final SearchRequestParams params, final OptionalThing<FessUserBean> userBean) {
        if (logger.isDebugEnabled()) {
            logger.debug("Sending query to main searcher: query={}", query);
        }
        final int pageSize = params.getPageSize();
        try {
            final SearchResult searchResult = searcher.search(query, params, userBean);

    if not user:
        raise HTTPException(status_code=403, detail="Not authorized")


def generate_stream(query: str):
    for ch in query:
        yield ch
        time.sleep(0.1)


@app.get("/generate", dependencies=[Depends(get_user)])
def generate(query: str):

from dirty_equals import IsPartialDict
from fastapi import Cookie, FastAPI, Header, Query
from fastapi.testclient import TestClient
from pydantic import BaseModel, Field

app = FastAPI()


class Model(BaseModel):
    param: str = Field(alias="param_alias")


@app.get("/query")
async def query_model(data: Model = Query()):
    return {"param": data.param}


@app.get("/header")
async def header_model(data: Model = Header()):

 * list is a single empty string: `[""]`.
 *
 * ### Query
 *
 * The query is optional: it can be null, empty, or non-empty. For many HTTP URLs the query string
 * is subdivided into a collection of name-value parameters. This class offers methods to set the
 * query as the single string, or as individual name-value parameters. With name-value parameters

        });

        String query = ComponentUtil.getQueryStringBuilder().params(params).sortField(params.getSort()).build();
        List<Map<String, Object>> documentItems;
        try {
            documentItems = searchInternal(query, params, userBean);
        } catch (final InvalidQueryException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Invalid query: {}", query, e);
            }

{* ../../docs_src/path_params_numeric_validations/tutorial006_an_py39.py hl[13] *}

## Recap { #recap }

With `Query`, `Path` (and others you haven't seen yet) you can declare metadata and string validations in the same ways as with [Query Parameters and String Validations](query-params-str-validations.md){.internal-link target=_blank}.

And you can also declare numeric validations:

* `gt`: `g`reater `t`han

`Field`는 `Query`, `Path`와 `Body`와 같은 방식으로 동작하며, 모두 같은 매개변수들 등을 가집니다.

/// note | 기술적 세부사항

실제로 `Query`, `Path`등, 여러분이 앞으로 볼 다른 것들은 공통 클래스인 `Param` 클래스의 서브클래스 객체를 만드는데, 그 자체로 Pydantic의 `FieldInfo` 클래스의 서브클래스입니다.

그리고 Pydantic의 `Field` 또한 `FieldInfo`의 인스턴스를 반환합니다.

`Body` 또한 `FieldInfo`의 서브클래스 객체를 직접적으로 반환합니다. 그리고 `Body` 클래스의 서브클래스인 것들도 여러분이 나중에 보게될 것입니다.

      ) {
        builder.query("a${value}z")
      }

      override operator fun get(url: HttpUrl): String {
        val query = url.query
        return query!!.substring(1, query.length - 1)
      }
    },

    QUERY_VALUE {
      override fun urlString(value: String): String = "http://example.com/?q=a${value}z"

      override fun encodedValue(url: HttpUrl): String {
        val query = url.encodedQuery

                cb.query().setDescription_Wildcard(dataConfigPager.description);
            } else if (dataConfigPager.description.endsWith("*")) {
                cb.query().setDescription_Prefix(dataConfigPager.description.replaceAll("\\*$", StringUtil.EMPTY));
            } else {
                cb.query().setDescription_MatchPhrase(dataConfigPager.description);
            }
        }

        return getComponent(SAMBA_HELPER);
    }

    /**
     * Gets the query helper component.
     * @return The query helper.
     */
    public static QueryHelper getQueryHelper() {
        return getComponent(QUERY_HELPER);
    }

    /**
     * Gets the query field configuration.
     * @return The query field config.
     */
    public static QueryFieldConfig getQueryFieldConfig() {