public static void main(String[] argv) {
try {
String dmds_name = null;
String cpds_name = null;
String pbds_name = null;
if (argv.length == 3) {
dmds_name = argv[0];
cpds_name = argv[1];
pbds_name = argv[2];
} else usage();
InitialContext ctx = new InitialContext();
DataSource dmds = (DataSource) ctx.lookup(dmds_name);
dmds.getConnection().close();
System.out.println(
"DriverManagerDataSource " + dmds_name + " sucessfully looked up and checked.");
ConnectionPoolDataSource cpds = (ConnectionPoolDataSource) ctx.lookup(cpds_name);
cpds.getPooledConnection().close();
System.out.println(
"ConnectionPoolDataSource " + cpds_name + " sucessfully looked up and checked.");
DataSource pbds = (DataSource) ctx.lookup(pbds_name);
pbds.getConnection().close();
System.out.println(
"PoolBackedDataSource " + pbds_name + " sucessfully looked up and checked.");
} catch (Exception e) {
e.printStackTrace();
}
}
public ResultSet getPrefixName() throws SQLException, NamingException {
String sql_PrefixName = "SELECT prefix_id,prefixname,abbreviation FROM hex.ref_prefixname";
ctx = new InitialContext();
ds = (DataSource) ctx.lookup("jdbc/HEX");
conn = ds.getConnection();
pstmt = conn.prepareStatement(sql_PrefixName);
rs = pstmt.executeQuery();
return rs;
}
public Connection getConnection() throws Exception {
InitialContext ctx = null;
ctx = new InitialContext();
if (getDataSourceJndiName() == null)
throw (new Exception("Data Source JNDI name is null. Check whether the JNDI name is null."));
DataSource ds = (javax.sql.DataSource) ctx.lookup(getDataSourceJndiName());
Connection conn = ds.getConnection();
return conn;
}
/**
* Constructor encargado de iniciar el contexto y el objeto DataSource.
*
* @param dataSourceName Nombre del DataSource que se empleará
* @throws Exception La excepción que puede arrojarse se debe a que no se cree el objeto
* DataSource.
*/
public DbConnection(String dataSourceName) throws Exception {
try {
this.dataSourceName = dataSourceName;
InitialContext iCtx = new InitialContext();
this.dataSource = (javax.sql.DataSource) iCtx.lookup(dataSourceName);
} catch (Exception e) {
// System.out.print("Error en constructor de DBConnection: "+e.getMessage());
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
String msg = sw.toString();
// System.out.print("Error en constructor de DBConnection: " + msg);
e.printStackTrace();
}
}
public static Connection getConnect() throws SQLException, NamingException {
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup("java:/comp/env/jdbc/chatdb");
return ds.getConnection();
}