switch (propertyKey) {
                case FessConfig.DOMAIN_TITLE:
                    return "Fess";
                case FessConfig.search_engine_TYPE:
                    return "default";
                case FessConfig.search_engine_HTTP_URL:
                    return "http://localhost:9201";
                case FessConfig.search_engine_heartbeat_interval:
                    return "10000";

from fastapi import FastAPI
from fastapi.params import Param
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/items/")
def read_items(q: str | None = Param(default=None)):  # type: ignore
    return {"q": q}


client = TestClient(app)


def test_default_param_query_none():
    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == {"q": None}

Right as we wanted it. ✔️

This is because FastAPI uses this `root_path` to create the default `server` in OpenAPI with the URL provided by `root_path`.

## Additional servers { #additional-servers }

/// warning

This is a more advanced use case. Feel free to skip it.

///

By default, **FastAPI** will create a `server` in the OpenAPI schema with the URL for the `root_path`.

import org.lastaflute.web.validation.VaErrorHook;

import jakarta.annotation.Resource;

/**
 * Action for user profile operations.
 */
public class ProfileAction extends FessSearchAction {

    /**
     * Default constructor.
     */
    public ProfileAction() {
        super();
    }

    private static final Logger logger = LogManager.getLogger(ProfileAction.class);

     */
    public String getCurrentPageNumber() {
        return pageNumber;
    }

    /**
     * Initializes the form with default null values.
     * This method resets all fields to their default state for creating a new entry.
     */
    public void initialize() {
        id = null;
        url = null;
        threadName = null;
        errorName = null;

import jakarta.validation.constraints.Size;

/**
 * The list form for Search List.
 */
public class ListForm extends SearchRequestParams {

    /**
     * Default constructor.
     */
    public ListForm() {
        super();
    }

    /** The search query string. */
    @Size(max = 1000)
    public String q;

    /** The sort field and direction. */

 * Utility class for {@link Reader} operations.
 *
 * @author higa
 */
public abstract class ReaderUtil {

    /**
     * Do not instantiate.
     */
    protected ReaderUtil() {
    }

    /** Default buffer size */
    private static final int BUF_SIZE = 4096;

    /**
     * Creates a {@link Reader} to read from a file with the specified encoding.
     *
     * @param is

from typing import Annotated

from fastapi import Body, FastAPI
from pydantic import BaseModel, Field

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = Field(
        default=None, title="The description of the item", max_length=300
    )
    price: float = Field(gt=0, description="The price must be greater than zero")
    tax: float | None = None


@app.put("/items/{item_id}")

 */
package org.codelibs.fess.app.web.admin.relatedquery;

/**
 * The search form for Related Query.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The search term field for related queries.
     */
    public String term;

    /**

 */
package org.codelibs.fess.app.web.admin.dict.mapping;

import org.lastaflute.web.validation.Required;

/**
 * The search form for Mapping.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The dictionary ID field for mapping dictionary operations.
     */
    @Required
    public String dictId;