Example usage for javax.naming Context lookup

List of usage examples for javax.naming Context lookup

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Introduction

In this page you can find the example usage for javax.naming Context lookup.

Prototype

public Object lookup(String name) throws NamingException;

Source Link

Document

Retrieves the named object.

Usage

From source file:com.fusesource.examples.activemq.VirtualConsumer.java

public static void main(String args[]) {
    Connection connection = null;

    try {/*  w  w  w . j  a va 2s.  c o  m*/
        // JNDI lookup of JMS Connection Factory and JMS Destination
        Context context = new InitialContext();
        ConnectionFactory factory = (ConnectionFactory) context.lookup(CONNECTION_FACTORY_NAME);

        connection = factory.createConnection();
        connection.setClientID(System.getProperty("clientID"));
        connection.start();

        Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        Queue queue = session.createQueue(System.getProperty("queue"));

        MessageConsumer consumer = session.createConsumer(queue);

        LOG.info("Start consuming messages from " + queue + " with " + MESSAGE_TIMEOUT_MILLISECONDS
                + "ms timeout");

        // Synchronous message consumer
        int i = 1;
        while (true) {
            Message message = consumer.receive(MESSAGE_TIMEOUT_MILLISECONDS);
            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    LOG.info("Got " + (i++) + ". message: " + text);
                }
            } else {
                break;
            }
        }

        consumer.close();
        session.close();
    } catch (Throwable t) {
        LOG.error(t);
    } finally {
        // Cleanup code
        // In general, you should always close producers, consumers,
        // sessions, and connections in reverse order of creation.
        // For this simple example, a JMS connection.close will
        // clean up all other resources.
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                LOG.error(e);
            }
        }
    }
}

From source file:com.fusesource.examples.activemq.SimpleSubscriber.java

public static void main(String args[]) {
    Connection connection = null;

    try {//w w  w .j  ava 2s. c  o  m
        // JNDI lookup of JMS Connection Factory and JMS Destination
        Context context = new InitialContext();
        ConnectionFactory factory = (ConnectionFactory) context.lookup(CONNECTION_FACTORY_NAME);
        connection = factory.createConnection();
        connection.setClientID("ApplicationA");

        connection.start();

        Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        String topicName = System.getProperty("topic");

        Topic topic = session.createTopic(topicName);
        MessageConsumer consumer = session.createConsumer(topic);

        LOG.info("Start consuming messages from " + topicName + " with " + MESSAGE_TIMEOUT_MILLISECONDS
                + "ms timeout");

        // Synchronous message consumer
        int i = 1;
        while (true) {
            Message message = consumer.receive(MESSAGE_TIMEOUT_MILLISECONDS);
            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    LOG.info("Got " + (i++) + ". message: " + text);
                }
            } else {
                break;
            }
        }

        consumer.close();
        session.close();
    } catch (Throwable t) {
        LOG.error(t);
    } finally {
        // Cleanup code
        // In general, you should always close producers, consumers,
        // sessions, and connections in reverse order of creation.
        // For this simple example, a JMS connection.close will
        // clean up all other resources.
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                LOG.error(e);
            }
        }
    }
}

From source file:Rename.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/ou=People,o=JNDITutorial");

    try {/*w w w  .  j a v  a2s  .  c  om*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Rename to Scott S
        ctx.rename("cn=Scott Seligman", "cn=Scott S");

        // Check that it is there using new name
        Object obj = ctx.lookup("cn=Scott S");
        System.out.println(obj);

        // Rename back to Scott Seligman
        ctx.rename("cn=Scott S", "cn=Scott Seligman");

        // Check that it is there with original name
        obj = ctx.lookup("cn=Scott Seligman");
        System.out.println(obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Rename failed: " + e);
    }
}

From source file:LookupLdapName.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/");

    try {//from  w w w. j a  va2  s  .  c  om
        // Create the initial context
        Context ctx = new InitialContext(env);

        // A string representation of an LDAP name
        LdapName dn = new LdapName("ou=People,o=JNDITutorial");

        // Perform the lookup using the dn
        Object obj = ctx.lookup(dn);

        System.out.println(obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Lookup failed: " + e);
    }
}

From source file:Unbind.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/*from  w  ww .jav  a2 s. c  om*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Remove the binding
        ctx.unbind("cn=Favorite Fruit");

