.setTags(new String[]{"category"})      // filter by tags
    .setRoles(new String[]{"user"})         // filter by roles  
    .setLanguages(new String[]{"en", "ja"}) // language preference
    .setFields(new String[]{"title"})       // search specific fields
    .execute()
    .getResponse();
```

## Project Structure

```
src/
├── main/java/org/codelibs/fess/suggest/

# Sorts for inner hits in collapse queries.
query.collapse.inner.hits.sorts=
# Default languages for queries.
query.default.languages=
# Default preference for JSON queries.
query.json.default.preference=_query
# Default preference for GSA queries.
query.gsa.default.preference=_query
# Language mapping for queries.
query.language.mapping=\
ar=ar\n\
bg=bg\n\
bn=bn\n\
ca=ca\n\
ckb-iq=ckb-iq\n\
ckb_IQ=ckb-iq\n\

        }
    }
    
    // Fall back to TCP
    return new SmbTransport(context, address.getAddress(), address.getPort());
}

private RdmaProvider selectRdmaProvider() {
    // Try providers in order of preference
    List<RdmaProvider> providers = Arrays.asList(
        new DisniRdmaProvider(),      // InfiniBand/RoCE
        new JxioRdmaProvider(),       // Alternative RDMA library

  /** The HTTP {@code Upgrade} header field name. */
  public static final String UPGRADE = "Upgrade";

  /**
   * The HTTP <a href="https://w3c.github.io/webappsec-upgrade-insecure-requests/#preference">{@code
   * Upgrade-Insecure-Requests}</a> header field name.
   *
   * @since 28.1
   */
  public static final String UPGRADE_INSECURE_REQUESTS = "Upgrade-Insecure-Requests";

   * or {@code 'A'} and {@code 'Z'} inclusive.
   *
   * <p>This method is significantly faster than {@link String#equalsIgnoreCase} and should be used
   * in preference if at least one of the parameters is known to contain only ASCII characters.
   *
   * <p>Note however that this method does not always behave identically to expressions such as:
   *
   * <ul>

    assertRoute(route, address, proxyA, dns.lookup(PROXY_A_HOST, 0), PROXY_A_PORT)
    routeDatabase.failed(route)
    routeSelector = newRouteSelector(address)

    // Confirm we enumerate both proxies, giving preference to the route from ProxyB.
    val selection2 = routeSelector.next()
    dns.assertRequests(PROXY_A_HOST, PROXY_B_HOST)
    assertRoute(selection2.next(), address, proxyB, dns.lookup(PROXY_B_HOST, 0), PROXY_B_PORT)

  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.
   *
   * <p><b>Discouraged:</b> Prefer using either {@code x -> x == null} or {@code Objects::isNull},
   * but note that lambdas and method references do not have human-readable {@link #toString()}
   * representations and are not serializable.
   */

  - [Apache Solr](#apache-solr)
  - [Other Search Systems](#other-search-systems)
- [Data Import Methods](#data-import-methods)
- [Configuration Migration](#configuration-migration)
- [API Reference](#api-reference)
- [Troubleshooting](#troubleshooting)
- [Migration Checklist](#migration-checklist)

---

## Supported Migration Sources

Fess provides built-in support and compatibility layers for:

        
        if (rssCapable) score += 1000;   // Prefer RSS-capable
        if (rdmaCapable) score += 2000;  // Prefer RDMA-capable
        if (!ipv6) score += 100;         // Slight preference for IPv4
        
        return score;
    }
    
    private boolean checkRSSCapability() {
        // Platform-specific RSS detection
        // Simplified implementation
        try {

    protected boolean encryptionEnabled = false;
    /** Whether SMB3 compression is enabled */
    protected boolean compressionEnabled = false;
    /** Preferred encryption ciphers in order of preference */
    protected String preferredCiphers = "AES_128_GCM,AES_128_CCM,AES_256_GCM,AES_256_CCM";
    /** Whether AES-256 encryption is enabled */
    protected boolean aes256Enabled = true;