# Codificador Compatível com JSON

Existem alguns casos em que você pode precisar converter um tipo de dados (como um modelo Pydantic) para algo compatível com JSON (como um `dict`, `list`, etc).

Por exemplo, se você precisar armazená-lo em um banco de dados.

Para isso, **FastAPI** fornece uma função `jsonable_encoder()`.

## Usando a função `jsonable_encoder`

     * responsible for creating a copy of the original data and store the copy in the cache.
     *
     * @param request The repository request from which this cache was retrieved, must not be {@code null}.
     * @param key The key to use associate the data with, must not be {@code null}.
     * @param data The data to store in the cache, may be {@code null}.
     */
    void put(RepositoryRequest request, Object key, Object data);

     * メソッドを呼び出してその戻り値を返します。
     *
     * @param <T>
     *            メソッドの戻り値の型
     * @param target
     *            対象のオブジェクト。{@literal null}であってはいけません
     * @param args
     *            メソッドの引数
     * @return メソッドの戻り値
     */
    <T> T invoke(Object target, Object... args);

    /**
     * staticなメソッドを呼び出してその戻り値を返します。
     *
     * @param <T>
     *            メソッドの戻り値の型
     * @param args

     *
     * @param clazz
     *            クラス。{@literal null}であってはいけません
     * @return {@link ClassIterator}をラップした{@link Iterable}
     */
    public static Iterable<Class<?>> iterable(final Class<?> clazz) {
        return iterable(clazz, true);
    }

    /**
     * for each構文で使用するために{@link ClassIterator}をラップした{@link Iterable}を返します。
     *
     * @param clazz

        return toId(groupId, artifactId, version);
    }

    /**
     * Creates a user-friendly artifact id from the specified coordinates.
     *
     * @param groupId The group id, may be {@code null}.
     * @param artifactId The artifact id, may be {@code null}.
     * @param version The version, may be {@code null}.
     * @return The user-friendly artifact id, never {@code null}.
     */

 * </ul>
 *
 * @author Kurt Alfred Kluever
 */
public class MessageDigestAlgorithmBenchmark {
  @Param({"10", "1000", "100000", "1000000"})
  int size;

  @Param Algorithm algorithm;
  @Param HashMethod hashMethod;

  private enum HashMethod {
    MESSAGE_DIGEST_API() {
      @Override
      public byte[] hash(Algorithm algorithm, byte[] input) {

 * </ul>
 *
 * @author Kurt Alfred Kluever
 */
public class MessageDigestAlgorithmBenchmark {
  @Param({"10", "1000", "100000", "1000000"})
  int size;

  @Param Algorithm algorithm;
  @Param HashMethod hashMethod;

  private enum HashMethod {
    MESSAGE_DIGEST_API() {
      @Override
      public byte[] hash(Algorithm algorithm, byte[] input) {

   * Puts a chunk of an array of bytes into this sink. {@code bytes[off]} is the first byte written,
   * {@code bytes[off + len - 1]} is the last.
   *
   * @param bytes a byte array
   * @param off the start offset in the array
   * @param len the number of bytes to write
   * @return this instance
   * @throws IndexOutOfBoundsException if {@code off < 0} or {@code off + len > bytes.length} or
   *     {@code len < 0}
   */
  @CanIgnoreReturnValue

      }

      @Override
      boolean isNullable(Parameter param) {
        return FROM_DECLARATION_ANNOTATIONS_ONLY.isNullable(param)
            || containsNullable(param.getAnnotatedType().getAnnotations())
            || isNullableTypeVariable(param.getAnnotatedType().getType());
      }

      boolean isNullableTypeVariable(Type type) {

     */
    protected final int getDataCount () {
        return this.dataCount;
    }


    /**
     * @param dataCount
     *            the dataCount to set
     */
    public final void setDataCount ( int dataCount ) {
        this.dataCount = dataCount;
    }


    /**
     * @param buffer
     */
    public void setBuffer ( byte[] buffer ) {
        this.txn_buf = buffer;
    }