COBOL to OO Expansion Rates

Expansion Rates During COBOL to C# or Java Transformation

The expansion rate reflects how many lines of output code are produced based on a certain set of input code. This document explores the expansion rate when transforming COBOL code to C# or Java, using Astadia's CodeTurn tool.

The data is presented based on a concrete use case of a transformed COBOL application that went into production for one of our customers.  

To get meaningful numbers out of this exercise, some additional background on the transformation of COBOL needs to be provided, specifically around the concept of COBOL copybooks and how these can be transformed.

However, due to the specific technical characteristics of all the technologies involved, this is not always possible. As a result, the following two different categories of COBOL programs are identified:

• COBOL programs that don’t need to expand any of the COBOL copybooks used
• COBOL programs that need to expand at least one COBOL copybook

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Related Resources

Safely Transforming COBOL COPY Statements with CodeTurn

COBOL Transformation Options

COBOL To Java Transformation

COBOL to C# Transformation