NotSerializableException with BasicDataSource in JNDI - datasource

Question

I am setting up a standalone JNDI and loading a Datasource to the JNDI.
DataSource I use is: org.apache.commons.dbcp.BasicDataSource
The JNDI is set up as follows
String detectorHost = InetAddress.getLocalHost().getHostName();
System.out.println("detectorHost: " + detectorHost);
System.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
final NamingBeanImpl namingInfo = new NamingBeanImpl();
namingInfo.start();
final Main JNDIServer = new Main();
JNDIServer.setNamingInfo( namingInfo );
JNDIServer.setPort( 5400 );
JNDIServer.setBindAddress(InetAddress.getLocalHost().getHostName());
JNDIServer.start();
final Hashtable _properties = new Hashtable();
_properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
_properties.put(Context.PROVIDER_URL, "jnp://" + InetAddress.getLocalHost().getHostName() + ":5400");
final Context _context = new InitialContext(_properties);
_context.createSubcontext("jdbc");
String JNDI_PATH = "jdbc" + "/" + "mydbname";
_context.bind(JNDI_PATH, getDataSource());
I get the following exception
javax.naming.CommunicationException [Root exception is java.io.NotSerializableException: org.apache.commons.dbcp.BasicDataSource]
at org.jnp.interfaces.NamingContext.bind(NamingContext.java:677)
at org.jnp.interfaces.NamingContext.bind(NamingContext.java:611)
at javax.naming.InitialContext.bind(Unknown Source)
at com.lombardrisk.reform.integration.ReformIntegration.createJNDIServer(ReformIntegration.java:93)
at com.lombardrisk.reform.integration.ReformIntegration.main(ReformIntegration.java:44)
Caused by: java.io.NotSerializableException: org.apache.commons.dbcp.BasicDataSource
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at java.rmi.MarshalledObject.<init>(Unknown Source)
at org.jnp.interfaces.MarshalledValuePair.<init>(MarshalledValuePair.java:65)
at org.jnp.interfaces.NamingContext.createMarshalledValuePair(NamingContext.java:1425)
at org.jnp.interfaces.NamingContext.bind(NamingContext.java:640)
I don't quite follow why I am getting a NotSerializableException exception, this is a local JNDI in the same JVM and not a remote JNDI. Not sure why this occurs.
Can some one advise what is wrong here.
regards
D

Answer 1

The exception was misleading. The exception became clear after adding the following to the JVM startup
-Dsun.io.serialization.extendedDebugInfo=true
It appears I was not using the correct libraries.
I have explained the full problem and solution here in this link.
https://community.jboss.org/thread/241498
//Code to start a JNDI Server and a test client for the JNDI Context
import javax.naming.Context;
import javax.naming.InitialContext;
import org.apache.log4j.Logger;
import org.jnp.server.Main;
import org.jnp.server.NamingBeanImpl;
//Snippet of the code
System.setProperty("java.rmi.server.hostname", "localhost");
System.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
System.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
final NamingBeanImpl namingInfo = new NamingBeanImpl();
namingInfo.start();
final Main jndiServer = new Main();
jndiServer.setNamingInfo(namingInfo);
jndiServer.setPort(1099);
jndiServer.setBindAddress("localhost");
jndiServer.setRmiPort(1098);
jndiServer.setRmiBindAddress("localhost");
jndiServer.start();
final Hashtable<String, String> _properties = new Hashtable<String, String> ();
_properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.naming.java.javaURLContextFactory");
_properties.put(Context.PROVIDER_URL, "jnp://" + "localhost" + ":1099");
final Context _context = new InitialContext(_properties);
_context.createSubcontext("jdbc");
JdbcTemplate jdbcTemplate = new JdbcTemplate(getDataSource());
System.out.println("jdbcTemplate: " + jdbcTemplate.getClass());
System.out.println("getDataSource(): " + getDataSource().getClass());
_context.bind("/jdbc/reformDS", getDataSource());
//JNDI started
//Test the JNDI context
// There are 2 ways to test -
// Option 1: create a HashTable and pass the properties to the InitialContext constructor
final Hashtable<String, String> _properties = new Hashtable<String, String> ();
_properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.naming.java.javaURLContextFactory");
_properties.put(Context.PROVIDER_URL, "jnp://" + "localhost" + ":1099");
final Context _context = new InitialContext(_properties);
Object obj = _context.lookup("/jdbc/reformDS");
if (null != obj) {
System.out.println("OBJ: " + obj.getClass());
org.apache.commons.dbcp.BasicDataSource ds = (org.apache.commons.dbcp.BasicDataSource)obj;
JdbcTemplate jdbcTemplate2 = new JdbcTemplate(ds);
String sql = String.format("update MESSAGE_LOG set PROCESS_INSTANCE_ID = 123456 where ID =42395 ");
int update = jdbcTemplate2.update(sql);
System.out.println("Update*****************: " + update);
}
// Option 2: Set the System.properties and call the InitialContext
System.getProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.naming.java.javaURLContextFactory");
System.getProperty(Context.PROVIDER_URL, "jnp://" + "localhost" + ":1099");
final Context _context = new InitialContext();
Object obj = _context.lookup("/jdbc/reformDS");
if (null != obj) {
System.out.println("OBJ: " + obj.getClass());
org.apache.commons.dbcp.BasicDataSource ds = (org.apache.commons.dbcp.BasicDataSource)obj;
JdbcTemplate jdbcTemplate2 = new JdbcTemplate(ds);
String sql = String.format("update MESSAGE_LOG set PROCESS_INSTANCE_ID = 123456 where ID =42395 ");
int update = jdbcTemplate2.update(sql);
System.out.println("Update*****************: " + update);
}