DatasourceAppender

hi.... what do you think about a DatasourceAppender? This is very simple. It overrides getConnection and closeConnection methods of org.apache.log4j.jdbc.JDBCAppender class and it is configurable by a *-log4j.xml file. Here there is an example of xml file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

<appender name="DATABASE" class="org.jboss.logging.appender.DatasourceAppender">
<param name="Threshold" value="INFO"/>
<param name="datasource" value="java:/PortalDS"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value=
"INSERT INTO JBP_LOGGING_SAMPLES_USERS (log_date, log_type, log_user, operation) VALUES ( '%d

{yyyy-MM-dd HH:mm:ss.SSS}

','%p', '%C;%L', '%C;%L')"/>
</layout>
</appender>

<category name="org.jboss.portal.core.identity.UsersActivityStatsServiceImpl">
<appender-ref ref="DATABASE"/>
</category>

</log4j:configuration>

it is the same configuration for JDBCAppender but there is a 'datasource' parameter so you can specify the datasource location. Below there is the whole class:

/*

• JBoss, Home of Professional Open Source
• Copyright 2005, JBoss Inc., and individual contributors as indicated
• by the @authors tag. See the copyright.txt in the distribution for a
• full listing of individual contributors.
  *
• This is free software; you can redistribute it and/or modify it
• under the terms of the GNU Lesser General Public License as
• published by the Free Software Foundation; either version 2.1 of
• the License, or (at your option) any later version.
  *
• This software is distributed in the hope that it will be useful,
• but WITHOUT ANY WARRANTY; without even the implied warranty of
• MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
• Lesser General Public License for more details.
  *
• You should have received a copy of the GNU Lesser General Public
• License along with this software; if not, write to the Free
• Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
• 02110-1301 USA, or see the FSF site: http://www.fsf.org.
  */
  package org.jboss.logging.appender;

import java.sql.Connection;
import java.sql.SQLException;

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

/**

• An extension of the default Log4j JDBCAppender which will use a datasource to
• handle datas into database.
• @version <tt>$Revision: 1958 $</tt>
• @author <a href="mailto:jedim@vige.it">Luca Stancapiano</a>
  */
  public class DatasourceAppender extends org.apache.log4j.jdbc.JDBCAppender {

/**

• URL of the DB for default connection handling
  */
  protected String datasource = "java:/DefaultDS";
  protected DataSource ds;

public void setDatasource(final String datasource)

{ this.datasource = datasource; }

/**

• I override this method to get a connection from datasource.
  */
  protected Connection getConnection() throws SQLException {
  if (connection == null || connection.isClosed())
  Unknown macro: { if (ds == null) try { InitialContext ic = new InitialContext(); ds = (DataSource) ic.lookup(datasource); } catch (NamingException e) { e.printStackTrace(); } connection = ds.getConnection(); }

return connection;
}

protected void closeConnection(Connection con) {
try

{ connection.close(); }

catch (SQLException ex)

{ ex.printStackTrace(); }

}
}