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feat(ext-jackson): one module per data format, bodies checked on the way in

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flash-ext-jackson and flash-ext-validation become three modules:

- flash-ext-jackson-core: the Codec (one mapper, body/write/writeView),
  JacksonHandler, the outbound marshalling, and the constraint engine that
  used to be flash-ext-validation
- flash-ext-jackson-json: Json, JsonExtension, JsonHandler
- flash-ext-jackson-xml: Xml, XmlExtension, XmlHandler

Every Jackson format is the same databind model behind a different factory, so
the annotations, the constraints and the published schema are the same for all
of them: only the mapper and the content type differ, and that is all a format
module says. A route picks its format by the handler it extends — there is no
negotiation and nothing to configure.

A typed body is now always verified against its own type's jakarta
constraints, whatever the format: malformed is a 400, a broken constraint is a
422, and neither reaches the handler. The validator was already allocation-free
and stays so; validating is no longer something an application remembers to do.

bodyFrom is gone. body has the streaming semantics, because the request's
stream is reused per connection while bytes() allocates the whole body: one
name, the path that does not allocate. JacksonExtension is JsonExtension, and
autoJson() is auto().

The root POM now manages every module of this build, so anything composing
Flash imports it once and never names a version again.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Zakaria El Orche
2026-09-23 13:31:28 +00:00
co-authored by Claude Opus 5
parent ef4740f26d
commit adcd6376b6
37 changed files with 894 additions and 801 deletions
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flash-extensions/flash-ext-jackson-json/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>dev.relism</groupId>
<artifactId>flash-extensions</artifactId>
<version>2.1.0-SNAPSHOT</version>
</parent>
<artifactId>flash-ext-jackson-json</artifactId>
<name>flash-ext-jackson-json</name>
<description>JSON bodies and responses: the Json codec, JsonHandler and the marshalling middleware.</description>
<dependencies>
<dependency>
<groupId>dev.relism</groupId>
<artifactId>flash-ext-jackson-core</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>dev.relism</groupId>
<artifactId>flash-testing</artifactId>
<scope>test</scope>
</dependency>
<!-- The constraints a body declares are described by the published document too. -->
<dependency>
<groupId>dev.relism</groupId>
<artifactId>flash-ext-openapi</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>