java - Hibernate Multi-Tenancy 测试因 NPE 失败

Question

我正在使用基于模式的 Multi-Tenancy ，为 MultiTenantConnectionProvider 和 CurrentTenantIdentifierResolver 提供实现。尝试为单个租户获取 hibernate session 失败并出现 NPE。查看hibernate的源代码，似乎JDBCServicesImpl在else block 中将connectionProvider初始化为null

private JdbcConnectionAccess buildJdbcConnectionAccess(Map configValues) {
    final MultiTenancyStrategy multiTenancyStrategy = MultiTenancyStrategy.determineMultiTenancyStrategy( configValues );

    if ( MultiTenancyStrategy.NONE == multiTenancyStrategy ) {
        connectionProvider = serviceRegistry.getService( ConnectionProvider.class );
        return new ConnectionProviderJdbcConnectionAccess( connectionProvider );
    }
    else {
        connectionProvider = null;
        final MultiTenantConnectionProvider multiTenantConnectionProvider = serviceRegistry.getService( MultiTenantConnectionProvider.class );
        return new MultiTenantConnectionProviderJdbcConnectionAccess( multiTenantConnectionProvider );
    }
}

请在此处找到此测试用例 - http://pastebin.com/7Mt9wtHt及其堆栈跟踪 - http://pastebin.com/8ygAu7eh

我错过了一些基本的东西吗？

Answer 1

好吧，在查看源代码一段时间后。 Hibernate(目前)不支持模式导出。这是取自他们的documentation .

Currently schema export will not really work with multi-tenancy. That may not change

因此，就您的情况而言，解决方法是删除此行

config.getProperties().put(AvailableSettings.HBM2DDL_AUTO, "validate");