return 0L;
    }

    public boolean updateDocument(final SearchEngineClient searchEngineClient, final String id, final String field, final Object value) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.update(fessConfig.getIndexDocumentUpdateIndex(), id, field, value);
    }

    public boolean deleteDocument(final SearchEngineClient searchEngineClient, final String id) {

                        setMechanismListMIC(mechanismListMIC.getOctets());
                        break;
                    default:
                        throw new IOException("Malformed token field.");
                    }
                }
        }
    }

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null,
      "url": "https://errors.pydantic.dev/2.1/v/missing"
    }
  ]
}
```

Da `needy` ein erforderlicher Parameter ist, müssen Sie ihn in der URL setzen:

```

本例把标准的 `dataclasses` 直接替换为 `pydantic.dataclasses`：

```{ .python .annotate hl_lines="1  5  8-11  14-17  23-25  28" }
{!../../docs_src/dataclasses/tutorial003.py!}
```

1. 本例依然要从标准的 `dataclasses` 中导入 `field`；

2. 使用 `pydantic.dataclasses` 直接替换 `dataclasses`；

3. `Author` 数据类包含 `Item` 数据类列表；

4. `Author` 数据类用于 `response_model` 参数；

5. 其它带有数据类的标准类型注解也可以作为请求体；

    本例使用的是 `Item` 数据类列表；

	// init container termination message and exit code.
	SidecarAnnotation  string
	InitContainerName  string
	InitTerminationMsg string
	InitExitCode       int

	// Label and field selectors to select pods managed by race repair.
	LabelSelectors string
	FieldSelectors string
}

func (c InstallConfig) String() string {
	var b strings.Builder

			// incorrectly believed that the old GNU format had a prefix field.
			// This is wrong and leads to an output file that mangles the
			// atime and ctime fields, which are often left unused.
			//
			// In order to continue reading tar files created by former, buggy
			// versions of Go, we skeptically parse the atime and ctime fields.
			// If we are unable to parse them and the prefix field looks like

			return err
		}
	case !f.Tag.IsEmpty():
		if err := e.EncodeElement(f.Tag, xml.StartElement{Name: xml.Name{Local: "Tag"}}); err != nil {
			return err
		}
	default:
		// Always print Prefix field when both And & Tag are empty
		if err := e.EncodeElement(f.Prefix, xml.StartElement{Name: xml.Name{Local: "Prefix"}}); err != nil {
			return err
		}
	}

	return e.EncodeToken(xml.EndElement{Name: start.Name})
}

  private final ImmutableList<Annotation> annotations;

  /**
   * An {@code AnnotatedType} instance, or {@code null} under Android VMs (possible only when using
   * the Android flavor of Guava). The field is declared with a type of {@code Object} to avoid
   * compatibility problems on Android VMs. The corresponding accessor method, however, can have the

    private static final char HANKAKU_KATAKANA_LAST_CHAR = HANKAKU_KATAKANA[HANKAKU_KATAKANA.length - 1];

    @Override
    public String normalize(final String s, final String field, final String... langs) {
        if (s.length() == 0) {
            return s;
        }
        if (s.length() == 1) {
            return hankakuKatakanaToZenkakuKatakana(s.charAt(0)) + "";
        }

                    if (v4src != null) {
                        Field field = InputSource.class.getDeclaredField("modelId");
                        field.setAccessible(true);
                        field.set(v4src, ModelProblemUtils.toId(model));
                    }
                } catch (Throwable t) {
                    // TODO: use a lazy source ?