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javax.naming.NoInitialContextException: while running JUNIT test cases in webservices

I have JNDI config for all possible database connectivity in my application. Meanwhile I am using JUNIT to test my applications. I find successful connection form my webservices class invocation but error throws while calling it through junit test class.
My JNDI setting is
public static Connection getConnectionPool() {
Connection conn = null;
System.out.println("Creating connection pool.");
try {
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup(getJNDIName());
conn = ds.getConnection();
} catch (SQLException e1) {
e1.printStackTrace();
} catch (NamingException e) {
e.printStackTrace();
}
return conn;
}
private static String getJNDIName()
{
if(!readJNDI)
{
try{
Properties prop = new Properties();
prop.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("config.properties"));
JNDIName = prop.getProperty("jndi.name");
System.out.println("JNDIName : "+JNDIName);
readJNDI = true;
}catch(Exception ex){
ex.printStackTrace();
}
}
return JNDIName;
}
Below mentioned is the error.
javax.naming.NoInitialContextException: Need to specify class name in
environment or system property, or as an applet parameter, or in an
application resource file: java.naming.factory.initial
How do I resolve it.?
Thanks in advance.

You should use a local datasource.
Just pull out the DataSource/TransactionManager definition into a separate XML file, and use that instead of the JNDI one during testing.
You can still use all the rest of your configuration.

JNDI Lookup Issue with Weblogic

I'm getting "While trying to lookup 'jdbc.LogDB' didn't find subcontext 'jdbc'. Resolved ''" error when i try to get connection from the Weblogic. I created and tested the datasource and it's working. Also created the target servers. Datasource name is "jdbc/LogDb". Below is the test code i wrote.
public class TestUtils {
private static final Logger logger = LoggerFactory.getLogger(TestUtils.class.getName());
public DataSource ds = null;
public String testConnectionPool() throws SQLException {
Context ctx = null;
Hashtable ht = new Hashtable();
Connection conn;
String result = "";
ht.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
ht.put(Context.SECURITY_PRINCIPAL, "weblogic");
ht.put(Context.SECURITY_CREDENTIALS, "weblogic");
try {
ctx = new InitialContext(ht);
ds = (DataSource) ctx.lookup("jdbc/LogDB");
logger.debug("Weblogic Connection Pool Created");
conn = ds.getConnection();
Statement stmt = conn.createStatement();
stmt.execute("some sql");
ResultSet rs = stmt.getResultSet();
if(rs.next()){
result = result + rs.getString(1);
}
stmt.close();
conn.close();
} catch (NamingException e) {
logger.error("Naming Exception occured at connect: " + e.getMessage());
} catch (Exception e){
logger.error("Exception occured at connect: "+ e.getMessage());
} finally {
try {
if (ctx != null) {
ctx.close();
}
}
catch (Exception e) {
logger.error("Ctx Error");
}
}
return result;
}
}
I tried the following names
"java:jdbc/LogDb"
"java:comp/env" variations etc.
Thanks for the kind answers

EJB : Achieving Transaction propagation through Bean Managed Transaction?

I have a requirement of trying to achieve transaction propagation across multiple stateful beans
I have 3 Stateful EJB;s in my application.. The start and end transaction is controlled be an external java application through remote interface method invocation.
#Remote
#Stateful
public class MyEJB1 implements RemoteEJB1{
#EJB
private RemoteEJB2 ejb2;
#Resource
UserTransaction utx;
public void startTransaction() {
try {
utx.begin();
} catch (NotSupportedException e) {
throw new EJBException(e);
} catch (SystemException e) {
throw new EJBException(e);
}
}
public void commitTransaction() {
try {
utx.commit();
} catch (SecurityException e) {
throw new EJBException(e);
} catch (IllegalStateException e) {
throw new EJBException(e);
} catch (RollbackException e) {
throw new EJBException(e);
} catch (HeuristicMixedException e) {
throw new EJBException(e);
} catch (HeuristicRollbackException e) {
throw new EJBException(e);
} catch (SystemException e) {
throw new EJBException(e);
}
}
public RemoteEJB2 getEJB2() {
return ejb2;
}
}
public class MyEJB2 implements RemoteEJB2{
#EJB
private RemoteEJB3 ejb3;
#Resource(name = "java:jboss/datasources/MyDS")
private DataSource ds;
public RemoteEJB3 getEJB3() {
return ejb3;
}
#TransactionAttribute(TransactionAttributeType.MANDATORY)
public void insertElement(String elementName) {
PreparedStatement pStat = null;
Connection con = null;
try {
con = ds.getConnection();
String sql = "insert into TRANSACTIONTEST(COL1,COL2) values(?,?)";
pStat = con.prepareStatement(sql);
pStat.setString(1, elementName);
pStat.setDouble(2, Math.random());
pStat.executeUpdate();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
try {
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
public class MyEJB3 implements RemoteEJB3{
#Resource(name="java:jboss/datasources/MyDS")
private DataSource ds;
#TransactionAttribute(TransactionAttributeType.MANDATORY)
public void updateElement(String newName) {
PreparedStatement pStat = null;
Connection con = null;
try{ con = getDs().getConnection();
String sql ="update TRANSACTIONTEST set COL1=?";
pStat = con.prepareStatement(sql);
pStat.setString(1, newName);
pStat.executeUpdate();
}catch(Exception ex){
ex.printStackTrace();
}finally{
try {
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
Test Class:
public class MyTest{
public static void main(String[] args) throws Exception {
final Hashtable jndiProperties = new Hashtable();
jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
final Context context = new InitialContext(jndiProperties);
MyEJB1 ejb1 = context.lookup("ejb:/EJBTrials/MyEJB1!edu.in.ejbinterfaces. RemoteEJB1?stateful");
ejb1.startTransaction();
RemoteEJB2 ejb2 = ejb1.getEJB2();
ejb2.insertElement (“Test”);
RemoteEJB3 ejb3 = ejb2.getEJB3();
ejb3.updateElement (“UpdatedTest”);
ejb1.commitTransaction();
}
}
I would ideally like the whole transaction(record insertions in db) to be completed after invocation of commitTransaction() on RemoteEJB1 bean.
I tried combination of BMT for EJB1 and CMT for EJB2 and EJB3 which lead to EJBTransactionRequiredException being thrown
I tried to make all beans as BMT. However according to EJB3.1 spec BMT cannot be propagated across multiple beans.
Could you let me know of any ideas/links which I could use to solve this problem?
Reference Application Server : JBOSS AS 7.1

