如何从Connection对象中确定DBMS

Question

I have a usecase of supporting multiple RDBMS. User should define the data source as a prerequisite and at the code level i have to determine which RDBMS the user going to connect with and provide specific RDBMS attributes.

Eg:,

com.mysql.jdbc.Driver           jdbc:mysql://hostname/ databaseName
oracle.jdbc.driver.OracleDriver jdbc:oracle:thin:@hostname:port Number:databaseName

As shown above we can retrieve connection url or may be driver name and identify the RDBMS. But i want to clarify what is the best way to identify which RDBMS user is using. Any help would be greatly appreciated.

Answer 1

This is really simple. See DatabaseMetaData

DatabaseMetaData databaseMetaData = connection.getMetaData();
String databaseName = databaseMetaData.getDatabaseProductName();
String userName = databaseMetaData.getUserName();

UPDATE To answer @dnWick comment.

Yes, This DatabaseMetaData support for the wide range of RDBMS . Through the DatabaseMetaData interface we can obtain metadata about the database that we have connected. For instance, we can see what tables are defined in the database, and what columns each table has, Even we can check supported features for the database we have connected.

Example We can see if a database has support for multiple transactions, supports for UNION or not, etc.,