feat: add configurable type mapping for OpenAPI primitive types#2223
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mromaszewicz merged 4 commits intooapi-codegen:mainfrom Feb 16, 2026
Merged
feat: add configurable type mapping for OpenAPI primitive types#2223mromaszewicz merged 4 commits intooapi-codegen:mainfrom
mromaszewicz merged 4 commits intooapi-codegen:mainfrom
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jamietanna
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Feb 15, 2026
jamietanna
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Can we please add an examples entry for this? To show what it looks like end-to-end? Once done, LGTM
I was wondering if there were any other options this may crossover with, but looks like not
I like that we've started with primitive types, but in the future, we could extend this for other types!
Supersedes oapi-codegen#428, since the original author's branch is gone and his PR only exists in the ref log. Added a TypeMapping configuration that lets users override the default OpenAPI type/format to Go type mappings. User-specified mappings are merged on top of built-in defaults, so only overrides need to be specified. For example, mapping string/date-time to a civil.DateTime or changing the default integer type to int64. Changes: - New TypeMapping, FormatMapping, SimpleTypeSpec types with Merge() and Resolve() methods (pkg/codegen/typemapping.go) - TypeMapping field added to Configuration struct - Merged type mapping stored on globalState, initialized in Generate() - Replaced hardcoded switch statements in oapiSchemaToGoType() with map-based lookups via globalState.typeMapping - Updated configuration-schema.json with type-mapping property and reusable $defs for format-mapping and simple-type-spec - Unit tests for merge, resolve, and default mapping completeness Co-Authored-By: natsukagami <natsukagami@gmail.com> Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Simple example added. Once I'm done with behavioral additions, I intend to make a detailed document about all the options, linking to examples. Our configuration is under-documented. |
Move type-mapping examples to output-options
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Supersedes #428, since the original author's branch is gone and his PR only exists in the ref log.
Added a TypeMapping configuration that lets users override the default OpenAPI type/format to Go type mappings. User-specified mappings are merged on top of built-in defaults, so only overrides need to be specified. For example, mapping string/date-time to a civil.DateTime or changing the default integer type to int64.
Changes: