Please help me, I am a newbie…..

I have a class which is looking for JNDI in Jboss, I have deployed the jar file for this project in Jboss deploy directory.
Can any one explain me, where should I place my datasource xml file, i.e should I place it in the deploy directory itself?
What should I name the XML files?
Upon seeing the files I thought I should name them as
proxy-ds.xml, proxy-backup-ds.xml, web-ds.xml.
Am I right? Or should I name it differently?



public enum ProxyDbMode {PRIMARY, BACKUP};
private ProxyDbMode proxyMode = ProxyDbMode.PRIMARY;

private Connection getProxyDbConnection() throws ErpProxyDaoException, SQLException {

Connection con;

if (this.proxyMode != ProxyDbMode.PRIMARY) {
con = this.connectToDatabase("proxy");
ErpProxyProgressDAO.logger.info("Connected to proxy primary");
}
else {
con = this.connectToDatabase("proxy-backup");
ErpProxyProgressDAO.logger.info("Connected to proxy backup");
}

return con;
}

private Connection getQadWebDbConnection() throws ErpProxyDaoException, SQLException {
Connection con = this.connectToDatabase("web");
ErpProxyProgressDAO.logger.info("Connected to web db");
return con;
}


private Connection connectToDatabase(String name) throws ErpProxyDaoException, SQLException{

Context ctx = null;
DataSource ds = null;
try{
ctx = new InitialContext();
ds = (DataSource) ctx.lookup("java:" + name + "-ds");
}catch(Exception e){
throw new ErpProxyDaoException("to throw NamingException -- ", e);
}

return ds.getConnection();
}
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And how should I make sure that the connection closes, when ever I call this Method?

Thanks for taking time and looking at my question. Please respond......