## com.mysql.jdbc
Interface Extension

All Known Subinterfaces:
  AuthenticationPlugin, BalanceStrategy, ConnectionLifecycleInterceptor, ExceptionInterceptor, LoadBalanceExceptionChecker, StatementInterceptor, StatementInterceptorV2

All Known Implementing Classes:
  BestResponseTimeBalanceStrategy, ConnectionImpl.ExceptionInterceptorChain, LoadBalancedAutoCommitInterceptor, NdbLoadBalanceExceptionChecker, NoSubInterceptorWrapper, RandomBalanceStrategy, ReflectiveStatementInterceptorAdapter, SequentialBalanceStrategy, StandardLoadBalanceExceptionChecker, V1toV2StatementInterceptorAdapter

    public interface Extension

Method Summary
`void` `destroy()` Called by the driver when this extension should release any resources it is holding and cleanup internally before the connection is closed.
`void` `init(Connection conn, java.util.Properties props)` Called once per connection that wants to use the extension The properties are the same ones passed in in the URL or arguments to Driver.connect() or DriverManager.getConnection().

Method Detail

### init

    void init(Connection conn,
              java.util.Properties props)
              throws java.sql.SQLException

  Called once per connection that wants to use the extension The properties are the same ones passed in in the URL or arguments to Driver.connect() or DriverManager.getConnection().

  Parameters:
    `conn` - the connection for which this extension is being created
    `props` - configuration values as passed to the connection. Note that in order to support javax.sql.DataSources, configuration properties specific to an interceptor must be passed via setURL() on the DataSource. Extension properties are not exposed via accessor/mutator methods on DataSources.
  Throws:
    `java.sql.SQLException` - should be thrown if the the Extension can not initialize itself.

### destroy

    void destroy()

  Called by the driver when this extension should release any resources it is holding and cleanup internally before the connection is closed.