{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[40:45] hl[40:45] *}

Aquí usamos la dependencia `SessionDep` (una `Session`) para añadir el nuevo `Hero` a la instance `Session`, comiteamos los cambios a la base de datos, refrescamos los datos en el `hero` y luego lo devolvemos.

    private static final int FILE_NOTIFY_CHANGE_ALL = 0x00000FFF;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        when(mockConfig.getNotifyBufferSize()).thenReturn(4096);
        when(mockConfig.getTransactionBufferSize()).thenReturn(65535);
    }

    @Test
    @DisplayName("Test constructor initialization with basic parameters")
    void testConstructorBasic() {

        assertEquals(8, size);
        assertEquals(8, encoded);
        assertEquals(8, decoded);
        assertNotNull(str);
        assertTrue(str.contains("4096"));
    }

    /**
     * Test FileInformation constants match expected protocol values
     */
    @Test
    @DisplayName("Test FileInformation constants match SMB protocol values")

        when(handle.getPipe()).thenReturn(pipe);
        // init(th) behavior inside SmbFileInputStream constructor
        when(tree.isSMB2()).thenReturn(smb2);
        when(tree.getReceiveBufferSize()).thenReturn(4096);
        when(tree.getMaximumBufferSize()).thenReturn(65535);
        when(tree.hasCapability(anyInt())).thenReturn(false);
        return new SmbPipeInputStream(handle, tree);
    }

        SMBUtil.writeInt8(500000, buffer, 28); // Available allocation units
        SMBUtil.writeInt4(512, buffer, 36); // Sectors per unit
        SMBUtil.writeInt4(4096, buffer, 40); // Bytes per sector

        int result = response.readBytesWireFormat(buffer, bufferIndex);

        assertNotNull(response.getInfo());

![delete](https://raw.githubusercontent.com/minio/minio/master/docs/bucket/replication/DELETE_bucket_replication.png)

            byte[] buffer = new byte[24];
            // Skip idFileSystem (4 bytes)
            buffer[4] = 0x08; // sectPerAlloc = 8
            buffer[8] = 0x00;
            buffer[9] = 0x10; // alloc = 4096
            buffer[12] = 0x00;
            buffer[13] = 0x08; // free = 2048
            buffer[16] = 0x00;
            buffer[17] = 0x02; // bytesPerSect = 512

例如，如果您声明一个类型为 `Hero` 的参数，它将从 **JSON 主体**中读取数据。

同样，您可以将其声明为函数的**返回类型**，然后数据的结构就会显示在自动生成的 API 文档界面中。

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[40:45] hl[40:45] *}

</details>

这里，我们使用 `SessionDep` 依赖项（一个 `Session` ）将新的 `Hero` 添加到 `Session` 实例中，提交更改到数据库，刷新 hero 中的数据，并返回它。

### 读取 Hero 类

我们可以使用 `select()` 从数据库中**读取** `Hero` 类，并利用 `limit` 和 `offset` 来对结果进行分页。

     */
    protected FileUtil() {
    }

    /** The encoding name for UTF-8. */
    private static final String UTF8 = "UTF-8";

    /** Default Buffer Size */
    protected static final int DEFAULT_BUF_SIZE = 4096; // 4k

    /** Max Buffer Size */
    protected static final int MAX_BUF_SIZE = 10 * 1024 * 1024; // 10m

    /**
     * Validates that a given path is safe and does not attempt path traversal attacks.
     * <p>

		url:                      u,
		auth:                     auth,
		connected:                connected,
		lastConn:                 time.Now().UnixNano(),
		MaxErrResponseSize:       4096,
		HealthCheckReconnectUnit: 200 * time.Millisecond,
		HealthCheckTimeout:       time.Second,
	}
	if err != nil {
		clnt.lastErr = err
		clnt.lastErrTime = time.Now()
	}