实现 AbstractMultiTenantConnectionProvider

我正在尝试使用休眠多租户（来自第16章).

现在我的扩展存储管理器使用此方法启动多租户会话：

public Session getClabSession(int serverId, String customerSchema) {
    if (!clabFactories.containsKey(serverId)) {
        DbServers d = databaseConfigurations.get(serverId);
        clabCustomerConfig.setProperty(
            "hibernate.connection.url",
            ResourceBundleService.getInstance().decorateBundle(
                "database.connection.pattern", d.getHost(),
                d.getPort()));
        ServiceRegistry serviceRegistry = new ServiceRegistryBuilder()
            .applySettings(clabCustomerConfig.getProperties())
            .buildServiceRegistry();
        SessionFactory factory = clabCustomerConfig
            .buildSessionFactory(serviceRegistry);
        clabFactories.put(d.getId(), factory);
        serviceRegistry = null;
        factory = null;
    }
    Session session = clabFactories.get(serverId).withOptions()
        .tenantIdentifier(customerSchema).openSession();
    session.setDefaultReadOnly(false);
    return session;

}

显然，我在测试时遇到了第一个错误，因为我完全错过了多租户连接提供者正如所解释的here.

使用 grepcode 我发现抽象多租户连接提供者这看起来像我想用的。所以我创建了我的类来扩展它：

public class XMLDMultiTenantConnectionProvider extends
    AbstractMultiTenantConnectionProvider {

    /**
     * 
     */
    private static final long serialVersionUID = -6679645015449636823L;

    @Override
    protected ConnectionProvider getAnyConnectionProvider() {
    return null;
    }

    @Override
    protected ConnectionProvider selectConnectionProvider(
        String tenantIdentifier) {
    // TODO Auto-generated method stub
    return null;
    }

}

但我现在对在这两种情况下使用什么来获取 ConnectionProvider 有点一无所知。你能帮助我吗？

PS：我发现连接提供者生成器。你认为我可以用它作为例子吗？

我认为您可以拥有自己的抽象类实现，如下所示：

public class XMLDMultiTenantConnectionProvider extends AbstractMultiTenantConnectionProvider {


      private final ConnectionProvider xml1 = ConnectionProviderBuilder.buildConnectionProvider("xml1DataSource");
      private final ConnectionProvider xml2 = ConnectionProviderBuilder.buildConnectionProvider("xml2DataSource");

    /**
     * 
     */
    private static final long serialVersionUID = -6679645015449636823L;

    @Override
    protected ConnectionProvider getAnyConnectionProvider() {
         //Default Datasource (in this case i chose the first one as default)
         return xml1;
    }

    @Override
    protected ConnectionProvider selectConnectionProvider(String tenantIdentifier) {

    if( "xml1".equals(tenantIdentifier) ) 
        return xml1;

    if( "xml2".equals(tenantIdentifier) ) 
        return xml2;

    return null;
    }

}

我认为这可能是一个很好且可以理解的例子......