DataSource Binding
i am attempting to deploy a datasource object to jboss-tomcat.
however context.lookup() always returns null
the complete compilable source is listed below.
any suggestions
import java.sql.*;
import java.io.*;
import java.text.*;
import javax.sql.*;
import javax.naming.*;
import java.util.*;
import com.microsoft.jdbcx.sqlserver.*;
public class Intro {
private DataSource dataSource= null;
//----------------//
//--Creation------//
//----------------//
public Intro() throws NamingException {
initialize();
}
public Intro(String source) throws NamingException {
initialize(source);
}
public void initialize() throws NamingException {
initialize("History");
}
public void initialize(String source) throws NamingException {
// Create Naming Context
Context context= MyContext.getContext();
// Get DataSource
Object obj= context.lookup(source);
if (obj != null)
System.out.println("Object Class - " + obj.getClass());
else
System.out.println("lookup returned null");
//dataSource= (DataSource)
/* post-condition
// the history database is now referable via dataSource
*/
}
//----------------//
//--General-------//
//----------------//
public Connection getConnection() throws SQLException {
/* pre-condition
// the dataSource field is initialized
*/
return dataSource.getConnection();
}
//----------------//
//--Debugging-----//
//----------------//
public static void main(String[] args) {
try {
// create a DataSource
SQLServerDataSource x= new SQLServerDataSource();
x.setServerName("localhost");
x.setDatabaseName("History");
x.setDescription("Maintains instrument info change history");
x.setDataSourceName("History");
x.setUser("goolamr");
x.setPassword("password");
// deploy the datasource
try {
Context context= MyContext.getContext();
context.addToEnvironment("History", x);
context.bind("History", x);
System.out.println(x.toString() + " binded to History");
}
catch (NamingException ne) {
System.out.println("Failed to create the context or bind");
System.out.println("Caught Exception: " + ne.getMessage());
ne.printStackTrace();
}
//attempt to get the DataSource
System.out.println("Called Intro() Constructor");
Intro test= new Intro("/History");
System.out.println("Intro() initialization completed");
}
catch (Throwable e) {
System.out.println("Caught Exception: " + e.getMessage());
e.printStackTrace();
}
// undeploy the DataSource
finally {
try {
Context context= MyContext.getContext();
context.unbind("History");
System.out.println("History unbounded");
}
catch (NamingException ne) {
System.out.println("Failed to create the context or bind");
System.out.println("Caught Exception: " + ne.getMessage());
ne.printStackTrace();
}
}
}
}
