out.write(in);
            }
        });
    }

    /**
     * Determines the MIME type of an image file based on its file extension.
     *
     * @param imageFile the image file
     * @return the MIME type string
     */
    protected String getImageMimeType(final File imageFile) {

## Important Notes

### No Database Changes Required

- Language configuration is entirely file-based
- No database or OpenSearch index updates needed
- Settings are loaded at application startup and cached

### Fallback Mechanism

If a translation is missing in `fess_label_[locale].properties`, Fess automatically falls back to the base `fess_label.properties` (English).

### Language Code Format

Use standard locale codes:

import org.apache.maven.model.profile.ProfileActivationContext;
import org.codehaus.plexus.interpolation.InterpolationException;
import org.codehaus.plexus.util.StringUtils;

/**
 * Determines profile activation based on the existence/absence of some file.
 * File name interpolation support is limited to <code>${project.basedir}</code>
 * system properties and user properties.
 *
 * @see ActivationFile

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.util.Base64;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.apache.commons.lang3.StringUtils;

   * (In other words, this method must allocate a new array). The caller is thus free to modify the
   * returned array.
   *
   * <p>This method acts as bridge between array-based and collection-based APIs.
   *
   * @return an array containing all of the elements in this queue
   */
  @CanIgnoreReturnValue // pushed down from class to method
  @Override
  public Object[] toArray() {

   * Arrays#hashCode(Object[])}. Note that array arguments to this method, with the exception of a
   * single Object array, do not get any special handling; their hash codes are based on identity
   * and not contents.
   *
   * <p>This is useful for implementing {@link Object#hashCode()}. For example, in an object that
   * has three properties, {@code x}, {@code y}, and {@code z}, one could write:
   *

 * the backing object, but relies on {@code Object}'s implementation. This is necessary to preserve
 * the symmetry of {@code equals}. Custom definitions of equality are usually based on an interface,
 * such as {@code Set} or {@code List}, so that the implementation of {@code equals} can cast the
 * object being tested for equality to the custom interface. {@code ForwardingObject} implements no

  }

  @Override
  public void write(byte[] bytes, int off, int len) throws IOException {
    hasher.putBytes(bytes, off, len);
    out.write(bytes, off, len);
  }

  /**
   * Returns the {@link HashCode} based on the data written to this stream. The result is
   * unspecified if this method is called more than once on the same instance.
   */
  public HashCode hash() {
    return hasher.hash();
  }

    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */
    int getLineNumber();

    /**

Verás ejemplos de esto en los próximos capítulos, sobre bases de datos relacionales y NoSQL, seguridad, etc.

## Compatibilidad de **FastAPI** { #fastapi-compatibility }

La simplicidad del sistema de inyección de dependencias hace que **FastAPI** sea compatible con:

* todas las bases de datos relacionales
* bases de datos NoSQL
* paquetes externos
* APIs externas