* 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

                SmbTransportInternal t;
                try ( SmbTreeHandleInternal th = (SmbTreeHandleInternal) f.getTreeHandle();
                      SmbSessionInternal session = th.getSession().unwrap(SmbSessionInternal.class);
                      SmbTransportInternal trans = session.getTransport().unwrap(SmbTransportInternal.class) ) {
                    t = trans;
                }
                f.close();

        this.openFlags &= ~(SmbFile.O_CREAT | SmbFile.O_TRUNC); /* in case close and reopen */
        writeSize = file.tree.session.transport.snd_buf_size - 70;

        useNTSmbs = file.tree.session.transport.hasCapability( ServerMessageBlock.CAP_NT_SMBS );
        if( useNTSmbs ) {
            reqx = new SmbComWriteAndX();
            rspx = new SmbComWriteAndXResponse();

        extraSteps = extraBuildSteps,
        preSteps = preBuildSteps
    )

    failureConditions {
        // JavaExecDebugIntegrationTest.debug session fails without debugger might cause JVM crash
        // Some soak tests produce OOM exceptions
        // There are also random worker crashes for some tests.
        // We have test-retry to handle the crash in tests

          <version>1.0.0+</version>
          <description>The artifact id of the plugin.</description>
          <type>String</type>
        </field>
        <field>
          <name>version</name>
          <version>1.0.0+</version>
          <description>The version of the plugin.</description>
          <type>String</type>
          <required>true</required>
        </field>
        <field>
          <name>goalPrefix</name>

        SmbTreeConnection treeConn = SmbTreeConnection.create(tc);
        try ( SmbTreeHandleImpl th = treeConn.connectHost(locator, locator.getServerWithDfs());
              SmbSessionImpl session = th.getSession();
              SmbTransportImpl transport = session.getTransport() ) {
            try {
                entries = doMsrpcShareEnum(tc, locator, transport.getRemoteAddress());
            }
            catch ( IOException ioe ) {

                                "name": "session_id",
                                "in": "cookie",
                                "required": True,
                                "schema": {"type": "string", "title": "Session Id"},
                            },
                            {
                                "name": "fatebook_tracker",
                                "in": "cookie",

///

### 创建一个`SessionLocal`类

每个`SessionLocal`类的实例都会是一个数据库会话。当然该类本身还不是数据库会话。

但是一旦我们创建了一个`SessionLocal`类的实例，这个实例将是实际的数据库会话。

我们将它命名为`SessionLocal`是为了将它与我们从 SQLAlchemy 导入的`Session`区别开来。

稍后我们将使用`Session`（从 SQLAlchemy 导入的那个）。

要创建`SessionLocal`类，请使用函数`sessionmaker`：

```Python hl_lines="11"
{!../../docs_src/sql_databases/sql_app/database.py!}
```

### 创建一个`Base`类

* API keys en:
    * Headers.
    * Parámetros de Query.
    * Cookies, etc.

Más todas las características de seguridad de Starlette (incluyendo **session cookies**).

Todo ha sido construido como herramientas y componentes reutilizables que son fácilmente integrados con tus sistemas, almacenamiento de datos, bases de datos relacionales y no relacionales, etc.