Java Code Examples for javax.rmi.PortableRemoteObject#narrow()

private static CMXATest lookupCMXABean(InitialContext ictx, String jndiName) {
    try {
        Object home = ictx.lookup(jndiName);
        CMXATestHome rhome = (CMXATestHome) PortableRemoteObject.narrow(
                home, CMXATestHome.class);
        CMXATest bean = (CMXATest) PortableRemoteObject.narrow(
                rhome.create(), CMXATest.class);
        return bean;
    } catch (NamingException ne) {
        log("The client was unable to lookup the EJBHome.  Please make sure ");
        log("that you have deployed the ejb with the JNDI name " + jndiName
                + " on the WebLogic server at " + url);
    } catch (CreateException ce) {
        log("Creation failed: " + ce);
    } catch (RemoteException ex) {
        log("Creation failed: " + ex);
    }
    return null;
}
 

private static CMXATest lookupCMXABean(InitialContext ictx, String jndiName) {
    try {
        Object home = ictx.lookup(jndiName);
        CMXATestHome rhome = (CMXATestHome) PortableRemoteObject.narrow(
                home, CMXATestHome.class);
        CMXATest bean = (CMXATest) PortableRemoteObject.narrow(
                rhome.create(), CMXATest.class);
        return bean;
    } catch (NamingException ne) {
        log("The client was unable to lookup the EJBHome.  Please make sure ");
        log("that you have deployed the ejb with the JNDI name " + jndiName
                + " on the WebLogic server at " + url);
    } catch (CreateException ce) {
        log("Creation failed: " + ce);
    } catch (RemoteException ex) {
        log("Creation failed: " + ex);
    }
    return null;
}
 

/**
 * Read an abstract interface type from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readAbstractAndNarrow(
    org.omg.CORBA_2_3.portable.InputStream in, Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_abstract_interface();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * This overridden lookup implementation performs a narrow operation
 * after the JNDI lookup, provided that a home interface is specified.
 * @see #setHomeInterface
 * @see javax.rmi.PortableRemoteObject#narrow
 */
@Override
protected Object lookup() throws NamingException {
	Object homeObject = super.lookup();
	if (this.homeInterface != null) {
		try {
			homeObject = PortableRemoteObject.narrow(homeObject, this.homeInterface);
		}
		catch (ClassCastException ex) {
			throw new RemoteLookupFailureException(
					"Could not narrow EJB home stub to home interface [" + this.homeInterface.getName() + "]", ex);
		}
	}
	return homeObject;
}
 

/**
 * Read an object reference from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readObjectAndNarrow(InputStream in,
                                         Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_Object();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * Read an abstract interface type from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readAbstractAndNarrow(
    org.omg.CORBA_2_3.portable.InputStream in, Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_abstract_interface();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * This overridden lookup implementation performs a narrow operation
 * after the JNDI lookup, provided that a home interface is specified.
 * @see #setHomeInterface
 * @see javax.rmi.PortableRemoteObject#narrow
 */
@Override
protected Object lookup() throws NamingException {
	Object homeObject = super.lookup();
	if (this.homeInterface != null) {
		try {
			homeObject = PortableRemoteObject.narrow(homeObject, this.homeInterface);
		}
		catch (ClassCastException ex) {
			throw new RemoteLookupFailureException(
					"Could not narrow EJB home stub to home interface [" + this.homeInterface.getName() + "]", ex);
		}
	}
	return homeObject;
}
 

/**
 * Read an abstract interface type from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readAbstractAndNarrow(
    org.omg.CORBA_2_3.portable.InputStream in, Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_abstract_interface();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * Read an abstract interface type from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readAbstractAndNarrow(
    org.omg.CORBA_2_3.portable.InputStream in, Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_abstract_interface();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * Read an object reference from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readObjectAndNarrow(InputStream in,
                                         Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_Object();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * Read an object reference from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readObjectAndNarrow(InputStream in,
                                         Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_Object();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * Read an abstract interface type from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readAbstractAndNarrow(
    org.omg.CORBA_2_3.portable.InputStream in, Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_abstract_interface();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

/**
 * Read an object reference from the input stream and narrow
 * it to the desired type.
 * @param in the stream to read from.
 * @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
 */
public static Object readObjectAndNarrow(InputStream in,
                                         Class narrowTo)
    throws ClassCastException
{
    Object result = in.read_Object();
    if (result != null)
        return PortableRemoteObject.narrow(result, narrowTo);
    else
        return null;
}
 

@Override
@SuppressWarnings("unchecked")
public <T> T narrow(Object narrowFrom, Class<T> narrowTo) {
    return (T)PortableRemoteObject.narrow(narrowFrom, narrowTo);
}
 

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
    try {

        final PrintWriter pw = resp.getWriter();

        final Context initial = new InitialContext();

        final MoviesBusinessHome home = (MoviesBusinessHome)
                PortableRemoteObject.narrow(initial.lookup("java:comp/env/ejb/MoviesBusiness"), MoviesBusinessHome.class);

        final MoviesBusiness moviesBusiness = home.create();
        moviesBusiness.doLogic();

        final DataSource ds = (DataSource) initial.lookup("java:comp/env/db/DataSource");
        try (final Connection connection = ds.getConnection();
             final PreparedStatement ps = connection.prepareStatement(
                     "select TABLE_NAME, COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH " +
                             "from INFORMATION_SCHEMA.COLUMNS where TABLE_SCHEMA = 'PUBLIC' and TABLE_NAME in ('ACTOR', 'MOVIE', 'ACTOR_MOVIE')");

             final ResultSet rs = ps.executeQuery()) {

            final ResultSetMetaData metaData = rs.getMetaData();
            final int columnCount = metaData.getColumnCount();

            final String[] columnNames = new String[columnCount];

            for (int c = 0; c < columnCount; c++) {
                columnNames[c] = metaData.getColumnName(c + 1);
            }

            while (rs.next()) {
                final StringBuilder sb = new StringBuilder();

                for (int c = 0; c < columnCount; c++) {
                    if (c > 0) {
                        sb.append(", ");
                    }

                    sb.append(columnNames[c]).append(": ").append(rs.getString(c + 1));
                }

                pw.println(sb.toString());
            }
        }

        pw.flush();

    } catch (final Exception ex) {
        throw new ServletException(ex);
    }
}
 

@Override
@SuppressWarnings("unchecked")
public <T> T narrow(Object narrowFrom, Class<T> narrowTo) {
    return (T)PortableRemoteObject.narrow(narrowFrom, narrowTo);
}
 

@Override
@SuppressWarnings("unchecked")
public <T> T narrow(Object narrowFrom, Class<T> narrowTo) {
    return (T)PortableRemoteObject.narrow(narrowFrom, narrowTo);
}
 

public List<Book> listBooks() throws RemoteException, NamingException {
    Object obj = new InitialContext().lookup("java:comp/env/ejb/BookHomeRemote");
    BookHomeRemote home = (BookHomeRemote) PortableRemoteObject.narrow(obj, BookHomeRemote.class);
    return home.listBooks();
}
 

@Override
@SuppressWarnings("unchecked")
public <T> T narrow(Object narrowFrom, Class<T> narrowTo) {
    return (T)PortableRemoteObject.narrow(narrowFrom, narrowTo);
}
 

@Override
@SuppressWarnings("unchecked")
public <T> T narrow(Object narrowFrom, Class<T> narrowTo) {
    return (T)PortableRemoteObject.narrow(narrowFrom, narrowTo);
}