import com.sleepycat.db.*;

public interface DbErrcall
{
	public abstract void errcall(String errpfx, String msg);
}
public class DbEnv
{
	public void set_errcall(DbErrcall errcall);
	...
}

Description

The DbEnv.set_errcall and Db.set_errcall methods are used to enhance the mechanism for reporting error messages to the application. The DbEnv.set_errcall and Db.set_errcall methods must be called with a single object argument. The object's class must implement the DbErrcall interface. In some cases, when an error occurs, Berkeley DB will invoke the object's errcall() method with two arguments; the first is the prefix string (as previously set by Db.set_errpfx or DbEnv.set_errpfx), the second will be an error message string. It is up to this method to display the message in an appropriate manner.

Alternatively, you can use the DbEnv.set_error_stream method to display the additional information via an output stream. You should not mix these approaches.

This error-logging enhancement does not slow performance or significantly increase application size, and may be run during normal operation as well as during application debugging.

The DbEnv.set_errcall interface may be used to configure Berkeley DB at any time during the life of the application.

Class

See Also