed Code Review
And How We Turned It Around
Code Reviews should be brief, short, and focused. This one was neither but we put our heads together and turned it around. And with good results, too!
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JUnit 5, Rust, GraphML
Aarlaubstag Februar 2016
Am Februar-Aarlaubstag haben wir uns unter anderem mit JUnit 5, Rust und GraphML beschäftigt.
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Beware Of findFirst() And findAny()
After filtering a Java 8 Stream it is common to use
findFirst()orfindAny()to get the element that survived the filter. But that might not do what you really meant and subtle bugs can ensue. -
Reactive Programming, SpatiaLite, Reader Monad, JDeps
Aarlaubstag Dezember 2015
An diesem Aarlaubstag haben wir uns unter anderem mit Functional Reactive Programming, SpatiaLite im Browser, dem Problem der Konfiguration in strikt funktionaler Programmierung und der Integration von JDeps in Maven beschäftigt.
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JMeter Tutorial
Benchmarking Your Web Application
Want to load test your web app? Then you should know about Apache JMeter! This tutorial helps you to get to know JMeter, create a test plan and execute it to benchmark your application.
