Future-Proof Your Core with Automated RPG to Java Migration
The skills gap is widening. As veteran RPG developers retire and incoming engineers focus on modern stacks, your monolithic architecture becomes a single point of failure. It is time to build a "Plan B." We refactor RPGLE to Spring Boot, preserving 100% of your business rules while running natively on AWS.
Overcoming the "Impossible" Migration Myth
Many enterprises hesitate to modernize because they believe their legacy codebase is too intertwined, too complex, or relies on outdated procedural logic that modern object-oriented languages cannot replicate.
Our AS400 application modernization engine was built to handle the exact nuances of decades-old IBM i environments. We don't just lift and shift; we programmatically translate and decouple your architecture, bridging the gap between legacy reliability and cloud-native agility.
Automated Decoupling
Stop manually rewriting applications. Our engine parses AST structures to auto-generate Spring Boot REST APIs linked seamlessly to modern Angular user interfaces.
Proven Against Real-World RPG Complexity
Our translation pipeline has been rigorously stress-tested against the major programming concepts of the AS/400 across all eras of RPG. Whether your codebase was written in 1998 or 2018, our engine parses and translates the logic accurately.
Supported Legacy Paradigms & Patterns
Fixed-Format Programs
Classic RPG IV column-based specs, compound DOWEQ/ANDEQ loops, indicator-driven CHAIN flows (e.g., dynamic ADD/UPDATE logic without separate screens).
Strict Free-Format (**FREE)
Modern **FREE in column 1, single-purpose programs with dedicated display files and sequence-number generation.
Mixed-Format Architecture
Programs combining fixed-format H/F/D specs, /FREE calculation blocks, and fixed-format EXSR/BEGSR internal subroutines calling shared copybook procedures.
SQLRPGLE (Fixed & Free)
From C/EXEC SQL single-row SELECT INTO statements checked against SQLCOD to Inline EXEC SQL, explicit DECLARE CURSOR, and FETCH NEXT loops.
Retaining Business Logic While Upgrading the Framework
Copybook Resolution
Shared source data structures (/COPY) and procedure prototypes are intelligently mapped into reusable Java classes, preventing code duplication.
Keyed-Access Patterns
Legacy CHAIN lookups and SETGT + READP positioning are cleanly refactored into optimized relational or NoSQL database queries on AWS.
Interactive UI Mapping
Indicator data structures (INDDS) for screen handling and function keys are decoupled and translated into modern RESTful APIs communicating with an Angular frontend.
Legacy Branching
Outdated CABEQ, GOTO, and TAG logic is systematically refactored into structured, readable Java control flows.
Build Your Plan B Today
Don't wait for the talent crisis to impact your core operations. Let's stress-test our translation pipeline against your real enterprise complexity.
If your team has an isolated test box or an LPAR and is open to a collaborative technical experiment, we can demonstrate exactly how your heaviest legacy RPG handles the transition to a modern cloud stack.