Each database server vendor provides the implementation for that interface (for example, oracle implements the oracle.jdbc.pool.OracleConnectionPoolDataSource class).
每家数据库服务器供应商都提供该接口的实现(例如，oracle实现oracle . jdbc . pool . oracleconnectionpooldatasource类)。
It also protects you from using any vendor-specific additions to the parser class.
它还防止向语法分析器类添加任何特定于供应商的附加功能。
A vendor-defined factory class will expose methods that allow the programmer to set the connection parameters.
供应商定义的工厂类将提供方法以允许程序员设置连接参数。
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