Java

Four projectors emit idiomatic Java 16+ source — records by default, POJOs as an opt-in style (options.style) — one per JSON (de)serialization library. All four share the same two-renderer split: a bare type-expression renderer (List<String>, OrderStatus, int) and a full top-level declaration renderer; the single exported entry point returns a declaration when name is passed, a type expression otherwise. Only the annotation vocabulary differs between variants.

Jackson

import { toJava } from "@rhi-zone/fractal-type-ir/java-jackson"

toJava(t(types.object({
  id: t(types.integer),
  name: t(types.string),
  email: t(types.string),
  isActive: t(types.boolean),
  tags: t(types.array(t(types.string))),
})), "User")

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.JsonValue;
import java.util.List;

public record User(int id, String name, String email, @JsonProperty("isActive") boolean isactive, List<String> tags) {}

Gson

import { toGson } from "@rhi-zone/fractal-type-ir/java-gson"

@SerializedName("wire-name") in place of Jackson's @JsonProperty:

import com.google.gson.annotations.SerializedName;
// ...
public record User(int id, String name, String email, @SerializedName("isActive") boolean isactive, List<String> tags) {}

Moshi

import { toMoshi } from "@rhi-zone/fractal-type-ir/java-moshi"

@Json(name = "wire-name") on the field, plus a class-level @JsonClass(generateAdapter = true) Moshi's codegen scans for:

import com.squareup.moshi.Json;
import com.squareup.moshi.JsonClass;
// ...
@JsonClass(generateAdapter = true)
public record User(int id, String name, String email, @Json(name = "isActive") boolean isactive, List<String> tags) {}

JSON-B

import { toJsonb } from "@rhi-zone/fractal-type-ir/java-jsonb"

@JsonbProperty("wire-name") (from jakarta.json.bind.annotation) in place of Jackson's @JsonProperty:

import jakarta.json.bind.annotation.JsonbCreator;
import jakarta.json.bind.annotation.JsonbProperty;
// ...
public record User(int id, String name, String email, @JsonbProperty("isActive") boolean isactive, List<String> tags) {}