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jdbc: DriverAction support #174

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@nicktorwald

Description

@nicktorwald

This interface may be implemented by a driver that wants to be notified by DriverManager when the driver is deregistered.

A DriverAction implementation is not intended to be used directly by applications. A JDBC Driver may choose to create its DriverAction implementation in a private class to avoid it being called directly.

The JDBC driver's static initialization block must call DriverManager.registerDriver(java.sql.Driver, java.sql.DriverAction) in order to inform DriverManager which DriverAction implementation to call when the JDBC driver is de-registered.

Example:

public class SQLDriver implements java.sql.Driver {
    static SQLDriverAction driverAction = new SQLDriverAction();
    static {
        try {
            java.sql.DriverManager.registerDriver(new SQLDriver(), driverAction);
        } catch (SQLException e) {
            throw new RuntimeException("Can't register driver!");
        }
    }
   
    private class SQLDriverAction implements java.sql.DriverAction {
        ...
    }
}

See more here.

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