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World Congress 2025 • Aug 20, 2025 • Session details

Data-Oriented Programming - Version 1.1

Nicolai Parlog

Is object-oriented design cluttering your data-heavy subsystems? Master Java's data-oriented paradigm using pattern matching and sealed interfaces to build safer, compiler-enforced domain models.

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#1 about 3 min

Introduction to data-oriented programming techniques in Java

Data-oriented programming views applications as functional pipelines that apply transformations over data instead of mutating hidden states.

#2 about 3 min

Defining a GitHub web crawler domain model codebase

A GitHub web scraper serves as a practical domain modeling example for applying explicit application constraints.

#3 about 3 min

Exploring the behavioral challenges of simple object-oriented modeling

Traditional mutable getter interfaces continually fail to prevent contradictory or theoretically impossible application state combinations.

#4 about 3 min

Modeling immutable data structures intricately using Java records

Java records combined with defensive collection copying guarantee underlying structural representations remain transparently and deeply immutable.

#5 about 3 min

Defining precise domain boundaries leveraging Java sealed types

Combining distinct Java interfaces and lightweight records into a closed inheritance hierarchy strictly defines valid combinatorial states.

#6 about 3 min

Preventing illegal application states through aggressive constructor validation

Isolating raw messy input shapes from sanitized destination objects rigidly enforces model correctness at the processing boundary.

#7 about 2 min

Separating structural domain architectures from core business operations

Migrating complex domain logic completely outside core data structures mitigates bloated code components and tangled feature dependencies.

#8 about 3 min

Executing conditional logic gracefully via sealed pattern matching

Java switch expressions safely drive decoupled polymorphic behaviors by interrogating the precise underlying shapes of transparent domain constructs.

#9 about 3 min

Deconstructing syntax trees explicitly using unnamed Java patterns

Innovative record deconstruction techniques and unnamed variable concepts implemented in newer Java versions dramatically bolster operational code readability.

#10 about 4 min

Enforcing exhaustive state coverage implementing intentional compiler errors

Maintaining sealed structural hierarchies deliberately provokes highly visible compiler errors whenever developers integrate untreated implementations into switch statements.

#11 about 3 min

Balancing pure data-oriented principles alongside functional object-oriented systems

Organizations must pragmatically deploy focused record structures or broader structural architectures conditionally depending upon localized system component goals.

Matching moments

3:31 min

Implementing data-oriented programming architectures in Java

Ron Veen Ron Veen · WWC 2023

1:13 min

Applying data-oriented programming for concise java syntax

Balkrishna Rawool Balkrishna Rawool · WWC 2024

2:19 min

Exploring pattern matching features and constructs in java

Balkrishna Rawool Balkrishna Rawool · WWC 2024

2:36 min

Shifting to reactive programming paradigms in Java code

Niklas Heidloff · LIVE

1:52 min

Comparing imperative, declarative, and reactive programming paradigms

Tatiana Chervova · WWC 2023

6:38 min

Using Java records to create immutable data carriers

Mohamed Taman · LIVE

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