org.apache.log.output.db

Class AbstractJDBCTarget

public abstract class AbstractJDBCTarget extends AbstractTarget

Abstract JDBC target.

Author: Avalon Development Team Peter Donald

Constructor Summary
protected	AbstractJDBCTarget(DataSource dataSource) Creation of a new instance of the AbstractJDBCTarget.

Method Summary
protected void	checkConnection() Utility method to check connection and bring it back up if necessary.
void	close() Shutdown target.
protected void	closeConnection() Close connection to underlying database.
protected void	doProcessEvent(LogEvent event) Process a log event, via formatting and outputting it.
protected Connection	getConnection() Utility method for subclasses to access connection.
protected boolean	isStale() Detect if connection is stale and should be reopened.
protected void	open() Startup log session.
protected void	openConnection() Open connection to underlying database.
protected abstract void	output(LogEvent event) Output a log event to DB.

Constructor Detail

AbstractJDBCTarget

protected AbstractJDBCTarget(DataSource dataSource)

Creation of a new instance of the AbstractJDBCTarget.

Parameters: dataSource the JDBC datasource

Method Detail

checkConnection

protected final void checkConnection()

Utility method to check connection and bring it back up if necessary.

close

public void close()

Shutdown target. Attempting to write to target after close() will cause errors to be logged.

closeConnection

protected void closeConnection()

Close connection to underlying database.

doProcessEvent

protected void doProcessEvent(LogEvent event)

Process a log event, via formatting and outputting it.

Parameters: event the log event

Throws: Exception if an event processing error occurs

getConnection

protected final Connection getConnection()

Utility method for subclasses to access connection.

Returns: the Connection

isStale

protected boolean isStale()

Detect if connection is stale and should be reopened.

Returns: true if connection is stale, false otherwise

open

protected void open()

Startup log session.

openConnection

protected void openConnection()

Open connection to underlying database.

output

protected abstract void output(LogEvent event)

Output a log event to DB. This must be implemented by subclasses.

Parameters: event the log event.