        // Check that it is gone
        Object obj = null;
        try {
            obj = ctx.lookup("cn=Favorite Fruit");
        } catch (NameNotFoundException ne) {
            System.out.println("unbind successful");
            return;
        }

        System.out.println("unbind failed; object still there: " + obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Operation failed: " + e);
    }
}

From source file:SerObj.java

public static void main(String[] args) {

    // Set up environment for creating initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {//from   w w  w. j  a v  a  2s.co m
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Create object to be bound
        Button b = new Button("Push me");

        // Perform bind
        ctx.bind("cn=Button", b);

        // Check that it is bound
        Button b2 = (Button) ctx.lookup("cn=Button");
        System.out.println(b2);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Operation failed: " + e);
    }
}

From source file:Rebind.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/*from  www.j av a2 s .  c om*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Create the object to be bound
        Fruit fruit = new Fruit("lemon");

        // Perform the bind
        ctx.rebind("cn=Favorite Fruit", fruit);

        // Check that it is bound
        Object obj = ctx.lookup("cn=Favorite Fruit");
        System.out.println(obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Operation failed: " + e);
    }
}

From source file:Bind.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/*from  w ww  .  jav a  2s.  c  o m*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Create the object to be bound
        Fruit fruit = new Fruit("orange");

        // Perform the bind
        ctx.bind("cn=Favorite Fruit", fruit);

        // Check that it is bound
        Object obj = ctx.lookup("cn=Favorite Fruit");
        System.out.println(obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Operation failed: " + e);
    }
}

From source file:TestDSLookUp.java

public static void main(String[] args) throws SQLException, NamingException {

    Context ctx = null;
    try {/* ww w. j  a v  a  2 s  .  co  m*/
        Properties prop = new Properties();
        prop.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.fscontext.RefFSContextFactory");
        prop.setProperty(Context.PROVIDER_URL, "file:/JNDI/JDBC");
        ctx = new InitialContext(prop);
    } catch (NamingException ne) {
        System.err.println(ne.getMessage());
    }

    DataSource ds = (DataSource) ctx.lookup("joe");
    Connection conn = ds.getConnection();
    Statement stmt = conn.createStatement();
    ResultSet rset = stmt.executeQuery(
            "select 'Hello Thin driver data source tester '||" + "initcap(USER)||'!' result from dual");
    if (rset.next())
        System.out.println(rset.getString(1));
    rset.close();
    stmt.close();
    conn.close();
}

From source file:org.apache.activemq.demo.SimpleConsumer.java

/**
 * @param args the queue used by the example
 *//*w  w  w  .  ja  va2 s . c  om*/
public static void main(String[] args) {
    String destinationName = null;
    Context jndiContext = null;
    ConnectionFactory connectionFactory = null;
    Connection connection = null;
    Session session = null;
    Destination destination = null;
    MessageConsumer consumer = null;

    /*
     * Read destination name from command line and display it.
     */
    if (args.length != 1) {
        LOG.info("Usage: java SimpleConsumer <destination-name>");
        System.exit(1);
    }
    destinationName = args[0];
    LOG.info("Destination name is " + destinationName);

    /*
     * Create a JNDI API InitialContext object
     */
    try {
        jndiContext = new InitialContext();
    } catch (NamingException e) {
        LOG.info("Could not create JNDI API " + "context: " + e.toString());
        System.exit(1);
    }

    /*
     * Look up connection factory and destination.
     */
    try {
        connectionFactory = (ConnectionFactory) jndiContext.lookup("ConnectionFactory");
        destination = (Destination) jndiContext.lookup(destinationName);
    } catch (NamingException e) {
        LOG.info("JNDI API lookup failed: " + e.toString());
        System.exit(1);
    }

    /*
     * Create connection. Create session from connection; false means
     * session is not transacted. Create receiver, then start message
     * delivery. Receive all text messages from destination until a non-text
     * message is received indicating end of message stream. Close
     * connection.
     */
    try {
        connection = connectionFactory.createConnection();
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        consumer = session.createConsumer(destination);
        connection.start();
        while (true) {
            Message m = consumer.receive(1);
            if (m != null) {
                if (m instanceof TextMessage) {
                    TextMessage message = (TextMessage) m;
                    LOG.info("Reading message: " + message.getText());
                } else {
                    break;
                }
            }
        }
    } catch (JMSException e) {
        LOG.info("Exception occurred: " + e);
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
            }
        }
    }
}