Function generateRpcClass

java/scripts/codegen/java.ts:1261–1309

Generate a Java record for a JSON Schema object type. Returns the class content.

(
    className: string,
    schema: JSONSchema7,
    _nestedTypes: Map<string, { code: string }>,
    _packageName: string,
    visibility: "public" | "internal" = "public"
)

/** Generate a Java record for a JSON Schema object type. Returns the class content. */
function generateRpcClass(
    className: string,
    schema: JSONSchema7,
    _nestedTypes: Map<string, { code: string }>,
    _packageName: string,
    visibility: "public" | "internal" = "public"
): { code: string; imports: Set<string> } {
    const imports = new Set<string>();
    const localNestedTypes = new Map<string, JavaClassDef>();
    const lines: string[] = [];
    const visModifier = visibility === "public" ? "public " : "";

    const properties = Object.entries(schema.properties || {});
    const fields = properties.flatMap(([propName, propSchema]) => {
        if (typeof propSchema !== "object") return [];
        const prop = propSchema as JSONSchema7;
        // Record components are always boxed (nullable by design).
        const result = schemaTypeToJava(prop, false, className, propName, localNestedTypes);
        for (const imp of result.imports) imports.add(imp);
        return [{ propName, javaName: toCamelCase(propName), javaType: result.javaType, description: prop.description }];
    });

    lines.push(`@JsonInclude(JsonInclude.Include.NON_NULL)`);
    lines.push(`@JsonIgnoreProperties(ignoreUnknown = true)`);
    if (fields.length === 0) {
        lines.push(`${visModifier}record ${className}() {`);
    } else {
        lines.push(`${visModifier}record ${className}(`);
        for (let i = 0; i < fields.length; i++) {
            const f = fields[i];
            const comma = i < fields.length - 1 ? "," : "";
            if (f.description) {
                lines.push(`    /** ${f.description} */`);
            }
            lines.push(`    @JsonProperty("${f.propName}") ${f.javaType} ${f.javaName}${comma}`);
        }
        lines.push(`) {`);
    }

    // Add nested types as nested records/enums inside this record
    for (const [, nested] of localNestedTypes) {
        lines.push(...renderNestedType(nested, 1, new Map(), imports));
    }

    if (localNestedTypes.size > 0 && lines[lines.length - 1] === "") lines.pop();
    lines.push(`}`);

    return { code: lines.join("\n"), imports };
}

async function generateRpcTypes(schemaPath: string): Promise<void> {
    console.log("\n🔌 Generating RPC types...");