MAX_TERMINAL_WIDTH,
                    Math.max(terminalWidth <= 0 ? DEFAULT_TERMINAL_WIDTH : terminalWidth, MIN_TERMINAL_WIDTH));
            lineLength = terminalWidth - MAX_LOG_PREFIX_SIZE;
            maxProjectNameLength = lineLength - PROJECT_STATUS_SUFFIX_SIZE;
        }
    }

    @Override
    public void projectDiscoveryStarted(ExecutionEvent event) {
        if (logger.isInfoEnabled()) {

            alias=alias,
            title=title,
            description=description,
            gt=gt,
            ge=ge,
            lt=lt,
            le=le,
            min_length=min_length,
            max_length=max_length,
            discriminator=discriminator,
            multiple_of=multiple_of,
            allow_inf_nan=allow_inf_nan,
            max_digits=max_digits,

        serialization_alias=serialization_alias,
        title=title,
        description=description,
        gt=gt,
        ge=ge,
        lt=lt,
        le=le,
        min_length=min_length,
        max_length=max_length,
        pattern=pattern,
        regex=regex,
        discriminator=discriminator,
        strict=strict,
        multiple_of=multiple_of,

from fastapi import FastAPI, Query
from typing_extensions import Annotated

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[str, Query(min_length=3)] = ...):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

// CHECKSTYLE_OFF: RegexpHeader|LineLength
/**
 * XML reader and writer classes for Maven POM, generated from <code>maven.mdo</code> model.
 * These classes use
 * <a href="https://codehaus-plexus.github.io/plexus-utils/apidocs/org/codehaus/plexus/util/xml/pull/package-summary.html">plexus-utils'
 * XML Pull Parser API</a> for their internal XML handling and

```

But we are now declaring it with `Query`, for example like:

//// tab | Annotated

```Python
q: Annotated[Union[str, None], Query(min_length=3)] = None
```

////

//// tab | non-Annotated

```Python
q: Union[str, None] = Query(default=None, min_length=3)
```

////

So, when you need to declare a value as required while using `Query`, you can simply not declare a default value:

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[str, Query(min_length=3)] = ...):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

Isso irá validar os dados, mostrar um erro claro quando os dados forem inválidos, e documentar o parâmetro na *operação de rota* do esquema OpenAPI..

## Adicionando mais validações

Você também pode incluir um parâmetro `min_length`:

```Python hl_lines="10"
{!../../docs_src/query_params_str_validations/tutorial003.py!}
```

## Adicionando expressões regulares

```Python
q: str = Query(None, max_length=50)
```

이는 데이터를 검증할 것이고, 데이터가 유효하지 않다면 명백한 오류를 보여주며, OpenAPI 스키마 *경로 작동*에 매개변수를 문서화 합니다.

## 검증 추가

매개변수 `min_length` 또한 추가할 수 있습니다:

```Python hl_lines="9"
{!../../docs_src/query_params_str_validations/tutorial003.py!}
```

## 정규식 추가

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str = Query(default=..., min_length=3)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})