## Dependencias para un grupo de *path operations*

Más adelante, cuando leas sobre cómo estructurar aplicaciones más grandes ([Aplicaciones Más Grandes - Múltiples Archivos](../../tutorial/bigger-applications.md){.internal-link target=_blank}), posiblemente con múltiples archivos, aprenderás cómo declarar un único parámetro `dependencies` para un grupo de *path operations*.

## Dependencias Globales

import org.codelibs.fess.util.MemoryUtil;

import jakarta.annotation.PostConstruct;

/**
 * Implementation of IndexUpdateCallback for handling document indexing operations.
 * This class manages the process of updating the search index with documents from
 * data stores, including bulk operations, document transformation, and error handling.
 */
public class IndexUpdateCallbackImpl implements IndexUpdateCallback {

type SRStatus struct {
	ReplicatedSize int64 `json:"completedReplicationSize"`
	// Total number of failed operations including metadata updates in the last minute
	Failed RTimedMetrics `json:"failedReplication"`
	// Total number of completed operations
	ReplicatedCount int64 `json:"replicationCount"`
	// Replication latency information
	Latency ReplicationLatency `json:"replicationLatency"`

import (
	"context"
	"io"
	"time"

	"github.com/minio/madmin-go/v3"
)

// StorageAPI interface.
type StorageAPI interface {
	// Stringified version of disk.
	String() string

	// Storage operations.

	// Returns true if disk is online and its valid i.e valid format.json.
	// This has nothing to do with if the drive is hung or not responding.
	// For that individual storage API calls will fail properly. The purpose

   * {@code factory}, and the multimap contents are all serializable.
   *
   * <p>The multimap is not threadsafe when any concurrent operations update the multimap, even if
   * {@code map} and the instances generated by {@code factory} are. Concurrent read operations will
   * work correctly. To allow concurrent update operations, wrap the multimap with a call to {@link
   * #synchronizedMultimap}.
   *

   * {@code factory}, and the multimap contents are all serializable.
   *
   * <p>The multimap is not threadsafe when any concurrent operations update the multimap, even if
   * {@code map} and the instances generated by {@code factory} are. Concurrent read operations will
   * work correctly. To allow concurrent update operations, wrap the multimap with a call to {@link
   * #synchronizedMultimap}.
   *

                assertTrue(variance < 50.0,
                        String.format(
                                "Extreme timing variance in concurrent operations: %.3f " + "(min: %d ns, max: %d ns, avg: %.1f ns). "
                                        + "Note: JVM timing variability is expected, constant-time implementation verified.",

 */
package org.codelibs.fess.job;

/**
 * Abstract base class for job executors that handle script execution within the job system.
 * This class provides a framework for executing scripts and managing shutdown operations.
 */
public abstract class JobExecutor {
    /** Listener to handle shutdown events */
    protected ShutdownListener shutdownListener;

    /**
     * Default constructor.
     */
    public JobExecutor() {

 */
public class DirectoryLeaseState {

    /**
     * Private constructor to prevent instantiation of this utility class
     */
    private DirectoryLeaseState() {
        // Utility class - prevent instantiation
    }

    /**
     * Directory Read and Handle caching (RH) - recommended for directory operations
     */

# Corpo - Campos

Da mesma forma que você pode declarar validações adicionais e metadados nos parâmetros de *funções de operações de rota* com `Query`, `Path` e `Body`, você pode declarar validações e metadados dentro de modelos do Pydantic usando `Field` do Pydantic.

## Importe `Field`

Primeiro, você tem que importá-lo:

{* ../../docs_src/body_fields/tutorial001.py hl[4] *}

/// warning | Aviso