Could you let me know of any ideas/links which I could use to solve this problem?
If I understand your issue correctly, wath you need is called Client-Managed trasaction demarcation. UnLike Container Maneged Transaction, in this case the client is responsable to set the transaction boundaries (start and commit/rollback the transaction). You can get some ideas of how to implement it here.

JNDI lookup in servlets init method with property load-on-startup

I have a Servlet which initializes its DataSource in the Servlets init method (because it is accessed there the first time). When the servlet is getting loaded I get the following exception message
Cannot create JDBC driver of class '' for connect URL 'null'
But when the first request is processed the jndi lookup works fine and the DataSource is initialized properly.
Here is my DataSource class:
public class PostgresDataSource{
private static DataSource dataSource;
static {
try {
dataSource = (DataSource) new InitialContext().lookup("java:/comp/env/jdbc/somedb");
} catch (NamingException e) {
Log.logger.fatal("Failed to initialize DB!");
Log.logger.error(e.getMessage());
e.printStackTrace();
}
}
public static Connection checkOut(){
if ( dataSource != null )
{
try {
return dataSource.getConnection();
} catch (SQLException e) {
Log.logger.error("Failed to establish DB connection!");
Log.logger.error(e.getMessage());
e.printStackTrace();
return null;
}
}
else
{
Log.logger.error("Failed to check out DB-Connection: Postgres DataSource not initialized!");
return null;
}
}
public static void checkIn( Connection dbcon){
if ( dataSource != null )
{
try {
dbcon.close();
} catch (SQLException e) {
Log.logger.error("Failed to close DB connection!");
e.printStackTrace();
}
}
else
{
Log.logger.error("Cannot check in DB-Connection: Postgres DataSource not initialized!");
}
}
}
Anyone encountered the same problem? What's the reason for this and how to solve it?

Instead of using
dataSource = (DataSource) new InitialContext().lookup("java:/comp/env/jdbc/somedb");
Please use the following, this may solve the problem
InitialContext context = new InitialContext();
Context envCtx = (Context) context.lookup("java:comp/env");
dataSource = (DataSource) envCtx.lookup("jdbc/somedb");

Getting a DataSouce from url and driver

I need to initialize a DataSource given url and driver.
Its need to be generic enough to support Oracle and SQL Server.
the app is running on jboss 5.
provided sample for both:
<db-connection name="TEST-ORACLE">
<url>jdbc:oracle:thin:#test:1521:ins1</url>
<driver>oracle.jdbc.xa.client.OracleXADataSource</driver>
<user>user</user>
<password>{ENCR}oRloKFKlqXs=</password>
<min-size>5</min-size>
<max-size>30</max-size>
<idle-timeout-minutes>1</idle-timeout-minutes>
</db-connection>
<db-connections>
<db-connection name="TEST-MSSQLSERVER">
<url>jdbc:jtds:sqlserver://server:1433/db;ProgramName=program;SelectMethod=cursor;useLOBs=false</url>
<driver>net.sourceforge.jtds.jdbc.Driver</driver>
<user>user</user>
<password>{ENCR}oRloKFKlqXs=</password>
<min-size>40</min-size>
<max-size>80</max-size>
<idle-timeout-minutes>1</idle-timeout-minutes>
</db-connection>
The OracleXADataSource is implementing the inteface DataSource so its quit easy... but im not sure that generic enough.
EDIT
I wonder what should be the way to achive that if i have multipile db connections and multipile instances / schemas in those connections.....
my current code looks like:
private DataSource getDataSourceForTanent(TenantConfig i_Tenant) {
DataSource result = null;
ClassLoader loader = DBConnector.class.getClassLoader();
try {
Class driverClass = loader.loadClass(i_Tenant.getDriver());
Object driver = driverClass.newInstance();
if(driver instanceof OracleDataSource){
((OracleDataSource)driver).setURL(i_Tenant.getUrl());
((OracleDataSource)driver).setUser(i_Tenant.getUser());
((OracleDataSource)driver).setPassword(i_Tenant.getPassword());
result = (DataSource) driver;
} else if(driver instanceof Driver){
Properties prop = new Properties();
prop.put("user", i_Tenant.getUser());
prop.put("password", i_Tenant.getPassword());
prop.put("min-size", i_Tenant.getMinSize());
prop.put("max-size", i_Tenant.getMaxSize());
prop.put("idle-timeout-minutes", i_Tenant.getIdleTimeoutMinute());
Connection con = ((Driver)driver).connect(i_Tenant.getUrl(), prop);
if(con != null){
//TODO: SQLServer handling
}
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
TenantConfig is a java bean holding the xml properties.

Here's a generic code snippet to get a DataSource by JNDI name:
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/mydatasource");
But from your XML file I am not sure what the JNDI name is. What XML dialect is it?